change play thread to static thread. use elm fatfs on radio project.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@329 bbd45198-f89e-11dd-88c7-29a3b14d5316
author: bernard.xiong <[email protected]> 2010-01-21 14:12:40 +0000
committer: bernard.xiong <[email protected]> 2010-01-21 14:12:40 +0000
commit: cefc4f7aa5f819f8f4f5aa9f356d33076f9b0af2 (patch)
tree: c718fc281333497b443bf9c2aba39dba9c2c1fbb /bsp
parent: c28ecae7edc0d9e066c99eb8ad040a73dba56525 (diff)
8 files changed, 3827 insertions, 3806 deletions
diff --git a/bsp/stm32_radio/mp3.c b/bsp/stm32_radio/mp3.c
index dc1035a822..e8ad535bd0 100644
--- a/bsp/stm32_radio/mp3.c
+++ b/bsp/stm32_radio/mp3.c
@@ -381,11 +381,11 @@ void mp3(char* filename)
 
 			current_offset = 0;
 			while (mp3_decoder_run(decoder) != -1);
-			close(fd);
 
 			/* delete decoder object */
 			mp3_decoder_delete(decoder);
 		}
+		close(fd);
 	}
 	is_playing = RT_FALSE;
 }
diff --git a/bsp/stm32_radio/player_bg.c b/bsp/stm32_radio/player_bg.c
index e2553c26e7..905fb15682 100644
--- a/bsp/stm32_radio/player_bg.c
+++ b/bsp/stm32_radio/player_bg.c
@@ -3,8 +3,10 @@
 
 #include <string.h>
 
-static rt_mq_t player_thread_mq;
 rt_bool_t is_playing = RT_FALSE;
+static rt_mq_t player_thread_mq;
+static struct rt_thread	player_thread_tid;
+static rt_uint8_t player_thread_stack[0x400];
 
 rt_bool_t player_is_playing()
 {
@@ -20,6 +22,15 @@ void player_play_file(const char* fn)
     /* send to message queue */
     rt_mq_send(player_thread_mq, (void*)&request, sizeof(struct player_request));
 }
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+static const char _fn[] = "/005.mp3";
+void play()
+{
+    player_play_file(_fn);
+}
+FINSH_FUNCTION_EXPORT(play, play mp3 file test);
+#endif
 
 void player_stop()
 {
@@ -49,7 +60,7 @@ void player_thread(void* parameter)
 
 				    /* get music tag information */
 					mp3(request.fn);
-					
+
 					player_notify_stop();
 					is_playing = RT_FALSE;
 				}
@@ -68,16 +79,21 @@ void player_thread(void* parameter)
 
 void player_init()
 {
-    rt_thread_t tid;
+    rt_err_t result;
 
 	/* create player thread */
 	player_thread_mq = rt_mq_create("player", sizeof(struct player_request),
 		8, RT_IPC_FLAG_FIFO);
 	RT_ASSERT(player_thread_mq != RT_NULL);
 
-	tid = rt_thread_create("ply_bg", player_thread, RT_NULL,
-		2048, 20, 5);
-	if (tid != RT_NULL) rt_thread_startup(tid);
-	
-	player_ui_init();
+	result = rt_thread_init(&player_thread_tid, "ply_bg", player_thread, RT_NULL,
+		player_thread_stack, sizeof(player_thread_stack), 
+		20, 5);
+
+	if (result != RT_EOK) rt_kprintf("player thread init failed\n");
+	else
+	{
+		rt_thread_startup(&player_thread_tid);
+		player_ui_init();
+	}
 }
diff --git a/bsp/stm32_radio/project.Opt b/bsp/stm32_radio/project.Opt
index 44d4a82cca..3619890222 100644
--- a/bsp/stm32_radio/project.Opt
+++ b/bsp/stm32_radio/project.Opt
@@ -11,14 +11,14 @@
  DaveTm { 0,0,0,0,0,0,0,0 }
 
 Target (RT-Thread STM32 Radio), 0x0004 // Tools: 'ARM-ADS'
-GRPOPT 1,(Startup),1,0,0
+GRPOPT 1,(Startup),0,0,0
 GRPOPT 2,(Kernel),0,0,0
 GRPOPT 3,(STM32),0,0,0
 GRPOPT 4,(StdPeriph_Driver),0,0,0
 GRPOPT 5,(USB-FS-Device_Driver),0,0,0
 GRPOPT 6,(CMSIS),0,0,0
 GRPOPT 7,(finsh),0,0,0
-GRPOPT 8,(Filesystem),0,0,0
+GRPOPT 8,(Filesystem),1,0,0
 GRPOPT 9,(LwIP),0,0,0
 GRPOPT 10,(mp3),0,0,0
 GRPOPT 11,(RTGUI),0,0,0
@@ -31,8 +31,8 @@ OPTFFF 1,4,1,0,0,0,0,0,<.\application.c><application.c>
 OPTFFF 1,5,1,0,0,0,0,0,<.\board.c><board.c> 
 OPTFFF 1,6,1,352321536,0,0,0,0,<.\startup.c><startup.c> 
 OPTFFF 1,7,1,0,0,0,0,0,<.\stm32f10x_it.c><stm32f10x_it.c> 
-OPTFFF 1,8,1,0,0,0,0,0,<.\usart.c><usart.c> 
-OPTFFF 1,9,1,402653184,0,0,0,0,<.\sdcard.c><sdcard.c> 
+OPTFFF 1,8,1,436207616,0,0,0,0,<.\usart.c><usart.c> 
+OPTFFF 1,9,1,301989888,0,0,0,0,<.\sdcard.c><sdcard.c> 
 OPTFFF 1,10,1,0,0,0,0,0,<.\rtc.c><rtc.c> 
 OPTFFF 1,11,1,0,0,0,0,0,<.\dm9000.c><dm9000.c> 
 OPTFFF 1,12,1,889192448,0,0,0,0,<.\fsmc_nand.c><fsmc_nand.c> 
@@ -40,7 +40,7 @@ OPTFFF 1,13,1,0,0,0,0,0,<.\fsmc_sram.c><fsmc_sram.c>
 OPTFFF 1,14,1,0,0,0,0,0,<.\fmt0371\fmt0371.c><fmt0371.c> 
 OPTFFF 1,15,1,0,0,0,0,0,<.\http.c><http.c> 
 OPTFFF 1,16,1,0,0,0,0,0,<.\lcd.c><lcd.c> 
-OPTFFF 1,17,1,16777216,0,0,0,0,<.\mp3.c><mp3.c> 
+OPTFFF 1,17,1,0,0,0,0,0,<.\mp3.c><mp3.c> 
 OPTFFF 1,18,1,369098752,0,0,0,0,<.\wav.c><wav.c> 
 OPTFFF 1,19,1,0,0,0,0,0,<.\netbuffer.c><netbuffer.c> 
 OPTFFF 1,20,1,0,0,0,0,0,<.\key.c><key.c> 
@@ -49,194 +49,185 @@ OPTFFF 1,22,1,0,0,0,0,0,<.\filelist.c><filelist.c>
 OPTFFF 1,23,1,0,0,0,0,0,<.\device_info.c><device_info.c> 
 OPTFFF 1,24,1,0,0,0,0,0,<.\listview.c><listview.c> 
 OPTFFF 1,25,1,0,0,0,0,0,<.\player_ui.c><player_ui.c> 
-OPTFFF 1,26,1,0,0,0,0,0,<.\player_bg.c><player_bg.c> 
+OPTFFF 1,26,1,520093696,0,0,0,0,<.\player_bg.c><player_bg.c> 
 OPTFFF 1,27,1,469762048,0,0,0,0,<.\play_list.c><play_list.c> 
 OPTFFF 1,28,1,0,0,0,0,0,<.\ili9325\ili9320.c><ili9320.c> 
 OPTFFF 1,29,1,0,0,0,0,0,<.\codec.c><codec.c> 
-OPTFFF 2,30,1,0,0,0,0,0,<..\..\src\clock.c><clock.c> 
-OPTFFF 2,31,1,0,0,0,0,0,<..\..\src\idle.c><idle.c> 
-OPTFFF 2,32,1,0,0,0,0,0,<..\..\src\ipc.c><ipc.c> 
-OPTFFF 2,33,1,0,0,0,0,0,<..\..\src\mempool.c><mempool.c> 
-OPTFFF 2,34,1,0,0,0,0,0,<..\..\src\mem.c><mem.c> 
-OPTFFF 2,35,1,0,0,0,0,0,<..\..\src\object.c><object.c> 
-OPTFFF 2,36,1,0,0,0,0,0,<..\..\src\scheduler.c><scheduler.c> 
-OPTFFF 2,37,1,0,0,0,0,0,<..\..\src\thread.c><thread.c> 
-OPTFFF 2,38,1,0,0,0,0,0,<..\..\src\timer.c><timer.c> 
-OPTFFF 2,39,1,0,0,0,0,0,<..\..\src\irq.c><irq.c> 
-OPTFFF 2,40,1,0,0,0,0,0,<..\..\src\kservice.c><kservice.c> 
-OPTFFF 2,41,1,0,0,0,0,0,<..\..\src\device.c><device.c> 
-OPTFFF 2,42,1,0,0,0,0,0,<..\..\src\slab.c><slab.c> 
-OPTFFF 3,43,1,0,0,0,0,0,<..\..\libcpu\arm\stm32\stack.c><stack.c> 
-OPTFFF 3,44,1,0,0,0,0,0,<..\..\libcpu\arm\stm32\interrupt.c><interrupt.c> 
-OPTFFF 3,45,1,0,0,0,0,0,<..\..\libcpu\arm\stm32\cpu.c><cpu.c> 
-OPTFFF 3,46,1,0,0,0,0,0,<..\..\libcpu\arm\stm32\serial.c><serial.c> 
-OPTFFF 3,47,2,0,0,0,0,0,<..\..\libcpu\arm\stm32\context_rvds.S><context_rvds.S> 
-OPTFFF 3,48,2,0,0,0,0,0,<..\..\libcpu\arm\stm32\start_rvds.s><start_rvds.s> 
-OPTFFF 3,49,1,0,0,0,0,0,<..\..\libcpu\arm\stm32\fault.c><fault.c> 
-OPTFFF 3,50,2,0,0,0,0,0,<..\..\libcpu\arm\stm32\fault_rvds.S><fault_rvds.S> 
-OPTFFF 4,51,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\misc.c><misc.c> 
-OPTFFF 4,52,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_adc.c><stm32f10x_adc.c> 
-OPTFFF 4,53,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_bkp.c><stm32f10x_bkp.c> 
-OPTFFF 4,54,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_can.c><stm32f10x_can.c> 
-OPTFFF 4,55,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_crc.c><stm32f10x_crc.c> 
-OPTFFF 4,56,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_dac.c><stm32f10x_dac.c> 
-OPTFFF 4,57,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_dbgmcu.c><stm32f10x_dbgmcu.c> 
-OPTFFF 4,58,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_dma.c><stm32f10x_dma.c> 
-OPTFFF 4,59,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_exti.c><stm32f10x_exti.c> 
-OPTFFF 4,60,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_flash.c><stm32f10x_flash.c> 
-OPTFFF 4,61,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_fsmc.c><stm32f10x_fsmc.c> 
-OPTFFF 4,62,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_gpio.c><stm32f10x_gpio.c> 
-OPTFFF 4,63,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_i2c.c><stm32f10x_i2c.c> 
-OPTFFF 4,64,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_iwdg.c><stm32f10x_iwdg.c> 
-OPTFFF 4,65,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_pwr.c><stm32f10x_pwr.c> 
-OPTFFF 4,66,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_rcc.c><stm32f10x_rcc.c> 
-OPTFFF 4,67,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_rtc.c><stm32f10x_rtc.c> 
-OPTFFF 4,68,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_sdio.c><stm32f10x_sdio.c> 
-OPTFFF 4,69,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_spi.c><stm32f10x_spi.c> 
-OPTFFF 4,70,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_tim.c><stm32f10x_tim.c> 
-OPTFFF 4,71,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_usart.c><stm32f10x_usart.c> 
-OPTFFF 4,72,1,0,0,0,0,0,<.\Libraries\STM32F10x_StdPeriph_Driver\src\stm32f10x_wwdg.c><stm32f10x_wwdg.c> 
-OPTFFF 5,73,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\otgd_fs_cal.c><otgd_fs_cal.c> 
-OPTFFF 5,74,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\otgd_fs_dev.c><otgd_fs_dev.c> 
-OPTFFF 5,75,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\otgd_fs_int.c><otgd_fs_int.c> 
-OPTFFF 5,76,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\otgd_fs_pcd.c><otgd_fs_pcd.c> 
-OPTFFF 5,77,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\usb_core.c><usb_core.c> 
-OPTFFF 5,78,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\usb_init.c><usb_init.c> 
-OPTFFF 5,79,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\usb_int.c><usb_int.c> 
-OPTFFF 5,80,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\usb_mem.c><usb_mem.c> 
-OPTFFF 5,81,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\usb_regs.c><usb_regs.c> 
-OPTFFF 5,82,1,0,0,0,0,0,<.\Libraries\STM32_USB-FS-Device_Driver\src\usb_sil.c><usb_sil.c> 
-OPTFFF 6,83,1,0,0,0,0,0,<.\Libraries\CMSIS\Core\CM3\core_cm3.c><core_cm3.c> 
-OPTFFF 6,84,1,0,0,0,0,0,<.\Libraries\CMSIS\Core\CM3\system_stm32f10x.c><system_stm32f10x.c> 
-OPTFFF 7,85,1,0,0,0,0,0,<..\..\finsh\finsh_compiler.c><finsh_compiler.c> 
-OPTFFF 7,86,1,0,0,0,0,0,<..\..\finsh\finsh_error.c><finsh_error.c> 
-OPTFFF 7,87,1,0,0,0,0,0,<..\..\finsh\finsh_heap.c><finsh_heap.c> 
-OPTFFF 7,88,1,0,0,0,0,0,<..\..\finsh\finsh_init.c><finsh_init.c> 
-OPTFFF 7,89,1,0,0,0,0,0,<..\..\finsh\finsh_node.c><finsh_node.c> 
-OPTFFF 7,90,1,0,0,0,0,0,<..\..\finsh\finsh_ops.c><finsh_ops.c> 
-OPTFFF 7,91,1,0,0,0,0,0,<..\..\finsh\finsh_parser.c><finsh_parser.c> 
-OPTFFF 7,92,1,0,0,0,0,0,<..\..\finsh\finsh_token.c><finsh_token.c> 
-OPTFFF 7,93,1,0,0,0,0,0,<..\..\finsh\finsh_var.c><finsh_var.c> 
-OPTFFF 7,94,1,0,0,0,0,0,<..\..\finsh\finsh_vm.c><finsh_vm.c> 
-OPTFFF 7,95,1,0,0,0,0,0,<..\..\finsh\shell.c><shell.c> 
-OPTFFF 7,96,1,0,0,0,0,0,<..\..\finsh\symbol.c><symbol.c> 
-OPTFFF 7,97,1,0,0,0,0,0,<..\..\finsh\cmd.c><cmd.c> 
-OPTFFF 8,98,1,0,0,0,0,0,<..\..\filesystem\dfs\src\dfs_init.c><dfs_init.c> 
-OPTFFF 8,99,1,0,0,0,0,0,<..\..\filesystem\dfs\src\dfs_fs.c><dfs_fs.c> 
-OPTFFF 8,100,1,0,0,0,0,0,<..\..\filesystem\dfs\src\dfs_raw.c><dfs_raw.c> 
-OPTFFF 8,101,1,0,0,0,0,0,<..\..\filesystem\dfs\src\dfs_util.c><dfs_util.c> 
-OPTFFF 8,102,1,0,0,0,0,0,<..\..\filesystem\dfs\src\dfs_posix.c><dfs_posix.c> 
-OPTFFF 8,103,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\dir.c><dir.c> 
-OPTFFF 8,104,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\fat.c><fat.c> 
-OPTFFF 8,105,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\file.c><file.c> 
-OPTFFF 8,106,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\fs.c><fs.c> 
-OPTFFF 8,107,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\ls.c><ls.c> 
-OPTFFF 8,108,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\time.c><time.c> 
-OPTFFF 8,109,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\ui.c><ui.c> 
-OPTFFF 8,110,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\base\plibc.c><plibc.c> 
-OPTFFF 8,111,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\base\efs.c><efs.c> 
-OPTFFF 8,112,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\base\extract.c><extract.c> 
-OPTFFF 8,113,1,0,0,0,0,0,<..\..\filesystem\dfs\filesystems\efsl\src\base\partition.c><partition.c> 
-OPTFFF 8,114,1,0,0,0,0,0,<..\..\filesystem\dfs\src\dfs_cache.c><dfs_cache.c> 
-OPTFFF 9,115,1,0,0,0,0,0,<..\..\net\lwip\src\core\dhcp.c><dhcp.c> 
-OPTFFF 9,116,1,0,0,0,0,0,<..\..\net\lwip\src\core\dns.c><dns.c> 
-OPTFFF 9,117,1,0,0,0,0,0,<..\..\net\lwip\src\core\init.c><init.c> 
-OPTFFF 9,118,1,0,0,0,0,0,<..\..\net\lwip\src\core\memp.c><memp.c> 
-OPTFFF 9,119,1,0,0,0,0,0,<..\..\net\lwip\src\core\netif.c><netif.c> 
-OPTFFF 9,120,1,0,0,0,0,0,<..\..\net\lwip\src\core\pbuf.c><pbuf.c> 
-OPTFFF 9,121,1,0,0,0,0,0,<..\..\net\lwip\src\core\raw.c><raw.c> 
-OPTFFF 9,122,1,0,0,0,0,0,<..\..\net\lwip\src\core\stats.c><stats.c> 
-OPTFFF 9,123,1,0,0,0,0,0,<..\..\net\lwip\src\core\sys.c><sys.c> 
-OPTFFF 9,124,1,0,0,0,0,0,<..\..\net\lwip\src\core\tcp.c><tcp.c> 
-OPTFFF 9,125,1,0,0,0,0,0,<..\..\net\lwip\src\core\tcp_in.c><tcp_in.c> 
-OPTFFF 9,126,1,0,0,0,0,0,<..\..\net\lwip\src\core\tcp_out.c><tcp_out.c> 
-OPTFFF 9,127,1,0,0,0,0,0,<..\..\net\lwip\src\core\udp.c><udp.c> 
-OPTFFF 9,128,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\autoip.c><autoip.c> 
-OPTFFF 9,129,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\icmp.c><icmp.c> 
-OPTFFF 9,130,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\igmp.c><igmp.c> 
-OPTFFF 9,131,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\inet.c><inet.c> 
-OPTFFF 9,132,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\inet_chksum.c><inet_chksum.c> 
-OPTFFF 9,133,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\ip.c><ip.c> 
-OPTFFF 9,134,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\ip_addr.c><ip_addr.c> 
-OPTFFF 9,135,1,0,0,0,0,0,<..\..\net\lwip\src\core\ipv4\ip_frag.c><ip_frag.c> 
-OPTFFF 9,136,1,0,0,0,0,0,<..\..\net\lwip\src\core\snmp\msg_in.c><msg_in.c> 
-OPTFFF 9,137,1,0,0,0,0,0,<..\..\net\lwip\src\core\snmp\msg_out.c><msg_out.c> 
-OPTFFF 9,138,1,0,0,0,0,0,<..\..\net\lwip\src\api\api_lib.c><api_lib.c> 
-OPTFFF 9,139,1,0,0,0,0,0,<..\..\net\lwip\src\api\api_msg.c><api_msg.c> 
-OPTFFF 9,140,1,0,0,0,0,0,<..\..\net\lwip\src\api\err.c><err.c> 
-OPTFFF 9,141,1,0,0,0,0,0,<..\..\net\lwip\src\api\netbuf.c><netbuf.c> 
-OPTFFF 9,142,1,0,0,0,0,0,<..\..\net\lwip\src\api\netdb.c><netdb.c> 
-OPTFFF 9,143,1,0,0,0,0,0,<..\..\net\lwip\src\api\netifapi.c><netifapi.c> 
-OPTFFF 9,144,1,0,0,0,0,0,<..\..\net\lwip\src\api\tcpip.c><tcpip.c> 
-OPTFFF 9,145,1,0,0,0,0,0,<..\..\net\lwip\src\netif\etharp.c><etharp.c> 
-OPTFFF 9,146,1,0,0,0,0,0,<..\..\net\lwip\src\netif\ethernetif.c><ethernetif.c> 
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+OPTFFF 10,142,1,0,0,0,0,0,<.\mp3\mp3dec.c><mp3dec.c> 
+OPTFFF 10,143,1,0,0,0,0,0,<.\mp3\mp3tabs.c><mp3tabs.c> 
+OPTFFF 10,144,1,0,0,0,0,0,<.\mp3\real\bitstream.c><bitstream.c> 
+OPTFFF 10,145,1,0,0,0,0,0,<.\mp3\real\buffers.c><buffers.c> 
+OPTFFF 10,146,1,0,0,0,0,0,<.\mp3\real\dct32.c><dct32.c> 
+OPTFFF 10,147,1,0,0,0,0,0,<.\mp3\real\dequant.c><dequant.c> 
+OPTFFF 10,148,1,0,0,0,0,0,<.\mp3\real\dqchan.c><dqchan.c> 
+OPTFFF 10,149,1,0,0,0,0,0,<.\mp3\real\huffman.c><huffman.c> 
+OPTFFF 10,150,1,0,0,0,0,0,<.\mp3\real\hufftabs.c><hufftabs.c> 
+OPTFFF 10,151,1,0,0,0,0,0,<.\mp3\real\imdct.c><imdct.c> 
+OPTFFF 10,152,1,0,0,0,0,0,<.\mp3\real\scalfact.c><scalfact.c> 
+OPTFFF 10,153,1,0,0,0,0,0,<.\mp3\real\stproc.c><stproc.c> 
+OPTFFF 10,154,1,0,0,0,0,0,<.\mp3\real\subband.c><subband.c> 
+OPTFFF 10,155,1,0,0,0,0,0,<.\mp3\real\trigtabs.c><trigtabs.c> 
+OPTFFF 10,156,2,0,0,0,0,0,<.\mp3\real\arm\asmpoly_thumb2.s><asmpoly_thumb2.s> 
+OPTFFF 10,157,2,0,0,0,0,0,<.\mp3\real\arm\asmmisc.s><asmmisc.s> 
+OPTFFF 11,158,1,0,0,0,0,0,<..\..\rtgui\common\rtgui_object.c><rtgui_object.c> 
+OPTFFF 11,159,1,0,0,0,0,0,<..\..\rtgui\common\rtgui_system.c><rtgui_system.c> 
+OPTFFF 11,160,1,0,0,0,0,0,<..\..\rtgui\common\rtgui_theme.c><rtgui_theme.c> 
+OPTFFF 11,161,1,0,0,0,0,0,<..\..\rtgui\common\asc12font.c><asc12font.c> 
+OPTFFF 11,162,1,0,0,0,0,0,<..\..\rtgui\common\asc16font.c><asc16font.c> 
+OPTFFF 11,163,1,0,0,0,0,0,<..\..\rtgui\common\color.c><color.c> 
+OPTFFF 11,164,1,0,0,0,0,0,<..\..\rtgui\common\dc.c><dc.c> 
+OPTFFF 11,165,1,0,0,0,0,0,<..\..\rtgui\common\dc_buffer.c><dc_buffer.c> 
+OPTFFF 11,166,1,0,0,0,0,0,<..\..\rtgui\common\dc_hw.c><dc_hw.c> 
+OPTFFF 11,167,1,0,0,0,0,0,<..\..\rtgui\common\filerw.c><filerw.c> 
+OPTFFF 11,168,1,0,0,0,0,0,<..\..\rtgui\common\font.c><font.c> 
+OPTFFF 11,169,1,0,0,0,0,0,<..\..\rtgui\common\image.c><image.c> 
+OPTFFF 11,170,1,0,0,0,0,0,<..\..\rtgui\common\image_xpm.c><image_xpm.c> 
+OPTFFF 11,171,1,0,0,0,0,0,<..\..\rtgui\common\image_hdc.c><image_hdc.c> 
+OPTFFF 11,172,1,0,0,0,0,0,<..\..\rtgui\common\region.c><region.c> 
+OPTFFF 11,173,1,0,0,0,0,0,<..\..\rtgui\server\server.c><server.c> 
+OPTFFF 11,174,1,0,0,0,0,0,<..\..\rtgui\server\driver.c><driver.c> 
+OPTFFF 11,175,1,0,0,0,0,0,<..\..\rtgui\server\panel.c><panel.c> 
+OPTFFF 11,176,1,0,0,0,0,0,<..\..\rtgui\widgets\widget.c><widget.c> 
+OPTFFF 11,177,1,0,0,0,0,0,<..\..\rtgui\widgets\window.c><window.c> 
+OPTFFF 11,178,1,0,0,0,0,0,<..\..\rtgui\widgets\workbench.c><workbench.c> 
+OPTFFF 11,179,1,0,0,0,0,0,<..\..\rtgui\widgets\view.c><view.c> 
+OPTFFF 11,180,1,0,0,0,0,0,<..\..\rtgui\widgets\box.c><box.c> 
+OPTFFF 11,181,1,0,0,0,0,0,<..\..\rtgui\widgets\button.c><button.c> 
+OPTFFF 11,182,1,0,0,0,0,0,<..\..\rtgui\widgets\container.c><container.c> 
+OPTFFF 11,183,1,0,0,0,0,0,<..\..\rtgui\widgets\iconbox.c><iconbox.c> 
+OPTFFF 11,184,1,0,0,0,0,0,<..\..\rtgui\widgets\label.c><label.c> 
+OPTFFF 11,185,1,0,0,0,0,0,<..\..\rtgui\widgets\textbox.c><textbox.c> 
+OPTFFF 11,186,1,0,0,0,0,0,<..\..\rtgui\widgets\title.c><title.c> 
+OPTFFF 11,187,1,0,0,0,0,0,<..\..\rtgui\widgets\toplevel.c><toplevel.c> 
+OPTFFF 11,188,1,0,0,0,0,0,<..\..\rtgui\server\mouse.c><mouse.c> 
+OPTFFF 11,189,1,0,0,0,0,0,<..\..\rtgui\server\topwin.c><topwin.c> 
+OPTFFF 11,190,1,0,0,0,0,0,<..\..\rtgui\common\font_hz_file.c><font_hz_file.c> 
+OPTFFF 11,191,1,0,0,0,0,0,<..\..\rtgui\common\hz16font.c><hz16font.c> 
+OPTFFF 11,192,1,0,0,0,0,0,<..\..\rtgui\common\hz12font.c><hz12font.c> 
+OPTFFF 12,193,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\hw_config.c><hw_config.c> 
+OPTFFF 12,194,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\mass_mal.c><mass_mal.c> 
+OPTFFF 12,195,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\memory.c><memory.c> 
+OPTFFF 12,196,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_bot.c><usb_bot.c> 
+OPTFFF 12,197,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\scsi_data.c><scsi_data.c> 
+OPTFFF 12,198,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_desc.c><usb_desc.c> 
+OPTFFF 12,199,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_endp.c><usb_endp.c> 
+OPTFFF 12,200,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_istr.c><usb_istr.c> 
+OPTFFF 12,201,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_prop.c><usb_prop.c> 
+OPTFFF 12,202,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_pwr.c><usb_pwr.c> 
+OPTFFF 12,203,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_scsi.c><usb_scsi.c> 
+OPTFFF 12,204,1,0,0,0,0,0,<.\Libraries\Mass_Storage\src\usb_main.c><usb_main.c> 
 
 
 TARGOPT 1, (RT-Thread STM32 Radio)
@@ -256,13 +247,11 @@ TARGOPT 1, (RT-Thread STM32 Radio)
   OPTKEY 0,(ARMDBGFLAGS)(-T0)
   OPTKEY 0,(DLGUARM)((105=150,189,819,540,0)(106=-1,-1,-1,-1,0)(107=-1,-1,-1,-1,0))
   OPTKEY 0,(JL2CM3)(-U20090110 -O718 -S10 -C0 -JU1 -JI127.0.0.1 -JP0 -N00("ARM CoreSight SW-DP") -D00(1BA01477) -L00(0) -TO18 -TC10000000 -TP21 -TDS8004 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO27 -FD20000000 -FC800 -FN1 -FF0STM32F10x_512 -FS08000000 -FL080000)
-  OPTBB 0,0,41,1,134368182,0,0,0,0,1,<rtgui_system.c>()()
-  OPTBB 1,0,44,1,134356542,0,0,0,0,1,<font.c>()()
   OPTWA 0,1,(_mp)
   OPTWA 1,1,(tinfo,0x0A)
   OPTMM 1,8,(text)
   OPTMM 2,8,(mimeBuffer)
-  OPTDF 0x86
+  OPTDF 0x82
   OPTLE <>
   OPTLC <>
 EndOpt
diff --git a/bsp/stm32_radio/project.Uv2 b/bsp/stm32_radio/project.Uv2
index 4ba21aae57..cdf0408321 100644
--- a/bsp/stm32_radio/project.Uv2
+++ b/bsp/stm32_radio/project.Uv2
@@ -119,18 +119,8 @@ File 8,1,<..\..\filesystem\dfs\src\dfs_fs.c><dfs_fs.c>
 File 8,1,<..\..\filesystem\dfs\src\dfs_raw.c><dfs_raw.c>
 File 8,1,<..\..\filesystem\dfs\src\dfs_util.c><dfs_util.c>
 File 8,1,<..\..\filesystem\dfs\src\dfs_posix.c><dfs_posix.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\dir.c><dir.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\fat.c><fat.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\file.c><file.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\fs.c><fs.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\ls.c><ls.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\time.c><time.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\ui.c><ui.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\plibc.c><plibc.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\efs.c><efs.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\extract.c><extract.c>
-File 8,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\partition.c><partition.c>
-File 8,1,<..\..\filesystem\dfs\src\dfs_cache.c><dfs_cache.c>
+File 8,1,<..\..\filesystem\dfs\filesystems\elmfat\dfs_elm.c><dfs_elm.c>
+File 8,1,<..\..\filesystem\dfs\filesystems\elmfat\ff.c><ff.c>
 File 9,1,<..\..\net\lwip\src\core\dhcp.c><dhcp.c>
 File 9,1,<..\..\net\lwip\src\core\dns.c><dns.c>
 File 9,1,<..\..\net\lwip\src\core\init.c><init.c>
diff --git a/bsp/stm32_radio/rtconfig.h b/bsp/stm32_radio/rtconfig.h
index c5536544b0..3830c790ef 100644
--- a/bsp/stm32_radio/rtconfig.h
+++ b/bsp/stm32_radio/rtconfig.h
@@ -1,161 +1,163 @@
-/* RT-Thread config file */
-#ifndef __RTTHREAD_CFG_H__
-#define __RTTHREAD_CFG_H__
-
-/* RT_NAME_MAX*/
-#define RT_NAME_MAX	8
-
-/* RT_ALIGN_SIZE*/
-#define RT_ALIGN_SIZE	4
-
-/* PRIORITY_MAX*/
-#define RT_THREAD_PRIORITY_MAX	32
-
-/* Tick per Second*/
-#define RT_TICK_PER_SECOND	100
-
-/* SECTION: RT_DEBUG */
