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Revise the Raspberry Pi Pico sample implementation #10

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dgoffredo
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I'm using the SCD41 with a Raspberry Pi Pico W, and used this repository's sample implementation as a starting point.

The code in sample-implementations/RaspberryPi_Pico/ has several shortcomings that I aim to correct in this pull request:

  • Rename CMakeLists.txt to have the proper casing.
  • Refer to source and header files relative to the example's directory.
  • Fix syntax errors in main.c.
  • Fix bugs in main.c.
  • Add logging.
  • Add documentation.

This is my first time contributing to this project, so I'm happy to make any changes requested.

@LeonieFierz
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Dear @dgoffredo

thank you for your pull request and sorry for not getting back earlier to you. Your updates to the Pi Pico sample look good. As we just updated the driver, changing some of the sensor API, it would be nice to update the example to the new version.

If you are ok, I could push those changes on top of your pull request. As I do not have a Raspi Pi Pico at hand, would you be able to test the changes afterwards on the Pi Pico?

Best, Léonie

@LeonieFierz LeonieFierz self-assigned this Feb 3, 2025
@dgoffredo
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If you are ok, I could push those changes on top of your pull request. As I do not have a Raspi Pi Pico at hand, would you be able to test the changes afterwards on the Pi Pico?

Yes, go ahead. Then I will test the changes and propose any necessary modifications.

dgoffredo and others added 6 commits February 4, 2025 11:18
- Don't read from an uninitiailized boolean variable.
- Pull up the SCL and SDA pins used for I2C.
- Use sleep_us for higher precision in the HAL.
- Add error logging.
- Increase precision of reported measurement data.
- Remove lengthy sensor self-test.
- Remove unused variables and functions.
- Address any -Wall -Wextra warnings.
update main.c to changed sensor API,
initiaize driver with i2c address,
update signature for sensirion_i2c_hal_read/write
@LeonieFierz
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@dgoffredo
I did update the Pull Request to the latest driver change. Please not that I had to rebase on the latest master and force-pushed.
It would be great if you can test the Pico sample implementation.
Thank you for your contribution!
Léonie

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2 participants