Animated Particle tree

tree.cpp

#include "application.h"

char number = -1;
char maxNumber = 2;
bool alt = false;

int setNumber(String value) {
  EEPROM.write(0, value.toInt());
  return 0;
}

void blinkNextLED() {
  if(number == maxNumber) {
    Particle.publish("tree_led/0");
  } else {
    Particle.publish(String("tree_led/") + String(number + 1, DEC));
  }
}

void blinkLED(const char *event, const char *data) {
  if(number == 0) {
    RGB.color(RGB_COLOR_YELLOW);
    delay(200);
    RGB.color(0);
    delay(200);
    RGB.color(RGB_COLOR_YELLOW);
  } else {
    if(alt) {
      RGB.color(RGB_COLOR_RED);
    } else {
      RGB.color(RGB_COLOR_GREEN);
    }
    alt = !alt;
  }
  delay(200);
  RGB.color(0);

  blinkNextLED();
}

void setup() {
  RGB.control(true);
  Particle.function("number", setNumber);

  number = EEPROM.read(0);
  Particle.subscribe(String("tree_led/") + String(number, DEC), blinkLED);

  if(number == 0) {
    blinkNextLED();
  }
}