I have Rack Pro and can’t seem to get the the MIDI CC → CV module to process CC messages from a MIDI Controller when using the DAW plugin (VST) in Ableton Live. Any cable I hook up to a module output emits 10V, no matter what, and is unresponsive to the MIDI controller (I tried a MIDI Fighter Twister and a 16n). The same exact patch in a non-VST context works fine with my MIDI controllers.
Is this a known issue (couldn’t find anything in search) or am I doing something wrong?
Maybe your VST host has exclusive use of the midi device?
Not sure what you mean by this. I don’t have any other instances of VCV Rack open and no other software is using the MIDI devices.
I’m using Ableton Live on a 2022 Mac Studio with MacOS Monterey.
The patch I’ve attached as a screenshot works as expected in regular (non-VST) Rack Pro, but the exact same patch is unresponsive to any MIDI CC messages from the CC->CV module in Rack VST.
If I use Configure and Ableton’s MIDI Map, my MIDI Devices can control knobs fine in Rack VST (see 2nd screenshot).
UPDATE: Just tested and found the Midi Map module (part of VCV Core) also won’t map MIDI CC messages in Rack VST.
Unless someone can explain why I shouldn’t expect these modules to map cc messages in Rack VST, I’m going to file a bug report through the proper channels.
VST parameter mapping is something else - it uses 0.0 - 1.0 floating point numbers (32bit ?) for the parameters.
Midi CC’s are only 0-127 integer values. Both on the physical midi in/out - and the midi CC channel in the VST implementation. (excluding 14 bit CC+32 / RPN / NRPN)
What does not seem to work, is using a midi device (not the DAW) in the VST - if this is by design or a bug, I don’t know. I barely remember if we were promised that the VST could use external midi and audio devices early in the Rack2 development process. I’m not sure of the status on all platforms and DAW’s
The VST parameter mapping seems to work fine though for what I originally wanted from the CC>CV module. I just want to control a knob with my controller, so I can map the knob value directly to the VST parameter and get the same effect as running a cable from CC>CV (if it worked in Rack VST the way it does in non-VST Rack).