Use Emulation to Run RP2 PIO Code on Other Ports
Nobody has claimed this yet.
Assessment
- Difficulty
- 5/5
- Estimated time
- Over a week
- Newbie friendliness
- 25/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- python
- Domain
- embedded-iot, testing-qa
Research direction
Start by reviewing the rp2.StateMachine interface and the rp2040-pio-emulator package named in the issue. Determine the compatibility surface and how the Unix port could exercise PIO test cases. Done means a usable API-compatible emulation library is available for those tests.
Written by the indexing model from the issue text.
Description
The RP2 chip's PIO peripheral is a powerful piece of hardware capable of performing tasks that might otherwise require very fast bit-banging code, but it's also quite difficult to validate the correctness of a complicated PIO program as this code can then "only" be run on real hardware.
I'm planning to implement a library that's API-compatible with the rp2.StateMachine interface, to allow other ports to run PIO programs via emulation. I don't know if this can ever allow practical real-time I/O on any of the microcontroller ports; my primary use-case is to enable using the unix port to run test cases involving PIO functionality.
Given that initial goal, I intend to implement this by wrapping the rp2040-pio-emulator python package. A later stab at this idea might re-implement it in C later, if someone can figure out a path to doing this in real-time on microcontroller hardware.
- Dominant language
- Python
- Stars
- 2.9k
- Forks
- 1.1k
- Avg merge
- 7d 6h
- Merged PRs (30d)
- 3
Contributor guide
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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