Diff: main.cpp

Revision:

1:8c684ad7d00e

Parent:

0:9eca947a9efa

--- a/main.cpp	Thu May 19 06:52:59 2016 +0000
+++ b/main.cpp	Sun Oct 30 16:00:06 2016 +0000
@@ -1,67 +1,94 @@
+/*
+Title:      Program to send DATA to  Sparkfun Stream
+Author:     David Elmo Ross, 123-456-789, AED_701AA
+Date:       Oct 5th, 2016
+Desription: This program simulates Celsius and Fahrenheit values. This can
+            be changed to get these values from a Temperature sensor.
+            This program will set up the necessary parameters to communicate
+            through the Ethernet Port on the FRDM-K64 that will then connect
+            to the SPARKFUN Server. The data provided by this program is formatted
+            to fit a STREAM on the Sparkfun Server that was set up before time with
+            Fahrenheit and Celsius.
+            When data is sent to the stream, it will include a PUBLIC and PRIVATE
+            key or it will be rejected. These keys are given to the user through 
+            the site    data.sparkfun.com  
+            The key values you receive must replace the ones in this program.
+            
+*/
+
 #include "mbed.h"
 #include "EthernetInterface.h"
 
-char* Public_Key = "ro9WnDLy63t4xp5n18vm";
-char* Private_Key = "jkKr0obAEnS0MgJRNa92";
-char* ServerIP = "data.sparkfun.com";
+char* Public_Key = "PublicKeyGoesHere";             // Public Key is used to access data that has been sent
+char* Private_Key = "PrivateKeyGoesHere";           // Private Key is sent with Public Key with every data xfer
+char* ServerIP = "data.sparkfun.com";               // Server IP is  data.sparkfun.com
 
-Serial pc(USBTX, USBRX);
-
-EthernetInterface ethernet;
+EthernetInterface ethernet;                         // define ethernet to be of type EthernetInterface
 
 int main()
 {
-    pc.baud(115200);
-    pc.printf("Start\r\n");
-    int a=100;
+    int counter;                                    // used as a counter to send a fixed number of values
+    putchar(0x1b);                                  // clears the PC screen
+    printf("[2J");
+
+    printf("Start\r\n");                            // send START message to PC screen
+    float fahrenheit;                               // set up fahrenhiet as a float
+    float celsius=5.0;                              // set celcius to 5.0
+   
     while(1)
     {          
-        int ret = ethernet.init();     
-        if (!ret) 
-        {
-            pc.printf("Initialized, MAC: %s\r\n", ethernet.getMACAddress());
-            ret = ethernet.connect();
-            if (!ret) 
-            {
-                pc.printf("IP: %s, MASK: %s, GW: %s\r\n",
+        int ret = ethernet.init();                  // ret gets result of ethernet.init()
+                                                    // 0 means that initialization was successful
+        if (!ret)                                   // if initialization WAS successful
+        {                                           // output the MAC address
+            printf("Initialized, MAC: %s\r\n", ethernet.getMACAddress());
+            ret = ethernet.connect();               // ret gets result of ethernet.connect()
+            if (!ret)                               // 0 means that connection was successufl
+            {                                       // if connection print out IP MASK and GATEWAY
+                printf("IP: %s, MASK: %s, GW: %s\r\n",
                 ethernet.getIPAddress(), ethernet.getNetworkMask(), ethernet.getGateway());
             } 
-            else 
+            else                                    // if no connection then Print error and terminate 
             {
-                pc.printf("Error ethernet.connect() - ret = %d\r\n", ret);
+                printf("Error ethernet.connect() - ret = %d\r\n", ret);
                 exit(0);
             }
         } 
-        else 
+        else                                        // if ethernet would NOT initialize, print error and terminate
         {
-            pc.printf("Error ethernet.init() - ret = %d\r\n", ret);
+            printf("Error ethernet.init() - ret = %d\r\n", ret);
             exit(0);
         }  
-        TCPSocketConnection sock;
-        char buffer[300];
+        TCPSocketConnection sock;                   // define sock to be of type TCPSocketConnection
+  
         int ret_t;   
-        char http_cmd[256];
-            while(1)
+        char http_cmd[256];                         // set up 256 byte buffer for http commands sent to Sparkfun
+            for(counter=1;counter<=10;++counter)
             {
-            
-            sock.connect(ServerIP, 80);
-            if(sock.is_connected())
+            sock.connect(ServerIP, 80);             // connect to SPARFUN on PORT 80 and print server IP
+            printf("Server IP: %s", ServerIP);      
+            if(sock.is_connected())                 // if connection is made say Socket Connected
                 printf("Socket Connected\n\r");
             else
-                printf("Socket NoT Connected\n\r");  
-            //sprintf(http_cmd,"GET /input/%s?private_key=%s&a=%2d HTTP/1.0\n\n",Public_Key,Private_Key,a);
-            sprintf(http_cmd,"GET /input/%s?private_key=%s&a=%2d HTTP/1.0\n\n",Public_Key,Private_Key,a);
-            pc.printf("Running - %s\r\n",http_cmd);
+            {                                       // else print Socket NOT connected
+                printf("Socket NoT Connected\n\r");
+                printf("\r\n Program has halted");
+                exit(0);
+             }     
+            // format string http_cmd   
+            fahrenheit= ((9.0/5.0)*celsius + 32); 
+            sprintf(http_cmd,"GET /input/%s?private_key=%s&fahrenheit=%0.1f&celsius=%.1f HTTP/1.0\n\n",Public_Key,Private_Key,fahrenheit, celsius);
+            // send formatted string
             sock.send_all(http_cmd, sizeof(http_cmd)-1);
+            printf("\tcelsius =%.1f\tfahrenheit=%.1f\r\n",celsius,fahrenheit);
         
-            ret_t = sock.receive(buffer, sizeof(buffer)-1);
-            buffer[ret_t] = '\0';
-            pc.printf("Received %d chars from server:\n%s\r\n", ret_t, buffer);
-            sock.close();
-            a=a+1;
+            sock.close();                           // close the socket
+ //           station++;
+            celsius+=1.1;
             wait(5);
             }
-        
+        printf("\r\n\r\nProgram has halted - all data sent.");
+        exit(0);
         }