8 button USB MIDI footswitch

First off, see the git here for code and more information:
https://github.com/hunked/eightbuttonMIDIfootswitch

This is an eight button MIDI footswitch that sends data over USB and regular 5-pin MIDI port at the same time.

Currently there are 6 modes of operation selectable at boot. The selection screen can be returned to at any time by resetting the unit or pressing buttons 4 + 8 (top and bottom on the right side) together simultaneously.

1. MIDI Note Timed (on note sent on button press, off note sent after a preset time)
2. MIDI Note Toggle (press button once to turn on, press again to turn off)
3. MIDI CC Timed (same as mode 1 but with CC messages)
4. MIDI CC Toggle (same as mode 2 but with CC)
5. Program Change (pressing each of the 8 buttons sends a different Program Change message)
8. Settings Menu (change channels, MIDI messages, default options)

If you do not choose an option the footswitch will start the default (mode 1) after a set timeout (6 seconds).

Yo