Alix Germany / ELEC350-Practicals-FZ429

newest version

Networkbits.cpp@9:ca8090c7868e, 2018-12-07 (annotated)

Committer:
Alix955
Date:
Fri Dec 07 13:07:08 2018 +0000
Revision:
9:ca8090c7868e
Parent:
8:df979097cc71 
updated;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 8:df979097cc71 1 #include "sample_hardware.hpp"
noutram 8:df979097cc71 2 #include "Networkbits.hpp"
Alix955 9:ca8090c7868e 3 #include "ntp-client/NTPClient.h"
noutram 8:df979097cc71 4
noutram 8:df979097cc71 5 //Network thread - responsible for listening for connectinos and responding with updated tempature values
noutram 8:df979097cc71 6 void networktest()
noutram 8:df979097cc71 7 {
noutram 8:df979097cc71 8 //This only runs when BOTH switches are pressed down
Alix955 9:ca8090c7868e 9 if (SW2 == 0) return;
noutram 8:df979097cc71 10
noutram 8:df979097cc71 11 lcd.cls();
noutram 8:df979097cc71 12 lcd.printf("Basic HTTP server example\n");
noutram 8:df979097cc71 13
noutram 8:df979097cc71 14 //Configure an ethernet connection
noutram 8:df979097cc71 15 EthernetInterface eth;
noutram 8:df979097cc71 16 eth.set_network(IP, NETMASK, GATEWAY);
noutram 8:df979097cc71 17 eth.connect();
noutram 8:df979097cc71 18 lcd.printf("The target IP address is '%s'\n", eth.get_ip_address());
noutram 8:df979097cc71 19
Alix955 9:ca8090c7868e 20 NTPClient ntp(&eth);
Alix955 9:ca8090c7868e 21
noutram 8:df979097cc71 22 //Now setup a web server
noutram 8:df979097cc71 23 TCPServer srv; //TCP/IP Server
noutram 8:df979097cc71 24 TCPSocket clt_sock; //Socket for communication
noutram 8:df979097cc71 25 SocketAddress clt_addr; //Address of incoming connection
noutram 8:df979097cc71 26
noutram 8:df979097cc71 27 /* Open the server on ethernet stack */
noutram 8:df979097cc71 28 srv.open(&eth);
noutram 8:df979097cc71 29
noutram 8:df979097cc71 30 /* Bind the HTTP port (TCP 80) to the server */
noutram 8:df979097cc71 31 srv.bind(eth.get_ip_address(), 80);
noutram 8:df979097cc71 32
noutram 8:df979097cc71 33 /* Can handle 5 simultaneous connections */
noutram 8:df979097cc71 34 srv.listen(5);
noutram 8:df979097cc71 35
noutram 8:df979097cc71 36 //KEEP RESPONDING WHILE THE SWITCHES ARE PRESSED
Alix955 9:ca8090c7868e 37 while (SW2 == 1) {
noutram 8:df979097cc71 38 using namespace std;
noutram 8:df979097cc71 39 lcd.cls();
noutram 8:df979097cc71 40 lcd.printf("Open 10.0.0.1 in a browser\n");
noutram 8:df979097cc71 41
noutram 8:df979097cc71 42 //Block and wait on an incoming connection
noutram 8:df979097cc71 43 srv.accept(&clt_sock, &clt_addr);
noutram 8:df979097cc71 44 printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
noutram 8:df979097cc71 45
noutram 8:df979097cc71 46 //Uses a C++ string to make it easier to concatinate
noutram 8:df979097cc71 47 string response;
noutram 8:df979097cc71 48 //This is a C string
noutram 8:df979097cc71 49 char ldr_str[64];
noutram 8:df979097cc71 50
noutram 8:df979097cc71 51 //Read the temperature value - note that getParameters() is thread safe
noutram 8:df979097cc71 52 float temp = sensor.getTemperature();
noutram 8:df979097cc71 53
noutram 8:df979097cc71 54 //Convert to a C String
noutram 8:df979097cc71 55 sprintf(ldr_str, "%5.3f", temp );
noutram 8:df979097cc71 56 printf("LDR: %5.3f\n\r", temp);
noutram 8:df979097cc71 57
noutram 8:df979097cc71 58 //Build the C++ string response
noutram 8:df979097cc71 59 response = HTTP_MESSAGE_BODY1;
noutram 8:df979097cc71 60 response += ldr_str;
noutram 8:df979097cc71 61 response += HTTP_MESSAGE_BODY2;
noutram 8:df979097cc71 62
noutram 8:df979097cc71 63 //Send static HTML response (as a C string)
noutram 8:df979097cc71 64 clt_sock.send(response.c_str(), response.size()+6);
noutram 8:df979097cc71 65 }
noutram 8:df979097cc71 66
noutram 8:df979097cc71 67 printf("Release BOTH switches\n");
noutram 8:df979097cc71 68 lcd.printf("Release BOTH switches\n");
Alix955 9:ca8090c7868e 69 while (SW2 != 0);
noutram 8:df979097cc71 70 wait(0.5); //debounce
noutram 8:df979097cc71 71 }