Nicholas Outram / Mbed OS ELEC350-CWTEMPLATE-2018

Demo of the sample LCD class, BMP280 Sensor and network with power on self test. Requires a network connectionb

Dependencies:   BMP280 TextLCD BME280

Networkbits.cpp@6:9a95a39d1cce, 2018-11-24 (annotated)

Committer:
noutram
Date:
Sat Nov 24 08:44:15 2018 +0000
Revision:
6:9a95a39d1cce
simplify;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
noutram 6:9a95a39d1cce 1 #include "sample_hardware.hpp"
noutram 6:9a95a39d1cce 2 #include "Networkbits.hpp"
noutram 6:9a95a39d1cce 3
noutram 6:9a95a39d1cce 4 //Network thread - responsible for listening for connectinos and responding with updated tempature values
noutram 6:9a95a39d1cce 5 void networktest()
noutram 6:9a95a39d1cce 6 {
noutram 6:9a95a39d1cce 7 //This only runs when BOTH switches are pressed down
noutram 6:9a95a39d1cce 8 if ((SW1 == 0) || (SW2 == 0)) return;
noutram 6:9a95a39d1cce 9
noutram 6:9a95a39d1cce 10 lcd.cls();
noutram 6:9a95a39d1cce 11 lcd.printf("Basic HTTP server example\n");
noutram 6:9a95a39d1cce 12
noutram 6:9a95a39d1cce 13 //Configure an ethernet connection
noutram 6:9a95a39d1cce 14 EthernetInterface eth;
noutram 6:9a95a39d1cce 15 eth.set_network(IP, NETMASK, GATEWAY);
noutram 6:9a95a39d1cce 16 eth.connect();
noutram 6:9a95a39d1cce 17 lcd.printf("The target IP address is '%s'\n", eth.get_ip_address());
noutram 6:9a95a39d1cce 18
noutram 6:9a95a39d1cce 19 //Now setup a web server
noutram 6:9a95a39d1cce 20 TCPServer srv; //TCP/IP Server
noutram 6:9a95a39d1cce 21 TCPSocket clt_sock; //Socket for communication
noutram 6:9a95a39d1cce 22 SocketAddress clt_addr; //Address of incoming connection
noutram 6:9a95a39d1cce 23
noutram 6:9a95a39d1cce 24 /* Open the server on ethernet stack */
noutram 6:9a95a39d1cce 25 srv.open(&eth);
noutram 6:9a95a39d1cce 26
noutram 6:9a95a39d1cce 27 /* Bind the HTTP port (TCP 80) to the server */
noutram 6:9a95a39d1cce 28 srv.bind(eth.get_ip_address(), 80);
noutram 6:9a95a39d1cce 29
noutram 6:9a95a39d1cce 30 /* Can handle 5 simultaneous connections */
noutram 6:9a95a39d1cce 31 srv.listen(5);
noutram 6:9a95a39d1cce 32
noutram 6:9a95a39d1cce 33 //KEEP RESPONDING WHILE THE SWITCHES ARE PRESSED
noutram 6:9a95a39d1cce 34 while ((SW1 == 1) && (SW2 == 1)) {
noutram 6:9a95a39d1cce 35 using namespace std;
noutram 6:9a95a39d1cce 36 lcd.cls();
noutram 6:9a95a39d1cce 37 lcd.printf("Open 10.0.0.1 in a browser\n");
noutram 6:9a95a39d1cce 38
noutram 6:9a95a39d1cce 39 //Block and wait on an incoming connection
noutram 6:9a95a39d1cce 40 srv.accept(&clt_sock, &clt_addr);
noutram 6:9a95a39d1cce 41 printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
noutram 6:9a95a39d1cce 42
noutram 6:9a95a39d1cce 43 //Uses a C++ string to make it easier to concatinate
noutram 6:9a95a39d1cce 44 string response;
noutram 6:9a95a39d1cce 45 //This is a C string
noutram 6:9a95a39d1cce 46 char ldr_str[64];
noutram 6:9a95a39d1cce 47
noutram 6:9a95a39d1cce 48 //Read the temperature value - note that getParameters() is thread safe
noutram 6:9a95a39d1cce 49 float temp = sensor.getTemperature();
noutram 6:9a95a39d1cce 50
noutram 6:9a95a39d1cce 51 //Convert to a C String
noutram 6:9a95a39d1cce 52 sprintf(ldr_str, "%5.3f", temp );
noutram 6:9a95a39d1cce 53 printf("LDR: %5.3f\n\r", temp);
noutram 6:9a95a39d1cce 54
noutram 6:9a95a39d1cce 55 //Build the C++ string response
noutram 6:9a95a39d1cce 56 response = HTTP_MESSAGE_BODY1;
noutram 6:9a95a39d1cce 57 response += ldr_str;
noutram 6:9a95a39d1cce 58 response += HTTP_MESSAGE_BODY2;
noutram 6:9a95a39d1cce 59
noutram 6:9a95a39d1cce 60 //Send static HTML response (as a C string)
noutram 6:9a95a39d1cce 61 clt_sock.send(response.c_str(), response.size()+6);
noutram 6:9a95a39d1cce 62 }
noutram 6:9a95a39d1cce 63
noutram 6:9a95a39d1cce 64 printf("Release BOTH switches\n");
noutram 6:9a95a39d1cce 65 lcd.printf("Release BOTH switches\n");
noutram 6:9a95a39d1cce 66 while ((SW1 != 0) && (SW2 != 0));
noutram 6:9a95a39d1cce 67 wait(0.5); //debounce
noutram 6:9a95a39d1cce 68 }