rhonda.ino

#include <FastLED.h>
FASTLED_USING_NAMESPACE;

// How many leds in your strip?
#define NUM_LEDS 25

// For led chips like Neopixels, which have a data line, ground, and power, you just
// need to define DATA_PIN.  For led chipsets that are SPI based (four wires - data, clock,
// ground, and power), like the LPD8806, define both DATA_PIN and CLOCK_PIN
#define DATA_PIN 6

bool TURNED_ON; //Is the led on

// Define the array of leds
CRGB leds[NUM_LEDS];

void setup()
{
  Particle.function("led", ledToggle);
  LEDS.addLeds<NEOPIXEL, DATA_PIN>(leds, NUM_LEDS);
  LEDS.setBrightness(84);
  TURNED_ON = false;
}

void fadeall()
{
  for (int i = 0; i < NUM_LEDS; i++)
  {
    leds[i].nscale8(60);
  }
}

void loop()
{
  if (TURNED_ON == true)
  {
    // First slide the led in one direction for cylon effect
    for (int i = 0; i < 9; i++)
    {
      leds[i] = CRGB::Red;
      // Show the leds
      FastLED.show();

      fadeall();
      // Wait a little bit before we loop around and do it again
      delay(200);
    }

    // Now go in the other direction for cylon effect
    for (int i = (9) - 1; i >= 0; i--)
    {
      leds[i] = CRGB::Red;
      // Show the leds
      FastLED.show();
      fadeall();
      // Wait a little bit before we loop around and do it again
      delay(200);
    }
  }
  else
  {
    for (int i = 0; i < 9; i++)
    {
      leds[i] = CRGB::Black;
    }
    FastLED.show();
  }
}

// Handle cloud function call for on/off state
int ledToggle(String command)
{
  /* Particle.functions always take a string as an argument and return an integer.
    Since we can pass a string, it means that we can give the program commands on how the function should be used.
    In this case, telling the function "on" wi`ll turn the LED on and telling it "off" will turn the LED off.
    Then, the function returns a value to us to let us know what happened.
    In this case, it will return 1 for the LEDs turning on, 0 for the LEDs turning off,
    and -1 if we received a totally bogus command that didn't do anything to the LEDs.
    */

  if (command == "on")
  {
    TURNED_ON = true;
    return 1;
  }
  else if (command == "off")
  {
    TURNED_ON = false;
    return 0;
  }
  else
  {
    return -1;
  }
}