Add PCNT HIL test

[Dominaezzz]

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Submission Checklist 📝

• I have updated existing examples or added new ones (if applicable).
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Pull Request Details 📖

Description

Adds a single HIL test for the PCNT peripheral.
I was planning to write more tests but the PCNT driver is bit difficult to use, it asks for too much config upfront and lacks reasonable defaults. I'm writing a PR to make improvements to the API and it'll come with more HIL tests.

For my SPI DMA move API changes, I figured it'd be handy to write some half duplex HIL tests to help verify my changes.
For half duplex writes, I figured the PCNT peripheral would be handy to count the mosi movements.
Before writing the half duplex tests, I figured having some simple PCNT tests to begin with would be best for my sanity.

No changelog for HIL tests

Testing

CI

[bjoernQ]

Awesome! More test coverage is great

[bjoernQ]

For half duplex writes, I figured the PCNT peripheral would be handy to count the mosi movements.

Good idea. I thought about using RMT to implement such a test. I also tried to come up with a bit-banged I2C master test but that is a bit tricky - probably should try a little harder 😄

[JurajSadel]

LGTM, thanks!