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STM32F469I-DISCO standby mode RTC wake up immediately issue.

Question asked by Hank Lee on Feb 12, 2018
Latest reply on Feb 21, 2018 by Hank Lee

I used STM32F469I-DISCO and STM32F429I-DISCO to testing Standby mode function by PWR example(Attach). Standby mode function is no problem on STM32F429I-DISCO.  But in STM32F469I-DISCO , used RTC wake up form standby mode , first time is normal , but second time to into standby mode will wake up immediately. How can I fix it , thanks.

 

ps,  I already clear flag as below.

 

/*## Clear all related wakeup flags ########################################*/
/* Clear PWR wake up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);

/* Clear RTC Wake Up timer Flag */
__HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RTCHandle, RTC_FLAG_WUTF);

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