I need to design the board that uses STM32L496RG, is able to do some operations, but if needed it has to be able to have FW updated “remotely”. The idea is that the board with the MCU is enclosed, but the access to it would be via some socket (not decided what type yet) in another area.
How can I achieve it if to update the FW I need to change the state of BOOT pins?
So far the idea is to use the RS485 wire, and than the RS485->UART converter but I have no idea how to make it.