ELEC350 - Team Q
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Task671
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Task671-mbedos-FZ429-TCP-dynamic
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University of Plymouth - Stages 1, 2 and 3
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main.cpp
00001 #if !FEATURE_LWIP 00002 #error [NOT_SUPPORTED] LWIP not supported for this target 00003 #endif 00004 00005 #include "mbed.h" 00006 #include "EthernetInterface.h" 00007 #include "TCPServer.h" 00008 #include "TCPSocket.h" 00009 #include <iostream> 00010 #include <string> 00011 00012 #define HTTP_STATUS_LINE "HTTP/1.0 200 OK" 00013 #define HTTP_HEADER_FIELDS "Content-Type: text/html; charset=utf-8" 00014 #define HTTP_MESSAGE_BODY1 "" \ 00015 "<html>" "\r\n" \ 00016 " <body style=\"display:flex;text-align:center\">" "\r\n" \ 00017 " <div style=\"margin:auto\">" "\r\n" \ 00018 " <h1>Team-Q Elec351</h1>" "\r\n" \ 00019 " <p>Time : " \ 00020 00021 #define HTTP_MESSAGE_BODY2 "" \ 00022 "  Date : " \ 00023 00024 #define HTTP_MESSAGE_BODY3 "" \ 00025 "</p>" "\r\n" \ 00026 " <p>Light levels are : " "\r\n" \ 00027 00028 #define HTTP_MESSAGE_BODY4 "" \ 00029 "</p>" "\r\n" \ 00030 " <p>Current Temperature : " "\r\n" \ 00031 00032 #define HTTP_MESSAGE_BODY5 "" \ 00033 "</p>" "\r\n" \ 00034 " <p>Current Pressure : " "\r\n" \ 00035 00036 #define HTTP_MESSAGE_BODY6 "" \ 00037 "</p>" "\r\n" \ 00038 " </div>" "\r\n" \ 00039 " </body>" "\r\n" \ 00040 "</html>" 00041 00042 #define HTTP_RESPONSE HTTP_STATUS_LINE "\r\n" \ 00043 HTTP_HEADER_FIELDS "\r\n" \ 00044 "\r\n" \ 00045 HTTP_MESSAGE_BODY "\r\n" 00046 00047 #define IP "10.0.0.10" 00048 #define NETMASK "255.0.0.0" 00049 #define GATEWAY "10.0.0.1" 00050 00051 AnalogIn ldr(PA_0); 00052 00053 00054 int main() 00055 { 00056 printf("Basic HTTP server example\n"); 00057 00058 //Configure an ethernet connection 00059 EthernetInterface eth; 00060 eth.set_network(IP, NETMASK, GATEWAY); 00061 eth.connect(); 00062 printf("The target IP address is '%s'\n", eth.get_ip_address()); 00063 00064 //Now setup a web server 00065 TCPServer srv; //TCP/IP Server 00066 TCPSocket clt_sock; //Socket for communication 00067 SocketAddress clt_addr; //Address of incoming connection 00068 00069 /* Open the server on ethernet stack */ 00070 srv.open(ð); 00071 00072 /* Bind the HTTP port (TCP 80) to the server */ 00073 srv.bind(eth.get_ip_address(), 80); 00074 00075 /* Can handle 5 simultaneous connections */ 00076 srv.listen(5); 00077 00078 while (true) { 00079 using namespace std; 00080 //Block and wait on an incoming connection 00081 srv.accept(&clt_sock, &clt_addr); 00082 printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port()); 00083 00084 //Uses a C++ string to make it easier to concatinate 00085 //"response" is the string that makes up the whole web page 00086 string response; 00087 //This is a C string 00088 //make space to save variables as strings 00089 char time_str[64]; 00090 char date_str[64]; 00091 char ldr_str[64]; 00092 char temp_str[64]; 00093 char pres_str[64]; 00094 00095 //Read the time/date/sensor values 00096 //use sensor readings instead of 10's 00097 float a = 10; 00098 float e = 10; 00099 float i = ldr; 00100 float o = 10; 00101 float u = 10; 00102 00103 //Convert to a C String 00104 sprintf(time_str, "%5.3f", a ); 00105 sprintf(date_str, "%5.3f", e ); 00106 sprintf(ldr_str, "%5.3f", i ); 00107 sprintf(temp_str, "%5.3f", o ); 00108 sprintf(pres_str, "%5.3f", u ); 00109 00110 //Build the C++ string response 00111 response = HTTP_MESSAGE_BODY1; 00112 response += time_str; 00113 response += HTTP_MESSAGE_BODY2; 00114 response += date_str; 00115 response += HTTP_MESSAGE_BODY3; 00116 response += ldr_str; 00117 response += HTTP_MESSAGE_BODY4; 00118 response += temp_str; 00119 response += HTTP_MESSAGE_BODY5; 00120 response += pres_str; 00121 response += HTTP_MESSAGE_BODY6; 00122 00123 //Send static HTML response (as a C string) 00124 clt_sock.send(response.c_str(), response.size()+6); 00125 } 00126 }
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