实验了6410看门狗裸机中断

1、startup.s

    INCLUDE     s3c6410.inc
    INCLUDE     image_cfg.inc
    INCLUDE     MemParam_mDDR.inc

    IMPORT      xmain                    ; C entrypoint for Steppingstone loader.
    PRESERVE8
   AREA Init, CODE, READONLY
   ENTRY
        mrc p15,0,r0,c1,c0,0
        orr r0,r0,#(1<<24)
        mcr p15,0,r0,c1,c0,0
                        
        b        xmain
        END

2、main.c
#include "s3c6410_addr.h"
#include "interrupt.h"
#include "utils.h"

static volatile long count = 1;
void __irq watchdog_isr(void)
{
    Uart_Printf("watchdog interrupt is occurred %d times\n", count);
    count++;
    rWTCLRINT &= 0x1;//一定要注意要清楚中断
    INTC_ClearVectAddr();
}

void watchdog_test(void)
{
    INTC_SetIntISR(INT_WDT, watchdog_isr);
    rWTCON = (100 << 8) | (3 << 3);
    rWTDAT = 5000;
    rWTCNT = 5000;
    rWTCON &= ~(3);
    rWTCON |= (1 << 5) | (1 << 2);
    INTC_Enable(INT_WDT);
    while(1);
}

void xmain(void)
{
    Uart_Init();
    Uart_Printf("watchdog testing\n");
    watchdog_test();
}

不明白文件组织的请看我的另一个贴子：http://www.aiothome.net/read.php?tid-12309.html

谢谢楼主分享