diff options
| -rw-r--r-- | ports/esp32/machine_uart.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/esp32/machine_uart.c b/ports/esp32/machine_uart.c index 06d9c0b0d..26cbc88fc 100644 --- a/ports/esp32/machine_uart.c +++ b/ports/esp32/machine_uart.c @@ -297,7 +297,7 @@ STATIC mp_uint_t machine_uart_read(mp_obj_t self_in, void *buf_in, mp_uint_t siz int bytes_read = uart_read_bytes(self->uart_num, buf_in, size, time_to_wait); - if (bytes_read < 0) { + if (bytes_read <= 0) { *errcode = MP_EAGAIN; return MP_STREAM_ERROR; } |