Question
STM32WB15 immediately jumps out of standby mode after entering
Hi together,
I am trying to enter standby mode on my stm32wb15 during ble application using the following code:
void UTIL_SEQ_PreIdle( void )
{
if(Custom_App_Context.current_state == APP_SLEEP_STATE){
HAL_SuspendTick();
if( (LL_PWR_IsActiveFlag_C1SB() == 0) || (LL_PWR_IsActiveFlag_C2SB() == 0))
{
/* Set the lowest low-power mode for CPU2: shutdown mode */
LL_C2_PWR_SetPowerMode(LL_PWR_MODE_SHUTDOWN);
}
/* Disable all used wakeup sources*/
HAL_RTCEx_DeactivateWakeUpTimer(&hrtc);
/* Clear all related wakeup flags */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
/* Enter the Standby mode */
HAL_PWR_EnterSTANDBYMode();
/* Program should never reach this point */
Error_Handler();
}
}The problem is like mentioned above that the mcu immediately jumps to main() after HAL_PWR_EnterSTANDBYMode(); . At this point the application has already cancelled advertising. What do i have to do?
Unfortunately the recommended way of entering low power modes, which is using the lpm module has not worked for me because when I change CFG_LPM_STANDBY_SUPPORTED to one, in CubeMX, my code is generated faulty. For example PWR_EnterOffMode() in stm32_lpm_if.c calls CPUcontextSave(); which is defined nowhere.
So both ways aren't working for me. What should I have to do?
Thank you in advance:smiling_face_with_smiling_eyes:
Regards,
Robert