-/* Thread Debug*/
-#define RT_DEBUG
-/* #define RT_THREAD_DEBUG */
-
-#define RT_USING_OVERFLOW_CHECK
-
-/* Using Hook*/
-#define RT_USING_HOOK
-
-/* SECTION: IPC */
-/* Using Semaphore*/
-#define RT_USING_SEMAPHORE
-
-/* Using Mutex*/
-#define RT_USING_MUTEX
-
-/* Using Event*/
-#define RT_USING_EVENT
-
-/* Using MailBox*/
-#define RT_USING_MAILBOX
-
-/* Using Message Queue*/
-#define RT_USING_MESSAGEQUEUE
-
-/* SECTION: Memory Management */
-/* Using Memory Pool Management*/
-#define RT_USING_MEMPOOL
-
-/* Using Dynamic Heap Management*/
-#define RT_USING_HEAP
-
-/* Using Small MM*/
-#define RT_USING_SMALL_MEM
-
-/* Using SLAB Allocator*/
-/* #define RT_USING_SLAB */
-
-/* SECTION: Device System */
-/* Using Device System*/
-#define RT_USING_DEVICE
-#define RT_USING_UART1
-// #define RT_USING_UART2
-// #define RT_USING_UART3
-
-/* SECTION: Console options */
-/* the buffer size of console*/
-#define RT_CONSOLEBUF_SIZE	128
-
-/* SECTION: FinSH shell options */
-/* Using FinSH as Shell*/
-#define RT_USING_FINSH
-/* Using symbol table */
-#define FINSH_USING_SYMTAB
-#define FINSH_USING_DESCRIPTION
-#define FINSH_DEVICE_NAME   "uart1"
-
-/* SECTION: C++ support */
-/* Using C++ support*/
-/* #define RT_USING_CPLUSPLUS */
-
-#define RT_USING_DFS
-#define RT_USING_DFS_EFSL
-/* byte alignment for EFSL */
-#define BYTE_ALIGNMENT
-// #define RT_USING_DFS_ELMFAT
-#define DFS_EFLS_USING_STATIC_CACHE
-/* SECTION: DFS options */
-/* the max number of mounted filesystem */
-#define DFS_FILESYSTEMS_MAX			1
-/* the max number of opened files 		*/
-#define DFS_FD_MAX					8
-/* the max number of cached sector 		*/
-#define DFS_CACHE_MAX_NUM   		4
-
-/* SECTION: lwip, a lighwight TCP/IP protocol stack */
-/* Using lighweight TCP/IP protocol stack */
-#define RT_USING_LWIP
-
-/* Trace LwIP protocol */
-/* #define RT_LWIP_DEBUG */
-
-/* LwIP uses RT-Thread Memory Management */
-#define RT_LWIP_USING_RT_MEM
-
-/* Enable ICMP protocol */
-#define RT_LWIP_ICMP
-
-/* Enable IGMP protocol */
-/* #define RT_LWIP_IGMP */
-
-/* Enable UDP protocol */
-#define RT_LWIP_UDP
-
-/* Enable TCP protocol */
-#define RT_LWIP_TCP
-
-/* the number of simulatenously active TCP connections */
-#define RT_LWIP_TCP_PCB_NUM	3
-
-/* TCP sender buffer space */
-#define RT_LWIP_TCP_SND_BUF	2048
-
-/* Enable SNMP protocol */
-/* #define RT_LWIP_SNMP */
-
-/* Using DHCP */
-#define RT_LWIP_DHCP
-
-/* Using DNS */
-#define RT_LWIP_DNS
-
-/* ip address of target */
-#define RT_LWIP_IPADDR0	192
-#define RT_LWIP_IPADDR1	168
-#define RT_LWIP_IPADDR2	1
-#define RT_LWIP_IPADDR3	30
-
-/* gateway address of target */
-#define RT_LWIP_GWADDR0	192
-#define RT_LWIP_GWADDR1	168
-#define RT_LWIP_GWADDR2	1
-#define RT_LWIP_GWADDR3	1
-
-/* mask address of target */
-#define RT_LWIP_MSKADDR0	255
-#define RT_LWIP_MSKADDR1	255
-#define RT_LWIP_MSKADDR2	255
-#define RT_LWIP_MSKADDR3	0
-
-/* tcp thread options */
-#define RT_LWIP_TCPTHREAD_PRIORITY		10
-#define RT_LWIP_TCPTHREAD_MBOX_SIZE		4
-#define RT_LWIP_TCPTHREAD_STACKSIZE		1024
-
-/* ethernet if thread options */
-#define RT_LWIP_ETHTHREAD_PRIORITY		12
-#define RT_LWIP_ETHTHREAD_MBOX_SIZE		4
-#define RT_LWIP_ETHTHREAD_STACKSIZE		512
-
-/* SECTION: RT-Thread/GUI */
-#define RT_USING_RTGUI
-
-#endif
+/* RT-Thread config file */
+#ifndef __RTTHREAD_CFG_H__
+#define __RTTHREAD_CFG_H__
+
+/* RT_NAME_MAX*/
+#define RT_NAME_MAX	8
+
+/* RT_ALIGN_SIZE*/
+#define RT_ALIGN_SIZE	4
+
+/* PRIORITY_MAX*/
+#define RT_THREAD_PRIORITY_MAX	32
+
+/* Tick per Second*/
+#define RT_TICK_PER_SECOND	100
+
+/* SECTION: RT_DEBUG */
+/* Thread Debug*/
+#define RT_DEBUG
+/* #define RT_THREAD_DEBUG */
+
+#define RT_USING_OVERFLOW_CHECK
+
+/* Using Hook*/
+#define RT_USING_HOOK
+
+/* SECTION: IPC */
+/* Using Semaphore*/
+#define RT_USING_SEMAPHORE
+
+/* Using Mutex*/
+#define RT_USING_MUTEX
+
+/* Using Event*/
+#define RT_USING_EVENT
+
+/* Using MailBox*/
+#define RT_USING_MAILBOX
+
+/* Using Message Queue*/
+#define RT_USING_MESSAGEQUEUE
+
+/* SECTION: Memory Management */
+/* Using Memory Pool Management*/
+#define RT_USING_MEMPOOL
+
+/* Using Dynamic Heap Management*/
+#define RT_USING_HEAP
+
+/* Using Small MM*/
+#define RT_USING_SMALL_MEM
+
+/* Using SLAB Allocator*/
+/* #define RT_USING_SLAB */
+
+/* SECTION: Device System */
+/* Using Device System*/
+#define RT_USING_DEVICE
+#define RT_USING_UART1
+// #define RT_USING_UART2
+// #define RT_USING_UART3
+
+/* SECTION: Console options */
+/* the buffer size of console*/
+#define RT_CONSOLEBUF_SIZE	128
+
+/* SECTION: FinSH shell options */
+/* Using FinSH as Shell*/
+#define RT_USING_FINSH
+/* Using symbol table */
+#define FINSH_USING_SYMTAB
+#define FINSH_USING_DESCRIPTION
+#define FINSH_DEVICE_NAME   "uart1"
+
+/* SECTION: C++ support */
+/* Using C++ support*/
+/* #define RT_USING_CPLUSPLUS */
+
+#define RT_USING_DFS
+/* #define RT_USING_DFS_EFSL */
+/* byte alignment for EFSL */
+#define BYTE_ALIGNMENT
+
+#define RT_USING_DFS_ELMFAT
+#define RT_DFS_ELM_WORD_ACCESS
+
+/* SECTION: DFS options */
+/* the max number of mounted filesystem */
+#define DFS_FILESYSTEMS_MAX			2
+/* the max number of opened files 		*/
+#define DFS_FD_MAX					8
+/* the max number of cached sector 		*/
+#define DFS_CACHE_MAX_NUM   		4
+
+/* SECTION: lwip, a lighwight TCP/IP protocol stack */
+/* Using lighweight TCP/IP protocol stack */
+#define RT_USING_LWIP
+
+/* Trace LwIP protocol */
+/* #define RT_LWIP_DEBUG */
+
+/* LwIP uses RT-Thread Memory Management */
+#define RT_LWIP_USING_RT_MEM
+
+/* Enable ICMP protocol */
+#define RT_LWIP_ICMP
+
+/* Enable IGMP protocol */
+/* #define RT_LWIP_IGMP */
+
+/* Enable UDP protocol */
+#define RT_LWIP_UDP
+
+/* Enable TCP protocol */
+#define RT_LWIP_TCP
+
+/* the number of simulatenously active TCP connections */
+#define RT_LWIP_TCP_PCB_NUM	3
+
+/* TCP sender buffer space */
+#define RT_LWIP_TCP_SND_BUF	2048
+
+/* Enable SNMP protocol */
+/* #define RT_LWIP_SNMP */
+
+/* Using DHCP */
+#define RT_LWIP_DHCP
+
+/* Using DNS */
+#define RT_LWIP_DNS
+
+/* ip address of target */
+#define RT_LWIP_IPADDR0	192
+#define RT_LWIP_IPADDR1	168
+#define RT_LWIP_IPADDR2	1
+#define RT_LWIP_IPADDR3	30
+
+/* gateway address of target */
+#define RT_LWIP_GWADDR0	192
+#define RT_LWIP_GWADDR1	168
+#define RT_LWIP_GWADDR2	1
+#define RT_LWIP_GWADDR3	1
+
+/* mask address of target */
+#define RT_LWIP_MSKADDR0	255
+#define RT_LWIP_MSKADDR1	255
+#define RT_LWIP_MSKADDR2	255
+#define RT_LWIP_MSKADDR3	0
+
+/* tcp thread options */
+#define RT_LWIP_TCPTHREAD_PRIORITY		10
+#define RT_LWIP_TCPTHREAD_MBOX_SIZE		4
+#define RT_LWIP_TCPTHREAD_STACKSIZE		1024
+
+/* ethernet if thread options */
+#define RT_LWIP_ETHTHREAD_PRIORITY		12
+#define RT_LWIP_ETHTHREAD_MBOX_SIZE		4
+#define RT_LWIP_ETHTHREAD_STACKSIZE		512
+
+/* SECTION: RT-Thread/GUI */
+#define RT_USING_RTGUI
+
+#endif
diff --git a/bsp/stm32_radio/sdcard.c b/bsp/stm32_radio/sdcard.c
index 71592f2740..84f788312b 100644
--- a/bsp/stm32_radio/sdcard.c
+++ b/bsp/stm32_radio/sdcard.c
@@ -1,3153 +1,3163 @@
-/**
-  ******************************************************************************
-  * @file    SDIO/sdcard.c
-  * @author  MCD Application Team
-  * @version V3.1.0
-  * @date    06/19/2009
-  * @brief   This file provides all the SD Card driver firmware functions.
-  ******************************************************************************
-  * @copy
-  *
-  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
-  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
-  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
-  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
-  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
-  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
-  *
-  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
-  */
-
-/* Includes ------------------------------------------------------------------*/
-#include "sdcard.h"
-#include <stm32f10x_dma.h>
-#include <stm32f10x_sdio.h>
-
+/**
+  ******************************************************************************
+  * @file    SDIO/sdcard.c
+  * @author  MCD Application Team
+  * @version V3.1.2
+  * @date    09/28/2009
+  * @brief   This file provides all the SD Card driver firmware functions.
+  ******************************************************************************
+  * @copy
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "sdcard.h"
 #include <rtthread.h>
-
-/** @addtogroup STM32F10x_StdPeriph_Examples
-  * @{
-  */
-
-/** @addtogroup SDIO_Example
-  * @{
-  */
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-#define NULL 0
-#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
-#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00002710)
-#define SDIO_FIFO_Address               ((uint32_t)0x40018080)
-
-/* Mask for errors Card Status R1 (OCR Register) */
-#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)
-#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)
-#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)
-#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)
-#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)
-#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)
-#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)
-#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)
-#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)
-#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)
-#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)
-#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)
-#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)
-#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)
-#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)
-#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)
-#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)
-#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)
-#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)
-#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)
-
-/* Masks for R6 Response */
-#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)
-#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)
-#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)
-
-#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)
-#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)
-#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)
-#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)
-#define SD_VOLTAGE_WINDOW_MMC           ((uint32_t)0x80FF8000)
-
-#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)
-#define SD_ALLZERO                      ((uint32_t)0x00000000)
-
-#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)
-#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)
-#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)
-#define SD_CARD_PROGRAMMING             ((uint32_t)0x00000007)
-#define SD_CARD_RECEIVING               ((uint32_t)0x00000006)
-#define SD_DATATIMEOUT                  ((uint32_t)0x000FFFFF)
-#define SD_0TO7BITS                     ((uint32_t)0x000000FF)
-#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)
-#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)
-#define SD_24TO31BITS                   ((uint32_t)0xFF000000)
-#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)
-
-#define SD_HALFFIFO                     ((uint32_t)0x00000008)
-#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)
-
-/* Command Class Supported */
-#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)
-#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)
-#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)
-
-/* Following commands are SD Card Specific commands.
-   SDIO_APP_CMD should be sent before sending these commands. */
-#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)
-
-#define SDIO_INIT_CLK_DIV                  ((uint8_t)0xB2)
-#define SDIO_TRANSFER_CLK_DIV              ((uint8_t)0x1)
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
-static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
-static uint32_t DeviceMode = SD_POLLING_MODE;
-static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;
-uint32_t *SrcBuffer, *DestBuffer;
-volatile SD_Error TransferError = SD_OK;
-__IO uint32_t TransferEnd = 0;
-__IO uint32_t NumberOfBytes = 0;
-SDIO_InitTypeDef SDIO_InitStructure;
-SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
-SDIO_DataInitTypeDef SDIO_DataInitStructure;
-
-/* Private function prototypes -----------------------------------------------*/
-static SD_Error CmdError(void);
-static SD_Error CmdResp1Error(uint8_t cmd);
-static SD_Error CmdResp7Error(void);
-static SD_Error CmdResp3Error(void);
-static SD_Error CmdResp2Error(void);
-static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
-static SD_Error SDEnWideBus(FunctionalState NewState);
-static SD_Error IsCardProgramming(uint8_t *pstatus);
-static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
-static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
-static void GPIO_Configuration(void);
-static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize);
-static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize);
-
-/* Private functions ---------------------------------------------------------*/
-
-/**
-  * @brief  Initializes the SD Card and put it into StandBy State (Ready
-  *   for data transfer).
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_Init(void)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Configure SDIO interface GPIO */
-  GPIO_Configuration();
-
-  /* Enable the SDIO AHB Clock */
-  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
-
-  /* Enable the DMA2 Clock */
-  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
-
-  SDIO_DeInit();
-
-  errorstatus = SD_PowerON();
-
-  if (errorstatus != SD_OK)
-  {
-    /* CMD Response TimeOut (wait for CMDSENT flag) */
-    return(errorstatus);
-  }
-
-  errorstatus = SD_InitializeCards();
-
-  if (errorstatus != SD_OK)
-  {
-    /* CMD Response TimeOut (wait for CMDSENT flag) */
-    return(errorstatus);
-  }
-
-  /* Configure the SDIO peripheral */
-  /* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */
-  SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
-  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
-  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-  SDIO_Init(&SDIO_InitStructure);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Enquires cards about their operating voltage and configures
-  *   clock controls.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_PowerON(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t response = 0, count = 0;
-  bool validvoltage = FALSE;
-  uint32_t SDType = SD_STD_CAPACITY;
-
-  /* Power ON Sequence -------------------------------------------------------*/
-  /* Configure the SDIO peripheral */
-  SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
-  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
-  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-  SDIO_Init(&SDIO_InitStructure);
-
-  /* Set Power State to ON */
-  SDIO_SetPowerState(SDIO_PowerState_ON);
-
-  /* Enable SDIO Clock */
-  SDIO_ClockCmd(ENABLE);
-
-  /* CMD0: GO_IDLE_STATE -------------------------------------------------------*/
-  /* No CMD response required */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_GO_IDLE_STATE;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdError();
-
-  if (errorstatus != SD_OK)
-  {
-    /* CMD Response TimeOut (wait for CMDSENT flag) */
-    return(errorstatus);
-  }
-
-  /* CMD8: SEND_IF_COND --------------------------------------------------------*/
-  /* Send CMD8 to verify SD card interface operating condition */
-  /* Argument: - [31:12]: Reserved (shall be set to '0')
-               - [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
-               - [7:0]: Check Pattern (recommended 0xAA) */
-  /* CMD Response: R7 */
-  SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp7Error();
-
-  if (errorstatus == SD_OK)
-  {
-    CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /* SD Card 2.0 */
-    SDType = SD_HIGH_CAPACITY;
-  }
-  else
-  {
-    /* CMD55 */
-    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-    errorstatus = CmdResp1Error(SDIO_APP_CMD);
-  }
-  /* CMD55 */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-  errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-  /* If errorstatus is Command TimeOut, it is a MMC card */
-  /* If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
-     or SD card 1.x */
-  if (errorstatus == SD_OK)
-  {
-    /* SD CARD */
-    /* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
-    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
-    {
-
-      /* SEND CMD55 APP_CMD with RCA as 0 */
-      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_OP_COND;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp3Error();
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      response = SDIO_GetResponse(SDIO_RESP1);
-      validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);
-      count++;
-    }
-    if (count >= SD_MAX_VOLT_TRIAL)
-    {
-      errorstatus = SD_INVALID_VOLTRANGE;
-      return(errorstatus);
-    }
-
-    if (response &= SD_HIGH_CAPACITY)
-    {
-      CardType = SDIO_HIGH_CAPACITY_SD_CARD;
-    }
-
-  }/* else MMC Card */
-    else
-    {
-        CardType = SDIO_MULTIMEDIA_CARD;
-
-        /* Send CMD1 SEND_OP_COND with Argument 0x80FF8000 */
-        while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
-        {
-
-            /* SEND CMD55 APP_CMD with RCA as 0 */
-            SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_MMC;
-            SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_OP_COND;
-            SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-            SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-            SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-            SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-            errorstatus = CmdResp3Error();
-            if (errorstatus != SD_OK)
-            {
-                return(errorstatus);
-            }
-
-            response = SDIO_GetResponse(SDIO_RESP1);
-            validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);
-            count++;
-        }
-        if (count >= SD_MAX_VOLT_TRIAL)
-        {
-            errorstatus = SD_INVALID_VOLTRANGE;
-            return(errorstatus);
-        }
-    }
-
-    return(SD_OK);
-}
-
-/**
-  * @brief  Turns the SDIO output signals off.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_PowerOFF(void)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Set Power State to OFF */
-  SDIO_SetPowerState(SDIO_PowerState_OFF);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Intialises all cards or single card as the case may be.
-  *   Card(s) come into standby state.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_InitializeCards(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint16_t rca = 0x01;
-
-  if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
-  {
-    errorstatus = SD_REQUEST_NOT_APPLICABLE;
-    return(errorstatus);
-  }
-
-  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
-  {
-    /* Send CMD2 ALL_SEND_CID */
-    SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ALL_SEND_CID;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp2Error();
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-
-    CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
-    CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
-    CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
-    CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
-  }
-  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
-      ||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-  {
-    /* Send CMD3 SET_REL_ADDR with argument 0 */
-    /* SD Card publishes its RCA. */
-    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp6Error(SDIO_SET_REL_ADDR, &rca);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-  }
-    if (SDIO_MULTIMEDIA_CARD == CardType)
-    {
-        /* Send CMD3 SET_REL_ADDR with argument 0 */
-        /* SD Card publishes its RCA. */
-        SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
-        SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;
-        SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-        SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-        SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-        SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-        errorstatus = CmdResp2Error();
-
-        if (SD_OK != errorstatus)
-        {
-            return(errorstatus);
-        }
-    }
-
-  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
-  {
-    RCA = rca;
-
-    /* Send CMD9 SEND_CSD with argument as card's RCA */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_CSD;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp2Error();
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-
-    CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
-    CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
-    CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
-    CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
-  }
-
-  errorstatus = SD_OK; /* All cards get intialized */
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Returns information about specific card.
