cs-midi-docs/docs/examples/03-interfaces/06-applemidi.md

AppleMIDI (RTP-MIDI over WiFi)

RTP-MIDI over WiFi — appears as a Bonjour MIDI device in macOS Audio MIDI Setup, Windows rtpMIDI, and iOS. Requires WiFi connection before Control_Surface.begin().

Build with CS_MIDI_APPLEMIDI=ON.

Reliability note: AppleMIDI is implemented via the vendored lathoub/Arduino-AppleMIDI-Library with a LwIPUDP adapter wrapping the lwIP raw UDP API and mDNS/Bonjour service advertisement. The protocol implementation is complete and the device does appear in Audio MIDI Setup, but in our testing the session would not reliably establish on at least one macOS host. We suspect this is device-specific — your mileage may vary. If you have success (or failure) on your setup, reports are welcome.

#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include <cs_midi.h>

using namespace cs;

AppleMIDI_Interface midi {"PicoW-MIDI", 5004};

NoteButton button {5, {MIDI_Notes::C[4], Channel_1}};
CCRotaryEncoder enc {{0, 2}, {16, Channel_1}, 1, 4};

int main() {
    stdio_init_all();
    if (cyw43_arch_init()) return 1;

    cyw43_arch_enable_sta_mode();
    cyw43_arch_wifi_connect_blocking("SSID", "PASS", CYW43_AUTH_WPA2_AES_PSK);

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