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tests: drivers: uart: uart_pm: Minor adjustments in the test

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Modifying arbitrary delay to cover for receivers with timeout.
Adding a delay between polling and asynchronous checking to cover
for cases when CPU processing is fast enough so that both checks
may overlap.
Allow error code for uart_rx_disable call.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruściński 2024-04-08 17:36:41 +02:00 • committed by Fabio Baltieri
commit 3424c7af7f
1 changed files with 11 additions and 2 deletions
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13
tests/drivers/uart/uart_pm/src/main.c
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@ -34,7 +34,10 @@ static void polling_verify(const struct device *dev, bool is_async, bool active)
for (int i = 0; i < ARRAY_SIZE(outs); i++) {
uart_poll_out(dev, outs[i]);
k_busy_wait(1000);
/* We need to wait until receiver gets the data. Receiver may have
* RX timeout so data is not received instantly.
*/
k_busy_wait(5000);
if (active) {
err = uart_poll_in(dev, &c);
@ -78,6 +81,12 @@ static bool async_verify(const struct device *dev, bool active)
zassert_equal(err, 0, "Unexpected err: %d", err);
/* Wait a bit to ensure that polling transfer is already finished otherwise
* receiver might be enabled when there is an ongoing transfer and bytes
* will get corrupted.
*/
k_busy_wait(1000);
if (!DISABLED_RX) {
err = uart_rx_enable(dev, rxbuf, sizeof(rxbuf), 1 * USEC_PER_MSEC);
zassert_equal(err, 0, "Unexpected err: %d", err);
@ -90,7 +99,7 @@ static bool async_verify(const struct device *dev, bool active)
if (!DISABLED_RX) {
err = uart_rx_disable(dev);
zassert_equal(err, 0, "Unexpected err: %d", err);
zassert_true((err == 0) || (err == -EFAULT));
k_busy_wait(10000);