diff options
| -rw-r--r-- | platforms/chibios/drivers/vendor/RP/RP2040/serial_vendor.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/platforms/chibios/drivers/vendor/RP/RP2040/serial_vendor.c b/platforms/chibios/drivers/vendor/RP/RP2040/serial_vendor.c index afd7e65ad8..dd4723a086 100644 --- a/platforms/chibios/drivers/vendor/RP/RP2040/serial_vendor.c +++ b/platforms/chibios/drivers/vendor/RP/RP2040/serial_vendor.c @@ -181,12 +181,13 @@ static inline void leave_rx_state(void) {} #endif /** - * @brief Clear the RX and TX hardware FIFOs of the state machines. + * @brief Clear the FIFO of the RX state machine. */ inline void serial_transport_driver_clear(void) { osalSysLock(); - pio_sm_clear_fifos(pio, rx_state_machine); - pio_sm_clear_fifos(pio, tx_state_machine); + while (!pio_sm_is_rx_fifo_empty(pio, rx_state_machine)) { + pio_sm_clear_fifos(pio, rx_state_machine); + } osalSysUnlock(); } |