ThingSpeak.h

00001 #ifndef THINGSPEAK_H
00002 #define THINGSPEAK_H
00003 #define HOSTNAME "mbed"
00004 #include "mbed.h"
00005 #include "EthernetNetIf.h"
00006 #include "HTTPClient.h"
00007 
00008 /** Class for sending data to ThingSpeak over ethernet,
00009  *  Class is using old mbed library revision and SensorsThingSpeak from
00010  *  https://developer.mbed.org/teams/TVZ-Mechatronics-Team/code/SensorsThingSpeak/
00011  * Example:
00012  * @code
00013  * #include "mbed.h"
00014  * #include "ThingSpeak.h"
00015  *
00016  * ThingSpeak thingSpeak("XXXXXXXXXXXXXXXX");
00017  *
00018  * int main() {
00019  *     int i = 1;
00020  *     flot value = 3.14;
00021  *     thingSpeak.connect();
00022  *     thingSpeak.setField(value,i)
00023  *     thingSpeak.putUp();
00024  * }
00025  * @endcode
00026 */
00027 class ThingSpeak
00028 {
00029 
00030 public:
00031     /** Write api key provided from ThingSpek channel.
00032      * @param: write api key provided from ThingSpeak channel.
00033     */
00034     ThingSpeak(char*);
00035     /**
00036      * Establishing ethernet connection until connected.
00037      *
00038     */
00039     void connect();
00040     
00041     /**
00042     *   Funkcion for pulling data from ThingSpeak.
00043     *   @param readKey Channel feed number
00044     *   @param Field number.
00045     */
00046     float pull(long int, int);
00047     
00048     
00049     void putUp();
00050     /**
00051      *Setting values to the field, they should be set in order.
00052      * It's not required to set them all  (example: you can set 1, 2, 3 or 1, 3)
00053      * @param Field value to store on.
00054      * @param i number of a field.
00055     */
00056     void setField(float field, int i);
00057 private:
00058 
00059     char* thingSpeakUrl;
00060     char* thingSpeakRead;
00061     char* thingSpeakKey;
00062     char urlBuffer[1023];
00063     char fieldBuffer[1023];
00064     EthernetNetIf eth;
00065     EthernetErr ethErr;
00066     HTTPClient http;
00067     IpAddr ethIp;
00068     HTTPText resp;
00069     HTTPResult res;
00070 };
00071 
00072 #endif