Bed_Light.ino

#include <Arduino.h>
#include <FastLED.h>

#define LED_PIN     4
#define COLOR_ORDER GRB
#define CHIPSET     WS2812B
#define NUM_LEDS    22

#define BRIGHTNESS  255

int brtInPin = 4;                    // Analog input pin to the brightness pot
int brtVal;                          // brightness value from pot pin1 
int brtSensorValue = BRIGHTNESS;     // value read from the brightness pot
int oldVal;


int switchPin = 2;                 
int switchState = 0;                 // tracks button presses
boolean buttonState = LOW;           // tracks button state with a debouncer
unsigned long interval=2000; 
unsigned long previousMillis=0;
unsigned long currentMillis;

CRGB leds[NUM_LEDS];

void setup() {
  delay(3000); // sanity delay
  FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
  FastLED.setBrightness( BRIGHTNESS );

  pinMode(switchPin, INPUT);  
  Serial.begin(9600);
  }// setup
//---------------------------------------------------------------------------
  void off(){
    FastLED.clear();
    Serial.print("Off   ");
    Serial.println(currentMillis);
  }// off()
//----------------------------------------------------------------------------
  void warm(){
    Serial.print("Warm  ");
    Serial.println(currentMillis);
}// warm
//----------------------------------------------------------------------------
  void cool(){
    Serial.print("Cool  ");
    Serial.println(currentMillis);
  }// cool


//----------------------------------------------------------------------------
  void loop()
  {
  currentMillis = millis();                    // grab current time
  if (digitalRead(switchPin) == HIGH)          // debouncer
  {
    delay(125);                                // debounce delay 
    buttonState = digitalRead(switchPin);
  }
  
  if (buttonState == HIGH && switchState == 0) // if the button is pressed change the switch to the first state
  {
    switchState = 1;
    buttonState = LOW;
    previousMillis = 0;
  }
  if (buttonState == HIGH && switchState == 1 && (unsigned long)(currentMillis - previousMillis) >= interval) // if the button is pressed again within 2 seconds change the switch to the second state 
  {
   switchState = 2;
   buttonState = LOW;
  }
  else
   if (buttonState == HIGH && switchState == 1 && (unsigned long)(currentMillis - previousMillis) <= interval) 
  { 
   switchState = 0;
   buttonState = LOW;
  }
  if (buttonState == HIGH && switchState == 2) // if the button is pressed again change the switch to the third state 
  {
   switchState = 0;
   buttonState = LOW;
  }
//--------------------------------------------------------------------------------  
  if (switchState == 0)  // if the switch is in the null state, all off
  {
    // All off
    off();
  }
  else if (switchState == 1)  // if the switch is in the first state, warm white
  {
    warm(); 
  }
  else if (switchState == 2)  // if the switch is in the second state, cool white
  {
    cool();
  }
  }// loop