Coin Acceptor

coin_acceptor.ino

const int coinSelector = A1; // Analog input pin that the coin selector uses
int signalValue = 0; // For storing value from analog input
int signalPreviousValue = 0;

int offsetTrigger = 80;

int pulseCounter = 0;

bool hasTriggered = false;
int state = 0;

int previousState = 0;

int incomingByte = 0;

int learningNumber = 50;
int learningCounter = 0;
int learningOffset = 0;

/*
 detect front montant pour determiner debut de lecture
 plus si temps - dernier front montant est trop long alors nouvelle pièce

*/

void setup() {
  Serial.begin(38400);
  Serial.println("Ready...");

}

void loop() {

  if (Serial.available() > 0) {
     incomingByte = Serial.read();
     

     if ((char)incomingByte == 'r') {
        Serial.println("---- ------ ------ reset");
        pulseCounter = 0;
     }

     if ((char)incomingByte == 'l') {
        Serial.println("---- ------ ------ learn");
        learningCounter = 0;
        learningOffset = 0;
     }
  }

  if (learningOffset == 0 && learningCounter != learningNumber) {
   
    if (signalValue > learningOffset) {
      learningOffset = signalValue;
    }
    
    learningCounter++;
  }
  
  signalValue = analogRead(coinSelector);

  if (signalValue < 4) {
    signalValue = offsetTrigger - 4;
  }

   Serial.print("Learning: ");
   Serial.print(learningOffset);
   Serial.print("-- counter: ");
   Serial.print(pulseCounter);
   Serial.print(" --- pulse: ");
   Serial.print(signalValue);
  
  if (signalValue > (learningOffset + 2)) { // up state
    //Serial.println(" -- up");
    state = 1;
  }


  if (signalValue < (learningOffset + 2) && signalPreviousValue > (learningOffset + 2)) { // low state
    Serial.println(" -- pulse");
    
    pulseCounter += 1;
  } else {
    Serial.println("");  
  }


  previousState = state;
  signalPreviousValue = signalValue;
}