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| // Developed in Arduino IDE 1.8.13 (Windows)
#include <FastLED.h> // FastLED version 3.3.3 [url]https://github.com/FastLED/FastLED[/url]
#include "MIDIUSB.h" // MIDIUSB version 1.0.4 [url]https://www.arduino.cc/en/Reference/MIDIUSB[/url]
#define BUTTON_PIN1 3
#define BUTTON_PIN2 2
#define LED_ACT_PIN 4
#define LED_PIN 5
#define NUM_LEDS 144
#define LED_TYPE WS2812B
#define COLOR_ORDER GRB
#define AMPERAGE 1500 // Power supply amperage in mA
#define NOTE_OFFSET 29 // Offset of first note from left (depends on Piano)
#define LEDS_PER_NOTE 2 // How many LED are on per key
#define LED_INT_STEPS 8 // LED Intensity button steps
#define DEBUG
CRGB leds[NUM_LEDS];
byte color = 0xFFFFFF;
int ledProgram = 1;
int ledIntensity = 2; // default LED brightness
int ledBrightness = ceil(255 / LED_INT_STEPS * ledIntensity); // default LED brightness
int buttonState1;
int buttonState2;
int lastButtonState1 = LOW;
int lastButtonState2 = LOW;
unsigned long lastDebounceTime1 = 0;
unsigned long lastDebounceTime2 = 0;
unsigned long debounceDelay = 50;
//------------------------------------------- FUNCTIONS ----------------------------------------------//
const char* pitch_name(byte pitch) {
static const char* names[] = {"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"};
return names[pitch % 12];
}
int pitch_octave(byte pitch) {
return (pitch / 12) - 1;
}
void SetNote(byte pitch, CRGB color) {
int b = 0;
for (int a = 0; a < LEDS_PER_NOTE; a++) {
//if (int(pitch) > 66){b=1;}else{b=0;} // led stripe solder joints compensation
leds[(((pitch - NOTE_OFFSET)*LEDS_PER_NOTE)+ a - b)]= color;
}
}
void SetNote2(byte pitch, int hue) {
int b = 0;
for (int a = 0; a < LEDS_PER_NOTE; a++) {
//if (int(pitch) > 66){b=1;}else{b=0;} // led stripe solder joints compensation
leds[(((pitch - NOTE_OFFSET)*LEDS_PER_NOTE)+a - b)].setHSV(hue, 255, 255);
}
}
void noteOn(byte channel, byte pitch, byte velocity) {
if (velocity > 0) {
switch (channel) {
// Left Hand
case 144: // Default Channel is 144
case 155:
case 145 ... 149:
if (ledProgram == 1){
SetNote(pitch,0x0000FF);
}else if (ledProgram == 2){
SetNote(pitch,0x00FF00);
}else if (ledProgram == 3){
SetNote2(pitch,pitch*velocity);
}else if (ledProgram == 4){
SetNote2(pitch,velocity*2);
}else if (ledProgram == 5){
SetNote(pitch,0xFFFFFF);
}else if (ledProgram == 6){
SetNote2(pitch,ceil((pitch-NOTE_OFFSET) * (255/(NUM_LEDS/LEDS_PER_NOTE))));
}else{
}
break;
// Right Hand
case 156:
case 150 ... 154:
SetNote(pitch,0x00FF00);
break;
default:
SetNote(pitch,0xFFFFFF);
break;
}
if (DEBUG == true){ Serial.println("Note ON - Channel:" + String(channel) + " Pitch:" + String(pitch) + " Note:" + pitch_name(pitch) + String(pitch_octave(pitch)) + " Velocity:" + String(velocity)); }
}else{
SetNote(pitch,0x000000); // black
if (DEBUG == true){ Serial.println("Note OFF2 - Channel:" + String(channel) + " Pitch:" + String(pitch) + " Note:" + pitch_name(pitch) + String(pitch_octave(pitch)) + " Velocity:" + String(velocity)); }
}
FastLED.show();
}
void noteOff(byte channel, byte pitch, byte velocity) {
if (ledProgram == 5){
fill_rainbow( leds, NUM_LEDS, 0, 5);
}else{
SetNote(pitch,0x000000); // black
}
#ifdef DEBUG
Serial.print("Note OFF - Channel:");
Serial.print(String(channel));
Serial.print(" Pitch:");
Serial.print(String(pitch));
Serial.print(" Note:");
Serial.print(pitch_name(pitch) + String(pitch_octave(pitch)));
Serial.print(" Velocity:");
Serial.println(String(velocity));
#endif
FastLED.show();
}
