19680642352
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Ran 25 Nov 2025 06:51PM UTC

Jobs 2

Files 136

Run time 1min

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Committed 25 Nov 2025 06:50PM UTC coverage: 56.701%. Remained the same

Build # 19680642352

Build Type

push

github

Committed by

web-flow

Commit Message

pbio/drv/uart: Fix slow SUART on short messages.

This changes two items about the SUART driver:

1. The FIFO trigger level is set to 8 bytes rather than 15.
   This is to reduce the likelihood that we might not be able to
   drain the fifo before it fills up (e.g. if we are already processing
   some other interrupt and for whatever reason it takes too long).
2. The SUART FIFO timeout is decreased from ~10ms to ~100us.
   This means that if the FIFO is not empty, it will fire an interrupt
   after about 100us, causing us to drain it. This prevents consumers
   from having to wait as long for a short message to be received.

Tested by running a simple torture test script a few times.

Fixes https://github.com/pybricks/support/issues/2456

Co-authored-by: David Lechner <david@pybricks.com>

Run Details

4523 of 7977 relevant lines covered (56.7%)

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Jobs

ID	Job ID	Ran	Files	Coverage
1	PBIO - 19680642352.1	25 Nov 2025 06:54PM UTC	74	66.1	GitHub Action Run
2	virtualhub - 19680642352.2	25 Nov 2025 06:51PM UTC	114	45.78	GitHub Action Run

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