first commit

platformio.ini

@@ -7,6 +7,10 @@ lib_deps =
   Adafruit TinyUSB Library
   # MIDI
   https://github.com/FortySevenEffects/arduino_midi_library
+  # Button debounce
+  thomasfredericks/Bounce2@^2.72
+
+
 
 [env:raspberrypi-pico]
 ; See https://arduino-pico.readthedocs.io/en/latest/platformio.html

src/main.cpp

@@ -1,40 +1,53 @@
-#include <Arduino.h>
 #include <Adafruit_TinyUSB.h>
+#include <Arduino.h>
 #include <MIDI.h>
 
+#include <Bounce2.h>
+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;
+
+constexpr auto PIN = SUSTAIN_PIN;
+constexpr auto PIN_MODE = INPUT_PULLUP;
+constexpr auto INTERVAL_IN_MS = 5;
+
 // USB MIDI object
 Adafruit_USBD_MIDI usbMidi;
 MIDI_CREATE_INSTANCE(Adafruit_USBD_MIDI, usbMidi, MIDI);
 
+static bool toggle_state1 = false;
+
+void handle_sustain() {
+  sustainPedal1.update();
+
+  if (sustainPedal1.pressed()) {
+
+    if (toggle_state1) {
+      MIDI.sendNoteOn(MIDI_NOTE, MIDI_VELOCITY, TO_CHANNEL);
+    } else {
+      MIDI.sendNoteOff(MIDI_NOTE, 0, TO_CHANNEL);
+    }
+
+    toggle_state1 = !toggle_state1;
+  }
+}
+
 void setup() {
   Serial.begin(115200);
-  Serial.println("Hello World!");
 
   TinyUSBDevice.setManufacturerDescriptor("MadsKjeldgaard");
-  TinyUSBDevice.setProductDescriptor("Pico Blinkity Blinky");
+  TinyUSBDevice.setProductDescriptor("Sustain2Midi");
 
   usbMidi.begin();
   MIDI.begin();
 
-  pinMode(LED_BUILTIN, OUTPUT);
-  digitalWrite(LED_BUILTIN, 1);
+  // Setup button
+  sustainPedal1.attach(PIN, PIN_MODE);
+  sustainPedal1.interval(INTERVAL_IN_MS);
+  sustainPedal1.setPressedState(LOW);
 }
 
-auto pastLEDState = true;
-void loop() {
-  Serial.println("Hello from da loop!");
-
-  // Blink the LED
-  digitalWrite(LED_BUILTIN, static_cast<int>(pastLEDState));
-
-  // Send a midi note
-  if(pastLEDState){
-    MIDI.sendNoteOn(60, 127, 1);
-  } else {
-    MIDI.sendNoteOff(60, 0, 1);
-  }
-
-  pastLEDState = !pastLEDState;
-
-  delay(500);
-}
+void loop() { handle_sustain(); }