void controlChange(byte channel, byte control, byte value) {
#ifdef DEBUG
Serial.print("Control - Channel:");
Serial.print(String(channel));
Serial.print(" Control:");
Serial.print(String(control));
Serial.print(" Value:");
Serial.println(String(value));
#endif
}
//-------------------------------------------- SETUP ----------------------------------------------//
void setup() {
#ifdef DEBUG
Serial.begin(115200);
#endif
delay( 3000 ); // power-up safety delay
FastLED.setMaxPowerInVoltsAndMilliamps(5, AMPERAGE);
pinMode(BUTTON_PIN1, INPUT_PULLUP);
pinMode(BUTTON_PIN2, INPUT_PULLUP);
pinMode(LED_ACT_PIN, OUTPUT);
FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
FastLED.setBrightness(ledBrightness);
fill_solid( leds, NUM_LEDS, CRGB(0,0,0));
SetNote(NOTE_OFFSET+ledProgram-1,0xFF0000);
FastLED.show();
#ifdef DEBUG
Serial.println("MIDI2Neopixel is ready!");
#endif
}
//--------------------------------------------- LOOP ----------------------------------------------//
void loop() {
////////////////////////////////////////////// Button 1 /////////////////////////////////////////////
int reading1 = digitalRead(BUTTON_PIN1);
if (reading1 != lastButtonState1) {
lastDebounceTime1 = millis();
}
if ((millis() - lastDebounceTime1) > debounceDelay) {
if (reading1 != buttonState1) {
buttonState1 = reading1;
// only toggle the LED if the new button state is HIGH
if (buttonState1 == LOW) {
ledProgram++;
if (ledProgram>6){
ledProgram = 1;
}
if (DEBUG == true){ Serial.println("Button 1 pressed! Program is " + String(ledProgram)); }
// Set LED indication for program
fill_solid( leds, NUM_LEDS, CRGB(0,0,0));
SetNote(NOTE_OFFSET+ledProgram-1,0xFF0000);
FastLED.show();
}
}
}
////////////////////////////////////////////// Button 2 /////////////////////////////////////////////
int reading2 = digitalRead(BUTTON_PIN2);
if (reading2 != lastButtonState2) {
lastDebounceTime2 = millis();
}
if ((millis() - lastDebounceTime2) > debounceDelay) {
if (reading2 != buttonState2) {
buttonState2 = reading2;
// only toggle the LED if the new button state is HIGH
if (buttonState2 == LOW) {
ledIntensity++;
SetNote(NOTE_OFFSET+ledIntensity-2,0x000000);
if (ledIntensity>LED_INT_STEPS){
ledIntensity = 1;
}
// Map ledIntensity to ledBrightness
ledBrightness = map(ledIntensity, 1, LED_INT_STEPS, 3, 255);
FastLED.setBrightness(ledBrightness);
#ifdef DEBUG
Serial.print("Button 2 pressed! Intensity is ");
Serial.print(String(ledIntensity));
Serial.print(" and brightness to ");
Serial.print(String(ledBrightness));
#endif
// Set LED indication for program
SetNote(NOTE_OFFSET+ledIntensity-1,0x00FF00);
FastLED.show();
}
}
}
////////////////////////////////////////// MIDI Read routine ////////////////////////////////////////
midiEventPacket_t rx = MidiUSB.read();
if (rx.header) {digitalWrite(LED_ACT_PIN, HIGH);}
switch (rx.header) {
case 0:
break; //No pending events
case 0x9:
noteOn(rx.byte1,rx.byte2,rx.byte3);
break;
case 0x8:
noteOff(rx.byte1,rx.byte2,rx.byte3);
break;
case 0xB:
controlChange(rx.byte1 & 0xF,rx.byte2,rx.byte3);
break;
default:
#ifdef DEBUG
Serial.print("Unhandled MIDI message: ");
Serial.print(rx.header, HEX);
Serial.print("-");
Serial.print(rx.byte1, HEX);
Serial.print("-");
Serial.print(rx.byte2, HEX);
Serial.print("-");
Serial.println(rx.byte3, HEX);
#endif
break;
}
if (rx.header) {digitalWrite(LED_ACT_PIN, LOW);}
lastButtonState1 = reading1;
lastButtonState2 = reading2;
}
//------------------------------------------ END OF LOOP -------------------------------------------// |
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