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48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
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*
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* Envelope Generator (ADSR)
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*
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* A3 = trigger (sync) in
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*
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*/
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int pwmPin = 11; //define output pin, Meergranen output pin is 11
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bool triggered; // logic: trigered, yes or no
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void setup() {
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pinMode(pwmPin, OUTPUT); //set pin as output
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Serial.begin(9600); // debugging (see if trigger is registered)
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}
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void loop() { // run forever
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int input3 = digitalRead(A3); // read analog pin 3, detect triggers
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if(input3 && !triggered) {
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//ATTACK
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for(int value = 0; value<=255; value++){ // cycle through 255 values, start at 0. 8 bit output == 255 values
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analogWrite(pwmPin, value); // analogWrite simulates smooth sinewave using complex pwm duty cycles
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//DELAY
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delay(1);
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}
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//SUSTAIN
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for(int value = 255; value>=0; value--){ // cycle through 255 values, start at 0. 8 bit output == 255 values
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analogWrite(pwmPin, value); // analogWrite simulates smooth sinewave using complex pwm duty cycles
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delay(2);
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}
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//RELEASE
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delay(20);
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triggered = true;
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}
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else if(!input3 && triggered) { //if there is no reading on input3 and condition triggered is true (aka sound is playing), set triggered to false, aka stop playing
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// STOP WHEN NO TRIGGER IS PRESENT (or do something else ;)
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triggered = false;
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}
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}
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