Sim'n Tonic Forums

Short description of the issue: USB Midi

Setup (devices connected to the Midronome and how): macOS Sonoma on M1 mac, Midronome plugged in using USB

Steps to Reproduce: Simply try to use the USB forwarding interfaces MIDI Out 2, it does not forward, instead the USB-MIDI "Midi Out 2" acts like "Commands"

Expected Behavior: MIDI Out 2 messages are sent on the physical MIDI output #2

Actual Behavior: MIDI Out 2 messages are sent internally to MIDI Commands

Midronome firmware version: v2.0


This is a macOS bug, this works fine on Windows. It seems macOS does not like when a device has a different amount of input and outputs USB-MIDI interfaces (Firmware v2.0 has 3 INs and 2 OUTs).

This will be solved in Firmware v3.0 and up by adding extra input interfaces, ending with this configuration:

3 MIDI Outputs: (same as current)

• Commands
• MIDI Out 1
• MIDI Out 2

3 MIDI Inputs:

• Clock
• Module Itf 1
• Module Itf 2

Clock is the usual input where the clock is sent, as well as Start/Stop messages.
The two Module Itf X inputs will be used as forwarding interfaces when sending MIDI messages to a MIDI IN module for example, these messages will be forwarded there.

Let me know if you have any other ideas / suggestions

Cheers
Simon