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drivers: nrf: uarte: rx flush amount calculation

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The NRF UARTE has an undocumented feature that when you flush the RX
FIFO, the RXAMOUNT register is not cleared to zero if the FIFO is in
fact empty. This fix is correcting something that was most likely a
typo.

Signed-off-by: Petri Oksanen <petri@iote.ai>
This commit is contained in:
Petri Oksanen 2021-03-25 16:18:56 +02:00 • committed by Carles Cufí
commit 4c88abcf7f
1 changed files with 1 additions and 1 deletions
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2
drivers/serial/uart_nrfx_uarte.c
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@ -1155,7 +1155,7 @@ static uint8_t rx_flush(const struct device *dev, uint8_t *buf, uint32_t len)
return rx_amount; return rx_amount;
} }
for (int i = 0; i < 0; i++) { for (int i = 0; i < flush_len; i++) {
if (buf[i] != dirty) { if (buf[i] != dirty) {
return rx_amount; return rx_amount;
} }