-  * @param  cardinfo : pointer to a SD_CardInfo structure
-  *   that contains all SD card information.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
-{
-  SD_Error errorstatus = SD_OK;
-  uint8_t tmp = 0;
-
-  cardinfo->CardType = (uint8_t)CardType;
-  cardinfo->RCA = (uint16_t)RCA;
-
-  /* Byte 0 */
-  tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
-  cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
-  cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
-  cardinfo->SD_csd.Reserved1 = tmp & 0x03;
-
-  /* Byte 1 */
-  tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
-  cardinfo->SD_csd.TAAC = tmp;
-
-  /* Byte 2 */
-  tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
-  cardinfo->SD_csd.NSAC = tmp;
-
-  /* Byte 3 */
-  tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
-  cardinfo->SD_csd.MaxBusClkFrec = tmp;
-
-  /* Byte 4 */
-  tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
-  cardinfo->SD_csd.CardComdClasses = tmp << 4;
-
-  /* Byte 5 */
-  tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
-  cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
-  cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
-
-  /* Byte 6 */
-  tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
-  cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
-  cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
-  cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
-  cardinfo->SD_csd.Reserved2 = 0; /* Reserved */
-
-  if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
-  {
-    cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
-
-    /* Byte 7 */
-    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
-    cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
-
-    /* Byte 8 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
-    cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
-
-    cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
-    cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
-
-    /* Byte 9 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
-    cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
-    cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
-    cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
-    /* Byte 10 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
-    cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
-
-    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
-    cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
-    cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
-    cardinfo->CardCapacity *= cardinfo->CardBlockSize;
-  }
-  else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    /* Byte 7 */
-    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
-    cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
-
-    /* Byte 8 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
-
-    cardinfo->SD_csd.DeviceSize |= (tmp << 8);
-
-    /* Byte 9 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
-
-    cardinfo->SD_csd.DeviceSize |= (tmp);
-
-    /* Byte 10 */
-    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
-
-    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
-    cardinfo->CardBlockSize = 512;
-  }
-
-
-  cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
-  cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
-
-  /* Byte 11 */
-  tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
-  cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
-
-  /* Byte 12 */
-  tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
-  cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
-  cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
-  cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
-
-  /* Byte 13 */
-  tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
-  cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
-  cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
-  cardinfo->SD_csd.Reserved3 = 0;
-  cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
-
-  /* Byte 14 */
-  tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
-  cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
-  cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
-  cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
-  cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
-  cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
-  cardinfo->SD_csd.ECC = (tmp & 0x03);
-
-  /* Byte 15 */
-  tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
-  cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
-  cardinfo->SD_csd.Reserved4 = 1;
-
-
-  /* Byte 0 */
-  tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ManufacturerID = tmp;
-
-  /* Byte 1 */
-  tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.OEM_AppliID = tmp << 8;
-
-  /* Byte 2 */
-  tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
-  cardinfo->SD_cid.OEM_AppliID |= tmp;
-
-  /* Byte 3 */
-  tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
-  cardinfo->SD_cid.ProdName1 = tmp << 24;
-
-  /* Byte 4 */
-  tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ProdName1 |= tmp << 16;
-
-  /* Byte 5 */
-  tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.ProdName1 |= tmp << 8;
-
-  /* Byte 6 */
-  tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
-  cardinfo->SD_cid.ProdName1 |= tmp;
-
-  /* Byte 7 */
-  tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
-  cardinfo->SD_cid.ProdName2 = tmp;
-
-  /* Byte 8 */
-  tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ProdRev = tmp;
-
-  /* Byte 9 */
-  tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.ProdSN = tmp << 24;
-
-  /* Byte 10 */
-  tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
-  cardinfo->SD_cid.ProdSN |= tmp << 16;
-
-  /* Byte 11 */
-  tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
-  cardinfo->SD_cid.ProdSN |= tmp << 8;
-
-  /* Byte 12 */
-  tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
-  cardinfo->SD_cid.ProdSN |= tmp;
-
-  /* Byte 13 */
-  tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
-  cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
-  cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
-
-  /* Byte 14 */
-  tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
-  cardinfo->SD_cid.ManufactDate |= tmp;
-
-  /* Byte 15 */
-  tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
-  cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
-  cardinfo->SD_cid.Reserved2 = 1;
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Enables wide bus opeartion for the requeseted card if
-  *   supported by card.
-  * @param  WideMode: Specifies the SD card wide bus mode.
-  *   This parameter can be one of the following values:
-  *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
-  *     @arg SDIO_BusWide_4b: 4-bit data transfer
-  *     @arg SDIO_BusWide_1b: 1-bit data transfer
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* MMC Card doesn't support this feature */
-  if (SDIO_MULTIMEDIA_CARD == CardType)
-  {
-    errorstatus = SD_UNSUPPORTED_FEATURE;
-    return(errorstatus);
-  }
-  else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-  {
-    if (SDIO_BusWide_8b == WideMode)
-    {
-      errorstatus = SD_UNSUPPORTED_FEATURE;
-      return(errorstatus);
-    }
-    else if (SDIO_BusWide_4b == WideMode)
-    {
-      errorstatus = SDEnWideBus(ENABLE);
-
-      if (SD_OK == errorstatus)
-      {
-        /* Configure the SDIO peripheral */
-        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
-        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
-        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-        SDIO_Init(&SDIO_InitStructure);
-      }
-    }
-    else
-    {
-      errorstatus = SDEnWideBus(DISABLE);
-
-      if (SD_OK == errorstatus)
-      {
-        /* Configure the SDIO peripheral */
-        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
-        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
-        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
-        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
-        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
-        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
-        SDIO_Init(&SDIO_InitStructure);
-      }
-    }
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Sets device mode whether to operate in Polling, Interrupt or
-  *   DMA mode.
-  * @param  Mode: Specifies the Data Transfer mode.
-  *   This parameter can be one of the following values:
-  *     @arg SD_DMA_MODE: Data transfer using DMA.
-  *     @arg SD_INTERRUPT_MODE: Data transfer using interrupts.
-  *     @arg SD_POLLING_MODE: Data transfer using flags.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SetDeviceMode(uint32_t Mode)
-{
-  SD_Error errorstatus = SD_OK;
-
-  if ((Mode == SD_DMA_MODE) || (Mode == SD_INTERRUPT_MODE) || (Mode == SD_POLLING_MODE))
-  {
-    DeviceMode = Mode;
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-  }
-  return(errorstatus);
-
-}
-
-/**
-  * @brief  Selects od Deselects the corresponding card.
-  * @param  addr: Address of the Card to be selected.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SelectDeselect(uint32_t addr)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Send CMD7 SDIO_SEL_DESEL_CARD */
-  SDIO_CmdInitStructure.SDIO_Argument =  addr;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEL_DESEL_CARD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SEL_DESEL_CARD);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to read one block from a specified address in a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  readbuff: pointer to the buffer that will contain the
-  *   received data
-  * @param  BlockSize: the SD card Data block size.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t count = 0, *tempbuff = readbuff;
-  uint8_t power = 0;
-
-  if (NULL == readbuff)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  /* Clear all DPSM configuration */
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    /* Set Block Size for Card */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-  TotalNumberOfBytes = BlockSize;
-  StopCondition = 0;
-  DestBuffer = readbuff;
-
-  /* Send CMD17 READ_SINGLE_BLOCK */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_SINGLE_BLOCK;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_READ_SINGLE_BLOCK);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-  /* In case of single block transfer, no need of stop transfer at all.*/
-  if (DeviceMode == SD_POLLING_MODE)
-  {
-    /* Polling mode */
-    while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
-    {
-      if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
-      {
-        for (count = 0; count < 8; count++)
-        {
-          *(tempbuff + count) = SDIO_ReadData();
-        }
-        tempbuff += 8;
-      }
-    }
-
-    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-      errorstatus = SD_DATA_TIMEOUT;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-      errorstatus = SD_DATA_CRC_FAIL;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-      errorstatus = SD_RX_OVERRUN;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-      errorstatus = SD_START_BIT_ERR;
-      return(errorstatus);
-    }
-    while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-    {
-      *tempbuff = SDIO_ReadData();
-      tempbuff++;
-    }
-
-    /* Clear all the static flags */
-    SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-  }
-  else if (DeviceMode == SD_INTERRUPT_MODE)
-  {
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
-    while ((TransferEnd == 0) && (TransferError == SD_OK))
-    {}
-    if (TransferError != SD_OK)
-    {
-      return(TransferError);
-    }
-  }
-  else if (DeviceMode == SD_DMA_MODE)
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup SDIO_Example
+  * @{
+  */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+#define NULL 0
+#define SDIO_STATIC_FLAGS               ((uint32_t)0x000005FF)
+#define SDIO_CMD0TIMEOUT                ((uint32_t)0x00002710)
+#define SDIO_FIFO_Address               ((uint32_t)0x40018080)
+
+/* Mask for errors Card Status R1 (OCR Register) */
+#define SD_OCR_ADDR_OUT_OF_RANGE        ((uint32_t)0x80000000)
+#define SD_OCR_ADDR_MISALIGNED          ((uint32_t)0x40000000)
+#define SD_OCR_BLOCK_LEN_ERR            ((uint32_t)0x20000000)
+#define SD_OCR_ERASE_SEQ_ERR            ((uint32_t)0x10000000)
+#define SD_OCR_BAD_ERASE_PARAM          ((uint32_t)0x08000000)
+#define SD_OCR_WRITE_PROT_VIOLATION     ((uint32_t)0x04000000)
+#define SD_OCR_LOCK_UNLOCK_FAILED       ((uint32_t)0x01000000)
+#define SD_OCR_COM_CRC_FAILED           ((uint32_t)0x00800000)
+#define SD_OCR_ILLEGAL_CMD              ((uint32_t)0x00400000)
+#define SD_OCR_CARD_ECC_FAILED          ((uint32_t)0x00200000)
+#define SD_OCR_CC_ERROR                 ((uint32_t)0x00100000)
+#define SD_OCR_GENERAL_UNKNOWN_ERROR    ((uint32_t)0x00080000)
+#define SD_OCR_STREAM_READ_UNDERRUN     ((uint32_t)0x00040000)
+#define SD_OCR_STREAM_WRITE_OVERRUN     ((uint32_t)0x00020000)
+#define SD_OCR_CID_CSD_OVERWRIETE       ((uint32_t)0x00010000)
+#define SD_OCR_WP_ERASE_SKIP            ((uint32_t)0x00008000)
+#define SD_OCR_CARD_ECC_DISABLED        ((uint32_t)0x00004000)
+#define SD_OCR_ERASE_RESET              ((uint32_t)0x00002000)
+#define SD_OCR_AKE_SEQ_ERROR            ((uint32_t)0x00000008)
+#define SD_OCR_ERRORBITS                ((uint32_t)0xFDFFE008)
+
+/* Masks for R6 Response */
+#define SD_R6_GENERAL_UNKNOWN_ERROR     ((uint32_t)0x00002000)
+#define SD_R6_ILLEGAL_CMD               ((uint32_t)0x00004000)
+#define SD_R6_COM_CRC_FAILED            ((uint32_t)0x00008000)
+
+#define SD_VOLTAGE_WINDOW_SD            ((uint32_t)0x80100000)
+#define SD_HIGH_CAPACITY                ((uint32_t)0x40000000)
+#define SD_STD_CAPACITY                 ((uint32_t)0x00000000)
+#define SD_CHECK_PATTERN                ((uint32_t)0x000001AA)
+#define SD_VOLTAGE_WINDOW_MMC           ((uint32_t)0x80FF8000)
+
+#define SD_MAX_VOLT_TRIAL               ((uint32_t)0x0000FFFF)
+#define SD_ALLZERO                      ((uint32_t)0x00000000)
+
+#define SD_WIDE_BUS_SUPPORT             ((uint32_t)0x00040000)
+#define SD_SINGLE_BUS_SUPPORT           ((uint32_t)0x00010000)
+#define SD_CARD_LOCKED                  ((uint32_t)0x02000000)
+#define SD_CARD_PROGRAMMING             ((uint32_t)0x00000007)
+#define SD_CARD_RECEIVING               ((uint32_t)0x00000006)
+#define SD_DATATIMEOUT                  ((uint32_t)0x000FFFFF)
+#define SD_0TO7BITS                     ((uint32_t)0x000000FF)
+#define SD_8TO15BITS                    ((uint32_t)0x0000FF00)
+#define SD_16TO23BITS                   ((uint32_t)0x00FF0000)
+#define SD_24TO31BITS                   ((uint32_t)0xFF000000)
+#define SD_MAX_DATA_LENGTH              ((uint32_t)0x01FFFFFF)
+
+#define SD_HALFFIFO                     ((uint32_t)0x00000008)
+#define SD_HALFFIFOBYTES                ((uint32_t)0x00000020)
+
+/* Command Class Supported */
+#define SD_CCCC_LOCK_UNLOCK             ((uint32_t)0x00000080)
+#define SD_CCCC_WRITE_PROT              ((uint32_t)0x00000040)
+#define SD_CCCC_ERASE                   ((uint32_t)0x00000020)
+
+/* Following commands are SD Card Specific commands.
+   SDIO_APP_CMD should be sent before sending these commands. */
+#define SDIO_SEND_IF_COND               ((uint32_t)0x00000008)
+
+#define SDIO_INIT_CLK_DIV                  ((uint8_t)0xB2)
+#define SDIO_TRANSFER_CLK_DIV              ((uint8_t)0x1)
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+static uint32_t CardType =  SDIO_STD_CAPACITY_SD_CARD_V1_1;
+static uint32_t CSD_Tab[4], CID_Tab[4], RCA = 0;
+static uint32_t DeviceMode = SD_POLLING_MODE;
+static uint32_t TotalNumberOfBytes = 0, StopCondition = 0;
+uint32_t *SrcBuffer, *DestBuffer;
+volatile SD_Error TransferError = SD_OK;
+__IO uint32_t TransferEnd = 0;
+__IO uint32_t NumberOfBytes = 0;
+SDIO_InitTypeDef SDIO_InitStructure;
+SDIO_CmdInitTypeDef SDIO_CmdInitStructure;
+SDIO_DataInitTypeDef SDIO_DataInitStructure;
+
+/* Private function prototypes -----------------------------------------------*/
+static SD_Error CmdError(void);
+static SD_Error CmdResp1Error(uint8_t cmd);
+static SD_Error CmdResp7Error(void);
+static SD_Error CmdResp3Error(void);
+static SD_Error CmdResp2Error(void);
+static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca);
+static SD_Error SDEnWideBus(FunctionalState NewState);
+static SD_Error IsCardProgramming(uint8_t *pstatus);
+static SD_Error FindSCR(uint16_t rca, uint32_t *pscr);
+static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes);
+static void GPIO_Configuration(void);
+static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize);
+static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize);
+
+/* Private functions ---------------------------------------------------------*/
+
+/**
+  * @brief  Initializes the SD Card and put it into StandBy State (Ready
+  *   for data transfer).
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_Init(void)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /* Configure SDIO interface GPIO */
+  GPIO_Configuration();
+
+  /* Enable the SDIO AHB Clock */
+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SDIO, ENABLE);
+
+  /* Enable the DMA2 Clock */
+  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA2, ENABLE);
+
+  SDIO_DeInit();
+
+  errorstatus = SD_PowerON();
+
+  if (errorstatus != SD_OK)
   {
-    int cnt = 0;
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
-    SDIO_DMACmd(ENABLE);
-    DMA_RxConfiguration(readbuff, BlockSize);
-    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+    /* CMD Response TimeOut (wait for CMDSENT flag) */
+    return(errorstatus);
+  }
+
+  errorstatus = SD_InitializeCards();
+
+  if (errorstatus != SD_OK)
+  {
+    /* CMD Response TimeOut (wait for CMDSENT flag) */
+    return(errorstatus);
+  }
+
+  /* Configure the SDIO peripheral */
+  /* HCLK = 72 MHz, SDIOCLK = 72 MHz, SDIO_CK = HCLK/(2 + 1) = 24 MHz */
+  SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
+  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
+  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+  SDIO_Init(&SDIO_InitStructure);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Enquires cards about their operating voltage and configures
+  *   clock controls.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_PowerON(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t response = 0, count = 0;
+  bool validvoltage = FALSE;
+  uint32_t SDType = SD_STD_CAPACITY;
+
+  /* Power ON Sequence -------------------------------------------------------*/
+  /* Configure the SDIO peripheral */
+  SDIO_InitStructure.SDIO_ClockDiv = SDIO_INIT_CLK_DIV; /* HCLK = 72MHz, SDIOCLK = 72MHz, SDIO_CK = HCLK/(178 + 2) = 400 KHz */
+  SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+  SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+  SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+  SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
+  SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+  SDIO_Init(&SDIO_InitStructure);
+
+  /* Set Power State to ON */
+  SDIO_SetPowerState(SDIO_PowerState_ON);
+
+  /* Enable SDIO Clock */
+  SDIO_ClockCmd(ENABLE);
+
+  /* CMD0: GO_IDLE_STATE -------------------------------------------------------*/
+  /* No CMD response required */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_GO_IDLE_STATE;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_No;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdError();
+
+  if (errorstatus != SD_OK)
+  {
+    /* CMD Response TimeOut (wait for CMDSENT flag) */
+    return(errorstatus);
+  }
+
+  /* CMD8: SEND_IF_COND --------------------------------------------------------*/
+  /* Send CMD8 to verify SD card interface operating condition */
+  /* Argument: - [31:12]: Reserved (shall be set to '0')
+               - [11:8]: Supply Voltage (VHS) 0x1 (Range: 2.7-3.6 V)
+               - [7:0]: Check Pattern (recommended 0xAA) */
+  /* CMD Response: R7 */
+  SDIO_CmdInitStructure.SDIO_Argument = SD_CHECK_PATTERN;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_IF_COND;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp7Error();
+
+  if (errorstatus == SD_OK)
+  {
+    CardType = SDIO_STD_CAPACITY_SD_CARD_V2_0; /* SD Card 2.0 */
+    SDType = SD_HIGH_CAPACITY;
+  }
+  else
+  {
+    /* CMD55 */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+    errorstatus = CmdResp1Error(SDIO_APP_CMD);
+  }
+  /* CMD55 */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+  errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+  /* If errorstatus is Command TimeOut, it is a MMC card */
+  /* If errorstatus is SD_OK it is a SD card: SD card 2.0 (voltage range mismatch)
+     or SD card 1.x */
+  if (errorstatus == SD_OK)
+  {
+    /* SD CARD */
+    /* Send ACMD41 SD_APP_OP_COND with Argument 0x80100000 */
+    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
     {
-		cnt ++;
-		if (cnt > 10 * 50000)
-		{
-			rt_kprintf("DMA flag 0x%08x\n", DMA_GetFlagStatus(DMA2_FLAG_TC4));
-			/* Clear all DPSM configuration */
-			SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-			SDIO_DataInitStructure.SDIO_DataLength = 0;
-			SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-			SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-			SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-			SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-			SDIO_DataConfig(&SDIO_DataInitStructure);
-			SDIO_DMACmd(DISABLE);
-			errorstatus = SD_ERROR;
-			break;
-		}
-	}
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to read blocks from a specified address  in a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  readbuff: pointer to the buffer that will contain the
-  *   received data.
-  * @param  BlockSize: the SD card Data block size.
-  * @param  NumberOfBlocks: number of blocks to be read.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t count = 0, *tempbuff = readbuff;
-  uint8_t power = 0;
-
-  if (NULL == readbuff)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  /* Clear all DPSM configuration */
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-
-  if ((BlockSize > 0) && (BlockSize <= 2048) && (0 == (BlockSize & (BlockSize - 1))))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    /* Set Block Size for Card */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  if (NumberOfBlocks > 1)
-  {
-    /* Common to all modes */
-    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
-    {
-      errorstatus = SD_INVALID_PARAMETER;
-      return(errorstatus);
-    }
-
-    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
-    StopCondition = 1;
-    DestBuffer = readbuff;
-
-    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
-    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-    SDIO_DataConfig(&SDIO_DataInitStructure);
-
-    /* Send CMD18 READ_MULT_BLOCK with argument data address */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_MULT_BLOCK;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_READ_MULT_BLOCK);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-
-    if (DeviceMode == SD_POLLING_MODE)
-    {
-      /* Polling mode */
-      while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
-      {
-        if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
-        {
-          for (count = 0; count < SD_HALFFIFO; count++)
-          {
-            *(tempbuff + count) = SDIO_ReadData();
-          }
-          tempbuff += SD_HALFFIFO;
-        }
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-        errorstatus = SD_DATA_TIMEOUT;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-        errorstatus = SD_DATA_CRC_FAIL;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-        errorstatus = SD_RX_OVERRUN;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-        errorstatus = SD_START_BIT_ERR;
-        return(errorstatus);
-      }
-      while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-      {
-        *tempbuff = SDIO_ReadData();
-        tempbuff++;
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
-      {
-        /* In Case Of SD-CARD Send Command STOP_TRANSMISSION */
-        if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType))
-        {
-          /* Send CMD12 STOP_TRANSMISSION */
-          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
-          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-          SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
-
-          if (errorstatus != SD_OK)
-          {
-            return(errorstatus);
-          }
-        }
-      }
-      /* Clear all the static flags */
-      SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-    }
-    else if (DeviceMode == SD_INTERRUPT_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-    else if (DeviceMode == SD_DMA_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
-      SDIO_DMACmd(ENABLE);
-      DMA_RxConfiguration(readbuff, (NumberOfBlocks * BlockSize));
-      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
-      {}
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to write one block starting from a specified address
-  *   in a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  writebuff: pointer to the buffer that contain the data to be
-  *   transferred.
-  * @param  BlockSize: the SD card Data block size.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize)
-{
-  SD_Error errorstatus = SD_OK;
-  uint8_t  power = 0, cardstate = 0;
-  uint32_t timeout = 0, bytestransferred = 0;
-  uint32_t cardstatus = 0, count = 0, restwords = 0;
-  uint32_t *tempbuff = writebuff;
-
-  if (writebuff == NULL)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-
-  /* Set the block size, both on controller and card */
-  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  /* Wait till card is ready for data Added */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  cardstatus = SDIO_GetResponse(SDIO_RESP1);
-
-  timeout = SD_DATATIMEOUT;
-
-  while (((cardstatus & 0x00000100) == 0) && (timeout > 0))
-  {
-    timeout--;
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-    cardstatus = SDIO_GetResponse(SDIO_RESP1);
-  }
-
-  if (timeout == 0)
-  {
-    return(SD_ERROR);
-  }
-
-  /* Send CMD24 WRITE_SINGLE_BLOCK */
-  SDIO_CmdInitStructure.SDIO_Argument = addr;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_SINGLE_BLOCK;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_WRITE_SINGLE_BLOCK);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  TotalNumberOfBytes = BlockSize;
-  StopCondition = 0;
-  SrcBuffer = writebuff;
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-  /* In case of single data block transfer no need of stop command at all */
-  if (DeviceMode == SD_POLLING_MODE)
-  {
-    while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
-    {
-      if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
-      {
-        if ((TotalNumberOfBytes - bytestransferred) < 32)
-        {
-          restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes -  bytestransferred) / 4 + 1);
-
-          for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
-          {
-            SDIO_WriteData(*tempbuff);
-          }
-        }
-        else
-        {
-          for (count = 0; count < 8; count++)
-          {
-            SDIO_WriteData(*(tempbuff + count));
-          }
-          tempbuff += 8;
-          bytestransferred += 32;
-        }
-      }
-    }
-    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-      errorstatus = SD_DATA_TIMEOUT;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-      errorstatus = SD_DATA_CRC_FAIL;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
-      errorstatus = SD_TX_UNDERRUN;
-      return(errorstatus);
-    }
-    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-    {
-      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-      errorstatus = SD_START_BIT_ERR;
-      return(errorstatus);
-    }
-  }
-  else if (DeviceMode == SD_INTERRUPT_MODE)
-  {
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-    while ((TransferEnd == 0) && (TransferError == SD_OK))
-    {}
-    if (TransferError != SD_OK)
-    {
-      return(TransferError);
-    }
-  }
-  else if (DeviceMode == SD_DMA_MODE)
-  {
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-    DMA_TxConfiguration(writebuff, BlockSize);
-    SDIO_DMACmd(ENABLE);
-    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
-    {}
-    while ((TransferEnd == 0) && (TransferError == SD_OK))
-    {}
-    if (TransferError != SD_OK)
-    {
-      return(TransferError);
-    }
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* Wait till the card is in programming state */
-  errorstatus = IsCardProgramming(&cardstate);
-
-  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
-  {
-    errorstatus = IsCardProgramming(&cardstate);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to write blocks starting from a specified address in
-  *   a card.
-  * @param  addr: Address from where data are to be read.
-  * @param  writebuff: pointer to the buffer that contain the data to be
-  *   transferred.
-  * @param  BlockSize: the SD card Data block size.
-  * @param  NumberOfBlocks: number of blocks to be written.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
-{
-  SD_Error errorstatus = SD_OK;
-  uint8_t  power = 0, cardstate = 0;
-  uint32_t bytestransferred = 0;
-  uint32_t count = 0, restwords = 0;
-  uint32_t *tempbuff = writebuff;
-
-  if (writebuff == NULL)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  TransferError = SD_OK;
-  TransferEnd = 0;
-  TotalNumberOfBytes = 0;
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 0;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-  SDIO_DMACmd(DISABLE);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    BlockSize = 512;
-    addr /= 512;
-  }
-
-  /* Set the block size, both on controller and card */
-  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
-  {
-    power = convert_from_bytes_to_power_of_two(BlockSize);
-
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-  }
-  else
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  /* Wait till card is ready for data Added */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  if (NumberOfBlocks > 1)
-  {
-    /* Common to all modes */
-    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
-    {
-      errorstatus = SD_INVALID_PARAMETER;
-      return(errorstatus);
-    }
-
-    if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-    {
-      /* To improve performance */
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-      /* To improve performance */
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCK_COUNT;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_SET_BLOCK_COUNT);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-    }
-
-    /* Send CMD25 WRITE_MULT_BLOCK with argument data address */
-    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_MULT_BLOCK;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_WRITE_MULT_BLOCK);
-
-    if (SD_OK != errorstatus)
-    {
-      return(errorstatus);
-    }
-
-    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
-    StopCondition = 1;
-    SrcBuffer = writebuff;
-
-    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
-    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
-    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
-    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-    SDIO_DataConfig(&SDIO_DataInitStructure);
-
-    if (DeviceMode == SD_POLLING_MODE)
-    {
-      while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
-      {
-        if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
-        {
-          if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))
-          {
-            for (count = 0; count < SD_HALFFIFO; count++)
-            {
-              SDIO_WriteData(*(tempbuff + count));
-            }
-            tempbuff += SD_HALFFIFO;
-            bytestransferred += SD_HALFFIFOBYTES;
-          }
-          else
-          {
-            restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :
-                        ((TotalNumberOfBytes - bytestransferred) / 4 + 1);
-
-            for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
-            {
-              SDIO_WriteData(*tempbuff);
-            }
-          }
-        }
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-        errorstatus = SD_DATA_TIMEOUT;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-        errorstatus = SD_DATA_CRC_FAIL;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
-        errorstatus = SD_TX_UNDERRUN;
-        return(errorstatus);
-      }
-      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-      {
-        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-        errorstatus = SD_START_BIT_ERR;
-        return(errorstatus);
-      }
-
-      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
-      {
-       if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-        {
-          /* Send CMD12 STOP_TRANSMISSION */
-          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
-          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-          SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
-
-          if (errorstatus != SD_OK)
-          {
-            return(errorstatus);
-          }
-        }
-      }
-    }
-    else if (DeviceMode == SD_INTERRUPT_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-    else if (DeviceMode == SD_DMA_MODE)
-    {
-      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
-      SDIO_DMACmd(ENABLE);
-      DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));
-      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
-      {}
-      while ((TransferEnd == 0) && (TransferError == SD_OK))
-      {}
-      if (TransferError != SD_OK)
-      {
-        return(TransferError);
-      }
-    }
-  }
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* Wait till the card is in programming state */
-  errorstatus = IsCardProgramming(&cardstate);
-
-  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
-  {
-    errorstatus = IsCardProgramming(&cardstate);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Gets the cuurent data transfer state.
