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[Bug] RP2040: only clear RX FIFO for serial pio driver clear (#18581)

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This commit is contained in:
Stefan Kerkmann
2022-10-04 20:56:40 +02:00
committed by GitHub
parent 56f7b34289
commit b6ea8837e4
1 changed files with 4 additions and 3 deletions
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5
platforms/chibios/drivers/vendor/RP/RP2040/serial_vendor.c vendored
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@@ -181,12 +181,13 @@ static inline void leave_rx_state(void) {}
#endif #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) { inline void serial_transport_driver_clear(void) {
osalSysLock(); osalSysLock();
while (!pio_sm_is_rx_fifo_empty(pio, rx_state_machine)) {
pio_sm_clear_fifos(pio, rx_state_machine); pio_sm_clear_fifos(pio, rx_state_machine);
pio_sm_clear_fifos(pio, tx_state_machine); }
osalSysUnlock(); osalSysUnlock();
} }