// Beat Converter
// This script is for the arduino. 
// Gijs Gieskes 2008

int analogIn0 = 0;
int analogIn1 = 0;
	    
int onoff = 0;
int devide = 0;

unsigned long MIllisTime = 0;

int interval = 64;
unsigned long previousMillis = 0;

int intervalAngle = interval * 10;
unsigned long previousMillisAngle = 0;
byte angle[] = {0,0};
boolean switcherAngle = false;
byte angleOut = 33;

int angleTcalc = 0;

void setup() {
  pinMode(3, OUTPUT);
  pinMode(5, OUTPUT);
  
  pinMode(6, INPUT);
  digitalWrite(6, HIGH);
  
  Serial.begin(57600);
}

void loop() {
  MIllisTime = millis();
  
  interval = analogRead(2)+1;
  
  analogIn0 = (analogRead(0)/2) - 255;
  analogIn0 = constrain(analogIn0, 0, 255);
  analogIn1 = analogRead(1);
  analogIn1 = map(analogIn1, 0, 1023, 0, angleOut); 
  analogIn1 = constrain(analogIn1, 0, 255);
  
  if (MIllisTime - previousMillis > interval) {
    previousMillis = MIllisTime; 
    if(onoff == HIGH){serialPrintClock();}  //stuur maar een keer
    onoff = LOW;
  }
  
  angleTcalc = analogIn0 + (angleOut - analogIn1);
  angleTcalc = constrain(angleTcalc, 0, 255);
  
  if(angleTcalc > angleOut){               //if angleTcalc is higher the angleOut, keep onoff high 
     previousMillis = MIllisTime;          //reset previousMillis, so onoff remains HIGH when angleTcalc has gone over the threshold.
     if(onoff == LOW){serialPrintClock();} //stuur maar een keer
     onoff = HIGH;
  }
  
  //capture the highest value 2 time
  if(analogIn0 > angle[0]){
    angle[0] = analogIn0;
  }
  if(analogIn0 > angle[1]){
    angle[1] = analogIn0;
  }
  
  if (MIllisTime - previousMillisAngle > 2000) {
    previousMillisAngle = MIllisTime;
    switcherAngle = !switcherAngle;
    if(switcherAngle){      //switch back and forth between captured values, so there are no gaps
      angleOut = angle[0];
      angleOut = min(angleOut, 255);
      angle[0] = 0;
    }else{
      angleOut = angle[1];
      angleOut = min(angleOut, 255);
      angle[1] = 0;
    }
  }

  digitalWrite(3 ,onoff);
  if(digitalRead(6) == LOW){
    digitalWrite(5 ,onoff);
  }else{
    digitalWrite(5 , LOW);
  }
}

void serialPrintClock(){
  for(byte i=0; i<24; i++){
    Serial.print(56, BYTE);
  }
}