/* HOME AUTOMATION
Implemented using an ESP32, It can Remotely control a Light , fan and a door knob with
the help of inbuilt wifi module , using Thingspeak and MIT App inventor. Here the 
stepper motor is used to contol the door knob and instead of a fan here a red LED is
used*/




#include <WiFi.h>
#include <AccelStepper.h>
#include<Stepper.h>
#include <ThingSpeak.h>

const char* SSID = "Wokwi-GUEST";
const char* PWD = "";
WiFiClient client;

unsigned long int ChannelNumber = 2592973; 
const char* writeAPIKey = "IKIKMW969PHA1AWE";
const char* readAPIKey = "C21BRVU22BUJC8ED";
const int lightPin = 16;
const int fanPin = 17;
AccelStepper stepper(AccelStepper::DRIVER, 12, 14);



void setup() {
  Serial.begin(115200);
  WiFi.begin(SSID, PWD);
  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(500);
  }
  Serial.println();
  Serial.println("WiFi Connected.");
  Serial.println(WiFi.localIP());
  ThingSpeak.begin(client);

  pinMode(lightPin, OUTPUT);
  pinMode(fanPin, OUTPUT);

  stepper.setMaxSpeed(1000); 
  stepper.setAcceleration(500);
}

void loop() {
  int A = ThingSpeak.readLongField(ChannelNumber,1,readAPIKey);
  int B = ThingSpeak.readLongField(ChannelNumber,2,readAPIKey);
  int C = ThingSpeak.readLongField(ChannelNumber,3,readAPIKey);

  if (A == 1) {
    Serial.println("DOOR LOCKED");
    stepper.runToNewPosition(100);
    
  } else if (A == 0) {
    Serial.println("DOOR UNLOCKED");
    stepper.runToNewPosition(0); 
  }

  if (B == 1) {
    Serial.println("LIGHTS ON");
    digitalWrite(lightPin, HIGH);
  } else if (B == 0) {
    Serial.println("LIGHTS OFF");
    digitalWrite(lightPin, LOW);
  }

  if (C == 1) {
    Serial.println("FAN ON");
    digitalWrite(fanPin, HIGH); 
  } else if (C == 0) {
    Serial.println("FAN OFF");
    digitalWrite(fanPin, LOW);
  }

  delay(500);
}