/*
 * Board:   Arduino Mega 2560
 * File:    Lee_04
 * Author:  Clive "Max" Maxfield (max@clivemaxfield.com) 
 * License: The MIT License (See full license at the bottom of this file)
 *
 * Notes:   Simple test program to demo NeoPixels
 *          Simple "breathing" effect
 */

#include <Adafruit_NeoPixel.h>          // Library for NeoPixels

#define pinPix 12                       // Pin driving NeoPixel Ring or String
#define numPix 16                       // Number of NeoPixels in the Ring or Strip

// Setup NeoPixel Ring
// Parameter 1 = number of pixels in strip
// Parameter 2 = pin number driving the strip
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel myNeoPixels = Adafruit_NeoPixel(numPix, pinPix, NEO_GRB + NEO_KHZ800);


void setup() {
  myNeoPixels.begin();   // Initialize the NeoPixel array in the Arduino's memory,
  myNeoPixels.show();    // turn all pixels off, and upload to ring or string

}

void loop() {
  letsDoIt(20, 20, 255,255,255);       // Pause; Number of steps; Full-on R,G,B values
}


// Pause = delay between transitions
// Steps = number of steps
// R, G, B = Full-on RGB values
void letsDoIt(int pause, int steps, byte R, byte G, byte B) { 

  int tmpR, tmpG, tmpB;         // Temp values
  
  // Fade up
  for (int s=1; s<=steps; s++) {
    tmpR = (R * s) / steps;     // Multiply first to avoid truncation errors  
    tmpG = (G * s) / steps;
    tmpB = (B * s) / steps;
    
    for (int i=0; i<numPix; i++) {
      myNeoPixels.setPixelColor(i,tmpR,tmpG,tmpB);
    }
    myNeoPixels.show();
    delay(pause);
  }    

  // Fade down
  for (int s=steps; s>0; s--) {
    tmpR = (R * s) / steps;     // Multiply first to avoid truncation errors  
    tmpG = (G * s) / steps;
    tmpB = (B * s) / steps;
    
    for (int i=0; i<numPix; i++) {
      myNeoPixels.setPixelColor(i,tmpR,tmpG,tmpB);
    }
    myNeoPixels.show();
    delay(pause);
  }    

  delay(pause * 10);
}


/*
 * Copyright (c) 2015 Clive "Max" Maxfield
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHOR(S) OR COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */