GPIO UART(S) dropping characters
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 25/100
- Issue type
- Bug
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- linux, raspberry-pi
- Domain
- embedded-iot
Research direction
No source files, tests, or entry points are named. Start by reviewing the linked forum post and reproducing the reported character loss at 19200 baud on full Raspbian versus Lite, including the GPU-memory setting; done means the cause is identified and characters are no longer dropped in the affected configuration.
Written by the indexing model from the issue text.
Description
Later versions of Raspbian (around 4.14.34-v7+ and beyond) seem to drop received characters from the serial uart, approx 4 characters every second or two @ 19200 baud. LITE version has NO PROBLEMS, problems show up only on full desktop versions. Dropping to 16 meg of GPU memory or below seems to solve the problem as well. More details at this post:
https://www.raspberrypi.org/forums/viewtopic.php?t=217702
Thank you!
- Dominant language
- No language data
- Stars
- 5.6k
- Forks
- 1.7k
- PR merge metrics
- No merged PRs in 30d
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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