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Urgent : Anybody having example source code for watchdog timer

Hi friends,

I am using AT91SAM7SE256 processor.
Tool : Keil

i am using the watchdog timer interrupt for my application.
I am unable to initialize the watch dog timer in interrupt mode.

Anybody is having an idea about this or having the example source code for watchdog timer?

should i enable or disable the watchdog in the startup code configuration wizard?

Please help me to solve this problem?

thanks,
with regards,
Murthy.R

Parents

0 Murthy r over 17 years ago in reply to ImPer Westermark

Hi,

Thanks for your reply.

i am using the watchdog timer as a interrupt.

i have enabled the watchdog timer interrupt and i restart it every 1 second,otherwise i will get a interrupt in 5 seconds.

My problem is

By using this code i am getting a watchdog interrupt in every 5 seconds.
1. Once i receive the watchdog interrupt i want to disable the watch dog interrupt.
2. How to disable this interrupt?

Please advise me on this.

This is my code

void watchdog_irq_handler(void)__irq
{

        printf("watchdog interrupt");
        *AT91C_AIC_EOICR = 0;                              // End of Interrupt

}

void watchdog_init ( void )
{
        int i=0;
        i = AT91F_WDTGetPeriod(5000);

        AT91C_BASE_WDTC->WDTC_WDMR  = AT91C_WDTC_WDFIEN  | i | (i-0)<<16;

        AT91C_BASE_AIC->AIC_SMR[AT91C_ID_SYS] = 3;
        AT91C_BASE_AIC->AIC_SVR[AT91C_ID_SYS] = (unsigned long) watchdog_irq_handler;
        AT91C_BASE_AIC->AIC_IECR = (1 << AT91C_ID_SYS);
}



/*------------------------Main Program--------------------------------------------*/
int main (void)
{
        unsigned int i=0;
        DBGU_init();
        watchdog_init();

        while(1)
        {
                printf("\n\rmain\n\r");
                delay_1ms(1000);
                //AT91F_WDTRestart(AT91C_BASE_WDTC);       /**Restart the watchdog timer/
        }
}

with regards,
Murthy.R

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