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-rw-r--r--bsp/lpc2478/board.c202
-rw-r--r--bsp/lpc2478/startup.c53
2 files changed, 79 insertions, 176 deletions
diff --git a/bsp/lpc2478/board.c b/bsp/lpc2478/board.c
index 26059b5072..d08e1aa763 100644
--- a/bsp/lpc2478/board.c
+++ b/bsp/lpc2478/board.c
@@ -18,7 +18,7 @@
#include <LPC24xx.h>
#include "board.h"
-/* #define BOARD_DEBUG */
+/* #define RT_BOARD_DEBUG */
#define DATA_COUNT 14400000/RT_TICK_PER_SECOND /* T0MR0 = delayInMs * (Fpclk / 1000); */
@@ -36,17 +36,63 @@ void rt_timer_handler(int vector)
T0IR |= 0x01; /* clear interrupt flag */
rt_tick_increase();
VICVectAddr = 0; /* Acknowledge Interrupt */
-}
+}
+
+
+/**
+ * This function is used to display a string on console, normally, it's
+ * invoked by rt_kprintf
+ *
+ * @param str the displayed string
+ */
+void rt_hw_console_output(const char* str)
+{
+ while (*str)
+ {
+ if (*str=='\n')
+ {
+ while (!(U0LSR & 0x20));
+ U0THR = '\r';
+ }
+
+ while (!(U0LSR & 0x20));
+ U0THR = *str;
+
+ str ++;
+ }
+}
+
+#define BAUD_RATE 115200
+#define U0PINS 0x50
+void rt_hw_console_init()
+{
+ rt_uint32_t fdiv;
+
+ /* Enable RxD and TxD pins */
+ PINSEL0 = U0PINS;
+
+ /* 8 bits, no Parity, 1 Stop bit */
+ U0LCR = 0x83;
+
+ /* Setup Baudrate */
+ fdiv = ( PCLK / 16 ) / BAUD_RATE ; /*baud rate */
+ U0DLM = fdiv / 256;
+ U0DLL = fdiv % 256;
+ U0FCR = 0x00; /* Enable and reset TX and RX FIFO. */
+ U0LCR = 0x03; /* DLAB = 0 */
+
+ /* DLAB = 0 */
+ U0LCR = 0x03;
+}
/**
* This function will init LPC2478 board
*/
void rt_hw_board_init()
{
- extern void rt_serial_init(void);
- /* init hardware serial */
- rt_serial_init();
-
+ /* init console for rt_kprintf function */
+ rt_hw_console_init();
+
T0IR = 0xff;
T0TC = 0;
T0MCR = 0x03;
@@ -58,148 +104,4 @@ void rt_hw_board_init()
T0TCR = 0x01; //enable timer0 counter
}
-/******************************************************************************
-** Function name: TargetInit
-**
-** Descriptions: Initialize the target board; it is called in a necessary
-** place, change it as needed
-**
-** parameters: None
-** Returned value: None
-**
-******************************************************************************/
-void TargetInit(void)
-{
- /* Add your codes here */
- return;
-}
-
-/******************************************************************************
-** Function name: GPIOResetInit
-**
-** Descriptions: Initialize the target board before running the main()
-** function; User may change it as needed, but may not
-** deleted it.
-**
-** parameters: None
-** Returned value: None
-**
-******************************************************************************/
-void GPIOResetInit( void )
-{
- return;
-}
-
-/******************************************************************************
-** Function name: ConfigurePLL
-**
-** Descriptions: Configure PLL switching to main OSC instead of IRC
-** at power up and wake up from power down.
-** This routine is used in TargetResetInit() and those
-** examples using power down and wake up such as
-** USB suspend to resume, ethernet WOL, and power management
-** example
-** parameters: None
-** Returned value: None
-**
-******************************************************************************/
-void ConfigurePLL ( void )
-{
- unsigned long MValue, NValue;
-
- if ( PLLSTAT & (1 << 25) )
- {
- PLLCON = 1; /* Enable PLL, disconnected */
- PLLFEED = 0xaa;
- PLLFEED = 0x55;
- }
-
- PLLCON = 0; /* Disable PLL, disconnected */
- PLLFEED = 0xaa;
- PLLFEED = 0x55;
-
- SCS |= 0x20; /* Enable main OSC */
- while( !(SCS & 0x40) ); /* Wait until main OSC is usable */
-
- CLKSRCSEL = 0x1; /* select main OSC, 12MHz, as the PLL clock source */
-
- PLLCFG = PLL_MValue | (PLL_NValue << 16);
- PLLFEED = 0xaa;
- PLLFEED = 0x55;
-
- PLLCON = 1; /* Enable PLL, disconnected */
- PLLFEED = 0xaa;
- PLLFEED = 0x55;
-
- CCLKCFG = CCLKDivValue; /* Set clock divider */
-#if USE_USB
- USBCLKCFG = USBCLKDivValue; /* usbclk = 288 MHz/6 = 48 MHz */
-#endif
-
- while ( ((PLLSTAT & (1 << 26)) == 0) ); /* Check lock bit status */
-
- MValue = PLLSTAT & 0x00007FFF;
- NValue = (PLLSTAT & 0x00FF0000) >> 16;
- while ((MValue != PLL_MValue) && ( NValue != PLL_NValue) );
-
- PLLCON = 3; /* enable and connect */
- PLLFEED = 0xaa;
- PLLFEED = 0x55;
- while ( ((PLLSTAT & (1 << 25)) == 0) ); /* Check connect bit status */
- return;
-}
-
-/******************************************************************************
-** Function name: TargetResetInit
-**
-** Descriptions: Initialize the target board before running the main()
-** function; User may change it as needed, but may not
-** deleted it.
