cs-midi-docs/docs/manual/02-midi/05-midi-over-usb.md

MIDI over USB

Original: MIDI over USB

USB MIDI uses TinyUSB to present the device as a standard USB MIDI class-compliant device. No drivers needed on macOS, Windows, or Linux.

Setup

Enable in CMake:

set(CS_MIDI_USB ON)

Your project needs two additional files:

• tusb_config.h — TinyUSB configuration
• usb_descriptors.c — USB device/configuration/string descriptors

Reference copies are in lib/cs-midi/templates/.

Usage

#include "pico/stdlib.h"
#include <cs_midi.h>

using namespace cs;

USBMIDI_Interface midi;

NoteButton button {5, {MIDI_Notes::C[4], Channel_1}};

int main() {
    stdio_init_all();
    Control_Surface.begin();
    while (true) {
        Control_Surface.loop();
        sleep_ms(1);
    }
}

No cyw43_arch_init() needed for USB-only configurations.

Combining with BLE

Enable both CS_MIDI_BLE and CS_MIDI_USB, then route between them:

BluetoothMIDI_Interface ble;
USBMIDI_Interface usb;
BidirectionalMIDI_PipeFactory<1> pipes;
// In main: ble | pipes | usb;