/*
  Demo For RGB Module (Common Cathode)
  By Farhad Nikkhah
  https://www.NikiSite.com
  https://www.nikisite.com/product/nse-crgb/

  Color       Red,    Green,  Blue Pin Values
  Red 	      HIGH,   LOW,    LOW
  Green 	    LOW,    HIGH,   LOW
  Blue 	      LOW,    LOW,    HIGH
  Purple 	    HIGH,   LOW,    HIGH
  Turqoise 	  LOW,    HIGH,   HIGH
  White 	    HIGH,   HIGH,   HIGH
*/

// LEDs must be connected to arduino PWM pins - see board pinout
#define RED  13                         // pin that red led is connected to    
#define GREEN  12                       // pin that green led is connected to     
#define BLUE  11                        // pin that blue led is connected to 

#define Short_Delay 10                 // internal delay in ms
#define Long_Delay 1000                // internal delay in ms

//================================================================================
void setup()
{
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);
}
//================================================================================
void loop()
{
  // fade from red to green
  for (int i = 255; i > 0; i--) {
    analogWrite(RED, i);                // red initially ON
    analogWrite(GREEN, 255 - i);        // green initially OFF
    analogWrite(BLUE, 0);               // blue OFF
    delay(Short_Delay);                 // wait before next transition
  }

  // fade from green to blue
  for (int i = 255; i > 0; i--) {
    analogWrite(RED, 0);              // red OFF
    analogWrite(GREEN, i);              // green initially ON
    analogWrite(BLUE, 0 + i);         // blue initially OFF
    delay(Short_Delay);                 // wait before next transition
  }

  // fade from blue to red
  for (int i = 0; i < 255; i++) {
    analogWrite(RED, 0 + i);            // red initially ON
    analogWrite(GREEN, 0);              // green OFF
    analogWrite(BLUE, 255 - i);         // blue initially OFF
    delay(Short_Delay);                 // wait before next transition
  }

//   OFF        LOW,   LOW,    LOW
  setRgbLedColor(LOW, LOW, LOW);
  delay(Long_Delay);                    // wait before next transition

//   Red        HIGH,   LOW,    LOW
  setRgbLedColor(HIGH, LOW, LOW);
  delay(Long_Delay);                    // wait before next transition

//   Green      LOW,    HIGH,   LOW
  setRgbLedColor(LOW, HIGH, LOW);
  delay(Long_Delay);                    // wait before next transition

//   Blue       LOW,    LOW,    HIGH
  setRgbLedColor(LOW, LOW, HIGH);
  delay(Long_Delay);                    // wait before next transition

//   Purple     HIGH,   LOW,    HIGH
  setRgbLedColor(HIGH, LOW, HIGH);
  delay(Long_Delay);                    // wait before next transition

//   Turqoise   LOW,    HIGH,   HIGH
  setRgbLedColor(LOW, HIGH, HIGH);
  delay(Long_Delay);                    // wait before next transition

//   White      HIGH,   HIGH,   HIGH
  setRgbLedColor(HIGH, HIGH, HIGH);
  delay(Long_Delay);                    // wait before next transition                 
  
  setRgbLedColor(LOW, LOW, LOW);
  delay(Long_Delay);                    // wait before next transition
}
//================================================================================
// setRgbLedColor takes in either HIGH or LOW for red, green, and blue.
void setRgbLedColor(int red, int green, int blue)
{
  digitalWrite(RED, red);
  digitalWrite(GREEN, green);
  digitalWrite(BLUE, blue);
}