main.cpp

00001 #include "mbed.h"
00002 #include "EthernetNetIf.h"
00003 #include "HTTPClient.h"
00004 #include <string> 
00005 
00006 
00007 EthernetNetIf eth; 
00008 HTTPClient http;
00009 
00010 // Ethernet LED's
00011 DigitalOut RED(p29);
00012 DigitalOut YEL(p30);
00013 
00014   
00015 int main() {
00016 
00017     printf("Start\n");
00018     RED = !RED; YEL = !YEL;
00019     
00020     printf("\r\nSetting up...\r\n");
00021     RED = !RED; YEL=!YEL;
00022     
00023     EthernetErr ethErr = eth.setup();
00024     RED = !RED; YEL=!YEL;
00025     
00026     if(ethErr)
00027     {
00028     printf("Error %d in setup.\n", ethErr);
00029     return -1;
00030     }
00031     printf("\r\nSetup OK\r\n");
00032     RED = !RED; YEL=!YEL;
00033     
00034     HTTPText txt;
00035     RED = !RED; YEL=!YEL;
00036      
00037     int idx = 0;
00038     
00039     while(idx < 5) {
00040     
00041         printf("\r\n idx = %d \r\n",idx);
00042     
00043         // copy API key from settings
00044         char apiKey[17]= "L6MA5ZGH3WPSDALA";
00045         printf("apiKey = %s \r\n",apiKey); 
00046         
00047         // use feed ID
00048         char fieldID[8]= "field1";
00049         printf("fieldID = %s \r\n",fieldID); 
00050         
00051         // Send data based on the loop idx - this example is 0-4
00052         char data[10];
00053         sprintf(data,"%d",idx*10);
00054         printf("data = %s \r\n",data);
00055         
00056         // uri for post includes feed ID
00057         char uri[256];
00058         sprintf(uri,"%s%s&%s=%s","http://api.thingspeak.com/update?key=",apiKey,fieldID,data); 
00059         printf("uri = %s \r\n",uri); 
00060                                  
00061         // result should =  - "http://api.thingspeak.com/update?key=L6MA5ZGH3WPSDALA&field1=26"
00062         HTTPResult r = http.get(uri, &txt);
00063         RED = !RED; YEL=!YEL;
00064             
00065         if(r==HTTP_OK)
00066             {
00067             printf("Result :\"%s\"\n", txt.gets()); 
00068             }
00069             else
00070             {
00071             printf("Error %d\n", r);
00072             }
00073         RED = !RED; YEL=!YEL;
00074                
00075         wait(60); //wait 60 seconds
00076         idx = idx + 1;
00077     }
00078  
00079 }