Hi, I seem to be having some trouble getting the Arduino midi library to print correctly to the serial, I get random symbols appearing like this "⸮$⸮$ ⸮$⸮$ ⸮$⸮$ ⸮$⸮$ ⸮$⸮$" instead of the midi notes I want printing. Because of this I cant then connect to hairless Midi and then connect to Ableton. I did have this script working at one point and I haven't changed it since so I'm not sure why the serial is not working. I also have the serial set to a baud rate of 115200 which I need.
This is the code I'm using below, any help would be greatly appreciated thanks!!
> /*
Based on Sketch built by Gustavo Silveira (aka Music Nerd)
Modified by Dolce Wang
This code is only for Arduinos that use ATmega328 (like Uno, Mega, Nano, Beetle...)
*/
// Change values with //***
// LIBRARIES
#include <MIDI.h> // by Francois Best
MIDI_CREATE_DEFAULT_INSTANCE();
// BUTTONS
const int NButtons = 1; //*** total number of push buttons
const int buttonPin[NButtons] = {2,}; //*** define digital pins connected from button to Arduino; (ie {10, 16, 14, 15, 6, 7, 8, 9, 2, 3, 4, 5}; 12 buttons)
//** Button NOTE will go up chromatically. ie. if button is digi pin 2, C; Pin 3, C#; Pin 3, D; etc
int buttonCState[NButtons] = {}; // stores the button current value
int buttonPState[NButtons] = {}; // stores the button previous value
// debounce
unsigned long lastDebounceTime[NButtons] = {0}; // the last time the output pin was toggled
unsigned long debounceDelay = 50; //* the debounce time; increase if the output flickers
// POTENTIOMETERS
const int NPots = 1; //*** total numbers of pots (slide & rotary)
const int potPin[NPots] = {A0}; //*** Analog pins of each pot connected straight to the Arduino i.e 4 pots, {A3, A2, A1, A0};
// have nothing in the array if 0 pots {}
int potCState[NPots] = {0}; // Current state of the pot; delete 0 if 0 pots
int potPState[NPots] = {0}; // Previous state of the pot; delete 0 if 0 pots
int potVar = 0; // Difference between the current and previous state of the pot
int midiCState[NPots] = {0}; // Current state of the midi value; delete 0 if 0 pots
int midiPState[NPots] = {0}; // Previous state of the midi value; delete 0 if 0 pots
const int TIMEOUT = 300; //** Amount of time the potentiometer will be read after it exceeds the varThreshold
const int varThreshold = 10; //** Threshold for the potentiometer signal variation
boolean potMoving = true; // If the potentiometer is moving
unsigned long PTime[NPots] = {0}; // Previously stored time; delete 0 if 0 pots
unsigned long timer[NPots] = {0}; // Stores the time that has elapsed since the timer was reset; delete 0 if 0 pots
// MIDI
byte midiCh = 1; //** MIDI channel to be used; You can add more if you need to reorganize or have a billion buttons/pots
byte note = 36; //** First note to be used for digital buttons, then go up chromatically in scale according to the sequence in your "buttonPin" array
// you can look up on a Midi Note chart; 36=C2; 60=Middle C
byte cc = 1; //** First MIDI CC to be used for pots on Analog Pins in order of the "potPin" array; then goes up by 1
// SETUP
void setup() {
MIDI.begin();
Serial.begin(115200); //** Baud Rate 31250 for MIDI class compliant jack | 115200 for Hairless MIDI
// Buttons
// Initialize buttons with pull up resistors
for (int i = 0; i < NButtons; i++) {
pinMode(buttonPin[i], INPUT_PULLUP);
}
}
// LOOP
void loop() {
buttons();
potentiometers();
}
// BUTTONS
void buttons() {
for (int i = 0; i < NButtons; i++) {
buttonCState[i] = digitalRead(buttonPin[i]); // read pins from arduino
if ((millis() - lastDebounceTime[i]) > debounceDelay) {
if (buttonPState[i] != buttonCState[i]) {
lastDebounceTime[i] = millis();
if (buttonCState[i] == LOW) {
// Sends the MIDI note ON accordingly to the chosen board
MIDI.sendNoteOn(note + i, 127, midiCh); // note, velocity, channel
}
else {
// Sends the MIDI note OFF accordingly to the chosen board
MIDI.sendNoteOn(note + i, 0, midiCh); // note, velocity, channel
}
buttonPState[i] = buttonCState[i];
}
}
}
}
// POTENTIOMETERS
void potentiometers() {
for (int i = 0; i < NPots; i++) { // Loops through all the potentiometers
potCState[i] = analogRead(potPin[i]); // reads the pins from arduino
midiCState[i] = map(potCState[i], 0, 1023, 0, 127); // Maps the reading of the potCState to a value usable in midi
potVar = abs(potCState[i] - potPState[i]); // Calculates the absolute value between the difference between the current and previous state of the pot
if (potVar > varThreshold) { // Opens the gate if the potentiometer variation is greater than the threshold
PTime[i] = millis(); // Stores the previous time
}
timer[i] = millis() - PTime[i]; // Resets the timer 11000 - 11000 = 0ms
if (timer[i] < TIMEOUT) { // If the timer is less than the maximum allowed time it means that the potentiometer is still moving
potMoving = true;
}
else {
potMoving = false;
}
if (potMoving == true) { // If the potentiometer is still moving, send the change control
if (midiPState[i] != midiCState[i]) {
// Sends the MIDI CC
MIDI.sendControlChange(cc + i, midiCState[i], midiCh); // cc number, cc value, midi channel
potPState[i] = potCState[i]; // Stores the current reading of the potentiometer to compare with the next
midiPState[i] = midiCState[i];
}
}
}
}
