7. RGB MOUBLE

1. 실체도

2. Sample Source Code

/*     ---------------------------------------------------------

 *     |  Experimentation Kit for Arduino Example Code         |

 *     |  CIRC-RGB .: Colourful Light :. (RGB LED)             |

 *     ---------------------------------------------------------

 *

 * We've blinked an LED and controlled eight in sequence now it's time to

 * control colour. Using an RGB LED (actual 3 LEDs in a single housing) 

 * we can generate any colour our heart desires.

 *

 * (we'll also use a few programming shortcuts to make the code

 * more portable/readable)

 */

//RGB LED pins

int ledDigitalOne[] = {10, 11, 9}; //the three digital pins of the digital LED

                                   //10 = redPin, 11 = greenPin, 9 = bluePin

const boolean ON = HIGH;     //Define on as LOW (this is because we use a common

                            //Anode RGB LED (common pin is connected to +5 volts)

const boolean OFF = LOW;   //Define off as HIGH

//Predefined Colors

const boolean RED[] = {ON, OFF, OFF};   

const boolean GREEN[] = {OFF, ON, OFF};

const boolean BLUE[] = {OFF, OFF, ON};

const boolean YELLOW[] = {ON, ON, OFF};

const boolean CYAN[] = {OFF, ON, ON};

const boolean MAGENTA[] = {ON, OFF, ON};

const boolean WHITE[] = {ON, ON, ON};

const boolean BLACK[] = {OFF, OFF, OFF};

//An Array that stores the predefined colors (allows us to later randomly display a color)

const boolean* COLORS[] = {RED, GREEN, BLUE, YELLOW, CYAN, MAGENTA, WHITE, BLACK};

void setup(){

  for(int i = 0; i < 3; i++){

   pinMode(ledDigitalOne[i], OUTPUT);   //Set the three LED pins as outputs

  }

}

void loop(){

/* Example - 1 Set a color

   Set the three LEDs to any predefined color

*/

   setColor(ledDigitalOne, GREEN);    //Set the color of LED one

/* Example - 2 Go through Random Colors

  Set the LEDs to a random color

*/

   randomColor();

}

void randomColor(){

  int rand = random(0, sizeof(COLORS) / 2);  //get a random number within the range of colors

  setColor(ledDigitalOne, COLORS[rand]);  //Set the color of led one to a random color

  delay(1000);

}

/* Sets an led to any color

   led - a three element array defining the three color pins (led[0] = redPin, led[1] = greenPin, led[2] = bluePin)

   color - a three element boolean array (color[0] = red value (LOW = on, HIGH = off), color[1] = green value, color[2] =blue value)

*/

void setColor(int* led, boolean* color){

 for(int i = 0; i < 3; i++){

   digitalWrite(led[i], color[i]);

 }

}

/* A version of setColor that allows for using const boolean colors

*/

void setColor(int* led, const boolean* color){

  boolean tempColor[] = {color[0], color[1], color[2]};

  setColor(led, tempColor);

}