ESP server code added (#48)

ESP_Server/server.ino

@@ -0,0 +1,54 @@
+#include <ESP8266WiFi.h>
+#include <WiFiClient.h>
+#include <ESP8266WebServer.h>
+
+const char* ssid = "PSLab_ESP";
+
+ESP8266WebServer server(80);
+
+//Simple http server to handle different requests on endpoints
+
+//Method to handle root endpoint
+void handleRoot() {
+  server.send(200, "text/plain", "hello PSLab");
+}
+
+//Method to handle 404 error
+void handleNotFound() {
+  String message = "File Not Found\n\n";
+  message += "URI: ";
+  message += server.uri();
+  message += "\nMethod: ";
+  message += (server.method() == HTTP_GET) ? "GET" : "POST";
+  message += "\nArguments: ";
+  message += server.args();
+  message += "\n";
+  for (uint8_t i = 0; i < server.args(); i++) {
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+  server.send(404, "text/plain", message);
+}
+
+void setup(void) {
+  //Create wifi accesspoint
+  WiFi.softAP(ssid);
+  IPAddress myIP = WiFi.softAPIP();
+
+  //Declare endpoints here
+  server.on("/", handleRoot);
+
+  //endpoint to get vesion of PSLab
+  server.on("/version", []() {
+    server.send(200, "text/plain", "This will return PSLab version");
+  });
+
+  //end point for 404 error
+  server.onNotFound(handleNotFound);
+
+  //initiate the server
+  server.begin();
+}
+
+void loop(void) {
+  server.handleClient();
+}