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| 1 | #include <MIDI.h> | |
| 2 | #include "LPD8806.h" | |
| 3 | #include "SPI.h" | |
| 4 | ||
| 5 | int LED = 13; // on-board LED | |
| 6 | ||
| 7 | int nLEDs = 32; //LED strip num LEDs | |
| 8 | int dataPin = 2; //LED strip data | |
| 9 | int clockPin = 3; | |
| 10 | ||
| 11 | LPD8806 strip = LPD8806(nLEDs, dataPin, clockPin); | |
| 12 | ||
| 13 | ||
| 14 | ||
| 15 | ||
| 16 | void setup() {
| |
| 17 | pinMode(LED, OUTPUT); | |
| 18 | MIDI.begin(MIDI_CHANNEL_OMNI); // Launch MIDI with default options | |
| 19 | ||
| 20 | // Start up the LED strip | |
| 21 | strip.begin(); | |
| 22 | ||
| 23 | // Update the strip, to start they are all 'off' | |
| 24 | strip.show(); | |
| 25 | ||
| 26 | ||
| 27 | } | |
| 28 | ||
| 29 | void loop() {
| |
| 30 | int i; | |
| 31 | for(i=0; i< strip.numPixels() ; i++) strip.setPixelColor(i, 0); strip.show(); // Refresh LED states | |
| 32 | ||
| 33 | ||
| 34 | int type, note, velocity, channel, d1, d2; | |
| 35 | digitalWrite(LED,LOW); // Is there a MIDI message incoming ? | |
| 36 | if(MIDI.read() && MIDI.getType() == NoteOn){ // Is it a Note ON?
| |
| 37 | - | digitalWrite(LED,HIGH); // Blink the LED a number of times // (0 to 127, it can last a while..) |
| 37 | + | digitalWrite(LED,HIGH); // Blink on-board LED for debugging purposes |
| 38 | note = MIDI.getData1(); | |
| 39 | velocity = MIDI.getData2(); | |
| 40 | channel = MIDI.getChannel(); | |
| 41 | if (velocity > 1) {
| |
| 42 | colorExplode( | |
| 43 | RandomColor(), //color | |
| 44 | 30, //speed of explosion | |
| 45 | note, //note | |
| 46 | 5 //max spread | |
| 47 | ); | |
| 48 | } | |
| 49 | } | |
| 50 | } | |
| 51 | ||
| 52 | ||
| 53 | void colorExplode(uint32_t c, uint8_t wait,int note,int maxSpread){
| |
| 54 | // Start by turning all pixels off: | |
| 55 | int i = 0; | |
| 56 | int start = note - 60; | |
| 57 | for(i=0; i<strip.numPixels(); i++) strip.setPixelColor(i, 0); | |
| 58 | ||
| 59 | unsigned long startTime = millis(); | |
| 60 | unsigned long currTime; | |
| 61 | ||
| 62 | // first hold the note for 1000 miliseconds | |
| 63 | do{
| |
| 64 | currTime = millis(); | |
| 65 | strip.setPixelColor(start, c); // Set new pixel 'on' | |
| 66 | strip.setPixelColor(start, c); // Set new pixel 'on' | |
| 67 | strip.show(); // Refresh LED states | |
| 68 | if(MIDI.read()){
| |
| 69 | if(MIDI.getType() == NoteOn ){
| |
| 70 | for(i=0; i<strip.numPixels(); i++) strip.setPixelColor(i, 0); | |
| 71 | strip.show(); | |
| 72 | return; | |
| 73 | } | |
| 74 | } | |
| 75 | }while(currTime - startTime < 400); | |
| 76 | ||
| 77 | //then explode out | |
| 78 | int direction = 1; | |
| 79 | for(i=0;i <= maxSpread; i = i + direction){
| |
| 80 | ||
| 81 | // 1 is "out", -1 is "in"; | |
| 82 | uint32_t color; | |
| 83 | if (direction == 1){
| |
| 84 | color = c; | |
| 85 | }else{
| |
| 86 | color = 0; | |
| 87 | } | |
| 88 | strip.setPixelColor(start + i, color); // Set new pixel 'on' | |
| 89 | strip.setPixelColor(start - i, color); // Set new pixel 'on' | |
| 90 | strip.show(); // Refresh LED states | |
| 91 | delay(wait); | |
| 92 | ||
| 93 | if( i == maxSpread ){
| |
| 94 | direction = direction * -1; | |
| 95 | strip.setPixelColor(start + maxSpread, 0); | |
| 96 | strip.setPixelColor(start - maxSpread, 0); | |
| 97 | } | |
| 98 | ||
| 99 | if(MIDI.read()){
| |
| 100 | if(MIDI.getType() == NoteOn){
| |
| 101 | for(i=0; i<strip.numPixels(); i++) strip.setPixelColor(i, 0); | |
| 102 | strip.show(); | |
| 103 | return; | |
| 104 | } | |
| 105 | } | |
| 106 | ||
| 107 | ||
| 108 | } | |
| 109 | ||
| 110 | ||
| 111 | } | |
| 112 | ||
| 113 | /* Helper functions */ | |
| 114 | ||
| 115 | uint32_t RandomColor(){
| |
| 116 | ||
| 117 | return Wheel( rand() % 384); | |
| 118 | ||
| 119 | } | |
| 120 | ||
| 121 | ||
| 122 | uint32_t Wheel(uint16_t WheelPos) | |
| 123 | {
| |
| 124 | byte r, g, b; | |
| 125 | switch(WheelPos / 128) | |
| 126 | {
| |
| 127 | case 0: | |
| 128 | r = 127 - WheelPos % 128; //Red down | |
| 129 | g = WheelPos % 128; // Green up | |
| 130 | b = 0; //blue off | |
| 131 | break; | |
| 132 | case 1: | |
| 133 | g = 127 - WheelPos % 128; //green down | |
| 134 | b = WheelPos % 128; //blue up | |
| 135 | r = 0; //red off | |
| 136 | break; | |
| 137 | case 2: | |
| 138 | b = 127 - WheelPos % 128; //blue down | |
| 139 | r = WheelPos % 128; //red up | |
| 140 | g = 0; //green off | |
| 141 | break; | |
| 142 | } | |
| 143 | return(strip.Color(r,g,b)); | |
| 144 | } |
