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WDT Test


WDT Test.

Toolkit:STM Development System

Location:/bipom/devtools/STM32/examples/usd_api

Code Example


static void vRTCTEST( void *pvParameters )
{
	(void) pvParameters;
	ULONG h,m,s,prevTime=0xFFFFFFFF;
	volatile ULONG time;
	int isWdtReload = 30;
	//

	while(1) 
	{
		// Wait for the next second

		while(1)
		{
			time = RTC_Get();
			if(prevTime == time)	vTaskDelay(10);
			else					break;
		}
		//

		prevTime = time;
		//

		if (23*3600+59*60+59 < time ) 
		{
			RTC_Set(0);
			tprintf("\n\rSetTime->00:00:00");
			prevTime = time = 0;
		}
		/* Reload IWDG counter */
    	if(isWdtReload) 
    	{
    		WDT_Reset();
    		/* Decrement 'isWdtReload' to execute IWDG reset finally */
    		isWdtReload--; 
    	}
    	else tprintf("\n\rWait for Reset...");
    	
		
		//

   		h = time  3600;
  		m = (time % 3600)  60;
  		s = (time % 3600) % 60;
		tprintf("\n\rTime: %02d:%02d:%02d", h, m, s);
	}
}

//********************************************************************************

int main(void) 
{
	tprintf("\n\rMini-Max/STM32F1");
	tprintf("\n\rWDT TEST REV 1.01");
	
	// Print RESET source

	tprintf("\n\rRESET: ");
	if (RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET)
    {
		tprintf("<Power On> ");
    }
    if (RCC_GetFlagStatus(RCC_FLAG_PINRST) != RESET)
    {
		tprintf("<External> ");
    }
	if (RCC_GetFlagStatus(RCC_FLAG_IWDGRST) != RESET)
	{
   		tprintf("<Independent Watchdog> ");
	}
	if (RCC_GetFlagStatus(RCC_FLAG_WWDGRST) != RESET)
	{
   		tprintf("<Window Watchdog> ");
	}
	if (RCC_GetFlagStatus(RCC_FLAG_LPWRRST) != RESET)
	{
   		tprintf("<Software> ");
	}
	if (RCC_GetFlagStatus(RCC_FLAG_SFTRST) != RESET)
	{
   		tprintf("<Low Power> ");
	}
	/* Clear reset flags */
    RCC_ClearFlag();
	// Initialize RTC 

	// if RTC_Init returns SUCCESS the RTC is still running with correct time

	// Otherwise RTC is reset to 00:00:00 

	// If this occurs set time to 23:59:45

	if(SUCCESS != RTC_Init()) RTC_Set(23*3600+59*60+45);
	//	

	// Initialize WDT to 3 seconds ( MAX VALUE is 26 seconds)

	WDT_Init(3);
	/* Check if the system has resumed from IWDG reset */
  	if(pdPASS != 
		xTaskCreate (vRTCTEST, ( const signed portCHAR * const )"RTCTEST", 
			configMINIMAL_STACK_SIZE<<4, NULL, tskIDLE_PRIORITY, NULL ))
	{
		tprintf("\n\rERROR: can't create RTCCTEST task");
	}
	/* Now all the tasks have been started - start the scheduler. */
	vTaskStartScheduler();
	for(;;);
	return 0;
}