#include const char* ssid = "WLAN-845273"; const char* password = "6807300150057711"; unsigned long ulReqcount; unsigned long ulReconncount; // Create an instance of the server on Port 80 WiFiServer server(80); void setup() { // setup globals ulReqcount = 0; ulReconncount = 0; // prepare GPIO1 pinMode(0, OUTPUT); digitalWrite(0, 0); // prepare GPIO2 pinMode(2, OUTPUT); digitalWrite(2, 0); // start serial Serial.begin(9600); delay(1); // inital connect WiFi.mode(WIFI_STA); WiFiStart(); } void WiFiStart() { ulReconncount++; // Connect to WiFi network Serial.println(); Serial.println(); Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected"); // Start the server server.begin(); Serial.println("Server started"); // Print the IP address Serial.println(WiFi.localIP()); } void loop() { // check if WLAN is connected if (WiFi.status() != WL_CONNECTED) { WiFiStart(); } // Check if a client has connected WiFiClient client = server.available(); if (!client) { return; } // Wait until the client sends some data Serial.println("new client"); unsigned long ultimeout = millis() + 250; while (!client.available() && (millis() < ultimeout) ) { delay(1); } if (millis() > ultimeout) { Serial.println("client connection time-out!"); return; } // Read the first line of the request String sRequest = client.readStringUntil('\r'); //Serial.println(sRequest); client.flush(); // stop client, if request is empty if (sRequest == "") { Serial.println("empty request! - stopping client"); client.stop(); return; } // get path; end of path is either space or ? // Syntax is e.g. GET /?pin=MOTOR1STOP HTTP/1.1 String sPath = "", sParam = "", sCmd = ""; String sGetstart = "GET "; int iStart, iEndSpace, iEndQuest; iStart = sRequest.indexOf(sGetstart); if (iStart >= 0) { iStart += +sGetstart.length(); iEndSpace = sRequest.indexOf(" ", iStart); iEndQuest = sRequest.indexOf("?", iStart); // are there parameters? if (iEndSpace > 0) { if (iEndQuest > 0) { // there are parameters sPath = sRequest.substring(iStart, iEndQuest); sParam = sRequest.substring(iEndQuest, iEndSpace); } else { // NO parameters sPath = sRequest.substring(iStart, iEndSpace); } } } /////////////////////////////////////////////////////////////////////////////// // output parameters to serial, you may connect e.g. an Arduino and react on it /////////////////////////////////////////////////////////////////////////////// if (sParam.length() > 0) { int iEqu = sParam.indexOf("="); if (iEqu >= 0) { sCmd = sParam.substring(iEqu + 1, sParam.length()); Serial.println(sCmd); } } /////////////////////////// // format the html response /////////////////////////// String sResponse, sHeader; //////////////////////////// // 404 for non-matching path //////////////////////////// if (sPath != "/") { sResponse = "404 Not Found

Not Found

The requested URL was not found on this server.

"; sHeader = "HTTP/1.1 404 Not found\r\n"; sHeader += "Content-Length: "; sHeader += sResponse.length(); sHeader += "\r\n"; sHeader += "Content-Type: text/html\r\n"; sHeader += "Connection: close\r\n"; sHeader += "\r\n"; } /////////////////////// // format the html page /////////////////////// else { ulReqcount++; sResponse = "Mein ESP8266"; sResponse += ""; sResponse += ""; sResponse += "

ESP8266 Steuerung

"; sResponse += "Mein erstes Projekt mit dem ESP8266
"; sResponse += "David Sievert, 29.09.2016
"; sResponse += ""; sResponse += "

Relais 1:

"; sResponse += "

Relais 2:

"; ////////////////////// // react on parameters ////////////////////// if (sCmd.length() > 0) { // write received command to html page sResponse += "Letzte Aktion: " + sCmd + "
"; // switch GPIO if (sCmd.indexOf("SCHALTER1ON") >= 0) { digitalWrite(2, 0); } else if (sCmd.indexOf("SCHALTER1OFF") >= 0) { digitalWrite(2, 1); } if (sCmd.indexOf("SCHALTER2ON") >= 0) { digitalWrite(0, 0); } else if (sCmd.indexOf("SCHALTER2OFF") >= 0) { digitalWrite(0, 1); } } sHeader = "HTTP/1.1 200 OK\r\n"; sHeader += "Content-Length: "; sHeader += sResponse.length(); sHeader += "\r\n"; sHeader += "Content-Type: text/html\r\n"; sHeader += "Connection: close\r\n"; sHeader += "\r\n"; } // Send the response to the client client.print(sHeader); client.print(sResponse); // and stop the client client.stop(); Serial.println("Client disonnected"); }