/*
 * Cam the RamBorg
 * CURC project
 * Alison Nicole Craig
 * Spring 2009
 */
 
 int ledPin   = 13;      // Board LED connected to digital pin
 
 int button = 7;         // button pad location
 int signalLow = 9;      // - on button
 
 
 int redPin   = 10;       // RGB pins
 int greenPin = 12;
 int bluePin  = 11;
 
 int spkrPin  = 6;      // Speaker is connected to digital pin 6
 
 boolean mode = true;   // true = light mode
                        // false = sound/move mode
                        
 
 int sensor   = 0;      // Pin for light sensor 
 int value;             // variable to store light value
 
 int xPin     = 2;      // Accelerometer pins:
 int yPin     = 3;
 int zPin     = 4;
 int xValue; 	        // variables to store x
 int yValue;            //                    y
 int zValue;            //                    z

 
 void setup()
 {
   pinMode(ledPin,OUTPUT);
   
   pinMode(signalLow,OUTPUT);
   digitalWrite(signalLow,LOW);
   
   pinMode(redPin,OUTPUT);
   pinMode(greenPin,OUTPUT);
   pinMode(bluePin,OUTPUT);
   pinMode(spkrPin,OUTPUT);
   
   Serial.begin(9600);
   digitalWrite(ledPin,HIGH);
   
   pinMode(button,INPUT);
   digitalWrite(button,HIGH);
 }
 
 void loop()
 {
  checkSwitch();
   
   if (mode){
     value = analogRead(sensor);
     Serial.println(sensor);
     if (value >= 400) {
        color(255,255,0);  // Yellow
        delay(1000);
     }
     else if (value >= 400) {
       color(255,0,0);    // Red
       delay(1000);
     }
     else if (value >= 300) {
       color(0,255,255);  // Cyan
       delay(1000);
     }
     else if (value >= 200){
        color(0,255,0);   // Green
        delay(1000);
     }
     else if (value >= 100) {
        color(0,0,255);   // Blue
        delay(1000);
     }
     else if (value >= 0) {
       color(106,0,128);  // Purple
       delay(1000);
     }
     else {
        color(255,255,255);// White
        delay(1000);
     }
   }
   else {
     color(0,0,0);  // Turning off light
     
     xValue = analogRead(xPin);
     yValue = analogRead(yPin);
     zValue = analogRead(zPin);
     
     Serial.print(xValue);
     Serial.print("\t");
     Serial.print(yValue);
     Serial.print("\t");
     Serial.println(zValue);
     delay(100);
     
     if (xValue+yValue+zValue > 0){
       int wavelength = xValue+yValue+zValue;
       digitalWrite(ledPin,HIGH);
       beep(spkrPin,wavelength,500);
     }
   }
 }
/**
 * COPIED FROM LEAH BUECHLEY'S COLOR (RGB LEDS) EXAMPLE
 * http://web.media.mit.edu/~leah/LilyPad/06_rgb.html
 */
void color (unsigned char red, unsigned char green, unsigned char blue)     // the color generating function
{ 	 
          analogWrite(redPin, 255-red); 	 
          analogWrite(bluePin, 255-blue);
          analogWrite(greenPin, 255-green);
}
/**
 * COPIED FROM LEAH BUECHLEY'S SOUND EXAMPLE
 * http://web.media.mit.edu/~leah/LilyPad/07_sound.html
 */
void beep (unsigned char speakerPin, int frequencyInHertz, long timeInMilliseconds)     // the sound producing function
{ 	 
          int x; 	 
          long delayAmount = (long)(1000000/frequencyInHertz);
          long loopTime = (long)((timeInMilliseconds*1000)/(delayAmount*2));
          for (x=0;x<loopTime;x++) 	 
          { 	 
              digitalWrite(spkrPin,HIGH);
              delayMicroseconds(delayAmount);
              digitalWrite(spkrPin,LOW);
              delayMicroseconds(delayAmount);
          } 	 
} 
void checkSwitch(){
  if (digitalRead(button) == LOW){
    mode = !mode;
  }
 
}