Hello everyone, I'm using RTC on board NUCLEO-L053R8, so I have some problems. How do I connect a battery in this board? I know that if I want save my battery lifetime I have to put my microcontroler in a mode as StopMode, but how can I do that when ...

I'm using the STM32l053R8Tx, I configured the board NUCLEO-l053R8 by STM32CubeMX and I transmitted a data for an EEPROM with the function HAL_SPI_Transmit(...); and I'm trying receive the data with this function HAL_SPI_Receive(...); but I only recei...