3 files changed, 9 insertions, 18 deletions
diff --git a/bsp/sam7x/project.Uv2 b/bsp/sam7x/project.Uv2
index 06978fc0f7..a85abceb86 100644
--- a/bsp/sam7x/project.Uv2
+++ b/bsp/sam7x/project.Uv2
@@ -88,24 +88,14 @@ File 5,1,<..\..\net\lwip\src\netif\loopif.c><loopif.c>
 File 5,1,<..\..\net\lwip\src\arch\sys_arch_init.c><sys_arch_init.c>
 File 5,1,<..\..\net\lwip\src\arch\sys_arch.c><sys_arch.c>
 File 5,1,<..\..\net\lwip\src\api\sockets.c><sockets.c>
-File 5,1,<..\..\net\lwip\src\core\memp_tiny.c><memp_tiny.c>
+File 5,1,<E:\Projects\opensvn\rt-thread\google\net\lwip\src\core\memp.c><memp.c>
 File 6,1,<..\..\filesystem\dfs\src\dfs_util.c><dfs_util.c>
-File 6,1,<..\..\filesystem\dfs\src\dfs_cache.c><dfs_cache.c>
 File 6,1,<..\..\filesystem\dfs\src\dfs_fs.c><dfs_fs.c>
 File 6,1,<..\..\filesystem\dfs\src\dfs_init.c><dfs_init.c>
 File 6,1,<..\..\filesystem\dfs\src\dfs_raw.c><dfs_raw.c>
 File 6,1,<..\..\filesystem\dfs\src\dfs_posix.c><dfs_posix.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\plibc.c><plibc.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\efs.c><efs.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\extract.c><extract.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\base\partition.c><partition.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\ui.c><ui.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\dir.c><dir.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\fat.c><fat.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\file.c><file.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\fs.c><fs.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\ls.c><ls.c>
-File 6,1,<..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\time.c><time.c>
+File 6,1,<..\..\filesystem\dfs\filesystems\elmfat\ff.c><ff.c>
+File 6,1,<..\..\filesystem\dfs\filesystems\elmfat\dfs_elm.c><dfs_elm.c>
 
 
 Options 1,0,0  // Target 'RT-Thread/AT91SAM7X'
@@ -166,7 +156,7 @@ Options 1,0,0  // Target 'RT-Thread/AT91SAM7X'
  ADSCMISC ()
  ADSCDEFN ()
  ADSCUDEF ()
- ADSCINCD (.;..\..\include;..\..\libcpu\arm\AT91SAM7X;..\..\finsh;..\..\net\lwip\src\include;..\..\net\lwip\src;..\..\net\lwip\src\arch\include;..\..\net\lwip\src\include\ipv4;;..\..\filesystem\dfs;..\..\filesystem\dfs\include;..\..\filesystem\dfs\filesystems\efsl\src\include;..\..\filesystem\dfs\filesystems\efsl\src\base\include;..\..\filesystem\dfs\filesystems\efsl\src\fs\vfat\include)
+ ADSCINCD (.;..\..\include;..\..\libcpu\arm\AT91SAM7X;..\..\finsh;..\..\net\lwip\src\include;..\..\net\lwip\src;..\..\net\lwip\src\arch\include;..\..\net\lwip\src\include\ipv4;..\..\filesystem\dfs;..\..\filesystem\dfs\include)
  ADSASFLG { 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
  ADSAMISC ()
  ADSADEFN ()
diff --git a/bsp/sam7x/rtconfig.h b/bsp/sam7x/rtconfig.h
index 6a47581def..4e37ab0a2b 100644
--- a/bsp/sam7x/rtconfig.h
+++ b/bsp/sam7x/rtconfig.h
@@ -81,7 +81,8 @@
 
 /* SECTION: lwip, a lighwight TCP/IP protocol stack */
 /* Using lighweight TCP/IP protocol stack*/
-//#define RT_USING_LWIP
+#define RT_USING_LWIP
+#define RT_LWIP_USING_RT_MEM
 
 /* Trace LwIP protocol*/
 /* #define RT_LWIP_DEBUG */
diff --git a/bsp/sam7x/sd.c b/bsp/sam7x/sd.c
index da66b00c63..ad93243dcc 100644
--- a/bsp/sam7x/sd.c
+++ b/bsp/sam7x/sd.c
@@ -545,11 +545,11 @@ static rt_size_t rt_sdcard_write (rt_device_t dev, rt_off_t pos, const void* buf
 
 	if (count)
 	{
-		// rt_set_errno(-RT_ERROR);
+		rt_set_errno(-RT_ERROR);
 		return 0;
 	}
-	
-	return size / 512;
+
+	return size;
 }
 
 static rt_err_t rt_sdcard_control(rt_device_t dev, rt_uint8_t cmd, void *args)