// Project 3: Simple Way to use a RGB LED

#define BLUE 3         // Define RGB LED pins
#define GREEN 5        // A commom cathode LED type was choosen
#define RED 6          // A small breadboard was added also
#define delayTime 10   // fading time between colors

int redValue;          // define variables for color intensity
int greenValue;
int blueValue;

void setup() {
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
  digitalWrite(RED, HIGH);
  digitalWrite(GREEN, LOW);
  digitalWrite(BLUE, LOW);
}

// main loop
void loop() {

  redValue = 255; 
  greenValue = 0;
  blueValue = 0;

  for(int i = 0; i < 255; i += 1) { // fades out red bring green full when i=255
    redValue -= 1;
    greenValue += 1;

  /*  The following was reversed, counting in the wrong directions
      analogWrite(RED, 255 - redValue);
      analogWrite(GREEN, 255 - greenValue); */

    analogWrite(RED, redValue);
    analogWrite(GREEN, greenValue);
    delay(delayTime);
  } 

  redValue = 0;
  greenValue = 255;
  blueValue = 0;

  for(int i = 0; i < 255; i += 1)  {   // fades out green bring blue full when i=255
    greenValue -= 1;
    blueValue += 1;

  /*  The following was reversed, counting in the wrong directions
      analogWrite(GREEN, 255 - greenValue);
      analogWrite(BLUE, 255 - blueValue); */
 
    analogWrite(GREEN, greenValue);
    analogWrite(BLUE, blueValue);
    delay(delayTime);
  }

  redValue = 0;
  greenValue = 0;
  blueValue = 255;

  for(int i = 0; i < 255; i += 1)  { // fades out blue bring red full when i=255

  // The following code has been rearranged to match the other two similar sections
  blueValue -= 1;
  redValue += 1;

  /*  The following was reversed, counting in the wrong directions
      analogWrite(BLUE, 255 - blueValue);
      analogWrite(RED, 255 - redValue); */
 
    analogWrite(BLUE, blueValue);
    analogWrite(RED, redValue);
    delay(delayTime);
  }
}