Hello MPrud.1,I agree with you. Due to the Read-Modify-Write (RMW) sequence in HAL_RTC_WaitForSynchro function, it can also clear accidentally flags which arrive after the READ.I will internally suggest to remove the AND combination: hrtc->Instance->...

Hello Chris,have you activated the internal pull-up resistors of the GPIO ports?On the STM32WB55 Nucleo Board, the push buttons are connected to the GPIOs without any additional external circuitry, i.e. without external pull-up resistors.So that the ...