elktros/ESP8266_WiFi_Controlled_Relay_Android.ino

## ESP8266_WiFi_Controlled_Relay_Android.ino
#include <ESP8266WiFi.h>

const char* ssid = "SSID";//type your ssid
const char* password = "PASSWORD";//type your password

int relayPin = 2; // GPIO2 of ESP8266
WiFiServer ESPserver(80);//Service Port

void setup()
{
Serial.begin(115200);
pinMode(relayPin, OUTPUT);
digitalWrite(relayPin, HIGH);

Serial.println();
Serial.println();
Serial.print("Connecting to: ");
Serial.println(ssid);

WiFi.begin(ssid, password);
delay(5000);

/*
 The following four line of the
 code will assign a Static IP Address to
 the ESP Module. If you do not want this,
 comment out the following four lines.
 */

IPAddress ip(192,168,1,254);
IPAddress gateway(192,168,1,1);
IPAddress subnet(255,255,255,0);
WiFi.config(ip, gateway, subnet);
delay(5000);

while (WiFi.status() != WL_CONNECTED)
{
delay(100);
Serial.print("*");
}
Serial.println("");
Serial.println("WiFi connected");

// Start the server
ESPserver.begin();
Serial.println("Server started");

// Print the IP address
Serial.print("The URL to control ESP8266: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
}

void loop()
{
// Check if a client has connected
WiFiClient client = ESPserver.available();
if (!client)
{
return;
}

// Wait until the client sends some data
Serial.println("New Client");
while(!client.available())
{
delay(1);
}

// Read the first line of the request
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();

// Match the request

int value = LOW;
if (request.indexOf("/RELAYON") != -1)
{
Serial.println("LAMP is ON");
digitalWrite(relayPin, LOW);
value = LOW;
}
if (request.indexOf("/RELAYOFF") != -1)
{
Serial.println("LAMP is OFF");
digitalWrite(relayPin, HIGH);
value = HIGH;
}

// Return the response
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); //  IMPORTANT
client.println("<!DOCTYPE HTML>");
client.println("<html>");

client.print("Status of the Lamp: ");

if(value == LOW)
{
client.print("ON");
}
else
{
client.print("OFF");
}

delay(1);
//client.stop();
Serial.println("Client disconnected");
Serial.println("");
}
	#include <ESP8266WiFi.h>

	const char* ssid = "SSID";//type your ssid
	const char* password = "PASSWORD";//type your password

	int relayPin = 2; // GPIO2 of ESP8266
	WiFiServer ESPserver(80);//Service Port

	void setup()
	{
	Serial.begin(115200);
	pinMode(relayPin, OUTPUT);
	digitalWrite(relayPin, HIGH);

	Serial.println();
	Serial.println();
	Serial.print("Connecting to: ");
	Serial.println(ssid);

	WiFi.begin(ssid, password);
	delay(5000);

	/*
	The following four line of the
	code will assign a Static IP Address to
	the ESP Module. If you do not want this,
	comment out the following four lines.
	*/

	IPAddress ip(192,168,1,254);
	IPAddress gateway(192,168,1,1);
	IPAddress subnet(255,255,255,0);
	WiFi.config(ip, gateway, subnet);
	delay(5000);

	while (WiFi.status() != WL_CONNECTED)
	{
	delay(100);
	Serial.print("*");
	}
	Serial.println("");
	Serial.println("WiFi connected");

	// Start the server
	ESPserver.begin();
	Serial.println("Server started");

	// Print the IP address
	Serial.print("The URL to control ESP8266: ");
	Serial.print("http://");
	Serial.print(WiFi.localIP());
	}

	void loop()
	{
	// Check if a client has connected
	WiFiClient client = ESPserver.available();
	if (!client)
	{
	return;
	}

	// Wait until the client sends some data
	Serial.println("New Client");
	while(!client.available())
	{
	delay(1);
	}

	// Read the first line of the request
	String request = client.readStringUntil('\r');
	Serial.println(request);
	client.flush();

	// Match the request

	int value = LOW;
	if (request.indexOf("/RELAYON") != -1)
	{
	Serial.println("LAMP is ON");
	digitalWrite(relayPin, LOW);
	value = LOW;
	}
	if (request.indexOf("/RELAYOFF") != -1)
	{
	Serial.println("LAMP is OFF");
	digitalWrite(relayPin, HIGH);
	value = HIGH;
	}

	// Return the response
	client.println("HTTP/1.1 200 OK");
	client.println("Content-Type: text/html");
	client.println(""); // IMPORTANT
	client.println("<!DOCTYPE HTML>");
	client.println("<html>");

	client.print("Status of the Lamp: ");

	if(value == LOW)
	{
	client.print("ON");
	}
	else
	{
	client.print("OFF");
	}

	delay(1);
	//client.stop();
	Serial.println("Client disconnected");
	Serial.println("");
	}