/* flash 3 Pixel LED strips randomly version 2
  www. steamtraininfo.com.
  This sketch uses 3
  WS2812B pixel strips.
*/

#include <FastLED.h>
#define NUM_LEDS 15 /*the number of leds that will light. If */
//****************************
#define DATA_PINA 8 // Connect to the data wires on the pixel strips
#define DATA_PINB 7
#define DATA_PINC 6
//***********************************************************
#define Switch_A 2 // will switch strips on and off
#define Switch_B 3
#define Switch_C 4
//*************************************
int val_A = 0; // declares and sets initial values of val
int val_B = 0;
int val_C = 0;
int randNumber; // from random sketch

CRGB ledsA[NUM_LEDS]; // sets number of pixels that will light on each strip.
CRGB ledsB[NUM_LEDS];
CRGB ledsC[NUM_LEDS];

//*****************************************************

void setup() {
  FastLED.addLeds<WS2812B, DATA_PINA, GRB>(ledsA, NUM_LEDS); //
  FastLED.addLeds<WS2812B, DATA_PINB, GRB>(ledsB, NUM_LEDS);
  FastLED.addLeds<WS2812B, DATA_PINC, GRB>(ledsC, NUM_LEDS);
  //*************************************
  pinMode(Switch_A, INPUT); //establishes how pin processes data
  pinMode(Switch_A, INPUT);
  pinMode(Switch_A, INPUT);
  /* This sets 3 leds on pins D2 to D4 to output
  */
  for (int i = 2; i <= 4; i++) {
    pinMode(i, OUTPUT); // sets pins to output
  }
  randomSeed(analogRead(A0)); /*sets the pin to create "static so the the initial LED to light is different
  eacg time through the loop  */

}

//********************************************************

void loop() {
  BlinkRandomly();
  StripA();
  StripB();
  StripC();
}

//Functions
//***********************************************
void StripA()
{
  EVERY_N_MILLIS(1000) {
    val_A = !val_A;
    if (val_A) {
      fill_solid(ledsA, NUM_LEDS, CRGB::Red);
    } else {
      fill_solid(ledsA, NUM_LEDS, CRGB::Black);
    }
    FastLED.show();
  };
}



void StripB()
{
  EVERY_N_MILLIS(1000) {
    val_B = !val_B;
    if (val_B) {
      fill_solid(ledsB, NUM_LEDS, CRGB::Red);
    } else {
      fill_solid(ledsB, NUM_LEDS, CRGB::Black);
    }
    FastLED.show();
  };
}

//*******************************************************


void StripC()
{
  EVERY_N_MILLIS(1000) {
    val_C = !val_C;
    if (val_C) {
      fill_solid(ledsC, NUM_LEDS, CRGB::Red);
    } else {
      fill_solid(ledsC, NUM_LEDS, CRGB::Black);
    }
    FastLED.show();
  };
}

//**************************************************
void BlinkRandomly() {
  randNumber= random(25, 200);
  int LightLED = random(2, 5); //randomly selects LED to light.  Must use +1 over the last pin number
  //(ie: 4 + 1 = 5)
  int dlay =  randNumber; // sets the blink rate in milliseconds
  digitalWrite(LightLED, HIGH);
  delay(dlay);
  digitalWrite(LightLED, LOW);
  delay(dlay);
}