-  * @param  None
-  * @retval SDTransferState: Data Transfer state.
-  *   This value can be:
-  *             - SD_NO_TRANSFER: No data transfer is acting
-  *             - SD_TRANSFER_IN_PROGRESS: Data transfer is acting
-  */
-SDTransferState SD_GetTransferState(void)
-{
-  if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
-  {
-    return(SD_TRANSFER_IN_PROGRESS);
-  }
-  else
-  {
-    return(SD_NO_TRANSFER);
-  }
-}
-
-/**
-  * @brief  Aborts an ongoing data transfer.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_StopTransfer(void)
-{
-  SD_Error errorstatus = SD_OK;
-
-  /* Send CMD12 STOP_TRANSMISSION  */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to erase memory area specified for the given card.
-  * @param  startaddr: the start address.
-  * @param  endaddr: the end address.
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t delay = 0;
-  __IO uint32_t maxdelay = 0;
-  uint8_t cardstate = 0;
-
-  /* Check if the card coomnd class supports erase command */
-  if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
-  {
-    errorstatus = SD_REQUEST_NOT_APPLICABLE;
-    return(errorstatus);
-  }
-
-  maxdelay = 72000 / ((SDIO->CLKCR & 0xFF) + 2);
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
-  {
-    startaddr /= 512;
-    endaddr /= 512;
-  }
-
-  /* According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
-  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
-  {
-    /* Send CMD32 SD_ERASE_GRP_START with argument as addr  */
-    SDIO_CmdInitStructure.SDIO_Argument = startaddr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_START;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_START);
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-
-    /* Send CMD33 SD_ERASE_GRP_END with argument as addr  */
-    SDIO_CmdInitStructure.SDIO_Argument = endaddr;
-    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_END;
-    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-    SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_END);
-    if (errorstatus != SD_OK)
-    {
-      return(errorstatus);
-    }
-  }
-
-  /* Send CMD38 ERASE */
-  SDIO_CmdInitStructure.SDIO_Argument = 0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ERASE;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_ERASE);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  for (delay = 0; delay < maxdelay; delay++)
-  {}
-
-  /* Wait till the card is in programming state */
-  errorstatus = IsCardProgramming(&cardstate);
-
-  while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
-  {
-    errorstatus = IsCardProgramming(&cardstate);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Returns the current card's status.
-  * @param  pcardstatus: pointer to the buffer that will contain the SD
-  *   card status (Card Status register).
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SendStatus(uint32_t *pcardstatus)
-{
-  SD_Error errorstatus = SD_OK;
-
-  if (pcardstatus == NULL)
-  {
-    errorstatus = SD_INVALID_PARAMETER;
-    return(errorstatus);
-  }
-
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  *pcardstatus = SDIO_GetResponse(SDIO_RESP1);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Returns the current SD card's status.
-  * @param  psdstatus: pointer to the buffer that will contain the SD
-  *   card status (SD Status register).
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_SendSDStatus(uint32_t *psdstatus)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t count = 0;
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  /* Set block size for card if it is not equal to current block size for card. */
-  SDIO_CmdInitStructure.SDIO_Argument = 64;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  /* CMD55 */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-  errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 64;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-  /* Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
-  SDIO_CmdInitStructure.SDIO_Argument = 0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_STAUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-  errorstatus = CmdResp1Error(SDIO_SD_APP_STAUS);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
-  {
-    if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
-    {
-      for (count = 0; count < 8; count++)
-      {
-        *(psdstatus + count) = SDIO_ReadData();
-      }
-      psdstatus += 8;
-    }
-  }
-
-  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-    errorstatus = SD_DATA_TIMEOUT;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-    errorstatus = SD_DATA_CRC_FAIL;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-    errorstatus = SD_RX_OVERRUN;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-    errorstatus = SD_START_BIT_ERR;
-    return(errorstatus);
-  }
-
-  while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-  {
-    *psdstatus = SDIO_ReadData();
-    psdstatus++;
-  }
-
-  /* Clear all the static status flags*/
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-  psdstatus -= 16;
-  for (count = 0; count < 16; count++)
-  {
-    psdstatus[count] = ((psdstatus[count] & SD_0TO7BITS) << 24) |((psdstatus[count] & SD_8TO15BITS) << 8) |
-                       ((psdstatus[count] & SD_16TO23BITS) >> 8) |((psdstatus[count] & SD_24TO31BITS) >> 24);
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Allows to process all the interrupts that are high.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-SD_Error SD_ProcessIRQSrc(void)
-{
-  uint32_t count = 0, restwords = 0;
-
-  if (DeviceMode == SD_INTERRUPT_MODE)
-  {
-    if (SDIO_GetITStatus(SDIO_IT_RXFIFOHF) != RESET)
-    {
-      for (count = 0; count < SD_HALFFIFO; count++)
-      {
-        *(DestBuffer + count) = SDIO_ReadData();
-      }
-      DestBuffer += SD_HALFFIFO;
-      NumberOfBytes += SD_HALFFIFOBYTES;
-    }
-    else if (SDIO_GetITStatus(SDIO_IT_TXFIFOHE) != RESET)
-    {
-      if ((TotalNumberOfBytes - NumberOfBytes) < SD_HALFFIFOBYTES)
-      {
-        restwords = ((TotalNumberOfBytes - NumberOfBytes) %  4 == 0) ?
-                    ((TotalNumberOfBytes - NumberOfBytes) / 4) :
-                    ((TotalNumberOfBytes - NumberOfBytes) / 4 + 1);
-
-        for (count = 0; count < restwords;  count++, SrcBuffer++, NumberOfBytes += 4)
-        {
-          SDIO_WriteData(*SrcBuffer);
-        }
-      }
-      else
-      {
-        for (count = 0; count < SD_HALFFIFO; count++)
-        {
-          SDIO_WriteData(*(SrcBuffer + count));
-        }
-
-        SrcBuffer += SD_HALFFIFO;
-        NumberOfBytes += SD_HALFFIFOBYTES;
-      }
-    }
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
-  {
-    if (DeviceMode != SD_DMA_MODE)
-    {
-      while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)  &&  (NumberOfBytes < TotalNumberOfBytes))
-      {
-        *DestBuffer = SDIO_ReadData();
-        DestBuffer++;
-        NumberOfBytes += 4;
-      }
-    }
-
-    if (StopCondition == 1)
-    {
-      TransferError = SD_StopTransfer();
-    }
-    else
-    {
-      TransferError = SD_OK;
-    }
-    SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    TransferEnd = 1;
-    NumberOfBytes = 0;
-    return(TransferError);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_DATA_CRC_FAIL;
-    return(SD_DATA_CRC_FAIL);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_DATA_TIMEOUT;
-    return(SD_DATA_TIMEOUT);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_RX_OVERRUN;
-    return(SD_RX_OVERRUN);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_TX_UNDERRUN;
-    return(SD_TX_UNDERRUN);
-  }
-
-  if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
-  {
-    SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
-    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
-                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
-                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
-    NumberOfBytes = 0;
-    TransferError = SD_START_BIT_ERR;
-    return(SD_START_BIT_ERR);
-  }
-
-  return(SD_OK);
-}
-
-/**
-  * @brief  Checks for error conditions for CMD0.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdError(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t timeout;
-
-  timeout = SDIO_CMD0TIMEOUT; /* 10000 */
-
-  while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
-  {
-    timeout--;
-  }
-
-  if (timeout == 0)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R7.
-  *   response.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp7Error(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-  uint32_t timeout = SDIO_CMD0TIMEOUT;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
-  {
-    timeout--;
-    status = SDIO->STA;
-  }
-
-  if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
-  {
-    /* Card is not V2.0 complient or card does not support the set voltage range */
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-
-  if (status & SDIO_FLAG_CMDREND)
-  {
-    /* Card is SD V2.0 compliant */
-    errorstatus = SD_OK;
-    SDIO_ClearFlag(SDIO_FLAG_CMDREND);
-    return(errorstatus);
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R1.
-  *   response
-  * @param  cmd: The sent command index.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp1Error(uint8_t cmd)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-  uint32_t response_r1;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  /* Check response received is of desired command */
-  if (SDIO_GetCommandResponse() != cmd)
-  {
-    errorstatus = SD_ILLEGAL_CMD;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* We have received response, retrieve it for analysis  */
-  response_r1 = SDIO_GetResponse(SDIO_RESP1);
-
-  if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
-  {
-    return(errorstatus);
-  }
-
-  if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)
-  {
-    return(SD_ADDR_OUT_OF_RANGE);
-  }
-
-  if (response_r1 & SD_OCR_ADDR_MISALIGNED)
-  {
-    return(SD_ADDR_MISALIGNED);
-  }
-
-  if (response_r1 & SD_OCR_BLOCK_LEN_ERR)
-  {
-    return(SD_BLOCK_LEN_ERR);
-  }
-
-  if (response_r1 & SD_OCR_ERASE_SEQ_ERR)
-  {
-    return(SD_ERASE_SEQ_ERR);
-  }
-
-  if (response_r1 & SD_OCR_BAD_ERASE_PARAM)
-  {
-    return(SD_BAD_ERASE_PARAM);
-  }
-
-  if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)
-  {
-    return(SD_WRITE_PROT_VIOLATION);
-  }
-
-  if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)
-  {
-    return(SD_LOCK_UNLOCK_FAILED);
-  }
-
-  if (response_r1 & SD_OCR_COM_CRC_FAILED)
-  {
-    return(SD_COM_CRC_FAILED);
-  }
-
-  if (response_r1 & SD_OCR_ILLEGAL_CMD)
-  {
-    return(SD_ILLEGAL_CMD);
-  }
-
-  if (response_r1 & SD_OCR_CARD_ECC_FAILED)
-  {
-    return(SD_CARD_ECC_FAILED);
-  }
-
-  if (response_r1 & SD_OCR_CC_ERROR)
-  {
-    return(SD_CC_ERROR);
-  }
-
-  if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
-  {
-    return(SD_GENERAL_UNKNOWN_ERROR);
-  }
-
-  if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)
-  {
-    return(SD_STREAM_READ_UNDERRUN);
-  }
-
-  if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)
-  {
-    return(SD_STREAM_WRITE_OVERRUN);
-  }
-
-  if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)
-  {
-    return(SD_CID_CSD_OVERWRITE);
-  }
-
-  if (response_r1 & SD_OCR_WP_ERASE_SKIP)
-  {
-    return(SD_WP_ERASE_SKIP);
-  }
-
-  if (response_r1 & SD_OCR_CARD_ECC_DISABLED)
-  {
-    return(SD_CARD_ECC_DISABLED);
-  }
-
-  if (response_r1 & SD_OCR_ERASE_RESET)
-  {
-    return(SD_ERASE_RESET);
-  }
-
-  if (response_r1 & SD_OCR_AKE_SEQ_ERROR)
-  {
-    return(SD_AKE_SEQ_ERROR);
-  }
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R3 (OCR).
-  *   response.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp3Error(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R2 (CID or CSD).
-  *   response.
-  * @param  None
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp2Error(void)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Checks for error conditions for R6 (RCA).
-  *   response.
-  * @param  cmd: The sent command index.
-  * @param  prca: pointer to the variable that will contain the SD
-  *   card relative address RCA.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
-{
-  SD_Error errorstatus = SD_OK;
-  uint32_t status;
-  uint32_t response_r1;
-
-  status = SDIO->STA;
-
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  /* Check response received is of desired command */
-  if (SDIO_GetCommandResponse() != cmd)
-  {
-    errorstatus = SD_ILLEGAL_CMD;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  /* We have received response, retrieve it.  */
-  response_r1 = SDIO_GetResponse(SDIO_RESP1);
-
-  if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
-  {
-    *prca = (uint16_t) (response_r1 >> 16);
-    return(errorstatus);
-  }
-
-  if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
-  {
-    return(SD_GENERAL_UNKNOWN_ERROR);
-  }
-
-  if (response_r1 & SD_R6_ILLEGAL_CMD)
-  {
-    return(SD_ILLEGAL_CMD);
-  }
-
-  if (response_r1 & SD_R6_COM_CRC_FAILED)
-  {
-    return(SD_COM_CRC_FAILED);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Enables or disables the SDIO wide bus mode.
-  * @param  NewState: new state of the SDIO wide bus mode.
-  *   This parameter can be: ENABLE or DISABLE.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error SDEnWideBus(FunctionalState NewState)
-{
-  SD_Error errorstatus = SD_OK;
-
-  uint32_t scr[2] = {0, 0};
-
-  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
-  {
-    errorstatus = SD_LOCK_UNLOCK_FAILED;
-    return(errorstatus);
-  }
-
-  /* Get SCR Register */
-  errorstatus = FindSCR(RCA, scr);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  /* If wide bus operation to be enabled */
-  if (NewState == ENABLE)
-  {
-    /* If requested card supports wide bus operation */
-    if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
-    {
-      /* Send CMD55 APP_CMD with argument as card's RCA.*/
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
-      SDIO_CmdInitStructure.SDIO_Argument = 0x2;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-      return(errorstatus);
-    }
-    else
-    {
-      errorstatus = SD_REQUEST_NOT_APPLICABLE;
-      return(errorstatus);
-    }
-  }   /* If wide bus operation to be disabled */
-  else
-  {
-    /* If requested card supports 1 bit mode operation */
-    if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
-    {
-      /* Send CMD55 APP_CMD with argument as card's RCA.*/
-      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-
-      errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
-      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
-      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;
-      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-      SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);
-
-      if (errorstatus != SD_OK)
-      {
-        return(errorstatus);
-      }
-
-      return(errorstatus);
-    }
-    else
-    {
-      errorstatus = SD_REQUEST_NOT_APPLICABLE;
-      return(errorstatus);
-    }
-  }
-}
-
-/**
-  * @brief  Checks if the SD card is in programming state.
-  * @param  pstatus: pointer to the variable that will contain the SD
-  *   card state.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error IsCardProgramming(uint8_t *pstatus)
-{
-  SD_Error errorstatus = SD_OK;
-  __IO uint32_t respR1 = 0, status = 0;
-
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  status = SDIO->STA;
-  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
-  {
-    status = SDIO->STA;
-  }
-
-  if (status & SDIO_FLAG_CTIMEOUT)
-  {
-    errorstatus = SD_CMD_RSP_TIMEOUT;
-    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
-    return(errorstatus);
-  }
-  else if (status & SDIO_FLAG_CCRCFAIL)
-  {
-    errorstatus = SD_CMD_CRC_FAIL;
-    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
-    return(errorstatus);
-  }
-
-  status = (uint32_t)SDIO_GetCommandResponse();
-
-  /* Check response received is of desired command */
-  if (status != SDIO_SEND_STATUS)
-  {
-    errorstatus = SD_ILLEGAL_CMD;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-
-  /* We have received response, retrieve it for analysis  */
-  respR1 = SDIO_GetResponse(SDIO_RESP1);
-
-  /* Find out card status */
-  *pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);
-
-  if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
-  {
-    return(errorstatus);
-  }
-
-  if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
-  {
-    return(SD_ADDR_OUT_OF_RANGE);
-  }
-
-  if (respR1 & SD_OCR_ADDR_MISALIGNED)
-  {
-    return(SD_ADDR_MISALIGNED);
-  }
-
-  if (respR1 & SD_OCR_BLOCK_LEN_ERR)
-  {
-    return(SD_BLOCK_LEN_ERR);
-  }
-
-  if (respR1 & SD_OCR_ERASE_SEQ_ERR)
-  {
-    return(SD_ERASE_SEQ_ERR);
-  }
-
-  if (respR1 & SD_OCR_BAD_ERASE_PARAM)
-  {
-    return(SD_BAD_ERASE_PARAM);
-  }
-
-  if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
-  {
-    return(SD_WRITE_PROT_VIOLATION);
-  }
-
-  if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
-  {
-    return(SD_LOCK_UNLOCK_FAILED);
-  }
-
-  if (respR1 & SD_OCR_COM_CRC_FAILED)
-  {
-    return(SD_COM_CRC_FAILED);
-  }
-
-  if (respR1 & SD_OCR_ILLEGAL_CMD)
-  {
-    return(SD_ILLEGAL_CMD);
-  }
-
-  if (respR1 & SD_OCR_CARD_ECC_FAILED)
-  {
-    return(SD_CARD_ECC_FAILED);
-  }
-
-  if (respR1 & SD_OCR_CC_ERROR)
-  {
-    return(SD_CC_ERROR);
-  }
-
-  if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
-  {
-    return(SD_GENERAL_UNKNOWN_ERROR);
-  }
-
-  if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
-  {
-    return(SD_STREAM_READ_UNDERRUN);
-  }
-
-  if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
-  {
-    return(SD_STREAM_WRITE_OVERRUN);
-  }
-
-  if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
-  {
-    return(SD_CID_CSD_OVERWRITE);
-  }
-
-  if (respR1 & SD_OCR_WP_ERASE_SKIP)
-  {
-    return(SD_WP_ERASE_SKIP);
-  }
-
-  if (respR1 & SD_OCR_CARD_ECC_DISABLED)
-  {
-    return(SD_CARD_ECC_DISABLED);
-  }
-
-  if (respR1 & SD_OCR_ERASE_RESET)
-  {
-    return(SD_ERASE_RESET);
-  }
-
-  if (respR1 & SD_OCR_AKE_SEQ_ERROR)
-  {
-    return(SD_AKE_SEQ_ERROR);
-  }
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Find the SD card SCR register value.
-  * @param  rca: selected card address.
-  * @param  pscr: pointer to the buffer that will contain the SCR value.
-  * @retval SD_Error: SD Card Error code.
-  */
-static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
-{
-  uint32_t index = 0;
-  SD_Error errorstatus = SD_OK;
-  uint32_t tempscr[2] = {0, 0};
-
-  /* Set Block Size To 8 Bytes */
-  /* Send CMD55 APP_CMD with argument as card's RCA */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  /* Send CMD55 APP_CMD with argument as card's RCA */
-  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_APP_CMD);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
-  SDIO_DataInitStructure.SDIO_DataLength = 8;
-  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
-  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
-  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
-  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
-  SDIO_DataConfig(&SDIO_DataInitStructure);
-
-
-  /* Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
-  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
-  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_SEND_SCR;
-  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
-  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
-  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
-  SDIO_SendCommand(&SDIO_CmdInitStructure);
-
-  errorstatus = CmdResp1Error(SDIO_SD_APP_SEND_SCR);
-
-  if (errorstatus != SD_OK)
-  {
-    return(errorstatus);
-  }
-
-  while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
-  {
-    if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
-    {
-      *(tempscr + index) = SDIO_ReadData();
-      index++;
-    }
-  }
-
-  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
-    errorstatus = SD_DATA_TIMEOUT;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
-    errorstatus = SD_DATA_CRC_FAIL;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
-    errorstatus = SD_RX_OVERRUN;
-    return(errorstatus);
-  }
-  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
-  {
-    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
-    errorstatus = SD_START_BIT_ERR;
-    return(errorstatus);
-  }
-
-  /* Clear all the static flags */
-  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
-
-  *(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
-
-  *(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
-
-  return(errorstatus);
-}
-
-/**
-  * @brief  Converts the number of bytes in power of two and returns the
-  *   power.
-  * @param  NumberOfBytes: number of bytes.
-  * @retval None
-  */
-static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
-{
-  uint8_t count = 0;
-
-  while (NumberOfBytes != 1)
-  {
-    NumberOfBytes >>= 1;
-    count++;
-  }
-  return(count);
-}
-
-/**
-  * @brief  Configures the SDIO Corresponding GPIO Ports
-  * @param  None
-  * @retval None
-  */
-static void GPIO_Configuration(void)
-{
-  GPIO_InitTypeDef  GPIO_InitStructure;
-
-  /* GPIOC and GPIOD Periph clock enable */
-  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);
-
-  /* Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */
-  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
-  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
-  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
-  GPIO_Init(GPIOC, &GPIO_InitStructure);
-
-  /* Configure PD.02 CMD line */
-  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
-  GPIO_Init(GPIOD, &GPIO_InitStructure);
-}
-
-/**
-  * @brief  Configures the DMA2 Channel4 for SDIO Tx request.
-  * @param  BufferSRC: pointer to the source buffer
-  * @param  BufferSize: buffer size
-  * @retval None
-  */
-static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize)
-{
-  DMA_InitTypeDef DMA_InitStructure;
-
-  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
-
-  /* DMA2 Channel4 disable */
-  DMA_Cmd(DMA2_Channel4, DISABLE);
-
-  /* DMA2 Channel4 Config */
-  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
-  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;
-  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
-  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
-  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
-  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
-  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
-  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
-  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
-  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
-  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
-  DMA_Init(DMA2_Channel4, &DMA_InitStructure);
-
-  /* DMA2 Channel4 enable */
-  DMA_Cmd(DMA2_Channel4, ENABLE);
-}
-
-/**
-  * @brief  Configures the DMA2 Channel4 for SDIO Rx request.
-  * @param  BufferDST: pointer to the destination buffer
-  * @param  BufferSize: buffer size
-  * @retval None
-  */
-static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize)
-{
-  DMA_InitTypeDef DMA_InitStructure;
-
-  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
-
-  /* DMA2 Channel4 disable */
-  DMA_Cmd(DMA2_Channel4, DISABLE);
-
-  /* DMA2 Channel4 Config */
-  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
-  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST;
-  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
-  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
-  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
-  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
-  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
-  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
-  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
-  DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
-  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+
+      /* SEND CMD55 APP_CMD with RCA as 0 */
+      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_SD | SDType;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_OP_COND;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp3Error();
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      response = SDIO_GetResponse(SDIO_RESP1);
+      validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);
+      count++;
+    }
+    if (count >= SD_MAX_VOLT_TRIAL)
+    {
+      errorstatus = SD_INVALID_VOLTRANGE;
+      return(errorstatus);
+    }
+
+    if (response &= SD_HIGH_CAPACITY)
+    {
+      CardType = SDIO_HIGH_CAPACITY_SD_CARD;
+    }
+  }/* else MMC Card */
+  else
+  {
+    CardType = SDIO_MULTIMEDIA_CARD;
+
+    /* Send CMD1 SEND_OP_COND with Argument 0x80FF8000 */
+    while ((!validvoltage) && (count < SD_MAX_VOLT_TRIAL))
+    {
+      /* SEND CMD55 APP_CMD with RCA as 0 */
+      SDIO_CmdInitStructure.SDIO_Argument = SD_VOLTAGE_WINDOW_MMC;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_OP_COND;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp3Error();
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      response = SDIO_GetResponse(SDIO_RESP1);
+      validvoltage = (bool) (((response >> 31) == 1) ? 1 : 0);
+      count++;
+    }
+    if (count >= SD_MAX_VOLT_TRIAL)
+    {
+      errorstatus = SD_INVALID_VOLTRANGE;
+      return(errorstatus);
+    }
+  }
+
+  return(SD_OK);
+}
+
+/**
+  * @brief  Turns the SDIO output signals off.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_PowerOFF(void)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /* Set Power State to OFF */
+  SDIO_SetPowerState(SDIO_PowerState_OFF);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Intialises all cards or single card as the case may be.
+  *   Card(s) come into standby state.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_InitializeCards(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint16_t rca = 0x01;
+
+  if (SDIO_GetPowerState() == SDIO_PowerState_OFF)
+  {
+    errorstatus = SD_REQUEST_NOT_APPLICABLE;
+    return(errorstatus);
+  }
+
+  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
+  {
+    /* Send CMD2 ALL_SEND_CID */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ALL_SEND_CID;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp2Error();
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+
+    CID_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
+    CID_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
+    CID_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
+    CID_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
+  }
+  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) ||  (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) ||  (SDIO_SECURE_DIGITAL_IO_COMBO_CARD == CardType)
+      ||  (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+  {
+    /* Send CMD3 SET_REL_ADDR with argument 0 */
+    /* SD Card publishes its RCA. */
+    SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp6Error(SDIO_SET_REL_ADDR, &rca);
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+  }
+    if (SDIO_MULTIMEDIA_CARD == CardType)
+    {
+        /* Send CMD3 SET_REL_ADDR with argument 0 */
+        /* SD Card publishes its RCA. */
+        SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
+        SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_REL_ADDR;
+        SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+        SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+        SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+        SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+        errorstatus = CmdResp2Error();
+
+        if (SD_OK != errorstatus)
+        {
+            return(errorstatus);
+        }
+    }
+
+  if (SDIO_SECURE_DIGITAL_IO_CARD != CardType)
+  {
+    RCA = rca;
+
+    /* Send CMD9 SEND_CSD with argument as card's RCA */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)(rca << 16);
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_CSD;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Long;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp2Error();
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+
+    CSD_Tab[0] = SDIO_GetResponse(SDIO_RESP1);
+    CSD_Tab[1] = SDIO_GetResponse(SDIO_RESP2);
+    CSD_Tab[2] = SDIO_GetResponse(SDIO_RESP3);
+    CSD_Tab[3] = SDIO_GetResponse(SDIO_RESP4);
+  }
+
+  errorstatus = SD_OK; /* All cards get intialized */
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Returns information about specific card.