-**
-** parameters: None
-** Returned value: None
-**
-******************************************************************************/
-void TargetResetInit(void)
-{
- MEMMAP = 0x1; /* remap to internal flash */
-
-#if USE_USB
- PCONP |= 0x80000000; /* Turn On USB PCLK */
-#endif
- /* Configure PLL, switch from IRC to Main OSC */
- ConfigurePLL();
-
- /* Set system timers for each component */
-#if (Fpclk / (Fcclk / 4)) == 1
- PCLKSEL0 = 0x00000000; /* PCLK is 1/4 CCLK */
- PCLKSEL1 = 0x00000000;
-#endif
-#if (Fpclk / (Fcclk / 4)) == 2
- PCLKSEL0 = 0xAAAAAAAA; /* PCLK is 1/2 CCLK */
- PCLKSEL1 = 0xAAAAAAAA;
-#endif
-#if (Fpclk / (Fcclk / 4)) == 4
- PCLKSEL0 = 0x55555555; /* PCLK is the same as CCLK */
- PCLKSEL1 = 0x55555555;
-#endif
-
- /* Set memory accelerater module*/
- MAMCR = 0;
-#if Fcclk < 20000000
- MAMTIM = 1;
-#else
-#if Fcclk < 40000000
- MAMTIM = 2;
-#else
- MAMTIM = 3;
-#endif
-#endif
- MAMCR = 2;
-
- GPIOResetInit();
-
- return;
-}
-
/*@}*/
diff --git a/bsp/lpc2478/startup.c b/bsp/lpc2478/startup.c
index 289d97b7b9..2ea112c8e0 100644
--- a/bsp/lpc2478/startup.c
+++ b/bsp/lpc2478/startup.c
@@ -5,15 +5,20 @@
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
- * http://openlab.rt-thread.com/license/LICENSE
+ * http://www.rt-thread.org/license/LICENSE
*
* Change Logs:
* Date Author Notes
* 2008-12-11 xuxinming first version
*/
-#include <rtthread.h>
#include <rthw.h>
+#include <rtthread.h>
+
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+extern void finsh_system_init(void);
+#endif
#include <LPC24xx.h>
#include <board.h>
@@ -23,46 +28,36 @@
*/
/*@{*/
-#ifdef __CC_ARM
-extern int Image$$RW_IRAM1$$ZI$$Limit;
-#else
-extern char __rodata_start[];
-extern char __rodata_end[];
-extern char __data_start[];
-extern char __bss_start[];
-extern char __data_end[];
-extern char __bss_end[];
-extern char __Heap_start[];
-extern char __Heap_end[];
+extern int rt_application_init(void);
+#ifdef RT_USING_DEVICE
+extern rt_err_t rt_hw_serial_init(void);
#endif
-#ifdef RT_USING_FINSH
-extern void finsh_system_init(void);
-#endif
-extern int rt_application_init(void);
+#ifdef __CC_ARM
+extern int Image$$RW_IRAM1$$ZI$$Limit;
+#else
+extern int __bss_end;
+#endif
/**
* This function will startup RT-Thread RTOS.
*/
void rtthread_startup(void)
{
- /* init hardware Target */
- // TargetResetInit();
-
/* init hardware interrupt */
rt_hw_interrupt_init();
/* init board */
rt_hw_board_init();
- rt_show_version();
-
/* init tick */
rt_system_tick_init();
/* init kernel object */
rt_system_object_init();
+ rt_show_version();
+
/* init timer system */
rt_system_timer_init();
@@ -71,22 +66,27 @@ void rtthread_startup(void)
#ifdef __CC_ARM
rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)0x40010000);
#else
- rt_system_heap_init((void*)__Heap_start, 0x40010000);
+ rt_system_heap_init((void*)&__bss_end, (void*)0x40010000);
#endif
#endif
/* init scheduler system */
rt_system_scheduler_init();
+#ifdef RT_USING_DEVICE
+ /* init hardware serial device */
+ rt_hw_serial_init();
+
+ /*init all registed devices*/
+ rt_device_init_all();
+#endif
/* init application */
rt_application_init();
#ifdef RT_USING_FINSH
- /* init the finsh input */
- rt_hw_finsh_init();
-
/* init finsh */
finsh_system_init();
+ finsh_set_device("uart1");
#endif
/* init idle thread */
@@ -102,6 +102,7 @@ void rtthread_startup(void)
#ifdef __CC_ARM
int main(void)
{
+ /* invoke rtthread_startup */
rtthread_startup();
return 0;
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-30 14:19:07 +0000