de-init check

hierophect · hierophect · commit 14b70806a5aa · 2019-11-11T15:47:47.000-05:00
diff --git a/ports/stm32f4/common-hal/busio/UART.c b/ports/stm32f4/common-hal/busio/UART.c
@@ -312,6 +312,8 @@ bool common_hal_busio_uart_deinited(busio_uart_obj_t *self) {
 }
 
 void common_hal_busio_uart_deinit(busio_uart_obj_t *self) {
+    if(common_hal_busio_uart_deinited(self)) return;
+    
     reset_pin_number(self->tx->pin->port,self->tx->pin->number);
     reset_pin_number(self->rx->pin->port,self->rx->pin->number);
     self->tx = mp_const_none;

Original file line number	Diff line number	Diff line change
`@@ -312,6 +312,8 @@ bool common_hal_busio_uart_deinited(busio_uart_obj_t *self) {`
`312`	`312`	`}`
`313`	`313`
`314`	`314`	`void common_hal_busio_uart_deinit(busio_uart_obj_t *self) {`
	`315`	`+ if(common_hal_busio_uart_deinited(self)) return;`
	`316`	`+`
`315`	`317`	`reset_pin_number(self->tx->pin->port,self->tx->pin->number);`
`316`	`318`	`reset_pin_number(self->rx->pin->port,self->rx->pin->number);`
`317`	`319`	`self->tx = mp_const_none;`