+  * @param  cardinfo : pointer to a SD_CardInfo structure
+  *   that contains all SD card information.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo)
+{
+  SD_Error errorstatus = SD_OK;
+  uint8_t tmp = 0;
+
+  cardinfo->CardType = (uint8_t)CardType;
+  cardinfo->RCA = (uint16_t)RCA;
+
+  /* Byte 0 */
+  tmp = (uint8_t)((CSD_Tab[0] & 0xFF000000) >> 24);
+  cardinfo->SD_csd.CSDStruct = (tmp & 0xC0) >> 6;
+  cardinfo->SD_csd.SysSpecVersion = (tmp & 0x3C) >> 2;
+  cardinfo->SD_csd.Reserved1 = tmp & 0x03;
+
+  /* Byte 1 */
+  tmp = (uint8_t)((CSD_Tab[0] & 0x00FF0000) >> 16);
+  cardinfo->SD_csd.TAAC = tmp;
+
+  /* Byte 2 */
+  tmp = (uint8_t)((CSD_Tab[0] & 0x0000FF00) >> 8);
+  cardinfo->SD_csd.NSAC = tmp;
+
+  /* Byte 3 */
+  tmp = (uint8_t)(CSD_Tab[0] & 0x000000FF);
+  cardinfo->SD_csd.MaxBusClkFrec = tmp;
+
+  /* Byte 4 */
+  tmp = (uint8_t)((CSD_Tab[1] & 0xFF000000) >> 24);
+  cardinfo->SD_csd.CardComdClasses = tmp << 4;
+
+  /* Byte 5 */
+  tmp = (uint8_t)((CSD_Tab[1] & 0x00FF0000) >> 16);
+  cardinfo->SD_csd.CardComdClasses |= (tmp & 0xF0) >> 4;
+  cardinfo->SD_csd.RdBlockLen = tmp & 0x0F;
+
+  /* Byte 6 */
+  tmp = (uint8_t)((CSD_Tab[1] & 0x0000FF00) >> 8);
+  cardinfo->SD_csd.PartBlockRead = (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.WrBlockMisalign = (tmp & 0x40) >> 6;
+  cardinfo->SD_csd.RdBlockMisalign = (tmp & 0x20) >> 5;
+  cardinfo->SD_csd.DSRImpl = (tmp & 0x10) >> 4;
+  cardinfo->SD_csd.Reserved2 = 0; /* Reserved */
+
+  if ((CardType == SDIO_STD_CAPACITY_SD_CARD_V1_1) || (CardType == SDIO_STD_CAPACITY_SD_CARD_V2_0))
+  {
+    cardinfo->SD_csd.DeviceSize = (tmp & 0x03) << 10;
+
+    /* Byte 7 */
+    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
+    cardinfo->SD_csd.DeviceSize |= (tmp) << 2;
+
+    /* Byte 8 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
+    cardinfo->SD_csd.DeviceSize |= (tmp & 0xC0) >> 6;
+
+    cardinfo->SD_csd.MaxRdCurrentVDDMin = (tmp & 0x38) >> 3;
+    cardinfo->SD_csd.MaxRdCurrentVDDMax = (tmp & 0x07);
+
+    /* Byte 9 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
+    cardinfo->SD_csd.MaxWrCurrentVDDMin = (tmp & 0xE0) >> 5;
+    cardinfo->SD_csd.MaxWrCurrentVDDMax = (tmp & 0x1C) >> 2;
+    cardinfo->SD_csd.DeviceSizeMul = (tmp & 0x03) << 1;
+    /* Byte 10 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
+    cardinfo->SD_csd.DeviceSizeMul |= (tmp & 0x80) >> 7;
+
+    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) ;
+    cardinfo->CardCapacity *= (1 << (cardinfo->SD_csd.DeviceSizeMul + 2));
+    cardinfo->CardBlockSize = 1 << (cardinfo->SD_csd.RdBlockLen);
+    cardinfo->CardCapacity *= cardinfo->CardBlockSize;
+  }
+  else if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    /* Byte 7 */
+    tmp = (uint8_t)(CSD_Tab[1] & 0x000000FF);
+    cardinfo->SD_csd.DeviceSize = (tmp & 0x3F) << 16;
+
+    /* Byte 8 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0xFF000000) >> 24);
+
+    cardinfo->SD_csd.DeviceSize |= (tmp << 8);
+
+    /* Byte 9 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x00FF0000) >> 16);
+
+    cardinfo->SD_csd.DeviceSize |= (tmp);
+
+    /* Byte 10 */
+    tmp = (uint8_t)((CSD_Tab[2] & 0x0000FF00) >> 8);
+
+    cardinfo->CardCapacity = (cardinfo->SD_csd.DeviceSize + 1) * 512 * 1024;
+    cardinfo->CardBlockSize = 512;
+  }
+
+
+  cardinfo->SD_csd.EraseGrSize = (tmp & 0x40) >> 6;
+  cardinfo->SD_csd.EraseGrMul = (tmp & 0x3F) << 1;
+
+  /* Byte 11 */
+  tmp = (uint8_t)(CSD_Tab[2] & 0x000000FF);
+  cardinfo->SD_csd.EraseGrMul |= (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.WrProtectGrSize = (tmp & 0x7F);
+
+  /* Byte 12 */
+  tmp = (uint8_t)((CSD_Tab[3] & 0xFF000000) >> 24);
+  cardinfo->SD_csd.WrProtectGrEnable = (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.ManDeflECC = (tmp & 0x60) >> 5;
+  cardinfo->SD_csd.WrSpeedFact = (tmp & 0x1C) >> 2;
+  cardinfo->SD_csd.MaxWrBlockLen = (tmp & 0x03) << 2;
+
+  /* Byte 13 */
+  tmp = (uint8_t)((CSD_Tab[3] & 0x00FF0000) >> 16);
+  cardinfo->SD_csd.MaxWrBlockLen |= (tmp & 0xC0) >> 6;
+  cardinfo->SD_csd.WriteBlockPaPartial = (tmp & 0x20) >> 5;
+  cardinfo->SD_csd.Reserved3 = 0;
+  cardinfo->SD_csd.ContentProtectAppli = (tmp & 0x01);
+
+  /* Byte 14 */
+  tmp = (uint8_t)((CSD_Tab[3] & 0x0000FF00) >> 8);
+  cardinfo->SD_csd.FileFormatGrouop = (tmp & 0x80) >> 7;
+  cardinfo->SD_csd.CopyFlag = (tmp & 0x40) >> 6;
+  cardinfo->SD_csd.PermWrProtect = (tmp & 0x20) >> 5;
+  cardinfo->SD_csd.TempWrProtect = (tmp & 0x10) >> 4;
+  cardinfo->SD_csd.FileFormat = (tmp & 0x0C) >> 2;
+  cardinfo->SD_csd.ECC = (tmp & 0x03);
+
+  /* Byte 15 */
+  tmp = (uint8_t)(CSD_Tab[3] & 0x000000FF);
+  cardinfo->SD_csd.CSD_CRC = (tmp & 0xFE) >> 1;
+  cardinfo->SD_csd.Reserved4 = 1;
+
+
+  /* Byte 0 */
+  tmp = (uint8_t)((CID_Tab[0] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ManufacturerID = tmp;
+
+  /* Byte 1 */
+  tmp = (uint8_t)((CID_Tab[0] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.OEM_AppliID = tmp << 8;
+
+  /* Byte 2 */
+  tmp = (uint8_t)((CID_Tab[0] & 0x000000FF00) >> 8);
+  cardinfo->SD_cid.OEM_AppliID |= tmp;
+
+  /* Byte 3 */
+  tmp = (uint8_t)(CID_Tab[0] & 0x000000FF);
+  cardinfo->SD_cid.ProdName1 = tmp << 24;
+
+  /* Byte 4 */
+  tmp = (uint8_t)((CID_Tab[1] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ProdName1 |= tmp << 16;
+
+  /* Byte 5 */
+  tmp = (uint8_t)((CID_Tab[1] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.ProdName1 |= tmp << 8;
+
+  /* Byte 6 */
+  tmp = (uint8_t)((CID_Tab[1] & 0x0000FF00) >> 8);
+  cardinfo->SD_cid.ProdName1 |= tmp;
+
+  /* Byte 7 */
+  tmp = (uint8_t)(CID_Tab[1] & 0x000000FF);
+  cardinfo->SD_cid.ProdName2 = tmp;
+
+  /* Byte 8 */
+  tmp = (uint8_t)((CID_Tab[2] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ProdRev = tmp;
+
+  /* Byte 9 */
+  tmp = (uint8_t)((CID_Tab[2] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.ProdSN = tmp << 24;
+
+  /* Byte 10 */
+  tmp = (uint8_t)((CID_Tab[2] & 0x0000FF00) >> 8);
+  cardinfo->SD_cid.ProdSN |= tmp << 16;
+
+  /* Byte 11 */
+  tmp = (uint8_t)(CID_Tab[2] & 0x000000FF);
+  cardinfo->SD_cid.ProdSN |= tmp << 8;
+
+  /* Byte 12 */
+  tmp = (uint8_t)((CID_Tab[3] & 0xFF000000) >> 24);
+  cardinfo->SD_cid.ProdSN |= tmp;
+
+  /* Byte 13 */
+  tmp = (uint8_t)((CID_Tab[3] & 0x00FF0000) >> 16);
+  cardinfo->SD_cid.Reserved1 |= (tmp & 0xF0) >> 4;
+  cardinfo->SD_cid.ManufactDate = (tmp & 0x0F) << 8;
+
+  /* Byte 14 */
+  tmp = (uint8_t)((CID_Tab[3] & 0x0000FF00) >> 8);
+  cardinfo->SD_cid.ManufactDate |= tmp;
+
+  /* Byte 15 */
+  tmp = (uint8_t)(CID_Tab[3] & 0x000000FF);
+  cardinfo->SD_cid.CID_CRC = (tmp & 0xFE) >> 1;
+  cardinfo->SD_cid.Reserved2 = 1;
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Enables wide bus opeartion for the requeseted card if
+  *   supported by card.
+  * @param  WideMode: Specifies the SD card wide bus mode.
+  *   This parameter can be one of the following values:
+  *     @arg SDIO_BusWide_8b: 8-bit data transfer (Only for MMC)
+  *     @arg SDIO_BusWide_4b: 4-bit data transfer
+  *     @arg SDIO_BusWide_1b: 1-bit data transfer
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_EnableWideBusOperation(uint32_t WideMode)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /* MMC Card doesn't support this feature */
+  if (SDIO_MULTIMEDIA_CARD == CardType)
+  {
+    errorstatus = SD_UNSUPPORTED_FEATURE;
+    return(errorstatus);
+  }
+  else if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+  {
+    if (SDIO_BusWide_8b == WideMode)
+    {
+      errorstatus = SD_UNSUPPORTED_FEATURE;
+      return(errorstatus);
+    }
+    else if (SDIO_BusWide_4b == WideMode)
+    {
+      errorstatus = SDEnWideBus(ENABLE);
+
+      if (SD_OK == errorstatus)
+      {
+        /* Configure the SDIO peripheral */
+        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
+        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_4b;
+        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+        SDIO_Init(&SDIO_InitStructure);
+      }
+    }
+    else
+    {
+      errorstatus = SDEnWideBus(DISABLE);
+
+      if (SD_OK == errorstatus)
+      {
+        /* Configure the SDIO peripheral */
+        SDIO_InitStructure.SDIO_ClockDiv = SDIO_TRANSFER_CLK_DIV;
+        SDIO_InitStructure.SDIO_ClockEdge = SDIO_ClockEdge_Rising;
+        SDIO_InitStructure.SDIO_ClockBypass = SDIO_ClockBypass_Disable;
+        SDIO_InitStructure.SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
+        SDIO_InitStructure.SDIO_BusWide = SDIO_BusWide_1b;
+        SDIO_InitStructure.SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
+        SDIO_Init(&SDIO_InitStructure);
+      }
+    }
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Sets device mode whether to operate in Polling, Interrupt or
+  *   DMA mode.
+  * @param  Mode: Specifies the Data Transfer mode.
+  *   This parameter can be one of the following values:
+  *     @arg SD_DMA_MODE: Data transfer using DMA.
+  *     @arg SD_INTERRUPT_MODE: Data transfer using interrupts.
+  *     @arg SD_POLLING_MODE: Data transfer using flags.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SetDeviceMode(uint32_t Mode)
+{
+  SD_Error errorstatus = SD_OK;
+
+  if ((Mode == SD_DMA_MODE) || (Mode == SD_INTERRUPT_MODE) || (Mode == SD_POLLING_MODE))
+  {
+    DeviceMode = Mode;
+  }
+  else
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+  }
+  return(errorstatus);
+
+}
+
+/**
+  * @brief  Selects od Deselects the corresponding card.
+  * @param  addr: Address of the Card to be selected.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SelectDeselect(uint32_t addr)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /* Send CMD7 SDIO_SEL_DESEL_CARD */
+  SDIO_CmdInitStructure.SDIO_Argument =  addr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEL_DESEL_CARD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_SEL_DESEL_CARD);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to read one block from a specified address in a card.
+  * @param  addr: Address from where data are to be read.
+  * @param  readbuff: pointer to the buffer that will contain the
+  *   received data
+  * @param  BlockSize: the SD card Data block size.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t count = 0, *tempbuff = readbuff;
+  uint8_t power = 0;
+
+  if (NULL == readbuff)
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  TotalNumberOfBytes = 0;
+
+  /* Clear all DPSM configuration */
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 0;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+  SDIO_DMACmd(DISABLE);
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    addr /= 512;
+  }
+  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
+  {
+    power = convert_from_bytes_to_power_of_two(BlockSize);
+
+    /* Set Block Size for Card */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+  }
+  else
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  TotalNumberOfBytes = BlockSize;
+  StopCondition = 0;
+  DestBuffer = readbuff;
+
+  /* Send CMD17 READ_SINGLE_BLOCK */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_SINGLE_BLOCK;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_READ_SINGLE_BLOCK);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+  /* In case of single block transfer, no need of stop transfer at all.*/
+  if (DeviceMode == SD_POLLING_MODE)
+  {
+    /* Polling mode */
+    while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+    {
+      if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+      {
+        for (count = 0; count < 8; count++)
+        {
+          *(tempbuff + count) = SDIO_ReadData();
+        }
+        tempbuff += 8;
+      }
+    }
+
+    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+      errorstatus = SD_DATA_TIMEOUT;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+      errorstatus = SD_DATA_CRC_FAIL;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+      errorstatus = SD_RX_OVERRUN;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+      errorstatus = SD_START_BIT_ERR;
+      return(errorstatus);
+    }
+    while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
+    {
+      *tempbuff = SDIO_ReadData();
+      tempbuff++;
+    }
+
+    /* Clear all the static flags */
+    SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+  }
+  else if (DeviceMode == SD_INTERRUPT_MODE)
+  {
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
+    while ((TransferEnd == 0) && (TransferError == SD_OK))
+    {}
+    if (TransferError != SD_OK)
+    {
+      return(TransferError);
+    }
+  }
+  else if (DeviceMode == SD_DMA_MODE)
+  {
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+    SDIO_DMACmd(ENABLE);
+    DMA_RxConfiguration(readbuff, BlockSize);
+    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+    {}
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to read blocks from a specified address  in a card.
+  * @param  addr: Address from where data are to be read.
+  * @param  readbuff: pointer to the buffer that will contain the
+  *   received data.
+  * @param  BlockSize: the SD card Data block size.
+  * @param  NumberOfBlocks: number of blocks to be read.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t count = 0, *tempbuff = readbuff;
+  uint8_t power = 0;
+
+  if (NULL == readbuff)
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  TotalNumberOfBytes = 0;
+
+  /* Clear all DPSM configuration */
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 0;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+  SDIO_DMACmd(DISABLE);
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    addr /= 512;
+  }
+
+  if ((BlockSize > 0) && (BlockSize <= 2048) && (0 == (BlockSize & (BlockSize - 1))))
+  {
+    power = convert_from_bytes_to_power_of_two(BlockSize);
+
+    /* Set Block Size for Card */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+  }
+  else
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  if (NumberOfBlocks > 1)
+  {
+    /* Common to all modes */
+    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
+    {
+      errorstatus = SD_INVALID_PARAMETER;
+      return(errorstatus);
+    }
+
+    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
+    StopCondition = 1;
+    DestBuffer = readbuff;
+
+    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
+    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
+    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+    SDIO_DataConfig(&SDIO_DataInitStructure);
+
+    /* Send CMD18 READ_MULT_BLOCK with argument data address */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_READ_MULT_BLOCK;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_READ_MULT_BLOCK);
+
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+
+    if (DeviceMode == SD_POLLING_MODE)
+    {
+      /* Polling mode */
+      while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
+      {
+        if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+        {
+          for (count = 0; count < SD_HALFFIFO; count++)
+          {
+            *(tempbuff + count) = SDIO_ReadData();
+          }
+          tempbuff += SD_HALFFIFO;
+        }
+      }
+
+      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+        errorstatus = SD_DATA_TIMEOUT;
+        return(errorstatus);
+      }
+      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+        errorstatus = SD_DATA_CRC_FAIL;
+        return(errorstatus);
+      }
+      else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+        errorstatus = SD_RX_OVERRUN;
+        return(errorstatus);
+      }
+      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+        errorstatus = SD_START_BIT_ERR;
+        return(errorstatus);
+      }
+      while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
+      {
+        *tempbuff = SDIO_ReadData();
+        tempbuff++;
+      }
+
+      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
+      {
+        /* In Case Of SD-CARD Send Command STOP_TRANSMISSION */
+        if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType))
+        {
+          /* Send CMD12 STOP_TRANSMISSION */
+          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
+          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+          SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
+
+          if (errorstatus != SD_OK)
+          {
+            return(errorstatus);
+          }
+        }
+      }
+      /* Clear all the static flags */
+      SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+    }
+    else if (DeviceMode == SD_INTERRUPT_MODE)
+    {
+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_RXFIFOHF | SDIO_IT_STBITERR, ENABLE);
+      while ((TransferEnd == 0) && (TransferError == SD_OK))
+      {}
+      if (TransferError != SD_OK)
+      {
+        return(TransferError);
+      }
+    }
+    else if (DeviceMode == SD_DMA_MODE)
+    {
+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_RXOVERR | SDIO_IT_STBITERR, ENABLE);
+      SDIO_DMACmd(ENABLE);
+      DMA_RxConfiguration(readbuff, (NumberOfBlocks * BlockSize));
+      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+      {}
+      while ((TransferEnd == 0) && (TransferError == SD_OK))
+      {}
+      if (TransferError != SD_OK)
+      {
+        return(TransferError);
+      }
+    }
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to write one block starting from a specified address
+  *   in a card.
+  * @param  addr: Address from where data are to be read.
+  * @param  writebuff: pointer to the buffer that contain the data to be
+  *   transferred.
+  * @param  BlockSize: the SD card Data block size.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize)
+{
+  SD_Error errorstatus = SD_OK;
+  uint8_t  power = 0, cardstate = 0;
+  uint32_t timeout = 0, bytestransferred = 0;
+  uint32_t cardstatus = 0, count = 0, restwords = 0;
+  uint32_t *tempbuff = writebuff;
+
+  if (writebuff == NULL)
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  TotalNumberOfBytes = 0;
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 0;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+  SDIO_DMACmd(DISABLE);
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    addr /= 512;
+  }
+
+  /* Set the block size, both on controller and card */
+  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
+  {
+    power = convert_from_bytes_to_power_of_two(BlockSize);
+
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
+
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+  }
+  else
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  /* Wait till card is ready for data Added */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  cardstatus = SDIO_GetResponse(SDIO_RESP1);
+
+  timeout = SD_DATATIMEOUT;
+
+  while (((cardstatus & 0x00000100) == 0) && (timeout > 0))
+  {
+    timeout--;
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
+
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+    cardstatus = SDIO_GetResponse(SDIO_RESP1);
+  }
+
+  if (timeout == 0)
+  {
+    return(SD_ERROR);
+  }
+
+  /* Send CMD24 WRITE_SINGLE_BLOCK */
+  SDIO_CmdInitStructure.SDIO_Argument = addr;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_SINGLE_BLOCK;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_WRITE_SINGLE_BLOCK);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  TotalNumberOfBytes = BlockSize;
+  StopCondition = 0;
+  SrcBuffer = writebuff;
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = BlockSize;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  /* In case of single data block transfer no need of stop command at all */
+  if (DeviceMode == SD_POLLING_MODE)
+  {
+    while (!(SDIO->STA & (SDIO_FLAG_DBCKEND | SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
+    {
+      if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
+      {
+        if ((TotalNumberOfBytes - bytestransferred) < 32)
+        {
+          restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) : (( TotalNumberOfBytes -  bytestransferred) / 4 + 1);
+
+          for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
+          {
+            SDIO_WriteData(*tempbuff);
+          }
+        }
+        else
+        {
+          for (count = 0; count < 8; count++)
+          {
+            SDIO_WriteData(*(tempbuff + count));
+          }
+          tempbuff += 8;
+          bytestransferred += 32;
+        }
+      }
+    }
+    if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+      errorstatus = SD_DATA_TIMEOUT;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+      errorstatus = SD_DATA_CRC_FAIL;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
+      errorstatus = SD_TX_UNDERRUN;
+      return(errorstatus);
+    }
+    else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+    {
+      SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+      errorstatus = SD_START_BIT_ERR;
+      return(errorstatus);
+    }
+  }
+  else if (DeviceMode == SD_INTERRUPT_MODE)
+  {
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_FLAG_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+    while ((TransferEnd == 0) && (TransferError == SD_OK))
+    {}
+    if (TransferError != SD_OK)
+    {
+      return(TransferError);
+    }
+  }
+  else if (DeviceMode == SD_DMA_MODE)
+  {
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+    DMA_TxConfiguration(writebuff, BlockSize);
+    SDIO_DMACmd(ENABLE);
+    while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+    {}
+    while ((TransferEnd == 0) && (TransferError == SD_OK))
+    {}
+    if (TransferError != SD_OK)
+    {
+      return(TransferError);
+    }
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  /* Wait till the card is in programming state */
+  errorstatus = IsCardProgramming(&cardstate);
+
+  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
+  {
+    errorstatus = IsCardProgramming(&cardstate);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to write blocks starting from a specified address in
+  *   a card.
+  * @param  addr: Address from where data are to be read.
+  * @param  writebuff: pointer to the buffer that contain the data to be
+  *   transferred.
+  * @param  BlockSize: the SD card Data block size.
+  * @param  NumberOfBlocks: number of blocks to be written.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks)
+{
+  SD_Error errorstatus = SD_OK;
+  uint8_t  power = 0, cardstate = 0;
+  uint32_t bytestransferred = 0;
+  uint32_t count = 0, restwords = 0;
+  uint32_t *tempbuff = writebuff;
+
+  if (writebuff == NULL)
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  TransferError = SD_OK;
+  TransferEnd = 0;
+  TotalNumberOfBytes = 0;
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 0;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_1b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Disable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+  SDIO_DMACmd(DISABLE);
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    BlockSize = 512;
+    addr /= 512;
+  }
+
+  /* Set the block size, both on controller and card */
+  if ((BlockSize > 0) && (BlockSize <= 2048) && ((BlockSize & (BlockSize - 1)) == 0))
+  {
+    power = convert_from_bytes_to_power_of_two(BlockSize);
+
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) BlockSize;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
+
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+  }
+  else
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  /* Wait till card is ready for data Added */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  if (NumberOfBlocks > 1)
+  {
+    /* Common to all modes */
+    if (NumberOfBlocks * BlockSize > SD_MAX_DATA_LENGTH)
+    {
+      errorstatus = SD_INVALID_PARAMETER;
+      return(errorstatus);
+    }
+
+    if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+    {
+      /* To improve performance */
+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) (RCA << 16);
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+
+      errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+      /* To improve performance */
+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)NumberOfBlocks;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCK_COUNT;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SDIO_SET_BLOCK_COUNT);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+    }
+
+    /* Send CMD25 WRITE_MULT_BLOCK with argument data address */
+    SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)addr;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_WRITE_MULT_BLOCK;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_WRITE_MULT_BLOCK);
+
+    if (SD_OK != errorstatus)
+    {
+      return(errorstatus);
+    }
+
+    TotalNumberOfBytes = NumberOfBlocks * BlockSize;
+    StopCondition = 1;
+    SrcBuffer = writebuff;
+
+    SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+    SDIO_DataInitStructure.SDIO_DataLength = NumberOfBlocks * BlockSize;
+    SDIO_DataInitStructure.SDIO_DataBlockSize = (uint32_t) power << 4;
+    SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToCard;
+    SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+    SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+    SDIO_DataConfig(&SDIO_DataInitStructure);
+
+    if (DeviceMode == SD_POLLING_MODE)
+    {
+      while (!(SDIO->STA & (SDIO_FLAG_TXUNDERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DATAEND | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_STBITERR)))
+      {
+        if (SDIO_GetFlagStatus(SDIO_FLAG_TXFIFOHE) != RESET)
+        {
+          if (!((TotalNumberOfBytes - bytestransferred) < SD_HALFFIFOBYTES))
+          {
+            for (count = 0; count < SD_HALFFIFO; count++)
+            {
+              SDIO_WriteData(*(tempbuff + count));
+            }
+            tempbuff += SD_HALFFIFO;
+            bytestransferred += SD_HALFFIFOBYTES;
+          }
+          else
+          {
+            restwords = ((TotalNumberOfBytes - bytestransferred) % 4 == 0) ? ((TotalNumberOfBytes - bytestransferred) / 4) :
+                        ((TotalNumberOfBytes - bytestransferred) / 4 + 1);
+
+            for (count = 0; count < restwords; count++, tempbuff++, bytestransferred += 4)
+            {
+              SDIO_WriteData(*tempbuff);
+            }
+          }
+        }
+      }
+
+      if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+        errorstatus = SD_DATA_TIMEOUT;
+        return(errorstatus);
+      }
+      else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+        errorstatus = SD_DATA_CRC_FAIL;
+        return(errorstatus);
+      }
+      else if (SDIO_GetFlagStatus(SDIO_FLAG_TXUNDERR) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_TXUNDERR);
+        errorstatus = SD_TX_UNDERRUN;
+        return(errorstatus);
+      }
+      else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+      {
+        SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+        errorstatus = SD_START_BIT_ERR;
+        return(errorstatus);
+      }
+
+      if (SDIO_GetFlagStatus(SDIO_FLAG_DATAEND) != RESET)
+      {
+       if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+        {
+          /* Send CMD12 STOP_TRANSMISSION */
+          SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+          SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
+          SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+          SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+          SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+          SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+
+          errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
+
+          if (errorstatus != SD_OK)
+          {
+            return(errorstatus);
+          }
+        }
+      }
+    }
+    else if (DeviceMode == SD_INTERRUPT_MODE)
+    {
+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXFIFOHE | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+      while ((TransferEnd == 0) && (TransferError == SD_OK))
+      {}
+      if (TransferError != SD_OK)
+      {
+        return(TransferError);
+      }
+    }
+    else if (DeviceMode == SD_DMA_MODE)
+    {
+      SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND | SDIO_IT_TXUNDERR | SDIO_IT_STBITERR, ENABLE);
+      SDIO_DMACmd(ENABLE);
+      DMA_TxConfiguration(writebuff, (NumberOfBlocks * BlockSize));
+      while (DMA_GetFlagStatus(DMA2_FLAG_TC4) == RESET)
+      {}
+      while ((TransferEnd == 0) && (TransferError == SD_OK))
+      {}
+      if (TransferError != SD_OK)
+      {
+        return(TransferError);
+      }
+    }
+  }
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  /* Wait till the card is in programming state */
+  errorstatus = IsCardProgramming(&cardstate);
+
+  while ((errorstatus == SD_OK) && ((cardstate == SD_CARD_PROGRAMMING) || (cardstate == SD_CARD_RECEIVING)))
+  {
+    errorstatus = IsCardProgramming(&cardstate);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Gets the cuurent data transfer state.
