How do I unlock and write to the GPIOx->LCKR register so I can reconfigure GPIOx pins?
I'm trying wean myself off the STM HAL library and learn how to program peripherals at the register level. I'm starting with UART1 on a STM32H7A3. UART1 with Alternate Function 7 has TX on GPIOB pin 6 and RX on GPIOB pin 7. So I think I need to se...