pinglunliao/NodeMcuBlink.ino

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

const char* ssid = "your_wifi_ap_ssid";
const char* password = "your_wifi_ap_password";

int ledPin = LED_BUILTIN;
WiFiServer server(80);

void setup() {
  Serial.begin(115200);
  delay(10);

  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, HIGH);

  // Connect to WiFi network
  Serial.println();
  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");

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

  // Print the IP address
  Serial.print("Use this URL to connect: ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");

}

void loop() {
  // Check if a client has connected
  WiFiClient client = server.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 = HIGH;
  if (request.indexOf("/LED=ON") != -1)  {
    digitalWrite(ledPin, LOW);
    value = LOW;
  }
  if (request.indexOf("/LED=OFF") != -1)  {
    digitalWrite(ledPin, HIGH);
    value = HIGH;
  }

  // Return the response
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");

  client.print("Led pin is now: ");

  if(value == LOW) {
    client.print("On");
  } else {
    client.print("Off");
  }
  client.println("<br><br>");
  client.println("<a href=\"/LED=ON\"\"><button>Turn On </button></a>");
  client.println("<a href=\"/LED=OFF\"\"><button>Turn Off </button></a><br />");
  client.println("</html>");

  delay(1);
  Serial.println("Client disonnected");
  Serial.println("");
}
	#include <ESP8266WiFi.h>

	const char* ssid = "your_wifi_ap_ssid";
	const char* password = "your_wifi_ap_password";

	int ledPin = LED_BUILTIN;
	WiFiServer server(80);

	void setup() {
	Serial.begin(115200);
	delay(10);

	pinMode(ledPin, OUTPUT);
	digitalWrite(ledPin, HIGH);

	// Connect to WiFi network
	Serial.println();
	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");

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

	// Print the IP address
	Serial.print("Use this URL to connect: ");
	Serial.print("http://");
	Serial.print(WiFi.localIP());
	Serial.println("/");

	}

	void loop() {
	// Check if a client has connected
	WiFiClient client = server.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 = HIGH;
	if (request.indexOf("/LED=ON") != -1) {
	digitalWrite(ledPin, LOW);
	value = LOW;
	}
	if (request.indexOf("/LED=OFF") != -1) {
	digitalWrite(ledPin, HIGH);
	value = HIGH;
	}

	// Return the response
	client.println("HTTP/1.1 200 OK");
	client.println("Content-Type: text/html");
	client.println(""); // do not forget this one
	client.println("<!DOCTYPE HTML>");
	client.println("<html>");

	client.print("Led pin is now: ");

	if(value == LOW) {
	client.print("On");
	} else {
	client.print("Off");
	}
	client.println("<br><br>");
	client.println("<a href=\"/LED=ON\"\"><button>Turn On </button></a>");
	client.println("<a href=\"/LED=OFF\"\"><button>Turn Off </button></a><br />");
	client.println("</html>");

	delay(1);
	Serial.println("Client disonnected");
	Serial.println("");
	}