Launchpad X support

[wvengen]

It would be great if the Launchpad X (manual, programmer's reference manual) would be supported out of the box.

One part would be a ctlr file.

But there's something else: when pressing the Session key (in Live mode), nothing seems to happen. It looks like the Launchpad X expects something to be sent back before it enters the Session mode.

Related: #19, #79.

[wvengen]

[wvengen]

After manually sending the SysEx command, one can use the following ctrl file. Mixer mode doesn't work yet, (I wonder if it needs a daemon to switch to it, or if my SysEx is wrong): launchpad_x.ctlr.txt (and a script to generate it).

[wvengen]

I created Luppp patches (in this repo) to:

• allow sending midi message on connect, which gets the Launchpad X session mode working out of the box (ctlr below)
• patch to send volume changes (pending: sending all fader values on connect) but not echo them back to the controller (so gradual changes work), works with the daemon (below) to handle the Launchpad X fader mode (this would not require midi messages on connect, as the daemon does it too, but that feature may be useful for other controllers as well)

launchpad_x.ctlr.txt (controller file)
gen_launchpad_x.py.txt (python script to generate the controller file)
daemon.py.txt (daemon to handle fader mode)

[harryhaaren]

Hi @wvengen - awesome work - thanks for the PRs! I've merge the Ninja build version fix - so Travis should provide good results now. Re-running the "Add MIDI Connect" PR travis gives some errors on missing includes (jack_port_t undeclared). After a quick review - I'd be happy to merge once Travis etc are happy. Regards, -Harry

[wvengen]

Thanks @harryhaaren! Looking forward to your review - if you agree with the approach, I'll polish them up (like making echo work for more actions, rebase for CI fix).

[wvengen]

To use the four mixers on the Launchpad X, you can use https://github.com/wvengen/lpx-controller
Together with #310 and this ctlr it allows one to control Luppp volume/pan/sends.

With this program, #311 isn't needed, but #311 is still useful for using the Launchpad X without another program to run in the background.