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drivers: nrf: uarte: check if RXSTARTED before issue STOPRX

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Only issue STOPRX is RX has started.
This prevents getting stuck in while loop.

Signed-off-by: Ryan Erickson <ryan.erickson@lairdconnect.com>
This commit is contained in:
Ryan Erickson 2020-04-15 14:06:17 -05:00 • committed by Carles Cufí
commit 6243557e5f
1 changed files with 8 additions and 4 deletions
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6
drivers/serial/uart_nrfx_uarte.c
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@ -1403,11 +1403,15 @@ static void uarte_nrfx_set_power_state(struct device *dev, u32_t new_state)
return;
}
#endif
if (nrf_uarte_event_check(uarte, NRF_UARTE_EVENT_RXSTARTED)) {
nrf_uarte_task_trigger(uarte, NRF_UARTE_TASK_STOPRX);
while (!nrf_uarte_event_check(uarte, NRF_UARTE_EVENT_RXTO)) {
while (!nrf_uarte_event_check(uarte,
NRF_UARTE_EVENT_RXTO)) {
/* Busy wait for event to register */
}
nrf_uarte_event_clear(uarte, NRF_UARTE_EVENT_RXSTARTED);
nrf_uarte_event_clear(uarte, NRF_UARTE_EVENT_RXTO);
}
nrf_uarte_disable(uarte);
uarte_nrfx_pins_enable(dev, false);
}