ESP8266 NodeMCU แบบ Server

#include 
#include 

const char* ssid = "wifi_ssid";
const char* password = "wifi_password";
ESP8266WebServer server(80);

void handle_index() {
server.send(200, "text/html", "
Hello World ESP8266

");
}

void setup(void) {
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.println(".");
}
Serial.println(WiFi.localIP());

server.on("/", handle_index);
server.begin();
}
void loop(void) {
server.handleClient();
}

สั่ง ESP8266 เปิด/ปิด ไฟ LED ผ่าน Web browser
การต่อวงจร Arduino ESP8266

#include
#include

const char* ssid = "wifi_ssid";
const char* password = "wifi_password";

const int led = D2;
int state = 0;
String status_led = "OFF";

ESP8266WebServer server(80);

void handle_hello() {

String value = server.arg("a");
String value2 = server.arg("b");
server.send(200, "text/html", "A = " + value + " : B = " + value2);
Serial.println(value + ":" + value2);
}

void handle_led() {
state = server.arg("led").toInt();
status_led = "ON";
if (state == 1) {
digitalWrite(led, 1);
status_led = "ON";
} else {
digitalWrite(led, 0);
status_led = "OFF";
}
server.send(200, "text/plain", "LED is " + status_led);
}

void handle_control() {
String html = "LED Status = " + status_led;
server.send(200, "text/html", "LED is " + status_led + " ON  OFF ");
}

void setup(void) {
Serial.begin(115200);
Serial.println("");
pinMode(led, OUTPUT);

// Connect to WiFi network
WiFi.begin(ssid, password);

// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());

server.on("/", []() {
server.send(200, "text/html", "

ESP8266 NodeMCU Tutor

");
});


server.on("/led", handle_led);
server.on("/hello", handle_hello);
server.on("/control", handle_control);

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

void loop(void) {
// check for incomming client connections frequently in the main loop:
server.handleClient();
}

คลิปวีดีโอสอน Arduino ESP8266 NodeMCU Server : การใช้งาน NodeMCU แบบ Server