MIDI processing (mido) of QuNexus poly pressure for control of Behringer Neutron wave-morphing

qunexus_neutron.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Sep  7 20:13:16 2019

@author: Pete Midi
"""
# basic code for "Neutron goes HydraSynth: poly pressure wave-morphing special" (https://www.youtube.com/channel/PeteMidi)
import mido

outputs = mido.get_output_names()
inputs = mido.get_input_names()

msg_ctrl = mido.Message('control_change', control=2, value=0, channel=1) # mido channel 0..15 -> midi channel 1..16 !!

# qunexus & neutron are both connected via USB MIDI 
# works for port names under linux (names on windows / mac os may be different ...) 
port_out_neutron = mido.open_output([s for s in outputs if s.startswith('Neutron')][0]) 
port_out_qunexus = mido.open_output([s for s in outputs if s.startswith('QuNexus')][2]) 
port_in_qunexus = mido.open_input([s for s in inputs if s.startswith('QuNexus')][0]) 

split_note = 60 # C3
stop_note = 36 # C1

while True:
    for msg in port_in_qunexus.iter_pending():
        if msg.type == 'note_on' or msg.type == 'note_off':     
            note = msg.note
            velo = msg.velocity
            port_out_neutron.send(msg)
        if msg.type == 'polytouch':
            note = msg.note
            press = msg.value
            msg_ctrl.value = 127 - press # inverse! (minimal pressure -> neutron sine wave) 
            if note < split_note:
                msg_ctrl.control = 2 # cc cv2 out (cc can be adjusted with qunexus editor)     
                port_out_qunexus.send(msg_ctrl)
            else:
                msg_ctrl.control = 3  # cc cv3 out (cc can be adjusted with qunexus editor)      
                port_out_qunexus.send(msg_ctrl)
          
            #  foot controller connected to qunexus -> neutron mod. wheel (filter cutoff freq)
            #        if msg.type == 'control_change' and msg.control == 1: 
            #            port_out_neutron.send(msg)
            #            msg.channel = 2
            #            port_out_neutron.send(msg)
            #            msg.channel = 1
            
    if note == stop_note and velo == 0: # stop script with particular 'out of range' note
        break
# close ports
port_out_neutron.send(mido.Message('control_change', control=123, value=0, channel=1)) # all notes OFF
port_out_neutron.close()
port_out_qunexus.close()
port_in_qunexus.close()