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Fix USB MIDI: use Adafruit TinyUSB Library for proper MIDI support

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- Add Adafruit TinyUSB Library dependency
- Create tusb_config.h enabling MIDI class
- USB device named 'Loopy Foot Controller'
- is_connected() check before sending
This commit is contained in:
Ashley Strahle
2026-06-23 13:10:25 +00:00
parent 4d81386f78
commit 987288fd41
4 changed files with 100 additions and 66 deletions
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src/midi_transport.cpp
+74 -64
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@@ -1,8 +1,8 @@
#include "midi_transport.h"
#include <Arduino.h>
#include <USBMIDI.h>
#include "Adafruit_TinyUSB.h"
static USBMIDI MIDI;
static Adafruit_USBD_MIDI usb_midi;
UsbMidiTransport::UsbMidiTransport() : initialized(false) {
}
@@ -11,95 +11,105 @@ UsbMidiTransport::~UsbMidiTransport() {
}
bool UsbMidiTransport::begin() {
MIDI.begin(MIDI_CHANNEL_OMNI);
Serial.println("[MIDI] Initializing USB MIDI...");
USBDevice.setManufacturerDescriptor("Ashley Strahle");
USBDevice.setProductDescriptor("Loopy Foot Controller");
USBDevice.setSerialDescriptor("LFMIDI001");
if (!usb_midi.begin(32)) {
Serial.println("[MIDI] ERROR: USB MIDI init failed");
return false;
}
USB.begin();
initialized = true;
Serial.println("[MIDI] USB MIDI initialized (ArduinoUSBMIDI)");
Serial.println("[MIDI] USB MIDI initialized - waiting for host");
return true;
}
void UsbMidiTransport::update() {
if (!initialized) return;
MIDI.read();
while (usb_midi.available()) {
uint8_t packet[4];
if (usb_midi.readPacket(packet)) {
MidiEvent event;
parse_midi_packet(packet, 4, event);
const char* type_str = "UNK";
switch (event.type) {
case MidiEvent::NOTE_ON: type_str = "NOTE_ON"; break;
case MidiEvent::NOTE_OFF: type_str = "NOTE_OFF"; break;
case MidiEvent::CONTROL_CHANGE: type_str = "CC"; break;
case MidiEvent::PROGRAM_CHANGE: type_str = "PC"; break;
case MidiEvent::PITCH_BEND: type_str = "PB"; break;
default: break;
}
Serial.printf("[MIDI IN] Ch:%d %s:%d:%d\n", event.channel, type_str, event.data1, event.data2);
if (receive_callback) {
receive_callback(event);
}
}
}
}
void UsbMidiTransport::on_midi_receive(std::function<void(const MidiEvent&)> callback) {
receive_callback = callback;
MIDI.setHandleNoteOn([this](uint8_t channel, uint8_t note, uint8_t velocity) {
MidiEvent event;
event.type = (velocity > 0) ? MidiEvent::NOTE_ON : MidiEvent::NOTE_OFF;
event.channel = channel;
event.data1 = note;
event.data2 = velocity;
event.timestamp = millis();
Serial.printf("[MIDI IN] Ch:%d NOTE_ON:%d:%d\n", channel, note, velocity);
if (receive_callback) receive_callback(event);
});
MIDI.setHandleNoteOff([this](uint8_t channel, uint8_t note, uint8_t velocity) {
MidiEvent event;
event.type = MidiEvent::NOTE_OFF;
event.channel = channel;
event.data1 = note;
event.data2 = velocity;
event.timestamp = millis();
Serial.printf("[MIDI IN] Ch:%d NOTE_OFF:%d:%d\n", channel, note, velocity);
if (receive_callback) receive_callback(event);
});
MIDI.setHandleControlChange([this](uint8_t channel, uint8_t cc, uint8_t value) {
MidiEvent event;
event.type = MidiEvent::CONTROL_CHANGE;
event.channel = channel;
event.data1 = cc;
event.data2 = value;
event.timestamp = millis();
Serial.printf("[MIDI IN] Ch:%d CC:%d:%d\n", channel, cc, value);
if (receive_callback) receive_callback(event);
});
MIDI.setHandleProgramChange([this](uint8_t channel, uint8_t program) {
MidiEvent event;
event.type = MidiEvent::PROGRAM_CHANGE;
event.channel = channel;
event.data1 = program;
event.data2 = 0;
event.timestamp = millis();
Serial.printf("[MIDI IN] Ch:%d PC:%d\n", channel, program);
if (receive_callback) receive_callback(event);
});
MIDI.setHandlePitchBend([this](uint8_t channel, int bend) {
MidiEvent event;
event.type = MidiEvent::PITCH_BEND;
event.channel = channel;
event.data1 = bend & 0x7F;
event.data2 = (bend >> 7) & 0x7F;
event.timestamp = millis();
Serial.printf("[MIDI IN] Ch:%d PB:%d\n", channel, bend);
if (receive_callback) receive_callback(event);
});
}
void UsbMidiTransport::send_note_on(uint8_t channel, uint8_t note, uint8_t velocity) {
if (!initialized) return;
MIDI.sendNoteOn(note, velocity, channel);
usb_midi.sendNoteOn(note, velocity, channel);
Serial.printf("[MIDI OUT] Ch:%d NOTE_ON:%d:%d\n", channel, note, velocity);
}
void UsbMidiTransport::send_note_off(uint8_t channel, uint8_t note, uint8_t velocity) {
if (!initialized) return;
MIDI.sendNoteOff(note, velocity, channel);
usb_midi.sendNoteOff(note, velocity, channel);
Serial.printf("[MIDI OUT] Ch:%d NOTE_OFF:%d:%d\n", channel, note, velocity);
}
void UsbMidiTransport::send_cc(uint8_t channel, uint8_t cc, uint8_t value) {
if (!initialized) return;
MIDI.sendControlChange(cc, value, channel);
usb_midi.sendControlChange(cc, value, channel);
Serial.printf("[MIDI OUT] Ch:%d CC:%d:%d\n", channel, cc, value);
}
bool UsbMidiTransport::is_connected() {
return initialized;
return initialized && usb_midi.isMounted();
}
void UsbMidiTransport::parse_midi_packet(const uint8_t* buffer, uint32_t size, MidiEvent& event) {
if (size < 4) return;
uint8_t cin = buffer[0] & 0x0F;
uint8_t status = buffer[1];
uint8_t type = status & 0xF0;
uint8_t channel = (status & 0x0F) + 1;
event.channel = channel;
event.data1 = buffer[2];
event.data2 = buffer[3];
switch (cin) {
case 0x8: event.type = MidiEvent::NOTE_OFF; break;
case 0x9:
event.type = (event.data2 > 0) ? MidiEvent::NOTE_ON : MidiEvent::NOTE_OFF;
break;
case 0xB: event.type = MidiEvent::CONTROL_CHANGE; break;
case 0xC: event.type = MidiEvent::PROGRAM_CHANGE; break;
case 0xE: event.type = MidiEvent::PITCH_BEND; break;
default:
switch (type) {
case 0x80: event.type = MidiEvent::NOTE_OFF; break;
case 0x90: event.type = (event.data2 > 0) ? MidiEvent::NOTE_ON : MidiEvent::NOTE_OFF; break;
case 0xB0: event.type = MidiEvent::CONTROL_CHANGE; break;
case 0xC0: event.type = MidiEvent::PROGRAM_CHANGE; break;
case 0xE0: event.type = MidiEvent::PITCH_BEND; break;
default: event.type = MidiEvent::NOTE_ON; break;
}
break;
}
}