tests/periph/uart: minor improvements #21009
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Contribution description
The UART self-test using a TX-RX-loop fails on
master
. Luckily it's not a bug in the UART driver, but just a timing issue betweenuart_write
returning and the HW triggering the RX callback. This PR fixes the test by adding a 1ms delay between TX and RX buffer check.While at it, I also improved the error handling and reporting in the test.
Testing procedure
make -C tests/periph/uart BOARD=nrf52840dk flash term
, thentest 1
fails onmaster
and succeeds with these changes.Issues/PRs references
Encountered while testing for #20980