watchdog.c

三星s3c2460开发板完整功能测试代码

//================================================
// Watch-dog timer Interrupt Request Test
// Watchdog.c 24a0A
//================================================

#include <stdio.h>

#include "option.h"
#include "2460addr.h"
#include "2460lib.h"
#include "watchdog.h"
#include "PLL.h"

volatile int isWdtInt;

void Ch11_WDT_Test(void)
{
    rINTSUBMSK  &= ~(BIT_SUB_WDT);           
    rINTMSK  &= ~(BIT_TIMER34_WDT); //Watch dog Interrupt service is available
    
     
    pISR_TIMER34_WDT= (unsigned )Wdt_Batflt_Int;
    isWdtInt = 0;

    rWTCON = 0; // wdt reset & interrupt disable
    rWTCON   = ((PCLK/1000000-1)<<8) | (3<<3) | (1<<2); //Prescaler=0x2a(42),Clock division 128,Interrupt enable
    rWTDAT   = 7813 ;          
    rWTCNT   = 7813 ;
    rWTCON   = rWTCON | (1<<5);   //Watch-dog timer enable

	printf("[ WDT Reset Test]\n");
    printf("WDT Reset after wdt interrupt happened 5 times. \n");	   

	while(isWdtInt != 5); // variable
 
    // WDT reset enable
    rWTCON = ((PCLK/1000000-1)<<8) |( 1<<5) | (3<<3) | (1);  
    rINTSUBMSK |= BIT_SUB_WDT;
    rINTMSK |= BIT_TIMER34_WDT;         //WDT Interrupt Mask
}

//---------------------------------------------------------------------
void __irq Wdt_Batflt_Int(void)
{
    if(rSUBSRCPND & 0x100){
	rSUBSRCPND = BIT_SUB_WDT;
       printf("%d ",++isWdtInt);
    }
    ClearPending(BIT_TIMER34_WDT);
}