+  * @param  None
+  * @retval SDTransferState: Data Transfer state.
+  *   This value can be:
+  *             - SD_NO_TRANSFER: No data transfer is acting
+  *             - SD_TRANSFER_IN_PROGRESS: Data transfer is acting
+  */
+SDTransferState SD_GetTransferState(void)
+{
+  if (SDIO->STA & (SDIO_FLAG_TXACT | SDIO_FLAG_RXACT))
+  {
+    return(SD_TRANSFER_IN_PROGRESS);
+  }
+  else
+  {
+    return(SD_NO_TRANSFER);
+  }
+}
+
+/**
+  * @brief  Aborts an ongoing data transfer.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_StopTransfer(void)
+{
+  SD_Error errorstatus = SD_OK;
+
+  /* Send CMD12 STOP_TRANSMISSION  */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_STOP_TRANSMISSION;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_STOP_TRANSMISSION);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to erase memory area specified for the given card.
+  * @param  startaddr: the start address.
+  * @param  endaddr: the end address.
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t delay = 0;
+  __IO uint32_t maxdelay = 0;
+  uint8_t cardstate = 0;
+
+  /* Check if the card coomnd class supports erase command */
+  if (((CSD_Tab[1] >> 20) & SD_CCCC_ERASE) == 0)
+  {
+    errorstatus = SD_REQUEST_NOT_APPLICABLE;
+    return(errorstatus);
+  }
+
+  maxdelay = 72000 / ((SDIO->CLKCR & 0xFF) + 2);
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  if (CardType == SDIO_HIGH_CAPACITY_SD_CARD)
+  {
+    startaddr /= 512;
+    endaddr /= 512;
+  }
+
+  /* According to sd-card spec 1.0 ERASE_GROUP_START (CMD32) and erase_group_end(CMD33) */
+  if ((SDIO_STD_CAPACITY_SD_CARD_V1_1 == CardType) || (SDIO_STD_CAPACITY_SD_CARD_V2_0 == CardType) || (SDIO_HIGH_CAPACITY_SD_CARD == CardType))
+  {
+    /* Send CMD32 SD_ERASE_GRP_START with argument as addr  */
+    SDIO_CmdInitStructure.SDIO_Argument = startaddr;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_START;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_START);
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+
+    /* Send CMD33 SD_ERASE_GRP_END with argument as addr  */
+    SDIO_CmdInitStructure.SDIO_Argument = endaddr;
+    SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_ERASE_GRP_END;
+    SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+    SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+    SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+    SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+    errorstatus = CmdResp1Error(SDIO_SD_ERASE_GRP_END);
+    if (errorstatus != SD_OK)
+    {
+      return(errorstatus);
+    }
+  }
+
+  /* Send CMD38 ERASE */
+  SDIO_CmdInitStructure.SDIO_Argument = 0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_ERASE;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_ERASE);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  for (delay = 0; delay < maxdelay; delay++)
+  {}
+
+  /* Wait till the card is in programming state */
+  errorstatus = IsCardProgramming(&cardstate);
+
+  while ((errorstatus == SD_OK) && ((SD_CARD_PROGRAMMING == cardstate) || (SD_CARD_RECEIVING == cardstate)))
+  {
+    errorstatus = IsCardProgramming(&cardstate);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Returns the current card's status.
+  * @param  pcardstatus: pointer to the buffer that will contain the SD
+  *   card status (Card Status register).
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SendStatus(uint32_t *pcardstatus)
+{
+  SD_Error errorstatus = SD_OK;
+
+  if (pcardstatus == NULL)
+  {
+    errorstatus = SD_INVALID_PARAMETER;
+    return(errorstatus);
+  }
+
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+
+  errorstatus = CmdResp1Error(SDIO_SEND_STATUS);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  *pcardstatus = SDIO_GetResponse(SDIO_RESP1);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Returns the current SD card's status.
+  * @param  psdstatus: pointer to the buffer that will contain the SD
+  *   card status (SD Status register).
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_SendSDStatus(uint32_t *psdstatus)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t count = 0;
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  /* Set block size for card if it is not equal to current block size for card. */
+  SDIO_CmdInitStructure.SDIO_Argument = 64;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /* CMD55 */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+  errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 64;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_64b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+  /* Send ACMD13 SD_APP_STAUS  with argument as card's RCA.*/
+  SDIO_CmdInitStructure.SDIO_Argument = 0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_STAUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+  errorstatus = CmdResp1Error(SDIO_SD_APP_STAUS);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  while (!(SDIO->STA &(SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+  {
+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXFIFOHF) != RESET)
+    {
+      for (count = 0; count < 8; count++)
+      {
+        *(psdstatus + count) = SDIO_ReadData();
+      }
+      psdstatus += 8;
+    }
+  }
+
+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+    errorstatus = SD_DATA_TIMEOUT;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+    errorstatus = SD_DATA_CRC_FAIL;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+    errorstatus = SD_RX_OVERRUN;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+    errorstatus = SD_START_BIT_ERR;
+    return(errorstatus);
+  }
+
+  while (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
+  {
+    *psdstatus = SDIO_ReadData();
+    psdstatus++;
+  }
+
+  /* Clear all the static status flags*/
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+  psdstatus -= 16;
+  for (count = 0; count < 16; count++)
+  {
+    psdstatus[count] = ((psdstatus[count] & SD_0TO7BITS) << 24) |((psdstatus[count] & SD_8TO15BITS) << 8) |
+                       ((psdstatus[count] & SD_16TO23BITS) >> 8) |((psdstatus[count] & SD_24TO31BITS) >> 24);
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Allows to process all the interrupts that are high.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+SD_Error SD_ProcessIRQSrc(void)
+{
+  uint32_t count = 0, restwords = 0;
+
+  if (DeviceMode == SD_INTERRUPT_MODE)
+  {
+    if (SDIO_GetITStatus(SDIO_IT_RXFIFOHF) != RESET)
+    {
+      for (count = 0; count < SD_HALFFIFO; count++)
+      {
+        *(DestBuffer + count) = SDIO_ReadData();
+      }
+      DestBuffer += SD_HALFFIFO;
+      NumberOfBytes += SD_HALFFIFOBYTES;
+    }
+    else if (SDIO_GetITStatus(SDIO_IT_TXFIFOHE) != RESET)
+    {
+      if ((TotalNumberOfBytes - NumberOfBytes) < SD_HALFFIFOBYTES)
+      {
+        restwords = ((TotalNumberOfBytes - NumberOfBytes) %  4 == 0) ?
+                    ((TotalNumberOfBytes - NumberOfBytes) / 4) :
+                    ((TotalNumberOfBytes - NumberOfBytes) / 4 + 1);
+
+        for (count = 0; count < restwords;  count++, SrcBuffer++, NumberOfBytes += 4)
+        {
+          SDIO_WriteData(*SrcBuffer);
+        }
+      }
+      else
+      {
+        for (count = 0; count < SD_HALFFIFO; count++)
+        {
+          SDIO_WriteData(*(SrcBuffer + count));
+        }
+
+        SrcBuffer += SD_HALFFIFO;
+        NumberOfBytes += SD_HALFFIFOBYTES;
+      }
+    }
+  }
+
+  if (SDIO_GetITStatus(SDIO_IT_DATAEND) != RESET)
+  {
+    if (DeviceMode != SD_DMA_MODE)
+    {
+      while ((SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)  &&  (NumberOfBytes < TotalNumberOfBytes))
+      {
+        *DestBuffer = SDIO_ReadData();
+        DestBuffer++;
+        NumberOfBytes += 4;
+      }
+    }
+
+    if (StopCondition == 1)
+    {
+      TransferError = SD_StopTransfer();
+    }
+    else
+    {
+      TransferError = SD_OK;
+    }
+    SDIO_ClearITPendingBit(SDIO_IT_DATAEND);
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+    TransferEnd = 1;
+    NumberOfBytes = 0;
+    return(TransferError);
+  }
+
+  if (SDIO_GetITStatus(SDIO_IT_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_DCRCFAIL);
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+    NumberOfBytes = 0;
+    TransferError = SD_DATA_CRC_FAIL;
+    return(SD_DATA_CRC_FAIL);
+  }
+
+  if (SDIO_GetITStatus(SDIO_IT_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_DTIMEOUT);
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+    NumberOfBytes = 0;
+    TransferError = SD_DATA_TIMEOUT;
+    return(SD_DATA_TIMEOUT);
+  }
+
+  if (SDIO_GetITStatus(SDIO_IT_RXOVERR) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_RXOVERR);
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+    NumberOfBytes = 0;
+    TransferError = SD_RX_OVERRUN;
+    return(SD_RX_OVERRUN);
+  }
+
+  if (SDIO_GetITStatus(SDIO_IT_TXUNDERR) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_TXUNDERR);
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+    NumberOfBytes = 0;
+    TransferError = SD_TX_UNDERRUN;
+    return(SD_TX_UNDERRUN);
+  }
+
+  if (SDIO_GetITStatus(SDIO_IT_STBITERR) != RESET)
+  {
+    SDIO_ClearITPendingBit(SDIO_IT_STBITERR);
+    SDIO_ITConfig(SDIO_IT_DCRCFAIL | SDIO_IT_DTIMEOUT | SDIO_IT_DATAEND |
+                  SDIO_IT_TXFIFOHE | SDIO_IT_RXFIFOHF | SDIO_IT_TXUNDERR |
+                  SDIO_IT_RXOVERR | SDIO_IT_STBITERR, DISABLE);
+    NumberOfBytes = 0;
+    TransferError = SD_START_BIT_ERR;
+    return(SD_START_BIT_ERR);
+  }
+
+  return(SD_OK);
+}
+
+/**
+  * @brief  Checks for error conditions for CMD0.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdError(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t timeout;
+
+  timeout = SDIO_CMD0TIMEOUT; /* 10000 */
+
+  while ((timeout > 0) && (SDIO_GetFlagStatus(SDIO_FLAG_CMDSENT) == RESET))
+  {
+    timeout--;
+  }
+
+  if (timeout == 0)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    return(errorstatus);
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R7.
+  *   response.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp7Error(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+  uint32_t timeout = SDIO_CMD0TIMEOUT;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)) && (timeout > 0))
+  {
+    timeout--;
+    status = SDIO->STA;
+  }
+
+  if ((timeout == 0) || (status & SDIO_FLAG_CTIMEOUT))
+  {
+    /* Card is not V2.0 complient or card does not support the set voltage range */
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+
+  if (status & SDIO_FLAG_CMDREND)
+  {
+    /* Card is SD V2.0 compliant */
+    errorstatus = SD_OK;
+    SDIO_ClearFlag(SDIO_FLAG_CMDREND);
+    return(errorstatus);
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R1.
+  *   response
+  * @param  cmd: The sent command index.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp1Error(uint8_t cmd)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+  uint32_t response_r1;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  /* Check response received is of desired command */
+  if (SDIO_GetCommandResponse() != cmd)
+  {
+    errorstatus = SD_ILLEGAL_CMD;
+    return(errorstatus);
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  /* We have received response, retrieve it for analysis  */
+  response_r1 = SDIO_GetResponse(SDIO_RESP1);
+
+  if ((response_r1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
+  {
+    return(errorstatus);
+  }
+
+  if (response_r1 & SD_OCR_ADDR_OUT_OF_RANGE)
+  {
+    return(SD_ADDR_OUT_OF_RANGE);
+  }
+
+  if (response_r1 & SD_OCR_ADDR_MISALIGNED)
+  {
+    return(SD_ADDR_MISALIGNED);
+  }
+
+  if (response_r1 & SD_OCR_BLOCK_LEN_ERR)
+  {
+    return(SD_BLOCK_LEN_ERR);
+  }
+
+  if (response_r1 & SD_OCR_ERASE_SEQ_ERR)
+  {
+    return(SD_ERASE_SEQ_ERR);
+  }
+
+  if (response_r1 & SD_OCR_BAD_ERASE_PARAM)
+  {
+    return(SD_BAD_ERASE_PARAM);
+  }
+
+  if (response_r1 & SD_OCR_WRITE_PROT_VIOLATION)
+  {
+    return(SD_WRITE_PROT_VIOLATION);
+  }
+
+  if (response_r1 & SD_OCR_LOCK_UNLOCK_FAILED)
+  {
+    return(SD_LOCK_UNLOCK_FAILED);
+  }
+
+  if (response_r1 & SD_OCR_COM_CRC_FAILED)
+  {
+    return(SD_COM_CRC_FAILED);
+  }
+
+  if (response_r1 & SD_OCR_ILLEGAL_CMD)
+  {
+    return(SD_ILLEGAL_CMD);
+  }
+
+  if (response_r1 & SD_OCR_CARD_ECC_FAILED)
+  {
+    return(SD_CARD_ECC_FAILED);
+  }
+
+  if (response_r1 & SD_OCR_CC_ERROR)
+  {
+    return(SD_CC_ERROR);
+  }
+
+  if (response_r1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
+  {
+    return(SD_GENERAL_UNKNOWN_ERROR);
+  }
+
+  if (response_r1 & SD_OCR_STREAM_READ_UNDERRUN)
+  {
+    return(SD_STREAM_READ_UNDERRUN);
+  }
+
+  if (response_r1 & SD_OCR_STREAM_WRITE_OVERRUN)
+  {
+    return(SD_STREAM_WRITE_OVERRUN);
+  }
+
+  if (response_r1 & SD_OCR_CID_CSD_OVERWRIETE)
+  {
+    return(SD_CID_CSD_OVERWRITE);
+  }
+
+  if (response_r1 & SD_OCR_WP_ERASE_SKIP)
+  {
+    return(SD_WP_ERASE_SKIP);
+  }
+
+  if (response_r1 & SD_OCR_CARD_ECC_DISABLED)
+  {
+    return(SD_CARD_ECC_DISABLED);
+  }
+
+  if (response_r1 & SD_OCR_ERASE_RESET)
+  {
+    return(SD_ERASE_RESET);
+  }
+
+  if (response_r1 & SD_OCR_AKE_SEQ_ERROR)
+  {
+    return(SD_AKE_SEQ_ERROR);
+  }
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R3 (OCR).
+  *   response.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp3Error(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R2 (CID or CSD).
+  *   response.
+  * @param  None
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp2Error(void)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Checks for error conditions for R6 (RCA).
+  *   response.
+  * @param  cmd: The sent command index.
+  * @param  prca: pointer to the variable that will contain the SD
+  *   card relative address RCA.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error CmdResp6Error(uint8_t cmd, uint16_t *prca)
+{
+  SD_Error errorstatus = SD_OK;
+  uint32_t status;
+  uint32_t response_r1;
+
+  status = SDIO->STA;
+
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CTIMEOUT | SDIO_FLAG_CMDREND)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  /* Check response received is of desired command */
+  if (SDIO_GetCommandResponse() != cmd)
+  {
+    errorstatus = SD_ILLEGAL_CMD;
+    return(errorstatus);
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  /* We have received response, retrieve it.  */
+  response_r1 = SDIO_GetResponse(SDIO_RESP1);
+
+  if (SD_ALLZERO == (response_r1 & (SD_R6_GENERAL_UNKNOWN_ERROR | SD_R6_ILLEGAL_CMD | SD_R6_COM_CRC_FAILED)))
+  {
+    *prca = (uint16_t) (response_r1 >> 16);
+    return(errorstatus);
+  }
+
+  if (response_r1 & SD_R6_GENERAL_UNKNOWN_ERROR)
+  {
+    return(SD_GENERAL_UNKNOWN_ERROR);
+  }
+
+  if (response_r1 & SD_R6_ILLEGAL_CMD)
+  {
+    return(SD_ILLEGAL_CMD);
+  }
+
+  if (response_r1 & SD_R6_COM_CRC_FAILED)
+  {
+    return(SD_COM_CRC_FAILED);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Enables or disables the SDIO wide bus mode.
+  * @param  NewState: new state of the SDIO wide bus mode.
+  *   This parameter can be: ENABLE or DISABLE.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error SDEnWideBus(FunctionalState NewState)
+{
+  SD_Error errorstatus = SD_OK;
+
+  uint32_t scr[2] = {0, 0};
+
+  if (SDIO_GetResponse(SDIO_RESP1) & SD_CARD_LOCKED)
+  {
+    errorstatus = SD_LOCK_UNLOCK_FAILED;
+    return(errorstatus);
+  }
+
+  /* Get SCR Register */
+  errorstatus = FindSCR(RCA, scr);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /* If wide bus operation to be enabled */
+  if (NewState == ENABLE)
+  {
+    /* If requested card supports wide bus operation */
+    if ((scr[1] & SD_WIDE_BUS_SUPPORT) != SD_ALLZERO)
+    {
+      /* Send CMD55 APP_CMD with argument as card's RCA.*/
+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
+      SDIO_CmdInitStructure.SDIO_Argument = 0x2;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+      return(errorstatus);
+    }
+    else
+    {
+      errorstatus = SD_REQUEST_NOT_APPLICABLE;
+      return(errorstatus);
+    }
+  }   /* If wide bus operation to be disabled */
+  else
+  {
+    /* If requested card supports 1 bit mode operation */
+    if ((scr[1] & SD_SINGLE_BUS_SUPPORT) != SD_ALLZERO)
+    {
+      /* Send CMD55 APP_CMD with argument as card's RCA.*/
+      SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+
+      errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      /* Send ACMD6 APP_CMD with argument as 2 for wide bus mode */
+      SDIO_CmdInitStructure.SDIO_Argument = 0x00;
+      SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_SD_SET_BUSWIDTH;
+      SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+      SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+      SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+      SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+      errorstatus = CmdResp1Error(SDIO_APP_SD_SET_BUSWIDTH);
+
+      if (errorstatus != SD_OK)
+      {
+        return(errorstatus);
+      }
+
+      return(errorstatus);
+    }
+    else
+    {
+      errorstatus = SD_REQUEST_NOT_APPLICABLE;
+      return(errorstatus);
+    }
+  }
+}
+
+/**
+  * @brief  Checks if the SD card is in programming state.
+  * @param  pstatus: pointer to the variable that will contain the SD
+  *   card state.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error IsCardProgramming(uint8_t *pstatus)
+{
+  SD_Error errorstatus = SD_OK;
+  __IO uint32_t respR1 = 0, status = 0;
+
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SEND_STATUS;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  status = SDIO->STA;
+  while (!(status & (SDIO_FLAG_CCRCFAIL | SDIO_FLAG_CMDREND | SDIO_FLAG_CTIMEOUT)))
+  {
+    status = SDIO->STA;
+  }
+
+  if (status & SDIO_FLAG_CTIMEOUT)
+  {
+    errorstatus = SD_CMD_RSP_TIMEOUT;
+    SDIO_ClearFlag(SDIO_FLAG_CTIMEOUT);
+    return(errorstatus);
+  }
+  else if (status & SDIO_FLAG_CCRCFAIL)
+  {
+    errorstatus = SD_CMD_CRC_FAIL;
+    SDIO_ClearFlag(SDIO_FLAG_CCRCFAIL);
+    return(errorstatus);
+  }
+
+  status = (uint32_t)SDIO_GetCommandResponse();
+
+  /* Check response received is of desired command */
+  if (status != SDIO_SEND_STATUS)
+  {
+    errorstatus = SD_ILLEGAL_CMD;
+    return(errorstatus);
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+
+  /* We have received response, retrieve it for analysis  */
+  respR1 = SDIO_GetResponse(SDIO_RESP1);
+
+  /* Find out card status */
+  *pstatus = (uint8_t) ((respR1 >> 9) & 0x0000000F);
+
+  if ((respR1 & SD_OCR_ERRORBITS) == SD_ALLZERO)
+  {
+    return(errorstatus);
+  }
+
+  if (respR1 & SD_OCR_ADDR_OUT_OF_RANGE)
+  {
+    return(SD_ADDR_OUT_OF_RANGE);
+  }
+
+  if (respR1 & SD_OCR_ADDR_MISALIGNED)
+  {
+    return(SD_ADDR_MISALIGNED);
+  }
+
+  if (respR1 & SD_OCR_BLOCK_LEN_ERR)
+  {
+    return(SD_BLOCK_LEN_ERR);
+  }
+
+  if (respR1 & SD_OCR_ERASE_SEQ_ERR)
+  {
+    return(SD_ERASE_SEQ_ERR);
+  }
+
+  if (respR1 & SD_OCR_BAD_ERASE_PARAM)
+  {
+    return(SD_BAD_ERASE_PARAM);
+  }
+
+  if (respR1 & SD_OCR_WRITE_PROT_VIOLATION)
+  {
+    return(SD_WRITE_PROT_VIOLATION);
+  }
+
+  if (respR1 & SD_OCR_LOCK_UNLOCK_FAILED)
+  {
+    return(SD_LOCK_UNLOCK_FAILED);
+  }
+
+  if (respR1 & SD_OCR_COM_CRC_FAILED)
+  {
+    return(SD_COM_CRC_FAILED);
+  }
+
+  if (respR1 & SD_OCR_ILLEGAL_CMD)
+  {
+    return(SD_ILLEGAL_CMD);
+  }
+
+  if (respR1 & SD_OCR_CARD_ECC_FAILED)
+  {
+    return(SD_CARD_ECC_FAILED);
+  }
+
+  if (respR1 & SD_OCR_CC_ERROR)
+  {
+    return(SD_CC_ERROR);
+  }
+
+  if (respR1 & SD_OCR_GENERAL_UNKNOWN_ERROR)
+  {
+    return(SD_GENERAL_UNKNOWN_ERROR);
+  }
+
+  if (respR1 & SD_OCR_STREAM_READ_UNDERRUN)
+  {
+    return(SD_STREAM_READ_UNDERRUN);
+  }
+
+  if (respR1 & SD_OCR_STREAM_WRITE_OVERRUN)
+  {
+    return(SD_STREAM_WRITE_OVERRUN);
+  }
+
+  if (respR1 & SD_OCR_CID_CSD_OVERWRIETE)
+  {
+    return(SD_CID_CSD_OVERWRITE);
+  }
+
+  if (respR1 & SD_OCR_WP_ERASE_SKIP)
+  {
+    return(SD_WP_ERASE_SKIP);
+  }
+
+  if (respR1 & SD_OCR_CARD_ECC_DISABLED)
+  {
+    return(SD_CARD_ECC_DISABLED);
+  }
+
+  if (respR1 & SD_OCR_ERASE_RESET)
+  {
+    return(SD_ERASE_RESET);
+  }
+
+  if (respR1 & SD_OCR_AKE_SEQ_ERROR)
+  {
+    return(SD_AKE_SEQ_ERROR);
+  }
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Find the SD card SCR register value.
+  * @param  rca: selected card address.
+  * @param  pscr: pointer to the buffer that will contain the SCR value.
+  * @retval SD_Error: SD Card Error code.
