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Simple UDP Server for Smart Plug
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>
WiFiUDP Udp;
const char* ssid = "----------";
const char* password = "--------------";
IPAddress local_ip = {192,168,1,200};
IPAddress gateway = {192,168,1,1};
IPAddress subnet = {255,255,255,0};
int relayPin = 5;
int ledPin = 16;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
delay(10);
pinMode(relayPin, OUTPUT);
pinMode(ledPin, OUTPUT);
digitalWrite(relayPin, LOW);
digitalWrite(ledPin, HIGH);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
//if not need fix ip please comment
//WiFi.config(local_ip, gateway, subnet);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
// Start the server
Udp.begin(49999);
Serial.println("UDP Server started");
// Print the IP address
Serial.println(WiFi.localIP());
}
void loop() {
// Check if a client has connected
Udp.parsePacket();
while(Udp.available()){
Serial.print(Udp.remoteIP());
Serial.print(" : ");
String req = Udp.readStringUntil('\r');
//char req = Udp.read();
Serial.println(req);
if (req.indexOf("on") != -1) {
digitalWrite(relayPin, HIGH);
digitalWrite(ledPin, LOW);
}
if (req.indexOf("off") != -1) {
digitalWrite(relayPin, LOW);
digitalWrite(ledPin, HIGH);
}
Udp.flush();
delay(5);
}
}
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