timer.c

s3c44b0功能测试源码

#include <string.h>
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\timer.h"


void __irq Wdt_Int(void);

volatile int isWdtInt;

/****************************************
 *	Watch-dog timer test		*
 ****************************************/
void Test_WDTimer(void)
{
    Uart_Printf("WatchDog Timer Test:\n\n");
    rINTMSK=~(BIT_GLOBAL|BIT_WDT);
    pISR_WDT=(unsigned)Wdt_Int;
    isWdtInt=0;
	
    rWTCON=((MCLK/1000000-1)<<8)|(3<<3)|(1<<2);  // Prescaler Value=MCLK/1000000-1,Clock Select=1/128, interrupt enable
    rWTDAT=8448/2;
    rWTCNT=8448/2;
    rWTCON=rWTCON|(1<<5);   //  Watchdog Timer enable
    while(isWdtInt!=10);

    rWTCON=((MCLK/1000000-1)<<8)|(3<<3)|(1);  // reset enable
    Uart_Printf("\nI will restart after 3 sec!!!\n");
    rWTCNT=8448*3;
    rWTCON=rWTCON|(1<<5);   // Watchdog Timer enable 
    while(1);
    rINTMSK|=BIT_GLOBAL;
}

void __irq Wdt_Int(void)
{
    rI_ISPC=BIT_WDT;
    Uart_Printf("%d ",++isWdtInt);
}