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drivers: serial: nrf_sw_lpuart: Fix case of flushing RX FIFO #27571

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Merged
rlubos merged 1 commit into from
May 26, 2026
Merged

drivers: serial: nrf_sw_lpuart: Fix case of flushing RX FIFO #27571

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2 changes: 2 additions & 0 deletions doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -409,6 +409,8 @@ Drivers

This section provides detailed lists of changes by :ref:`driver <drivers>`.

* Fixed an issue where the low power UART may fail after a reset if the reset occurs during transmission.

Wi-Fi drivers
-------------

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2 changes: 1 addition & 1 deletion drivers/serial/uart_nrf_sw_lpuart.c
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Expand Up @@ -992,7 +992,7 @@ static void api_irq_rx_enable(const struct device *dev)
struct lpuart_data *data = get_dev_data(dev);

data->int_driven.rx_enabled = true;
if (int_driven_rd_available(data)) {
if (int_driven_rd_available(data) || data->rx_state == RX_BLOCKED) {
/* We need to move to the interrupt context of the same priority as UARTE. */
k_timer_start(&data->int_driven.trampoline_timer, K_NO_WAIT, K_NO_WAIT);
}
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