diff options
| -rw-r--r-- | ports/rp2/machine_uart.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/ports/rp2/machine_uart.c b/ports/rp2/machine_uart.c index 283c12ed54..0642f704f7 100644 --- a/ports/rp2/machine_uart.c +++ b/ports/rp2/machine_uart.c @@ -109,10 +109,10 @@ STATIC const char *_invert_name[] = {"None", "INV_TX", "INV_RX", "INV_TX|INV_RX" /******************************************************************************/ // IRQ and buffer handling -// take all bytes from the fifo and store them, if possible, in the buffer +// take all bytes from the fifo and store them in the buffer STATIC void uart_drain_rx_fifo(machine_uart_obj_t *self) { - while (uart_is_readable(self->uart)) { - // try to write the data, ignore the fail + while (uart_is_readable(self->uart) && ringbuf_free(&self->read_buffer) > 0) { + // get a byte from uart and put into the buffer ringbuf_put(&(self->read_buffer), uart_get_hw(self->uart)->dr); } } |