Make USB MIDI interface names customizable - #9146

I guess that makes sense. I was able to implement this method, but there is a lot of repeated code for each argument. What would be an idiomatic approach for getting rid of the repetitions?

I guess that makes sense. I was able to implement this method, but there is a lot of repeated code for each argument. What would be an idiomatic approach for getting rid of the repetitions?

You could just factor the repeated code into a static helper routine that takes two arguments, the input name and where to put it.

I tried to do that, but failed. CircuitPython will always fall back to the default values. I guess something is wrong with all this pointer magic, but I have no clue how to properly debug the code.

I am recovering the ae9197b1604b6fc27b89f64e1f00cfb4c3f492c4 change before the refactoring I requested, and will try to fix this up on your fork branch.

I touched up the last commit so it works, touch up the documentation, and also fixed a build overflow problem.

test boot.py:

import usb_midi
usb_midi.set_names(streaming_interface_name="new_streaming_interface_name", audio_control_interface_name="new_audio_control_interface_name", in_jack_name="new_in_jack_name", out_jack_name="new_out_jack_name")

Testing the name setting:

$ sudo lsusb -vd 239a:80f2 | egrep 'iJack|iInterface'
      iInterface              4 CircuitPython CDC control
      iInterface              5 CircuitPython CDC data
      iInterface              6 CircuitPython Mass Storage
      iInterface              7 CircuitPython HID
      iInterface              9 new_audio_control_interface_name
      iInterface              8 new_streaming_interface_name
        iJack                  10 new_in_jack_name
        iJack                   0 
        iJack                  11 new_out_jack_name
        iJack                   0 

Thank you for the assistance and the quick feedback on this PR!