University of Plymouth - Stages 1, 2 and 3 / Mbed OS Task671-mbedos-FZ429-TCP-dynamic

Simple TCP/IP Server (dynamic web page)

Dependents:   TASKHTML

Diff: main.cpp

Revision:
1:76bd6f78cabc
Parent:
0:65ff7ad381e8
Child:
2:ecf4c78019ab
diff -r 65ff7ad381e8 -r 76bd6f78cabc main.cpp
--- a/main.cpp	Mon Nov 20 17:31:23 2017 +0000
+++ b/main.cpp	Tue Nov 21 14:21:48 2017 +0000
@@ -16,7 +16,7 @@
 "  <body style=\"display:flex;text-align:center\">" "\r\n"       \
 "    <div style=\"margin:auto\">" "\r\n"                         \
 "      <h1>Hello World</h1>" "\r\n"                              \
-"      <p>The POT value is "                                     
+"      <p>The LDR value is "                                     
 
 #define HTTP_MESSAGE_BODY2 ""                                    \
        "</p>" "\r\n"                                             \
@@ -33,7 +33,7 @@
 #define NETMASK   "255.0.0.0"
 #define GATEWAY   "10.0.0.1"
 
-AnalogIn pot(PA_0);
+AnalogIn ldr(PA_0);
 
 
 int main()
@@ -66,17 +66,24 @@
         srv.accept(&clt_sock, &clt_addr);
         printf("accept %s:%d\n", clt_addr.get_ip_address(), clt_addr.get_port());
         
+        //Uses a C++ string to make it easier to concatinate
         string response;
-        char pot_str[64];
-        float u = pot;
-        sprintf(pot_str, "%5.3f", u );
-        printf("POT: %5.3f\n\r", u);
+        //This is a C string
+        char ldr_str[64];
+        
+        //Read the LDR value
+        float u = ldr;
         
+        //Convert to a C String
+        sprintf(ldr_str, "%5.3f", u );
+        printf("LDR: %5.3f\n\r", u);
+        
+        //Build the C++ string response
         response = HTTP_MESSAGE_BODY1;
-        response += pot_str;
+        response += ldr_str;
         response += HTTP_MESSAGE_BODY2;
         
-        //Send static HTML response
+        //Send static HTML response (as a C string)
         clt_sock.send(response.c_str(), response.size()+6);    
     }
 }