/*
  Analog input, analog output, serial output

 Reads an analog input pin, maps the result to a range from 0 to 255
 and uses the result to set the pulsewidth modulation (PWM) of an output pin.
 Also prints the results to the serial monitor.

 The circuit:
 * potentiometer connected to analog pin 0.
   Center pin of the potentiometer goes to the analog pin.
   side pins of the potentiometer go to +5V and ground
 * LED connected from digital pin 9 to ground

 created 29 Dec. 2008
 modified 9 Apr 2012
 by Tom Igoe

 This example code is in the public domain.

 */

// These constants won't change.  They're used to give names
// to the pins used:

const int analogInPinRGBLED_RED = A0;  // Analog input pin that the potentiometer is attached to
const int analogInPinRGBLED_BLUE = A1;
const int analogInPinRGBLED_GREEN = A2;

const int analogOutPin = 9; // Analog output pin that the LED is attached to

int potRGBLED_RED = 0;        // value read from the pot
int potRGBLED_BLUE = 0;
int potRGBLED_GREEN = 0;


void setup() {

  pinMode(RGBLED_RED, OUTPUT);
  pinMode(RGBLED_BLUE, OUTPUT);
  pinMode(RGBLED_GREEN,OUTPUT);

  // initialize serial communications at 9600 bps:
  Serial.begin(9600);
}

void loop() {
  // read the analog in value:
  potRGBLED_RED = analogRead(analogInPinRGBLED_RED);
  potRGBLED_GREEN = analogRead(analogInPinRGBLED_GREEN);
  potRGBLED_BLUE = analogRead(analogInPinRGBLED_BLUE);

  // map it to the range of the analog out:
  potRGBLED_RED = map(potRGBLED_RED , 0, 1023, 0, 255);
  potRGBLED_GREEN = map(potRGBLED_GREEN , 0, 1023, 0, 255);
  potRGBLED_BLUE = map(potRGBLED_BLUE , 0, 1023, 0, 255);

  // change the analog out value:
  analogWrite(RGBLED_RED, potRGBLED_RED);
  analogWrite(RGBLED_GREEN, potRGBLED_GREEN);
  analogWrite(RGBLED_BLUE, potRGBLED_BLUE);

  // print the results to the serial monitor:
  Serial.print(potRGBLED_RED, HEX);
  Serial.print(potRGBLED_GREEN, HEX);
  Serial.println(potRGBLED_BLUE, HEX);

  // wait 2 milliseconds before the next loop
  // for the analog-to-digital converter to settle
  // after the last reading:
  delay(2);
}