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/*
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ESP32 mDNS responder sample |
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This is an example of an HTTP server that is accessible |
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via http://esp32.local URL thanks to mDNS responder.
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Instructions: |
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- Update WiFi SSID and password as necessary. |
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- Flash the sketch to the ESP32 board |
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- Install host software: |
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- For Linux, install Avahi (http://avahi.org/).
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- For Windows, install Bonjour (http://www.apple.com/support/bonjour/).
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- For Mac OSX and iOS support is built in through Bonjour already. |
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- Point your browser to http://esp32.local, you should see a response.
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*/ |
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#include <WiFi.h> |
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#include <ESPmDNS.h> |
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#include <WiFiClient.h> |
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#include "esp32-hal-ledc.h" |
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const char* ssid = "ssid"; |
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const char* password = "password"; |
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#define SERVO_LOW 4000 |
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#define SERVO_HIGH 8000 |
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#define SERVO_CHANNEL 5 |
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#define TIMER_WIDTH 16 |
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// TCP server at port 80 will respond to HTTP requests
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WiFiServer server(80); |
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void setup(void) |
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{ |
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Serial.begin(115200); |
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// Connect to WiFi network
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WiFi.begin(ssid, password); |
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Serial.println(""); |
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// Wait for connection
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while (WiFi.status() != WL_CONNECTED) { |
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delay(500); |
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Serial.print("."); |
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} |
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Serial.println(""); |
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Serial.print("Connected to "); |
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Serial.println(ssid); |
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Serial.print("IP address: "); |
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Serial.println(WiFi.localIP()); |
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// Set up mDNS responder:
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// - first argument is the domain name, in this example
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// the fully-qualified domain name is "esp8266.local"
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// - second argument is the IP address to advertise
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// we send our IP address on the WiFi network
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if (!MDNS.begin("esp32")) { |
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Serial.println("Error setting up MDNS responder!"); |
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while(1) { |
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delay(1000); |
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} |
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} |
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Serial.println("mDNS responder started"); |
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// Start TCP (HTTP) server
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server.begin(); |
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Serial.println("TCP server started"); |
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// Add service to MDNS-SD
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MDNS.addService("http", "tcp", 80); |
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ledcSetup(1, 50, TIMER_WIDTH); |
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ledcAttachPin(SERVO_CHANNEL,1); |
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ledcWrite(1, SERVO_LOW); |
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delay(1000); |
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ledcDetachPin(SERVO_CHANNEL); |
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} |
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void loop(void) |
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{ |
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// Check if a client has connected
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WiFiClient client = server.available(); |
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if (!client) { |
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return; |
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} |
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Serial.println(""); |
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Serial.println("New client"); |
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// Wait for data from client to become available
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while(client.connected() && !client.available()){ |
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delay(1); |
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} |
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// Read the first line of HTTP request
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String req = client.readStringUntil('\r'); |
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// First line of HTTP request looks like "GET /path HTTP/1.1"
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// Retrieve the "/path" part by finding the spaces
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int addr_start = req.indexOf(' '); |
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int addr_end = req.indexOf(' ', addr_start + 1); |
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if (addr_start == -1 || addr_end == -1) { |
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Serial.print("Invalid request: "); |
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Serial.println(req); |
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return; |
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} |
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req = req.substring(addr_start + 1, addr_end); |
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Serial.print("Request: "); |
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Serial.println(req); |
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client.flush(); |
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String s; |
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if (req == "/") |
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{ |
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IPAddress ip = WiFi.localIP(); |
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String ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]); |
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s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>Hello from ESP32 at "; |
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s += ipStr; |
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s += "</html>\r\n\r\n"; |
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Serial.println("Sending 200"); |
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} |
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else if (req == "/push") { |
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IPAddress ip = WiFi.localIP(); |
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String ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]); |
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s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>Hello, pushing!"; |
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s += "</html>\r\n\r\n"; |
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Serial.println("/push"); |
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ledcAttachPin(SERVO_CHANNEL,1); |
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ledcWrite(1, SERVO_HIGH); |
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delay(1500); |
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ledcWrite(1, SERVO_LOW); |
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delay(1500); |
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ledcDetachPin(SERVO_CHANNEL); |
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} |
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else |
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{ |
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s = "HTTP/1.1 404 Not Found\r\n\r\n"; |
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Serial.println("Sending 404"); |
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} |
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client.print(s); |
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Serial.println("Done with client"); |
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} |
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