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uart: nrfx_uarte: Return error when re-enabling RX

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Driver was not behaving according to API description and
was not returning -EBUSY when uart_rx_enable() was called
on already enabled receiver.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2021-12-22 12:11:34 +01:00 • committed by Carles Cufí
commit 11bbdb030d
1 changed files with 4 additions and 0 deletions
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4
drivers/serial/uart_nrfx_uarte.c
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@ -853,6 +853,10 @@ static int uarte_nrfx_rx_enable(const struct device *dev, uint8_t *buf,
return -ENOTSUP;
}
if (data->async->rx_enabled) {
return -EBUSY;
}
data->async->rx_timeout = timeout;
/* Set minimum interval to 3 RTC ticks. 3 is used due to RTC limitation
* which cannot set timeout for next tick. Assuming delay in processing