Need Help for Wakeup from standby STM32F107

dipti2 · ‎2010-09-03

Posted on September 03, 2010 at 10:09

damh · ‎2011-05-17

Posted on May 17, 2011 at 14:05

I suspect that the mcu woke up in your case.

Check the Wakeuppin (on stm32f103 PA0; on f107 P???). It have to be on GND-level. Otherwise RTC Alarm won't function at all!

If you want to use the Wakeuppin, you should check it before going to standby mode to be on GND level. There is an OR-gate behind the Wakeuppin (Wakeuppin and RTC alarm internal line are connected to this gate). If one of them is continuous high, you cannot wake up any more. Only exception should be the Watchdog, that can be enabled in standby mode.

It is a very awful feature 😉

dipti2 · ‎2011-05-17

Posted on May 17, 2011 at 14:05

Hey thanks for the response,

I also put the WKUP pin to ground. Yes, u are right the mcu wokeup as earlier.

My problem is the mcu behaviour after that. Should it not jump to the resethandler automatically after wakeup?

Thanks,

Dipti