Is it possible to have both USB and serial MIDI?

[diyelectromusic]

Hello,

I'd like to have both USB MIDI and serial MIDI enabled and active, but from looking at the code in mt32pi.cpp (CMT32::updateMIDI) I don't believe it is currently possible.

In my case, I'm looking at the option of having a "program change" device to choose the voice using the serial port on the RPi whilst using a USB keyboard for note input.

I appreciate that without an intelligent MIDI merge then it could be possible to get corrupted MIDI messages, but wondered if this could be a "use at your own risk" option?

Thanks for MT32-Pi, I'm having a great time playing around with it! :)

Many Thanks,
Kevin

[dwhinham]

Hi Kevin!

It's not currently possible but it's something I want to add alongside the ability to "route" MIDI between things, e.g. USB in --> synths and GPIO out.

I agree with your take on the MIDI merging - the onus will just have to be on the user to not do crazy things. 🙂 That said, there could be a separate MIDI parsing state machine for each input which would ensure that individual bytes don't get mixed and only complete, independant messages go to the synths. Not sure now important/useful that will be - something to think about.

I'm currently working on networked MIDI (AppleMIDI/RTP-MIDI) so this is sortof in the same area and will get looked at together - stay tuned.

Thanks for your interest in mt32-pi! Your blog posts were also excellent and I appreciate you covering the project.

Cheers,
-Dale

[diyelectromusic]

I love my MT-32 Pi :) I need to have a go a building from source then I might be able to give something back myself! But that is a little way down the "to do" list at present :)

I look forward to hearing about your progress.

Best wishes,
Kevin