No idea when this broke, but we weren't actually ever stopping the
synth on petal release.

This is a hotfix for the 1.0.0 release because otherwise the two demos
sound very, very broken.

Do not merge back into main!

The functionality has been distributed to:

 - kernel (hardware_version, freertos_sleep)
 - uctx (scope)
 - sys_buttons (new, low-level button access)
 - sys_display (new, low-level display access)

schneider authored 1 year ago and dx committed 1 year ago

No automatic switching of anything, just expose it to MP.

Closes #16

Would in theory allow for SignalInputTriggerPitch

Also:

- improved LED docs
- fixed the repr of the leds module
- fixed fix LED_POSITIONS in the sim

About the last point, the previous version was clockwise but not
starting from the top, but from the "first" LED according to the
hardware, which is ~11 LEDs after the one at the top. The C firmware
already adjusts for this.

Not fixed by this commit: Melodic demo (it's already a mess)

Didn't need changes: nick (now rotates clockwise)