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Remote Controlling LED Using NodeMCU (ESP8266) Board: https://blog.vaibhavpandey.com/2018/10/remote-controlling-led-using-nodemcu.html
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| #include <ESP8266WiFi.h> | |
| int PIN_N = 15; // pin on which LED is connected | |
| int PIN_MODE = LOW; | |
| int SERIAL_BAUD = 115200; | |
| const char* WIFI_SSID = "ESP8266"; // your WiFi SSID | |
| const char* WIFI_PASSWORD = "nodemcutest"; // your WiFi password | |
| WiFiServer server(80); | |
| void setup() { | |
| // put your setup code here, to run once: | |
| pinMode(PIN_N, OUTPUT); | |
| delay(1000); | |
| connect(); | |
| server.begin(); | |
| } | |
| void loop() { | |
| // put your main code here, to run repeatedly: | |
| WiFiClient client = server.available(); | |
| if (client) { | |
| bool blank = true; | |
| String headers; | |
| while (client.connected()) { | |
| if (client.available()) { | |
| char c = client.read(); | |
| headers += c; | |
| if ((c == '\n') && blank) { | |
| Serial.println(headers); | |
| if (headers.indexOf("GET /state/OFF") == 0) { | |
| PIN_MODE = LOW; | |
| } else if (headers.indexOf("GET /state/ON") == 0) { | |
| PIN_MODE = HIGH; | |
| } | |
| digitalWrite(PIN_N, PIN_MODE); | |
| respond(client); | |
| break; | |
| } | |
| if (c == '\n') { | |
| blank = true; | |
| } else if (c != '\r') { | |
| blank = false; | |
| } | |
| } | |
| } | |
| delay(1); | |
| client.stop(); | |
| } | |
| } | |
| void connect() { | |
| Serial.begin(SERIAL_BAUD); | |
| Serial.println(); | |
| Serial.print("Connecting to "); | |
| Serial.print(WIFI_SSID); | |
| Serial.print('.'); | |
| WiFi.begin(WIFI_SSID, WIFI_PASSWORD); | |
| while (WiFi.status() != WL_CONNECTED) { | |
| delay(500); | |
| Serial.print('.'); | |
| } | |
| Serial.println("Connected!"); | |
| Serial.print("You may now open http://"); | |
| Serial.print(WiFi.localIP()); | |
| Serial.println(" in your browser."); | |
| Serial.println(); | |
| } | |
| void respond(WiFiClient client) { | |
| client.println("HTTP/1.1 200 OK"); | |
| client.println("Content-type: text/html"); | |
| client.println("Connection: close"); | |
| client.println(); | |
| client.print("<!doctype html>" | |
| "<html lang=\"en\">" | |
| "<head>" | |
| "<meta charset=\"utf-8\">" | |
| "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1, shrink-to-fit=no\">" | |
| "<title>ESP8266 - LED (Remote Control)</title>" | |
| "<style>" | |
| "body { font-family: 'Roboto', -apple-system, 'Segoe UI', sans-serif; font-size: 12pt; margin: 0, padding: 8px 24px; text-align: center }" | |
| "</style>" | |
| "</head>" | |
| "<body>" | |
| "<main>"); | |
| client.print("<p>Current <strong>LED</strong> state is:</p>"); | |
| client.print(PIN_MODE == HIGH ? "<h1 style=\"color: green\">ON</h1>" : "<h1 style=\"color: red\">OFF</h1>"); | |
| client.print("<a href=\"/state/"); | |
| client.print(PIN_MODE != HIGH ? "ON" : "OFF"); | |
| client.print("\">TURN "); | |
| client.print(PIN_MODE != HIGH ? "ON" : "OFF"); | |
| client.print("</a>" | |
| "</main>" | |
| "</body>" | |
| "</html>"); | |
| client.println(); | |
| } |
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