/* Web Server A simple web server that shows the value of the analog input pins. using an Arduino Wiznet Ethernet shield. Circuit: * Ethernet shield attached to pins 10, 11, 12, 13 * Analog inputs attached to pins A0 through A5 (optional) created 18 Dec 2009 by David A. Mellis modified 9 Apr 2012 by Tom Igoe modified 02 Sept 2015 by Arturo Guadalupi */ #include #include // Enter a MAC address and IP address for your controller below. // The IP address will be dependent on your local network: byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; IPAddress ip(192, 168, 0, 103); // Initialize the Ethernet server library // with the IP address and port you want to use // (port 80 is default for HTTP): EthernetServer server(80); void setup() { // Open serial communications and wait for port to open: Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } // start the Ethernet connection and the server: Ethernet.begin(mac, ip); server.begin(); Serial.println("--------------------"); //added 16Feb2016 Serial.print("server is at "); Serial.println(Ethernet.localIP()); } void loop() { String stringIn; //used to look for 'POST' // listen for incoming clients EthernetClient client = server.available(); if (client) { Serial.println("==================="); //added 16Feb2016 Serial.println("new client"); // an http request ends with a blank line boolean currentLineIsBlank = true; while (client.connected()) { if (client.available()) { char c = client.read(); Serial.write(c); stringIn += c; // if you've gotten to the end of the line (received a newline // character) and the line is blank, the http request has ended, // so you can send a reply // // the above is only true for GET http request if (c == '\n' && currentLineIsBlank) { //for POST http request //there is a blank line separating the header from the message //that message contains the POST data if (stringIn.indexOf("POST") >= 0) { //this is a POST http header //Serial.print("index of POST="); //Serial.println(stringIn.indexOf("POST")); //so keep reading String stringPOST = ""; while (client.available()) { c = client.read(); stringPOST += c; } // Serial.println(stringPOST); } // send a http response header and message client.println("HTTP/1.1 200 OK"); client.println("Content-Type: text/html"); client.println("Connection: close"); // the connection will be closed after completion of the response client.println(); client.println(""); client.println("
"); client.println("
"); client.println("
"); client.println(""); client.println("
"); client.println(""); break; } if (c == '\n') { // you're starting a new line currentLineIsBlank = true; } else if (c != '\r') { // you've gotten a character on the current line currentLineIsBlank = false; } else //added 16Feb2016 { // you've gotten a carriage return } } //if (client.available()) } //while (client.connected()) // give the web browser time to receive the data delay(10); // close the connection: client.stop(); Serial.println("client disconnected"); Serial.println("==================="); //added 16Feb2016 //clear for the next read stringIn = ""; Ethernet.maintain(); } }