How does UART work without the HAL layer ? Does the shift register clear itself once it has transmitted its data ? And what's the timing I need to have ?
Some context, I'm using a RS485 data line in half-duplex mode to communicate between an STM32F107 (the master card here) and an STM32F072 (the slave card). My end goal is to be able to use the bootloader on the slave card and reprogram it from the ma...