/* Basic Digital Read
 * ------------------
 * This code reads whether the phone is on the hook by treating that hook like a button that is either open or depressed
 */

#define INITPIN 12
#define NUMPIN 11

int counter; // holds the pulse count for each dial spin
int currentValue = 0;
long lastDebounceTime = 0;  // the last time the output pin was toggled
long debounceDelay = 5;    // the debounce time; increase if the output flickers

int ledPin = 13; // choose the pin for the LED
int inPin = 7;   // choose the input pin (for a pushbutton)
int val = 0;     // variable for reading the pin status
int incomingByte = 0; //for incoming serial data

void setup(){
   Serial.begin(9600);

//configure the rotary wheel pins
    pinMode(INITPIN, INPUT_PULLUP);
    pinMode(NUMPIN, INPUT_PULLUP);

// configure the hook inputs, and the onboard LED.
  pinMode(ledPin, OUTPUT);  // declare LED as output
  pinMode(inPin, INPUT);    // declare phone hook as input
}

void loop(){

hookReader();
dialNumber();

}

void hookReader(){
  // send data only when you receive data:
        if (Serial.available() > 0) {
                // read the incoming byte:
                incomingByte = Serial.read();

                // say what you got:
                Serial.print("I received: ");
                Serial.println(incomingByte, DEC);
        }



    int initRead = digitalRead (INITPIN); // Is the wheel turning or not?
  static int lastValue = HIGH;  // holds the last read from the pulse pin.

   val = digitalRead(inPin);  // read input value

  if (val == LOW && incomingByte == 'B' && incomingByte != 'C') {
   digitalWrite(ledPin, LOW);  // turn LED OFF
    Serial.println("dial tone");
     delay(1);        // delay in between reads for stability


  } else if (val == HIGH) {
     // check if the input is HIGH (button released)
    digitalWrite(ledPin, HIGH);  // turn LED ON
    Serial.println("on the hook");   // print "on the hook"
    Serial.print('A');
    delay(1);        // delay in between reads for stability
  }



  if (initRead == LOW) {  // If the wheel is turning....
  Serial.println("dialing");
 }

  else {
    Serial.println("waiting");
  }

}

void dialNumber(){

    int initRead = digitalRead (INITPIN); // Is the wheel turning or not?
  static int lastValue = HIGH;  // holds the last read from the pulse pin.

  if (initRead == LOW) {  // If the wheel is turning....
    int newValue = digitalRead (NUMPIN); // check the pulse pin.
    if (newValue != lastValue) { // if it's CHANGED from the last read...
      lastDebounceTime = millis(); // save its clock cycle; we need to check it.
    }
    // If enough time has passed (aka, it's not just a "bounce" from the
    // analog signal)...
    if ((millis() - lastDebounceTime) > debounceDelay) {
      // and if the current value is DIFFERENT than the one you just read...
      if (currentValue != newValue) {
        currentValue = newValue; // make them the same.
        if (newValue == 1) { // If you just set it to a 1...
          counter++; // it just finished a pulse, so add one to the counter.
        }
      }
    }

    lastValue = newValue; // Your new value becomes the old one for comparison.

  } else {
// once the dial returns home and switches the initializing pin OFF,
// you can be sure that there will be no more pulses coming.
// "Counter" is the number dialed. You may now use it for whatever you want.
// This is adjusted for the special case of "0" actually being 10 pulses.
    if (counter > 0) {
      if (counter == 10) {
        Serial.println (0);
      } else {
        Serial.println (counter);
      }
    }
// After you're done using it, reset counter so it can start again on the
// next dial.
    counter = 0;
  }
}