Le programmeur des anneaux ...

Une démonstration d'interruptions multiples

Une activité tirée du forum arduino .

On se propose ici de commander une série de 3 anneaux néopixels à l'aide d'une carte arduino nano et de 4 boutons, il ne restera ensuite qu'a se montrer créatif !

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#define inter 2 //pull-up IN
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#define button1 3 //pull-up IN
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#define button2 4 //pull-up IN
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#define button3 5 //pull-up IN
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#define button4 6 //pull-up IN
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#include <Adafruit_NeoPixel.h>
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#ifdef __AVR__
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 #include <avr/power.h> // Required for 16 MHz Adafruit Trinket
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#endif
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#define PINA 9 // On Trinket or Gemma, suggest changing this to 1
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#define PINB 8 
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#define PINC 7 
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// How many NeoPixels are attached to the Arduino?
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#define NUMPIXELS 8 // Popular NeoPixel ring size
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#define DELAYVAL 500
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Adafruit_NeoPixel pixelsA(NUMPIXELS, PINA, NEO_GRB + NEO_KHZ800);
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Adafruit_NeoPixel pixelsB(NUMPIXELS, PINB, NEO_GRB + NEO_KHZ800);
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Adafruit_NeoPixel pixelsC(NUMPIXELS, PINC, NEO_GRB + NEO_KHZ800);
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volatile unsigned long button_time = 0;
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int debounce = 50; // debounce latency in ms
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volatile int trigger = 0;
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void setup() {
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  Serial.begin(19200);
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pinMode(button1, INPUT_PULLUP);
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pinMode(button2, INPUT_PULLUP);
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pinMode(button3, INPUT_PULLUP);
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pinMode(button4, INPUT_PULLUP);
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pinMode(inter, INPUT_PULLUP);
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pixelsA.begin();
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pixelsB.begin();
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pixelsC.begin();
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pinMode(PINA,OUTPUT);
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pinMode(PINB,OUTPUT);
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pinMode(PINC,OUTPUT);
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Serial.println("Starting...");
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attachInterrupt(digitalPinToInterrupt(inter), detect, FALLING);
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}
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void loop() {
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pixelsA.clear(); 
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pixelsB.clear(); 
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pixelsC.clear(); 
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for(int i=0; i<NUMPIXELS; i++) { // For each pixel...
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    // pixels.Color() takes RGB values, from 0,0,0 up to 255,255,255
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    // Here we're using a moderately bright green color:
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    pixelsA.setPixelColor(i, pixelsA.Color(0, 50, 0));
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    pixelsB.setPixelColor(i, pixelsB.Color(50, 0, 0));
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    pixelsC.setPixelColor(i, pixelsC.Color(0, 0, 50));
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    pixelsA.show();   // Send the updated pixel colors to the hardware.
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 pixelsB.show();
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 pixelsC.show();
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    delay(DELAYVAL);
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}
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}
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void detect(){
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if ( millis()-button_time > 250) {
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//delayMicroseconds(32000);
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//Serial.println(digitalRead(button1));
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//Serial.println(digitalRead(button2));
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//Serial.println(digitalRead(button3));
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if (!digitalRead(button1)) trigger=1;
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if (!digitalRead(button2)) trigger=2;
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if (!digitalRead(button3)) trigger=3;
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if (!digitalRead(button4)) trigger=4;
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Serial.println(trigger);
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button_time = millis() ;
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}
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}
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installer l'IDE arduino


Démonstration anneaux Néopixels
Le principe du montage, pour voir le câblage , consulter le code démo-anneaux