Posted on June 07, 2017 at 14:23Hi,
I am using STML053C8 controller.
In my application i am using RTC periodic wakeup interrupt for waking up every 1 sec.But the interrupt occurs only for the first time and then the wakeup enable bit & wakeup interrupt enable bit gets reset. also the auto reload counter gets set to 0x0000ffff. i have initialised the rtc as follows:
void RTC_Init_1sec()
{
//Initialize RTC Only
hrtc.Instance = RTC;
hrtc.Init.AsynchPrediv = 127;
hrtc.Init.SynchPrediv = 255;
hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
HAL_RTC_Init(&hrtc);
//Enable the WakeUp
HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 2048, RTC_WAKEUPCLOCK_RTCCLK_DIV16); for 1 sec
HAL_NVIC_SetPriority(RTC_IRQn,3,0);
HAL_NVIC_EnableIRQ(RTC_IRQn);
}
To add, i have been successful with RTC periodic wakeup interrupt using the above RTC initialization for my another application using STML052K8.
awaiting for the suggestions.
thanks
unnati
