WifiLamp.ino

#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>

const char* ssid = "1234";
const char* password = "";

#define GREEN 12
#define RED 13 
#define BLUE 15

const int httpPort = 80;
HTTPClient http;

void initWLAN() {
  
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  
  WiFi.begin(ssid, password);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println(WiFi.localIP());
  
}

void setup() {
  Serial.begin(115200);
  delay(10);
  analogWriteFreq(500);
  analogWriteRange(255);
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BLUE, OUTPUT);

  digitalWrite(RED, 0);
  digitalWrite(GREEN, 0);
  digitalWrite(BLUE, 0);

  initWLAN();
}


String cmd;
int targetRed   = 0;
int targetBlue  = 0;
int targetGreen = 0;

int fromRed   = 0;
int fromBlue  = 0;
int fromGreen = 0;

int toRed   = 0;
int toBlue  = 0;
int toGreen = 0;

int red   = 0;
int blue  = 0;
int green = 0;

void execute(void) {

  if (cmd == "fadeTo" || cmd == "fadeBetween") {
    if (red < targetRed) {
      red++;
    }
    if (red > targetRed) {
      red--;
    }

    if (green < targetGreen) {
      green++;
    }
    if (green > targetGreen) {
      green--;
    }

    if (blue < targetBlue) {
      blue++;
    }
    if (blue > targetBlue) {
      blue--;
    }
  }

  if (cmd == "set") {
    red   = targetRed;
    blue  = targetBlue;
    green = targetGreen;
  }

  if (red < 0) {
    red = 0;
  }
  if (blue < 0) {
    blue = 0;
  }
  if (green < 0) {
    green = 0;
  }

  analogWrite(RED, red);
  analogWrite(BLUE, blue);
  analogWrite(GREEN, green);
  
}

void parseCommand(String response) {
  int cstart= response.indexOf("cmd\":\"") + 6;
  int cend = response.indexOf("\"", cstart);
  cmd = response.substring(cstart, cend);

  targetBlue  = parseJSONField(response, "blue");
  targetRed   = parseJSONField(response, "red");
  targetGreen = parseJSONField(response, "green");

  fromBlue  = parseJSONField(response, "fromBlue");
  fromRed   = parseJSONField(response, "fromRed");
  fromGreen = parseJSONField(response, "fromGreen");
  
  toBlue  = parseJSONField(response, "toBlue");
  toRed   = parseJSONField(response, "toRed");
  toGreen = parseJSONField(response, "toGreen");
}

int parseJSONField(String response, String name) {
  int start= response.indexOf(name + "\":") + name.length() + 2;
  int end = response.indexOf("}", start);
  String value = response.substring(start, end);
  return value.toInt();
}

void pullCommand() {
 // Serial.print("[HTTP] begin...\n");
  http.begin("http://dweet.io/get/latest/dweet/for/aboard-curve");
 // Serial.print("[HTTP] GET...\n");
  int httpCode = http.GET();
  if (httpCode > 0) {
     // Serial.printf("[HTTP] GET... code: %d\n", httpCode);
      if (httpCode == HTTP_CODE_OK) {
          String response = http.getString();
          parseCommand(response);
          //Serial.println(response);
      }
  } else {
     // Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
  }
  http.end();

}

int fadeState = HIGH;
void loop() {
  pullCommand();

  if (cmd == "fadeBetween") {
      if (fadeState == LOW) {
        targetRed   = fromRed;
        targetBlue  = fromBlue;
        targetGreen = fromGreen;
        fadeState = HIGH;
      } else {
        targetRed   = toRed;
        targetBlue  = toBlue;
        targetGreen = toGreen;
        fadeState = LOW;
      }
  }
  
  if(true) {
    Serial.print("Command: ");
    Serial.println(cmd);
    Serial.println("------------");
    Serial.print("red: ");
    Serial.println(red);
    Serial.print("blue: ");
    Serial.println(blue);
    Serial.print("green: ");
    Serial.println(green);
    Serial.println("------------");
    Serial.print("targetRed: ");
    Serial.println(targetRed);
    Serial.print("targetBlue: ");
    Serial.println(targetBlue);
    Serial.print("targetGreen: ");
    Serial.println(targetGreen);
    Serial.println("------------");
    Serial.print("toRed: ");
    Serial.println(toRed);
    Serial.print("toBlue: ");
    Serial.println(toBlue);
    Serial.print("toGreen: ");
    Serial.println(toGreen);
    Serial.println("------------");
    Serial.print("fromRed: ");
    Serial.println(fromRed);
    Serial.print("fromBlue: ");
    Serial.println(fromBlue);
    Serial.print("fromGreen: ");
    Serial.println(fromGreen);
  }


  for(int i=0;i<255;i++) {
    execute();
    delay(10);
  }
  delay(100);
}