stm32/uart: Simplify deinit of UART, no need to call HAL.
The HAL just clears UE and then clears all the UART control registers.
@@ -332,10 +332,10 @@ void uart_set_rxbuf(pyb_uart_obj_t *self, size_t len, void *buf) {
void uart_deinit(pyb_uart_obj_t *self) {
self->is_enabled = false;
- UART_HandleTypeDef huart;
- huart.Instance = self->uartx;
- HAL_UART_DeInit(&huart);
+ // Disable UART
+ self->uartx->CR1 &= ~USART_CR1_UE;
+ // Reset and turn off the UART peripheral
if (self->uart_id == 1) {
HAL_NVIC_DisableIRQ(USART1_IRQn);
__HAL_RCC_USART1_FORCE_RESET();
