Add MIDI CC variables and CC input handler

[okyeron]

• add MIDI CC variables to globals
• adds CC input handler
• changes arcade knob CC values to match output from combos

Changes to allow for remote control of knob/combos from any MIDI controller. I've built example controllers in Max and TouchOSC - which we could add to the repo somewhere if wanted.

I do have a minor concern that the CC map is controllers 0-14 - as some of these are "dedicated" controls like Bank Select* or ModWheel - or that CC 7 is usually Volume, but volume is CC 5 on zeptocore.

Can these mappings change?

* I'd like to add a bank/patch select via MIDI and this would usually be CC 0 + CC 32

[schollz]

@okyeron yeah I'd be totally fine if you want to change the mappings!

[okyeron]

@okyeron yeah I'd be totally fine if you want to change the mappings!

Any thoughts on where to start from? 12 through 31 are more or less undefined
https://midi.org/midi-1-0-control-change-messages

[schollz]

I don't really have an opinion, 12 to 31 are reasonable

[okyeron]

excellent - does the web interface expect anything from the current CC assignments?

suggested changes: (put volume on 7 as thats standard, skip 17 for no good reason)

const uint8_t cc_knobx = 12;
const uint8_t cc_knoby= 13;
const uint8_t cc_knobz = 14;
const uint8_t cc_tempo = 15;
const uint8_t cc_pitch = 16;
const uint8_t cc_volume = 7;
const uint8_t cc_randsequence = 18;
const uint8_t cc_djfilter = 19;
const uint8_t cc_bassvolume = 20;
const uint8_t cc_sampleselect = 21;
const uint8_t cc_randtunnel = 22;
const uint8_t cc_quantize = 23;
const uint8_t cc_randjump = 24;
const uint8_t cc_randfx = 25;
const uint8_t cc_randfxbank = 26;

[okyeron]

Updated to the CC map above.

WIP ZeptoControl Max patch if you wanna test the CC feature
ZeptoControl.maxpat.zip

[schollz]

looks good!

[okyeron]

heya - what's the status here? Did something else need to be done to get this merged?

[schollz]

hm not sure why this was closed, let me pull it in another way

[schollz]

@okyeron could you link me to the commit on your repo for this change? this reop has been rebased so its all messed up.

[okyeron]

Here's the history (i believe):
https://github.com/okyeron/_core/commits/MIDI-CCs/

last commit was this:
okyeron@06831d1

[schollz]

added in #785