Stuck in RTC_EnterInitMode

[DS.4]

After connecting to a X-NUCLEO-LPM01A board for power consumption test , RTC init will not end.

Stuck in this while loop:

  tickstart = HAL_GetTick();
    /* Wait till RTC is in INIT state and if Time out is reached exit */
    while ((hrtc->Instance->ISR & RTC_ISR_INITF) == 0U)
    {
      if ((HAL_GetTick()  - tickstart) > RTC_TIMEOUT_VALUE)
      {
        return HAL_TIMEOUT;
      }
    }

 Current solution: I have to program some example using stm32wbIDE, only that fixes it and I can now use my FW.

[STea]

Hello @DS.4 ,

Make sure the RTC APB clock is enabled by checking the RTCAPBEN bit field , this could be due to some missing steps in the configuration of RTC and its clock source . This is just a guess if this does not resolve your issue i need further details on your configuration to help you solve this problem.

BR 

[DS.4]

I will check that, 

Weird thing is even after aligning my init process to that of the example, it still won't work.

I still have to program the example and later my code.

[DS.4]

Please see attached system viewer, RTCAPBEN is EN

[STea]

Hello @DS.4 ,

Note that The RTC Initialization mode is write protected,you need to  use 

__HAL_RTC_WRITEPROTECTION_DISABLE() before calling this function.

BR

[DS.4]

Thanks, but I am actually doing that, ( the HAL is doing that for me to be precise)

i haven't changed the HAL functions, and using HAL_RTC_Init as is.

Any other flags that might be of help?