basic ST support

[ericmorelle]

I added some basic support for the ST (after checking out the first attempt by @r3w0p) .
Also I have seen that someone requested support for the ST-UV, but I only have a ST-VIS, so not shure if it works for both.

I also had a try on inspecting the USB communication with wireshark and was able to figure out the nonlinearity coefficients.
Maybe with some help I can do more features. If needed I could provide what i get out of wireshark.

[ap--]

Awesome ❤️
Thank you so much for your contribution!

Please fix the linting errors and then I'll merge this right away!

pip install pre-commit
pre-commit install
pre-commit run --all
# and then fix / stage and commit the changes

Cheers,
Andreas 😃

[ap--]

Also, can you confirm that the pytest test suite runs without errors, when the ST spectrometer is connected?

[ericmorelle]

Thank for the quick reply. I'm happy that I can contribute something.
The linting errors should be fixed now.
The pytest test suite runs without failures but with two skips:

• tests/test_spectrometers.py::TestHardware::test_crash_may_not_influence_following_tests[ST:ST00610-backend(any)] SKIPPED (FIXME: TEST BREAKS OTHER TESTS ON WINDOWS)
• tests/test_spectrometers.py::TestHardware::test_correct_dark_pixels[ST:ST00610-backend(any)] SKIPPED (does not support dark counts)

first is obviously because i'm on windows at the moment, I tried it on linux a few days ago and as far as I remember it passed there.

second claims that dark counts are not supported. As far as I know it is supported in some way, but for now I couldn't figure it out or identify the dark_pixel_indices

[ap--]

second claims that dark counts are not supported. As far as I know it is supported in some way, but for now I couldn't figure it out or identify the dark_pixel_indices

The way to do this, would be to compare readings of the spectrometer when fully illuminated with a broad spectrum light source and when light is fully blocked. The dark pixels should not change their reading when illuminated