Networkbits.cpp

00001 #include "sample_hardware.hpp"
00002 #include "Networkbits.hpp"
00003 
00004 //Network thread - responsible for listening for connectinos and responding with updated tempature values
00005 void networktest()
00006 {
00007     //This only runs when BOTH switches are pressed down
00008     if ((SW1 == 0) || (SW2 == 0)) return;
00009     
00010     lcd.cls();
00011     lcd.printf("Basic HTTP server example\n");
00012     
00013     //Configure an ethernet connection
00014     EthernetInterface eth;
00015     eth.set_network(IP, NETMASK, GATEWAY);
00016     eth.connect();
00017     lcd.printf("The target IP address is '%s'\n", eth.get_ip_address());
00018     
00019     //Now setup a web server
00020     TCPServer srv;           //TCP/IP Server
00021     TCPSocket clt_sock;      //Socket for communication
00022     SocketAddress clt_addr;  //Address of incoming connection
00023     
00024     /* Open the server on ethernet stack */
00025     srv.open(&eth);
00026     
00027     /* Bind the HTTP port (TCP 80) to the server */
00028     srv.bind(eth.get_ip_address(), 80);
00029     
00030     /* Can handle 5 simultaneous connections */
00031     srv.listen(5);
00032     
00033     //KEEP RESPONDING WHILE THE SWITCHES ARE PRESSED
00034     while ((SW1 == 1) && (SW2 == 1)) {
00035         using namespace std;
00036         lcd.cls();
00037         lcd.printf("Open 10.0.0.1 in a browser\n");
00038         
00039         //Block and wait on an incoming connection
00040         srv.accept(&clt_sock, &clt_addr);
00041         printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
00042         
00043         //Uses a C++ string to make it easier to concatinate
00044         string response;
00045         //This is a C string
00046         char ldr_str[64];
00047         
00048         //Read the temperature value - note that getParameters() is thread safe
00049         float temp = sensor.getTemperature();
00050         
00051         //Convert to a C String
00052         sprintf(ldr_str, "%5.3f", temp );
00053         printf("LDR: %5.3f\n\r", temp);
00054         
00055         //Build the C++ string response
00056         response = HTTP_MESSAGE_BODY1;
00057         response += ldr_str;
00058         response += HTTP_MESSAGE_BODY2;
00059         
00060         //Send static HTML response (as a C string)
00061         clt_sock.send(response.c_str(), response.size()+6);    
00062     }
00063     
00064     printf("Release BOTH switches\n");
00065     lcd.printf("Release BOTH switches\n");
00066     while ((SW1 != 0) && (SW2 != 0));
00067     wait(0.5); //debounce
00068 }