diff options
| -rw-r--r-- | stm/usart.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/stm/usart.c b/stm/usart.c index 6478f01152..78d9a0fee4 100644 --- a/stm/usart.c +++ b/stm/usart.c @@ -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; } |