+  */
+static SD_Error FindSCR(uint16_t rca, uint32_t *pscr)
+{
+  uint32_t index = 0;
+  SD_Error errorstatus = SD_OK;
+  uint32_t tempscr[2] = {0, 0};
+
+  /* Set Block Size To 8 Bytes */
+  /* Send CMD55 APP_CMD with argument as card's RCA */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t)8;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SET_BLOCKLEN;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_SET_BLOCKLEN);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  /* Send CMD55 APP_CMD with argument as card's RCA */
+  SDIO_CmdInitStructure.SDIO_Argument = (uint32_t) RCA << 16;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_APP_CMD;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_APP_CMD);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+  SDIO_DataInitStructure.SDIO_DataTimeOut = SD_DATATIMEOUT;
+  SDIO_DataInitStructure.SDIO_DataLength = 8;
+  SDIO_DataInitStructure.SDIO_DataBlockSize = SDIO_DataBlockSize_8b;
+  SDIO_DataInitStructure.SDIO_TransferDir = SDIO_TransferDir_ToSDIO;
+  SDIO_DataInitStructure.SDIO_TransferMode = SDIO_TransferMode_Block;
+  SDIO_DataInitStructure.SDIO_DPSM = SDIO_DPSM_Enable;
+  SDIO_DataConfig(&SDIO_DataInitStructure);
+
+
+  /* Send ACMD51 SD_APP_SEND_SCR with argument as 0 */
+  SDIO_CmdInitStructure.SDIO_Argument = 0x0;
+  SDIO_CmdInitStructure.SDIO_CmdIndex = SDIO_SD_APP_SEND_SCR;
+  SDIO_CmdInitStructure.SDIO_Response = SDIO_Response_Short;
+  SDIO_CmdInitStructure.SDIO_Wait = SDIO_Wait_No;
+  SDIO_CmdInitStructure.SDIO_CPSM = SDIO_CPSM_Enable;
+  SDIO_SendCommand(&SDIO_CmdInitStructure);
+
+  errorstatus = CmdResp1Error(SDIO_SD_APP_SEND_SCR);
+
+  if (errorstatus != SD_OK)
+  {
+    return(errorstatus);
+  }
+
+  while (!(SDIO->STA & (SDIO_FLAG_RXOVERR | SDIO_FLAG_DCRCFAIL | SDIO_FLAG_DTIMEOUT | SDIO_FLAG_DBCKEND | SDIO_FLAG_STBITERR)))
+  {
+    if (SDIO_GetFlagStatus(SDIO_FLAG_RXDAVL) != RESET)
+    {
+      *(tempscr + index) = SDIO_ReadData();
+      index++;
+    }
+  }
+
+  if (SDIO_GetFlagStatus(SDIO_FLAG_DTIMEOUT) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DTIMEOUT);
+    errorstatus = SD_DATA_TIMEOUT;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_DCRCFAIL) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_DCRCFAIL);
+    errorstatus = SD_DATA_CRC_FAIL;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_RXOVERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_RXOVERR);
+    errorstatus = SD_RX_OVERRUN;
+    return(errorstatus);
+  }
+  else if (SDIO_GetFlagStatus(SDIO_FLAG_STBITERR) != RESET)
+  {
+    SDIO_ClearFlag(SDIO_FLAG_STBITERR);
+    errorstatus = SD_START_BIT_ERR;
+    return(errorstatus);
+  }
+
+  /* Clear all the static flags */
+  SDIO_ClearFlag(SDIO_STATIC_FLAGS);
+
+  *(pscr + 1) = ((tempscr[0] & SD_0TO7BITS) << 24) | ((tempscr[0] & SD_8TO15BITS) << 8) | ((tempscr[0] & SD_16TO23BITS) >> 8) | ((tempscr[0] & SD_24TO31BITS) >> 24);
+
+  *(pscr) = ((tempscr[1] & SD_0TO7BITS) << 24) | ((tempscr[1] & SD_8TO15BITS) << 8) | ((tempscr[1] & SD_16TO23BITS) >> 8) | ((tempscr[1] & SD_24TO31BITS) >> 24);
+
+  return(errorstatus);
+}
+
+/**
+  * @brief  Converts the number of bytes in power of two and returns the
+  *   power.
+  * @param  NumberOfBytes: number of bytes.
+  * @retval None
+  */
+static uint8_t convert_from_bytes_to_power_of_two(uint16_t NumberOfBytes)
+{
+  uint8_t count = 0;
+
+  while (NumberOfBytes != 1)
+  {
+    NumberOfBytes >>= 1;
+    count++;
+  }
+  return(count);
+}
+
+/**
+  * @brief  Configures the SDIO Corresponding GPIO Ports
+  * @param  None
+  * @retval None
+  */
+static void GPIO_Configuration(void)
+{
+  GPIO_InitTypeDef  GPIO_InitStructure;
+
+  /* GPIOC and GPIOD Periph clock enable */
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);
+
+  /* Configure PC.08, PC.09, PC.10, PC.11, PC.12 pin: D0, D1, D2, D3, CLK pin */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
+  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
+  GPIO_Init(GPIOC, &GPIO_InitStructure);
+
+  /* Configure PD.02 CMD line */
+  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
+  GPIO_Init(GPIOD, &GPIO_InitStructure);
+}
+
+/**
+  * @brief  Configures the DMA2 Channel4 for SDIO Tx request.
+  * @param  BufferSRC: pointer to the source buffer
+  * @param  BufferSize: buffer size
+  * @retval None
+  */
+static void DMA_TxConfiguration(uint32_t *BufferSRC, uint32_t BufferSize)
+{
+  DMA_InitTypeDef DMA_InitStructure;
+
+  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
+
+  /* DMA2 Channel4 disable */
+  DMA_Cmd(DMA2_Channel4, DISABLE);
+
+  /* DMA2 Channel4 Config */
+  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
+  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferSRC;
+  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
+  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
+  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
+  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
   DMA_Init(DMA2_Channel4, &DMA_InitStructure);
-
-  /* DMA2 Channel4 enable */
-  DMA_Cmd(DMA2_Channel4, ENABLE);
-}
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
-
-/*
- * RT-Thread SD Card Driver
- * 20090417 Bernard
- */
-#include <rtthread.h>
-#include <dfs_fs.h>
-
-static struct rt_device sdcard_device;
-static SD_CardInfo SDCardInfo;
-static struct dfs_partition part;
-static struct rt_semaphore sd_lock;
-
-/* RT-Thread Device Driver Interface */
-static rt_err_t rt_sdcard_init(rt_device_t dev)
-{
-	NVIC_InitTypeDef NVIC_InitStructure;
-
-	NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
-	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
-	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
-	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
+
+  /* DMA2 Channel4 enable */
+  DMA_Cmd(DMA2_Channel4, ENABLE);
+}
+
+/**
+  * @brief  Configures the DMA2 Channel4 for SDIO Rx request.
+  * @param  BufferDST: pointer to the destination buffer
+  * @param  BufferSize: buffer size
+  * @retval None
+  */
+static void DMA_RxConfiguration(uint32_t *BufferDST, uint32_t BufferSize)
+{
+  DMA_InitTypeDef DMA_InitStructure;
+
+  DMA_ClearFlag(DMA2_FLAG_TC4 | DMA2_FLAG_TE4 | DMA2_FLAG_HT4 | DMA2_FLAG_GL4);
+
+  /* DMA2 Channel4 disable */
+  DMA_Cmd(DMA2_Channel4, DISABLE);
+
+  /* DMA2 Channel4 Config */
+  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)SDIO_FIFO_Address;
+  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)BufferDST;
+  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
+  DMA_InitStructure.DMA_BufferSize = BufferSize / 4;
+  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
+  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
+  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
+  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Word;
+  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
+  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
+  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
+  DMA_Init(DMA2_Channel4, &DMA_InitStructure);
+
+  /* DMA2 Channel4 enable */
+  DMA_Cmd(DMA2_Channel4, ENABLE);
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
+
+/*
+ * RT-Thread SD Card Driver
+ * 20090417 Bernard
+ */
+#include <rtthread.h>
+#include <dfs_fs.h>
+
+/* set sector size to 512 */
+#define SECTOR_SIZE		512
+
+static struct rt_device sdcard_device;
+static SD_CardInfo SDCardInfo;
+static struct dfs_partition part;
+static struct rt_semaphore sd_lock;
+static rt_uint8_t _sdcard_buffer[SECTOR_SIZE];
+
+/* RT-Thread Device Driver Interface */
+static rt_err_t rt_sdcard_init(rt_device_t dev)
+{
+	NVIC_InitTypeDef NVIC_InitStructure;
+
+	NVIC_InitStructure.NVIC_IRQChannel = SDIO_IRQn;
+	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
+	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
+	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
 	NVIC_Init(&NVIC_InitStructure);
-
-	if (rt_sem_init(&sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
-	{
-		rt_kprintf("init sd lock semaphore failed\n");
-	}
-
-	return RT_EOK;
-}
-
-static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
-{
-
-	return RT_EOK;
-}
-
-static rt_err_t rt_sdcard_close(rt_device_t dev)
-{
-	return RT_EOK;
-}
-
-/* set sector size to 512 */
-#define SECTOR_SIZE		512
-static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
-{
-	SD_Error status;
-	rt_uint32_t i, retry;
-
-	// rt_kprintf("read: 0x%x, size %d\n", pos, size);
-
-	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
-	retry = 3;
+
+	if (rt_sem_init(&sd_lock, "sdlock", 1, RT_IPC_FLAG_FIFO) != RT_EOK)
+	{
+		rt_kprintf("init sd lock semaphore failed\n");
+	}
+
+	return RT_EOK;
+}
+
+static rt_err_t rt_sdcard_open(rt_device_t dev, rt_uint16_t oflag)
+{
+	return RT_EOK;
+}
+
+static rt_err_t rt_sdcard_close(rt_device_t dev)
+{
+	return RT_EOK;
+}
+
+static rt_size_t rt_sdcard_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
+{
+	SD_Error status;
+	rt_uint32_t nr = size / SECTOR_SIZE;
+
+	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
+
 	/* read all sectors */
-	for (i = 0; i < size / SECTOR_SIZE; i ++)
-	{
-__retry:
-		status = SD_ReadBlock((part.offset + i)* SECTOR_SIZE + pos,
-			(uint32_t*)((rt_uint8_t*)buffer + i * SECTOR_SIZE),
-			SECTOR_SIZE);
-		if (status != SD_OK)
+	if (((rt_uint32_t)buffer % 4 != 0) ||
+        ((rt_uint32_t)buffer > 0x20080000))
+	{
+	    rt_uint32_t index;
+
+        /* which is not alignment with 4 or chip SRAM */
+        for (index = 0; index < nr; index ++)
+        {
+            status = SD_ReadBlock((part.offset + index) * SECTOR_SIZE + pos,
+                (uint32_t*)_sdcard_buffer, SECTOR_SIZE);
+
+            if (status != SD_OK) break;
+
+            /* copy to the buffer */
+            rt_memcpy(((rt_uint8_t*)buffer + index * SECTOR_SIZE), _sdcard_buffer, SECTOR_SIZE);
+        }
+	}
+	else
+	{
+        if (nr == 1)
+        {
+            status = SD_ReadBlock(part.offset * SECTOR_SIZE + pos,
+                (uint32_t*)buffer, SECTOR_SIZE);
+        }
+        else
+        {
+            status = SD_ReadMultiBlocks(part.offset * SECTOR_SIZE + pos,
+                (uint32_t*)buffer, SECTOR_SIZE, nr);
+        }
+	}
+
+	rt_sem_release(&sd_lock);
+
+	if (status == SD_OK) return size;
+
+	rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
+	return 0;
+}
+
+static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
+{
+	SD_Error status;
+	rt_uint32_t nr = size / SECTOR_SIZE;
+
+	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
+
+	/* read all sectors */
+	if (((rt_uint32_t)buffer % 4 != 0) ||
+        ((rt_uint32_t)buffer > 0x20080000))
+	{
+	    rt_uint32_t index;
+
+        /* which is not alignment with 4 or chip SRAM */
+        for (index = 0; index < nr; index ++)
+        {
+            /* copy to the buffer */
+            rt_memcpy(_sdcard_buffer, ((rt_uint8_t*)buffer + index * SECTOR_SIZE), SECTOR_SIZE);
+
+            status = SD_WriteBlock((part.offset + index) * SECTOR_SIZE + pos,
+                (uint32_t*)_sdcard_buffer, SECTOR_SIZE);
+
+            if (status != SD_OK) break;
+        }
+	}
+	else
+	{
+        if (nr == 1)
+        {
+            status = SD_WriteBlock(part.offset * SECTOR_SIZE + pos,
+                (uint32_t*)buffer, SECTOR_SIZE);
+        }
+        else
+        {
+            status = SD_WriteMultiBlocks(part.offset * SECTOR_SIZE + pos,
+                (uint32_t*)buffer, SECTOR_SIZE, nr);
+        }
+	}
+
+	rt_sem_release(&sd_lock);
+
+	if (status == SD_OK) return size;
+
+	rt_kprintf("write failed: %d, buffer 0x%08x\n", status, buffer);
+	return 0;
+}
+
+static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)
+{
+	return RT_EOK;
+}
+
+void rt_hw_sdcard_init()
+{
+    if (SD_Init() == SD_OK)
+	{
+		SD_Error status;
+		rt_uint8_t *sector;
+
+		status = SD_GetCardInfo(&SDCardInfo);
+		if (status != SD_OK) goto __return;
+
+		status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
+		if (status != SD_OK) goto __return;
+
+		SD_EnableWideBusOperation(SDIO_BusWide_4b);
+		SD_SetDeviceMode(SD_DMA_MODE);
+
+		/* get the first sector to read partition table */
+		sector = (rt_uint8_t*) rt_malloc (512);
+		if (sector == RT_NULL)
+		{
+			rt_kprintf("allocate partition sector buffer failed\n");
+			return;
+		}
+		status = SD_ReadBlock(0, (uint32_t*)sector, 512);
+		if (status == SD_OK)
 		{
-			-- retry;
-			if (retry != 0) goto __retry;
-			else break;
-		}
-	}
-
-	rt_sem_release(&sd_lock);
-
-	if (status == SD_OK) return size;
-
-	rt_kprintf("read failed: %d, buffer 0x%08x\n", status, buffer);
-	return 0;
-}
-
-static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
-{
-	SD_Error status;
-	rt_uint32_t i;
-
-	// rt_kprintf("write: 0x%x, size %d\n", pos, size);
-
-	rt_sem_take(&sd_lock, RT_WAITING_FOREVER);
-
-	/* write all sectors */
-	for (i = 0; i < size / SECTOR_SIZE; i ++)
-	{
-		status = SD_WriteBlock((part.offset + i)* SECTOR_SIZE + pos,
-			(uint32_t*)((rt_uint8_t*)buffer + i * SECTOR_SIZE),
-			SECTOR_SIZE);
-		if (status != SD_OK)
-		{
-			rt_kprintf("sd card write failed\n");
-			break;
-		}
-	}
-
-	rt_sem_release(&sd_lock);
-	if (status == SD_OK) return size;
-
-	rt_kprintf("write failed: %d, buffer 0x%08x\n", status, buffer);
-	return 0;
-}
-
-static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)
-{
-	return RT_EOK;
-}
-
-void rt_hw_sdcard_init()
-{
-    if ( SD_Init() == SD_OK )
-	{
-		SD_Error status;
-		rt_uint8_t *sector;
-
-		SD_EnableWideBusOperation(SDIO_BusWide_1b);
-
-		status = SD_GetCardInfo(&SDCardInfo);
-		if (status != SD_OK) goto __return;
-
-		status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
-		if (status != SD_OK) goto __return;
-
-		SD_SetDeviceMode(SD_DMA_MODE);
-
-		/* get the first sector to read partition table */
-		sector = (rt_uint8_t*) rt_malloc (512);
-		if (sector == RT_NULL)
-		{
-			rt_kprintf("allocate partition sector buffer failed\n");
-			return;
-		}
-		status = SD_ReadBlock(0, (uint32_t*)sector, 512);
-		if (status == SD_OK)
-		{
-			/* get the first partition */
-			if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
-            {
-                /* there is no partition */
-                part.offset = 0;
-                part.size   = 0;
-            }
-		}
-		else
-		{
-			/* there is no partition table */
-			part.offset = 0;
-			part.size   = 0;
-		}
-
-		/* release sector buffer */
-		rt_free(sector);
-
-		/* register sdcard device */
-		sdcard_device.init 	= rt_sdcard_init;
-		sdcard_device.open 	= rt_sdcard_open;
-		sdcard_device.close = rt_sdcard_close;
-		sdcard_device.read 	= rt_sdcard_read;
-		sdcard_device.write = rt_sdcard_write;
-		sdcard_device.control = rt_sdcard_control;
-
-		/* no private */
-		sdcard_device.private = &SDCardInfo;
-
-		rt_device_register(&sdcard_device, "sd0",
-			RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
-
-		return;
-	}
-
-__return:
-	rt_kprintf("sdcard init failed\n");
-}
+			/* get the first partition */
+			if (dfs_filesystem_get_partition(&part, sector, 0) != 0)
+            {
+                /* there is no partition */
+                part.offset = 0;
+                part.size   = 0;
+            }
+		}
+		else
+		{
+			/* there is no partition table */
+			part.offset = 0;
+			part.size   = 0;
+		}
+
+		/* release sector buffer */
+		rt_free(sector);
+
+		/* register sdcard device */
+		sdcard_device.init 	= rt_sdcard_init;
+		sdcard_device.open 	= rt_sdcard_open;
+		sdcard_device.close = rt_sdcard_close;
+		sdcard_device.read 	= rt_sdcard_read;
+		sdcard_device.write = rt_sdcard_write;
+		sdcard_device.control = rt_sdcard_control;
+
+		/* no private */
+		sdcard_device.private = &SDCardInfo;
+
+		rt_device_register(&sdcard_device, "sd0",
+			RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_REMOVABLE | RT_DEVICE_FLAG_STANDALONE);
+
+		return;
+	}
+
+__return:
+	rt_kprintf("sdcard init failed\n");
+}
diff --git a/bsp/stm32_radio/sdcard.h b/bsp/stm32_radio/sdcard.h
index 386c12d965..fd89d94afb 100644
--- a/bsp/stm32_radio/sdcard.h
+++ b/bsp/stm32_radio/sdcard.h
@@ -1,285 +1,285 @@
-/**
-  ******************************************************************************
-  * @file    SDIO/sdcard.h 
-  * @author  MCD Application Team
-  * @version V3.1.0
-  * @date    06/19/2009
-  * @brief   This file contains all the functions prototypes for the SD Card 
-  *          driver firmware library.
-  ******************************************************************************
-  * @copy
-  *
-  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
-  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
-  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
-  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
-  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
-  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
-  *
-  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
-  */ 
-
-/** @addtogroup STM32F10x_StdPeriph_Examples
-  * @{
-  */
-
-/** @addtogroup SDIO_Example
-  * @{
-  */ 
-
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __SDCARD_H
-#define __SDCARD_H
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f10x.h"
-
-/* Exported types ------------------------------------------------------------*/
-typedef enum
-{
-  /* SDIO specific error defines */
-  SD_CMD_CRC_FAIL                    = (1), /* Command response received (but CRC check failed) */
-  SD_DATA_CRC_FAIL                   = (2), /* Data bock sent/received (CRC check Failed) */
-  SD_CMD_RSP_TIMEOUT                 = (3), /* Command response timeout */
-  SD_DATA_TIMEOUT                    = (4), /* Data time out */
-  SD_TX_UNDERRUN                     = (5), /* Transmit FIFO under-run */
-  SD_RX_OVERRUN                      = (6), /* Receive FIFO over-run */
-  SD_START_BIT_ERR                   = (7), /* Start bit not detected on all data signals in widE bus mode */
-  SD_CMD_OUT_OF_RANGE                = (8), /* CMD's argument was out of range.*/
-  SD_ADDR_MISALIGNED                 = (9), /* Misaligned address */
-  SD_BLOCK_LEN_ERR                   = (10), /* Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */
-  SD_ERASE_SEQ_ERR                   = (11), /* An error in the sequence of erase command occurs.*/
-  SD_BAD_ERASE_PARAM                 = (12), /* An Invalid selection for erase groups */
-  SD_WRITE_PROT_VIOLATION            = (13), /* Attempt to program a write protect block */
-  SD_LOCK_UNLOCK_FAILED              = (14), /* Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */
-  SD_COM_CRC_FAILED                  = (15), /* CRC check of the previous command failed */
-  SD_ILLEGAL_CMD                     = (16), /* Command is not legal for the card state */
-  SD_CARD_ECC_FAILED                 = (17), /* Card internal ECC was applied but failed to correct the data */
-  SD_CC_ERROR                        = (18), /* Internal card controller error */
-  SD_GENERAL_UNKNOWN_ERROR           = (19), /* General or Unknown error */
-  SD_STREAM_READ_UNDERRUN            = (20), /* The card could not sustain data transfer in stream read operation. */
-  SD_STREAM_WRITE_OVERRUN            = (21), /* The card could not sustain data programming in stream mode */
-  SD_CID_CSD_OVERWRITE               = (22), /* CID/CSD overwrite error */
-  SD_WP_ERASE_SKIP                   = (23), /* only partial address space was erased */
-  SD_CARD_ECC_DISABLED               = (24), /* Command has been executed without using internal ECC */
-  SD_ERASE_RESET                     = (25), /* Erase sequence was cleared before executing because an out of erase sequence command was received */
-  SD_AKE_SEQ_ERROR                   = (26), /* Error in sequence of authentication. */
-  SD_INVALID_VOLTRANGE               = (27),
-  SD_ADDR_OUT_OF_RANGE               = (28),
-  SD_SWITCH_ERROR                    = (29),
-  SD_SDIO_DISABLED                   = (30),
-  SD_SDIO_FUNCTION_BUSY              = (31),
-  SD_SDIO_FUNCTION_FAILED            = (32),
-  SD_SDIO_UNKNOWN_FUNCTION           = (33),
-
-  /* Standard error defines */
-  SD_INTERNAL_ERROR, 
-  SD_NOT_CONFIGURED,
-  SD_REQUEST_PENDING, 
-  SD_REQUEST_NOT_APPLICABLE, 
-  SD_INVALID_PARAMETER,  
-  SD_UNSUPPORTED_FEATURE,  
-  SD_UNSUPPORTED_HW,  
-  SD_ERROR,  
-  SD_OK,  
-} SD_Error;
-
-/* SDIO Commands  Index */
-#define SDIO_GO_IDLE_STATE                       ((uint8_t)0)
-#define SDIO_SEND_OP_COND                        ((uint8_t)1)
-#define SDIO_ALL_SEND_CID                        ((uint8_t)2)
-#define SDIO_SET_REL_ADDR                        ((uint8_t)3) /* SDIO_SEND_REL_ADDR for SD Card */
-#define SDIO_SET_DSR                             ((uint8_t)4)
-#define SDIO_SDIO_SEN_OP_COND                    ((uint8_t)5)
-#define SDIO_HS_SWITCH                           ((uint8_t)6)
-#define SDIO_SEL_DESEL_CARD                      ((uint8_t)7)
-#define SDIO_HS_SEND_EXT_CSD                     ((uint8_t)8)
-#define SDIO_SEND_CSD                            ((uint8_t)9)
-#define SDIO_SEND_CID                            ((uint8_t)10)
-#define SDIO_READ_DAT_UNTIL_STOP                 ((uint8_t)11) /* SD Card doesn't support it */
-#define SDIO_STOP_TRANSMISSION                   ((uint8_t)12)
-#define SDIO_SEND_STATUS                         ((uint8_t)13)
-#define SDIO_HS_BUSTEST_READ                     ((uint8_t)14)
-#define SDIO_GO_INACTIVE_STATE                   ((uint8_t)15)
-#define SDIO_SET_BLOCKLEN                        ((uint8_t)16)
-#define SDIO_READ_SINGLE_BLOCK                   ((uint8_t)17)
-#define SDIO_READ_MULT_BLOCK                     ((uint8_t)18)
-#define SDIO_HS_BUSTEST_WRITE                    ((uint8_t)19)
-#define SDIO_WRITE_DAT_UNTIL_STOP                ((uint8_t)20) /* SD Card doesn't support it */
-#define SDIO_SET_BLOCK_COUNT                     ((uint8_t)23) /* SD Card doesn't support it */
-#define SDIO_WRITE_SINGLE_BLOCK                  ((uint8_t)24)
-#define SDIO_WRITE_MULT_BLOCK                    ((uint8_t)25)
-#define SDIO_PROG_CID                            ((uint8_t)26) /* reserved for manufacturers */
-#define SDIO_PROG_CSD                            ((uint8_t)27)
-#define SDIO_SET_WRITE_PROT                      ((uint8_t)28)
-#define SDIO_CLR_WRITE_PROT                      ((uint8_t)29)
-#define SDIO_SEND_WRITE_PROT                     ((uint8_t)30)
-#define SDIO_SD_ERASE_GRP_START                  ((uint8_t)32) /* To set the address of the first write
-                                                                  block to be erased. (For SD card only) */
-#define SDIO_SD_ERASE_GRP_END                    ((uint8_t)33) /* To set the address of the last write block of the
-                                                                  continuous range to be erased. (For SD card only) */
-#define SDIO_ERASE_GRP_START                     ((uint8_t)35) /* To set the address of the first write block to be erased.
-                                                                  (For MMC card only spec 3.31) */
-
-#define SDIO_ERASE_GRP_END                       ((uint8_t)36) /* To set the address of the last write block of the
-                                                                  continuous range to be erased. (For MMC card only spec 3.31) */
-
-#define SDIO_ERASE                               ((uint8_t)38)
-#define SDIO_FAST_IO                             ((uint8_t)39) /* SD Card doesn't support it */
-#define SDIO_GO_IRQ_STATE                        ((uint8_t)40) /* SD Card doesn't support it */
-#define SDIO_LOCK_UNLOCK                         ((uint8_t)42)
-#define SDIO_APP_CMD                             ((uint8_t)55)
-#define SDIO_GEN_CMD                             ((uint8_t)56)
-#define SDIO_NO_CMD                              ((uint8_t)64)
-
-/* Following commands are SD Card Specific commands.
