feat: Set midi note number

README.md

@@ -1,16 +1,14 @@
 [![PlatformIO CI](https://github.com/madskjeldgaard/raspberry-pi-pico-usbmidi-platformio-template/actions/workflows/build.yml/badge.svg)](https://github.com/madskjeldgaard/raspberry-pi-pico-usbmidi-platformio-template/actions/workflows/build.yml)
 
-# Raspberry Pi Pico platformio template
+# Sustain2Midi
 
-This is a simple template for creating an Arduino-based project for the Raspberry Pi Pico using platformio.
+This project is a simple Sustain pedal to midi note converter based on a raspberry pi pico board.
 
-It includes a simple example of using USB midi in this environment to easily create midi controllers from the Pico.
+## Features
 
-Also, it's set up to use c++17 instead of the default c++11 version.
-
-The advantage of working with the Pico like this is that you are able to use it like any other Arduino enabled board basically. For more information, [see this link](https://arduino-pico.readthedocs.io/en/latest/index.html).
-
-Best of all though? You can upload to the board without having to plug/unplug the device while pressing the boot button.
+- Dirt cheap (all you need is a mono jack socket and a raspberry pi pico)
+- Sends note on/off
+- Note number can be changed easily by sending a midi note to the device.
 
 ## Dependencies
 

src/main.cpp

@@ -6,7 +6,6 @@
 Bounce2::Button sustainPedal1 = Bounce2::Button();
 
 constexpr auto SUSTAIN_PIN = 0;
-constexpr auto MIDI_NOTE = 48;
 constexpr auto MIDI_VELOCITY = 127;
 constexpr auto TO_CHANNEL = 1;
 
@@ -19,22 +18,35 @@ Adafruit_USBD_MIDI usbMidi;
 MIDI_CREATE_INSTANCE(Adafruit_USBD_MIDI, usbMidi, MIDI);
 
 static bool toggle_state1 = false;
+static int output_note = 48; // Default output note
 
 void handle_sustain() {
   sustainPedal1.update();
 
   if (sustainPedal1.pressed()) {
 
     if (toggle_state1) {
-      MIDI.sendNoteOn(MIDI_NOTE, MIDI_VELOCITY, TO_CHANNEL);
+      MIDI.sendNoteOn(output_note, MIDI_VELOCITY, TO_CHANNEL);
     } else {
-      MIDI.sendNoteOff(MIDI_NOTE, 0, TO_CHANNEL);
+      MIDI.sendNoteOff(output_note, 0, TO_CHANNEL);
     }
 
     toggle_state1 = !toggle_state1;
   }
 }
 
+void handle_midi_note_on(byte channel, byte note, byte velocity) {
+
+  // Send note off and reset toggle state before changing note
+
+  if (toggle_state1) {
+    MIDI.sendNoteOff(output_note, 0, TO_CHANNEL);
+  }
+
+  toggle_state1 = false;
+  output_note = note;
+}
+
 void setup() {
   Serial.begin(115200);
 
@@ -44,10 +56,16 @@ void setup() {
   usbMidi.begin();
   MIDI.begin();
 
+  // Set the MIDI note on handling function
+  MIDI.setHandleNoteOn(handle_midi_note_on);
+
   // Setup button
   sustainPedal1.attach(PIN, PIN_MODE);
   sustainPedal1.interval(INTERVAL_IN_MS);
   sustainPedal1.setPressedState(LOW);
 }
 
-void loop() { handle_sustain(); }
+void loop() {
+  handle_sustain();
+  MIDI.read(); // Add this line to read incoming MIDI messages
+}