RTC timer is unstable in simulation

[jhl14]

Posted on July 08, 2016 at 13:13

Hi Team,

Use RTC as timer to restart STM32F030K6 from stop mode every 10mS, Set/Reset a dedicated I/O to show stop and running duration respectively in main loop like following procedure.  while(1){ if( RTC_Refresh_TimeOn ) { RTC_Refresh_TimeOn = 0; ... HAL_DBGMCU_EnableDBGStopMode(); HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI); HAL_DBGMCU_DisableDBGStopMode(); EnablePLL(); ... }}After burn the program or simulate the program, always got the I/O output pulse is not period, it is saying RTC is unstable. But when re-power the device, the I/O out wave is period.Can you give some suggestion?Best RegardsJHL 

[slimen]

Posted on July 11, 2016 at 16:54

Hi,

You can review RTC example under STM32CubeF0: STM32Cube_FW_F0_V1.6.0\Projects\STM32F030R8-Nucleo\Examples\RTC\RTC_AlarmIt will be better to compare your generated code with one of the provided RTC applications and identify what you have missed. Regards

[Walid FTITI_O]

Posted on July 12, 2016 at 17:05

Hi liu.jianhui,

I suggest to share the RTC configuration/initialization part from your code to try helping you. And what can of STM32 hardware you are using ? -Hannibal-

[jhl14]

Posted on July 13, 2016 at 09:43

Hi Hannibal,

After more verification of the issue, we found that RTC running is good when simulating with ST-Link. The issue occurs when using J-LINK. So wet wonder if there is some data setting of simulator affecting STM32F030 internal logic to get RTC unstable? Best Regards,JHL

[Tesla DeLorean]

Posted on July 13, 2016 at 11:40

Assume interaction on SWD of debugger is NOT instant, and it might take several, or ten, milliseconds.