StackRduino
diff --git a/‎stm/usart.c‎
Lines changed: 4 additions & 2 deletions b/‎stm/usart.c‎
Lines changed: 4 additions & 2 deletions
@@ -205,8 +205,10 @@ static mp_obj_t usart_obj_rx_char(mp_obj_t self_in) {
 
 static mp_obj_t usart_obj_tx_char(mp_obj_t self_in, mp_obj_t c) {
     pyb_usart_obj_t *self = self_in;
-    if (self->is_enabled) {
-        usart_tx_char(self->usart_id, mp_obj_get_int(c));
+    uint len;
+    const char *str = mp_obj_str_get_data(c, &len);
+    if (len == 1 && self->is_enabled) {
+        usart_tx_char(self->usart_id, str[0]);
     }
     return mp_const_none;
 }
Original file line number	Diff line number	Diff line change
`@@ -205,8 +205,10 @@ static mp_obj_t usart_obj_rx_char(mp_obj_t self_in) {`
`205`	`205`
`206`	`206`	`static mp_obj_t usart_obj_tx_char(mp_obj_t self_in, mp_obj_t c) {`
`207`	`207`	`pyb_usart_obj_t *self = self_in;`
`208`		`- if (self->is_enabled) {`
`209`		`- usart_tx_char(self->usart_id, mp_obj_get_int(c));`
	`208`	`+ uint len;`
	`209`	`+ const char *str = mp_obj_str_get_data(c, &len);`
	`210`	`+ if (len == 1 && self->is_enabled) {`
	`211`	`+ usart_tx_char(self->usart_id, str[0]);`
`210`	`212`	`}`
`211`	`213`	`return mp_const_none;`
`212`	`214`	`}`