Add LIS3DH and I2C support to LIS2DW

[Wulfsta]

This adds the LIS3DH accelerometer, and brings support for I2C to the LIS2DW. This branch also contains a documentation commit for these changes, a commit allowing the hardware I2C speed on atsamd chips to achieve fast-mode, and an addition to the sample configuration for the Duet3D 1LC. I am personally only able to test the LIS3DH over I2C.

Actions required:

• LIS2DW over SPI regression testing
• LIS2DW over I2C tests
• LIS3DH over SPI tests
• LIS3DH over I2C tests

Previous PRs related to this functionality: #6638 #6477

Tagging @KevinOConnor for possible LIS2DW regression testing, @dmbutyugin for possible LIS3DH SPI testing, and @eamaclean for the atsamd change.

[KevinOConnor]

Thanks. In general it seems useful. I have some comments - see below.

I don't own a lis2dw sensor, so I can't help with testing.

Note that @nefelim4ag is working on i2c error handling in PR #6689, and I think this PR should come after that work.

Cheers,
-Kevin

[KevinOConnor]

Thanks. Looks fine to me. As before, I think this should wait until after #6689.

-Kevin

[Wulfsta]

As before, I think this should wait until after #6689.

I’ll await for that change to get merged before refactoring and reaching out to the community for testers.

[KevinOConnor]

FYI, #6689 was merged.

-Kevin

[Wulfsta]

This should be ready to request testers. I am not too worried about testing the lis2dw over I2C, as long as the other three possibilities get tested.

[Wulfsta]

Whoops, was scrolling and closed by accident.

[Wulfsta]

Thanks to @dmbutyugin, the LIS3DH has been confirmed to work over SPI! Once I have a regression tester for the LIS2DW over SPI, I believe all branches would be covered by manual tests, and this would be safe to merge.

[Wulfsta]

Thanks to @Kcdc3d, the LIS2DW has been tested over SPI!

@KevinOConnor this should be safe to merge.

[KevinOConnor]

Thanks.

-Kevin