-   SDIO_APP_CMD should be sent before sending these
-   commands. */
-#define SDIO_APP_SD_SET_BUSWIDTH                 ((uint8_t)6)  /* For SD Card only */
-#define SDIO_SD_APP_STAUS                        ((uint8_t)13) /* For SD Card only */
-#define SDIO_SD_APP_SEND_NUM_WRITE_BLOCKS        ((uint8_t)22) /* For SD Card only */
-#define SDIO_SD_APP_OP_COND                      ((uint8_t)41) /* For SD Card only */
-#define SDIO_SD_APP_SET_CLR_CARD_DETECT          ((uint8_t)42) /* For SD Card only */
-#define SDIO_SD_APP_SEND_SCR                     ((uint8_t)51) /* For SD Card only */
-#define SDIO_SDIO_RW_DIRECT                      ((uint8_t)52) /* For SD I/O Card only */
-#define SDIO_SDIO_RW_EXTENDED                    ((uint8_t)53) /* For SD I/O Card only */
-
-/* Following commands are SD Card Specific security commands.
-   SDIO_APP_CMD should be sent before sending these commands. */
-#define SDIO_SD_APP_GET_MKB                      ((uint8_t)43) /* For SD Card only */
-#define SDIO_SD_APP_GET_MID                      ((uint8_t)44) /* For SD Card only */
-#define SDIO_SD_APP_SET_CER_RN1                  ((uint8_t)45) /* For SD Card only */
-#define SDIO_SD_APP_GET_CER_RN2                  ((uint8_t)46) /* For SD Card only */
-#define SDIO_SD_APP_SET_CER_RES2                 ((uint8_t)47) /* For SD Card only */
-#define SDIO_SD_APP_GET_CER_RES1                 ((uint8_t)48) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_READ_MULTIPLE_BLOCK   ((uint8_t)18) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK  ((uint8_t)25) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_ERASE                 ((uint8_t)38) /* For SD Card only */
-#define SDIO_SD_APP_CHANGE_SECURE_AREA           ((uint8_t)49) /* For SD Card only */
-#define SDIO_SD_APP_SECURE_WRITE_MKB             ((uint8_t)48) /* For SD Card only */
-
-typedef enum
-{
-  SD_NO_TRANSFER  = 0,
-  SD_TRANSFER_IN_PROGRESS
-} SDTransferState;
-
-typedef struct
-{
-  uint16_t TransferredBytes;
-  SD_Error TransferError;
-  uint8_t  padding;
-} SDLastTransferInfo;
-
-typedef struct       /* Card Specific Data */
-{
-  __IO uint8_t  CSDStruct;            /* CSD structure */
-  __IO uint8_t  SysSpecVersion;       /* System specification version */
-  __IO uint8_t  Reserved1;            /* Reserved */
-  __IO uint8_t  TAAC;                 /* Data read access-time 1 */
-  __IO uint8_t  NSAC;                 /* Data read access-time 2 in CLK cycles */
-  __IO uint8_t  MaxBusClkFrec;        /* Max. bus clock frequency */
-  __IO uint16_t CardComdClasses;      /* Card command classes */
-  __IO uint8_t  RdBlockLen;           /* Max. read data block length */
-  __IO uint8_t  PartBlockRead;        /* Partial blocks for read allowed */
-  __IO uint8_t  WrBlockMisalign;      /* Write block misalignment */
-  __IO uint8_t  RdBlockMisalign;      /* Read block misalignment */
-  __IO uint8_t  DSRImpl;              /* DSR implemented */
-  __IO uint8_t  Reserved2;            /* Reserved */
-  __IO uint32_t DeviceSize;           /* Device Size */
-  __IO uint8_t  MaxRdCurrentVDDMin;   /* Max. read current @ VDD min */
-  __IO uint8_t  MaxRdCurrentVDDMax;   /* Max. read current @ VDD max */
-  __IO uint8_t  MaxWrCurrentVDDMin;   /* Max. write current @ VDD min */
-  __IO uint8_t  MaxWrCurrentVDDMax;   /* Max. write current @ VDD max */
-  __IO uint8_t  DeviceSizeMul;        /* Device size multiplier */
-  __IO uint8_t  EraseGrSize;          /* Erase group size */
-  __IO uint8_t  EraseGrMul;           /* Erase group size multiplier */
-  __IO uint8_t  WrProtectGrSize;      /* Write protect group size */
-  __IO uint8_t  WrProtectGrEnable;    /* Write protect group enable */
-  __IO uint8_t  ManDeflECC;           /* Manufacturer default ECC */
-  __IO uint8_t  WrSpeedFact;          /* Write speed factor */
-  __IO uint8_t  MaxWrBlockLen;        /* Max. write data block length */
-  __IO uint8_t  WriteBlockPaPartial;  /* Partial blocks for write allowed */
-  __IO uint8_t  Reserved3;            /* Reserded */
-  __IO uint8_t  ContentProtectAppli;  /* Content protection application */
-  __IO uint8_t  FileFormatGrouop;     /* File format group */
-  __IO uint8_t  CopyFlag;             /* Copy flag (OTP) */
-  __IO uint8_t  PermWrProtect;        /* Permanent write protection */
-  __IO uint8_t  TempWrProtect;        /* Temporary write protection */
-  __IO uint8_t  FileFormat;           /* File Format */
-  __IO uint8_t  ECC;                  /* ECC code */
-  __IO uint8_t  CSD_CRC;              /* CSD CRC */
-  __IO uint8_t  Reserved4;            /* always 1*/
-} SD_CSD;
-
-typedef struct      /*Card Identification Data*/
-{
-  __IO uint8_t  ManufacturerID;       /* ManufacturerID */
-  __IO uint16_t OEM_AppliID;          /* OEM/Application ID */
-  __IO uint32_t ProdName1;            /* Product Name part1 */
-  __IO uint8_t  ProdName2;            /* Product Name part2*/
-  __IO uint8_t  ProdRev;              /* Product Revision */
-  __IO uint32_t ProdSN;               /* Product Serial Number */
-  __IO uint8_t  Reserved1;            /* Reserved1 */
-  __IO uint16_t ManufactDate;         /* Manufacturing Date */
-  __IO uint8_t  CID_CRC;              /* CID CRC */
-  __IO uint8_t  Reserved2;            /* always 1 */
-} SD_CID;
-
-typedef struct
-{
-  SD_CSD SD_csd;
-  SD_CID SD_cid;
-  uint32_t CardCapacity; /* Card Capacity */
-  uint32_t CardBlockSize; /* Card Block Size */
-  uint16_t RCA;
-  uint8_t CardType;
-} SD_CardInfo;
-
-/* Exported constants --------------------------------------------------------*/
-#define SD_DMA_MODE                     ((uint32_t)0x00000000)
-#define SD_INTERRUPT_MODE               ((uint32_t)0x00000001)
-#define SD_POLLING_MODE                 ((uint32_t)0x00000002)
-
-/* Supported Memory Cards */
-#define SDIO_STD_CAPACITY_SD_CARD_V1_1     ((uint32_t)0x0)
-#define SDIO_STD_CAPACITY_SD_CARD_V2_0     ((uint32_t)0x1)
-#define SDIO_HIGH_CAPACITY_SD_CARD         ((uint32_t)0x2)
-#define SDIO_MULTIMEDIA_CARD               ((uint32_t)0x3)
-#define SDIO_SECURE_DIGITAL_IO_CARD        ((uint32_t)0x4)
-#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD    ((uint32_t)0x5)
-#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD  ((uint32_t)0x6)
-#define SDIO_HIGH_CAPACITY_MMC_CARD        ((uint32_t)0x7)
-
-/* Exported macro ------------------------------------------------------------*/
-/* Exported functions ------------------------------------------------------- */
-SD_Error SD_Init(void);
-SD_Error SD_PowerON(void);
-SD_Error SD_PowerOFF(void);
-SD_Error SD_InitializeCards(void);
-SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo);
-SD_Error SD_EnableWideBusOperation(uint32_t WideMode);
-SD_Error SD_SetDeviceMode(uint32_t Mode);
-SD_Error SD_SelectDeselect(uint32_t addr);
-SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize);
-SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks);
-SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize);
-SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks);
-SDTransferState SD_GetTransferState(void);
-SD_Error SD_StopTransfer(void);
-SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr);
-SD_Error SD_SendStatus(uint32_t *pcardstatus);
-SD_Error SD_SendSDStatus(uint32_t *psdstatus);
-SD_Error SD_ProcessIRQSrc(void);
-
-#endif /* __SDCARD_H */
-
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-  
-/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
+/**
+  ******************************************************************************
+  * @file    SDIO/sdcard.h
+  * @author  MCD Application Team
+  * @version V3.1.2
+  * @date    09/28/2009
+  * @brief   This file contains all the functions prototypes for the SD Card
+  *          driver firmware library.
+  ******************************************************************************
+  * @copy
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2009 STMicroelectronics</center></h2>
+  */
+
+/** @addtogroup STM32F10x_StdPeriph_Examples
+  * @{
+  */
+
+/** @addtogroup SDIO_Example
+  * @{
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __SDCARD_H
+#define __SDCARD_H
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x.h"
+
+/* Exported types ------------------------------------------------------------*/
+typedef enum
+{
+  /* SDIO specific error defines */
+  SD_CMD_CRC_FAIL                    = (1), /* Command response received (but CRC check failed) */
+  SD_DATA_CRC_FAIL                   = (2), /* Data bock sent/received (CRC check Failed) */
+  SD_CMD_RSP_TIMEOUT                 = (3), /* Command response timeout */
+  SD_DATA_TIMEOUT                    = (4), /* Data time out */
+  SD_TX_UNDERRUN                     = (5), /* Transmit FIFO under-run */
+  SD_RX_OVERRUN                      = (6), /* Receive FIFO over-run */
+  SD_START_BIT_ERR                   = (7), /* Start bit not detected on all data signals in widE bus mode */
+  SD_CMD_OUT_OF_RANGE                = (8), /* CMD's argument was out of range.*/
+  SD_ADDR_MISALIGNED                 = (9), /* Misaligned address */
+  SD_BLOCK_LEN_ERR                   = (10), /* Transferred block length is not allowed for the card or the number of transferred bytes does not match the block length */
+  SD_ERASE_SEQ_ERR                   = (11), /* An error in the sequence of erase command occurs.*/
+  SD_BAD_ERASE_PARAM                 = (12), /* An Invalid selection for erase groups */
+  SD_WRITE_PROT_VIOLATION            = (13), /* Attempt to program a write protect block */
+  SD_LOCK_UNLOCK_FAILED              = (14), /* Sequence or password error has been detected in unlock command or if there was an attempt to access a locked card */
+  SD_COM_CRC_FAILED                  = (15), /* CRC check of the previous command failed */
+  SD_ILLEGAL_CMD                     = (16), /* Command is not legal for the card state */
+  SD_CARD_ECC_FAILED                 = (17), /* Card internal ECC was applied but failed to correct the data */
+  SD_CC_ERROR                        = (18), /* Internal card controller error */
+  SD_GENERAL_UNKNOWN_ERROR           = (19), /* General or Unknown error */
+  SD_STREAM_READ_UNDERRUN            = (20), /* The card could not sustain data transfer in stream read operation. */
+  SD_STREAM_WRITE_OVERRUN            = (21), /* The card could not sustain data programming in stream mode */
+  SD_CID_CSD_OVERWRITE               = (22), /* CID/CSD overwrite error */
+  SD_WP_ERASE_SKIP                   = (23), /* only partial address space was erased */
+  SD_CARD_ECC_DISABLED               = (24), /* Command has been executed without using internal ECC */
+  SD_ERASE_RESET                     = (25), /* Erase sequence was cleared before executing because an out of erase sequence command was received */
+  SD_AKE_SEQ_ERROR                   = (26), /* Error in sequence of authentication. */
+  SD_INVALID_VOLTRANGE               = (27),
+  SD_ADDR_OUT_OF_RANGE               = (28),
+  SD_SWITCH_ERROR                    = (29),
+  SD_SDIO_DISABLED                   = (30),
+  SD_SDIO_FUNCTION_BUSY              = (31),
+  SD_SDIO_FUNCTION_FAILED            = (32),
+  SD_SDIO_UNKNOWN_FUNCTION           = (33),
+
+  /* Standard error defines */
+  SD_INTERNAL_ERROR,
+  SD_NOT_CONFIGURED,
+  SD_REQUEST_PENDING,
+  SD_REQUEST_NOT_APPLICABLE,
+  SD_INVALID_PARAMETER,
+  SD_UNSUPPORTED_FEATURE,
+  SD_UNSUPPORTED_HW,
+  SD_ERROR,
+  SD_OK,
+} SD_Error;
+
+/* SDIO Commands  Index */
+#define SDIO_GO_IDLE_STATE                       ((uint8_t)0)
+#define SDIO_SEND_OP_COND                        ((uint8_t)1)
+#define SDIO_ALL_SEND_CID                        ((uint8_t)2)
+#define SDIO_SET_REL_ADDR                        ((uint8_t)3) /* SDIO_SEND_REL_ADDR for SD Card */
+#define SDIO_SET_DSR                             ((uint8_t)4)
+#define SDIO_SDIO_SEN_OP_COND                    ((uint8_t)5)
+#define SDIO_HS_SWITCH                           ((uint8_t)6)
+#define SDIO_SEL_DESEL_CARD                      ((uint8_t)7)
+#define SDIO_HS_SEND_EXT_CSD                     ((uint8_t)8)
+#define SDIO_SEND_CSD                            ((uint8_t)9)
+#define SDIO_SEND_CID                            ((uint8_t)10)
+#define SDIO_READ_DAT_UNTIL_STOP                 ((uint8_t)11) /* SD Card doesn't support it */
+#define SDIO_STOP_TRANSMISSION                   ((uint8_t)12)
+#define SDIO_SEND_STATUS                         ((uint8_t)13)
+#define SDIO_HS_BUSTEST_READ                     ((uint8_t)14)
+#define SDIO_GO_INACTIVE_STATE                   ((uint8_t)15)
+#define SDIO_SET_BLOCKLEN                        ((uint8_t)16)
+#define SDIO_READ_SINGLE_BLOCK                   ((uint8_t)17)
+#define SDIO_READ_MULT_BLOCK                     ((uint8_t)18)
+#define SDIO_HS_BUSTEST_WRITE                    ((uint8_t)19)
+#define SDIO_WRITE_DAT_UNTIL_STOP                ((uint8_t)20) /* SD Card doesn't support it */
+#define SDIO_SET_BLOCK_COUNT                     ((uint8_t)23) /* SD Card doesn't support it */
+#define SDIO_WRITE_SINGLE_BLOCK                  ((uint8_t)24)
+#define SDIO_WRITE_MULT_BLOCK                    ((uint8_t)25)
+#define SDIO_PROG_CID                            ((uint8_t)26) /* reserved for manufacturers */
+#define SDIO_PROG_CSD                            ((uint8_t)27)
+#define SDIO_SET_WRITE_PROT                      ((uint8_t)28)
+#define SDIO_CLR_WRITE_PROT                      ((uint8_t)29)
+#define SDIO_SEND_WRITE_PROT                     ((uint8_t)30)
+#define SDIO_SD_ERASE_GRP_START                  ((uint8_t)32) /* To set the address of the first write
+                                                                  block to be erased. (For SD card only) */
+#define SDIO_SD_ERASE_GRP_END                    ((uint8_t)33) /* To set the address of the last write block of the
+                                                                  continuous range to be erased. (For SD card only) */
+#define SDIO_ERASE_GRP_START                     ((uint8_t)35) /* To set the address of the first write block to be erased.
+                                                                  (For MMC card only spec 3.31) */
+
+#define SDIO_ERASE_GRP_END                       ((uint8_t)36) /* To set the address of the last write block of the
+                                                                  continuous range to be erased. (For MMC card only spec 3.31) */
+
+#define SDIO_ERASE                               ((uint8_t)38)
+#define SDIO_FAST_IO                             ((uint8_t)39) /* SD Card doesn't support it */
+#define SDIO_GO_IRQ_STATE                        ((uint8_t)40) /* SD Card doesn't support it */
+#define SDIO_LOCK_UNLOCK                         ((uint8_t)42)
+#define SDIO_APP_CMD                             ((uint8_t)55)
+#define SDIO_GEN_CMD                             ((uint8_t)56)
+#define SDIO_NO_CMD                              ((uint8_t)64)
+
+/* Following commands are SD Card Specific commands.
+   SDIO_APP_CMD should be sent before sending these
+   commands. */
+#define SDIO_APP_SD_SET_BUSWIDTH                 ((uint8_t)6)  /* For SD Card only */
+#define SDIO_SD_APP_STAUS                        ((uint8_t)13) /* For SD Card only */
+#define SDIO_SD_APP_SEND_NUM_WRITE_BLOCKS        ((uint8_t)22) /* For SD Card only */
+#define SDIO_SD_APP_OP_COND                      ((uint8_t)41) /* For SD Card only */
+#define SDIO_SD_APP_SET_CLR_CARD_DETECT          ((uint8_t)42) /* For SD Card only */
+#define SDIO_SD_APP_SEND_SCR                     ((uint8_t)51) /* For SD Card only */
+#define SDIO_SDIO_RW_DIRECT                      ((uint8_t)52) /* For SD I/O Card only */
+#define SDIO_SDIO_RW_EXTENDED                    ((uint8_t)53) /* For SD I/O Card only */
+
+/* Following commands are SD Card Specific security commands.
+   SDIO_APP_CMD should be sent before sending these commands. */
+#define SDIO_SD_APP_GET_MKB                      ((uint8_t)43) /* For SD Card only */
+#define SDIO_SD_APP_GET_MID                      ((uint8_t)44) /* For SD Card only */
+#define SDIO_SD_APP_SET_CER_RN1                  ((uint8_t)45) /* For SD Card only */
+#define SDIO_SD_APP_GET_CER_RN2                  ((uint8_t)46) /* For SD Card only */
+#define SDIO_SD_APP_SET_CER_RES2                 ((uint8_t)47) /* For SD Card only */
+#define SDIO_SD_APP_GET_CER_RES1                 ((uint8_t)48) /* For SD Card only */
+#define SDIO_SD_APP_SECURE_READ_MULTIPLE_BLOCK   ((uint8_t)18) /* For SD Card only */
+#define SDIO_SD_APP_SECURE_WRITE_MULTIPLE_BLOCK  ((uint8_t)25) /* For SD Card only */
+#define SDIO_SD_APP_SECURE_ERASE                 ((uint8_t)38) /* For SD Card only */
+#define SDIO_SD_APP_CHANGE_SECURE_AREA           ((uint8_t)49) /* For SD Card only */
+#define SDIO_SD_APP_SECURE_WRITE_MKB             ((uint8_t)48) /* For SD Card only */
+
+typedef enum
+{
+  SD_NO_TRANSFER  = 0,
+  SD_TRANSFER_IN_PROGRESS
+} SDTransferState;
+
+typedef struct
+{
+  uint16_t TransferredBytes;
+  SD_Error TransferError;
+  uint8_t  padding;
+} SDLastTransferInfo;
+
+typedef struct       /* Card Specific Data */
+{
+  __IO uint8_t  CSDStruct;            /* CSD structure */
+  __IO uint8_t  SysSpecVersion;       /* System specification version */
+  __IO uint8_t  Reserved1;            /* Reserved */
+  __IO uint8_t  TAAC;                 /* Data read access-time 1 */
+  __IO uint8_t  NSAC;                 /* Data read access-time 2 in CLK cycles */
+  __IO uint8_t  MaxBusClkFrec;        /* Max. bus clock frequency */
+  __IO uint16_t CardComdClasses;      /* Card command classes */
+  __IO uint8_t  RdBlockLen;           /* Max. read data block length */
+  __IO uint8_t  PartBlockRead;        /* Partial blocks for read allowed */
+  __IO uint8_t  WrBlockMisalign;      /* Write block misalignment */
+  __IO uint8_t  RdBlockMisalign;      /* Read block misalignment */
+  __IO uint8_t  DSRImpl;              /* DSR implemented */
+  __IO uint8_t  Reserved2;            /* Reserved */
+  __IO uint32_t DeviceSize;           /* Device Size */
+  __IO uint8_t  MaxRdCurrentVDDMin;   /* Max. read current @ VDD min */
+  __IO uint8_t  MaxRdCurrentVDDMax;   /* Max. read current @ VDD max */
+  __IO uint8_t  MaxWrCurrentVDDMin;   /* Max. write current @ VDD min */
+  __IO uint8_t  MaxWrCurrentVDDMax;   /* Max. write current @ VDD max */
+  __IO uint8_t  DeviceSizeMul;        /* Device size multiplier */
+  __IO uint8_t  EraseGrSize;          /* Erase group size */
+  __IO uint8_t  EraseGrMul;           /* Erase group size multiplier */
+  __IO uint8_t  WrProtectGrSize;      /* Write protect group size */
+  __IO uint8_t  WrProtectGrEnable;    /* Write protect group enable */
+  __IO uint8_t  ManDeflECC;           /* Manufacturer default ECC */
+  __IO uint8_t  WrSpeedFact;          /* Write speed factor */
+  __IO uint8_t  MaxWrBlockLen;        /* Max. write data block length */
+  __IO uint8_t  WriteBlockPaPartial;  /* Partial blocks for write allowed */
+  __IO uint8_t  Reserved3;            /* Reserded */
+  __IO uint8_t  ContentProtectAppli;  /* Content protection application */
+  __IO uint8_t  FileFormatGrouop;     /* File format group */
+  __IO uint8_t  CopyFlag;             /* Copy flag (OTP) */
+  __IO uint8_t  PermWrProtect;        /* Permanent write protection */
+  __IO uint8_t  TempWrProtect;        /* Temporary write protection */
+  __IO uint8_t  FileFormat;           /* File Format */
+  __IO uint8_t  ECC;                  /* ECC code */
+  __IO uint8_t  CSD_CRC;              /* CSD CRC */
+  __IO uint8_t  Reserved4;            /* always 1*/
+} SD_CSD;
+
+typedef struct      /*Card Identification Data*/
+{
+  __IO uint8_t  ManufacturerID;       /* ManufacturerID */
+  __IO uint16_t OEM_AppliID;          /* OEM/Application ID */
+  __IO uint32_t ProdName1;            /* Product Name part1 */
+  __IO uint8_t  ProdName2;            /* Product Name part2*/
+  __IO uint8_t  ProdRev;              /* Product Revision */
+  __IO uint32_t ProdSN;               /* Product Serial Number */
+  __IO uint8_t  Reserved1;            /* Reserved1 */
+  __IO uint16_t ManufactDate;         /* Manufacturing Date */
+  __IO uint8_t  CID_CRC;              /* CID CRC */
+  __IO uint8_t  Reserved2;            /* always 1 */
+} SD_CID;
+
+typedef struct
+{
+  SD_CSD SD_csd;
+  SD_CID SD_cid;
+  uint32_t CardCapacity; /* Card Capacity */
+  uint32_t CardBlockSize; /* Card Block Size */
+  uint16_t RCA;
+  uint8_t CardType;
+} SD_CardInfo;
+
+/* Exported constants --------------------------------------------------------*/
+#define SD_DMA_MODE                     ((uint32_t)0x00000000)
+#define SD_INTERRUPT_MODE               ((uint32_t)0x00000001)
+#define SD_POLLING_MODE                 ((uint32_t)0x00000002)
+
+/* Supported Memory Cards */
+#define SDIO_STD_CAPACITY_SD_CARD_V1_1     ((uint32_t)0x0)
+#define SDIO_STD_CAPACITY_SD_CARD_V2_0     ((uint32_t)0x1)
+#define SDIO_HIGH_CAPACITY_SD_CARD         ((uint32_t)0x2)
+#define SDIO_MULTIMEDIA_CARD               ((uint32_t)0x3)
+#define SDIO_SECURE_DIGITAL_IO_CARD        ((uint32_t)0x4)
+#define SDIO_HIGH_SPEED_MULTIMEDIA_CARD    ((uint32_t)0x5)
+#define SDIO_SECURE_DIGITAL_IO_COMBO_CARD  ((uint32_t)0x6)
+#define SDIO_HIGH_CAPACITY_MMC_CARD        ((uint32_t)0x7)
+
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+SD_Error SD_Init(void);
+SD_Error SD_PowerON(void);
+SD_Error SD_PowerOFF(void);
+SD_Error SD_InitializeCards(void);
+SD_Error SD_GetCardInfo(SD_CardInfo *cardinfo);
+SD_Error SD_EnableWideBusOperation(uint32_t WideMode);
+SD_Error SD_SetDeviceMode(uint32_t Mode);
+SD_Error SD_SelectDeselect(uint32_t addr);
+SD_Error SD_ReadBlock(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize);
+SD_Error SD_ReadMultiBlocks(uint32_t addr, uint32_t *readbuff, uint16_t BlockSize, uint32_t NumberOfBlocks);
+SD_Error SD_WriteBlock(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize);
+SD_Error SD_WriteMultiBlocks(uint32_t addr, uint32_t *writebuff, uint16_t BlockSize, uint32_t NumberOfBlocks);
+SDTransferState SD_GetTransferState(void);
+SD_Error SD_StopTransfer(void);
+SD_Error SD_Erase(uint32_t startaddr, uint32_t endaddr);
+SD_Error SD_SendStatus(uint32_t *pcardstatus);
+SD_Error SD_SendSDStatus(uint32_t *psdstatus);
+SD_Error SD_ProcessIRQSrc(void);
+
+#endif /* __SDCARD_H */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
diff --git a/bsp/stm32_radio/usart.h b/bsp/stm32_radio/usart.h
index ae74ffde71..36c5f19b1e 100644
--- a/bsp/stm32_radio/usart.h
+++ b/bsp/stm32_radio/usart.h
@@ -1,3 +1,17 @@
+/*
+ * File      : usart.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2009, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2009-01-05     Bernard      the first version
+ */
+
 #ifndef __USART_H__
 #define __USART_H__
author	bernard.xiong <[email protected]>	2010-01-21 14:12:40 +0000
committer	bernard.xiong <[email protected]>	2010-01-21 14:12:40 +0000
commit	cefc4f7aa5f819f8f4f5aa9f356d33076f9b0af2 (patch)
tree	c718fc281333497b443bf9c2aba39dba9c2c1fbb /bsp
parent	c28ecae7edc0d9e066c99eb8ad040a73dba56525 (diff)