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Standby mode and rtc with STM32L

juergen23
Associate II

‎2014-09-05 04:07 AM

Posted on September 05, 2014 at 13:07

Hi,

i'm using the STM32L151 for a little project.

I use an external crystal for the rtc to show time and date in a display. If battery is low i want to save battery power, so in this case i activate the standby mode.

Problem: After wakeup all works fine, but the clock has lost the current date and time. In stop mode the controller is not making a reset to wakeup, so the clock is correct.

Is it possible to easily recover the date and time in case of a wakeup from standby?

Code is similar to this implementation: http://www.coocox.org/Show_Exam.php?id=365&comname=PWR

#rtc #stm32 #standby #stm32l
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sergio23
Associate II

‎2016-04-15 03:10 AM

Posted on April 15, 2016 at 12:10

Hi,

I have a similar problem. Did you get fix up?

Can you tell me how did you solve it?

Thank you

Carmen

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