TVZ Mechatronics Team / Mbed 2 deprecated SensorsThingSpeak

Uploading sensor data (voltage divider, MAX4172, INA219) over Ethernet to Thing Speak service. Uses old mbed revision that is compatible with NetServices library. I2C communication is made with I2CR library.

Dependencies:   C12832 I2CR INA219 NetServices mbed

Fork of NetServices_HelloWorld by Segundo Equipo

ThingSpeak.cpp@7:1da0a084cd69, 2015-11-29 (annotated)

Committer:
tsoic
Date:
Sun Nov 29 13:41:05 2015 +0000
Revision:
7:1da0a084cd69
Parent:
6:ebbde59c5a1d 

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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#include "mbed.h"





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#include "EthernetNetIf.h"





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#include "HTTPClient.h"





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#include "ThingSpeak.h"





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Serial pc(USBTX, USBRX);





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ThingSpeak::ThingSpeak(char* Key) : thingSpeakKey(Key) {      





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    thingSpeakUrl = "https://api.thingspeak.com/update";





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    urlBuffer[0] = 0;





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    fieldBuffer[0] = 0;





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}





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void ThingSpeak::connect() {





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    pc.printf("Setting up Ethernet...\r\n");





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    EthernetErr ethErr = eth.setup();





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    if(ethErr){





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        pc.printf("Error %d in ethernet setup.\r\n", ethErr);  





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        connect();





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        }





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    pc.printf("Ethernet setup OK\r\n");





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}





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/*





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void ThingSpeak::getIP() {





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}





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*/





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void ThingSpeak::setField(float field, int i) {





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    char fieldi;





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    char fieldShortBuff[8];





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    sprintf(fieldShortBuff, "%f", field);





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    sprintf(&fieldi, "%i", i);





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    strncat(fieldBuffer, "&field", 6 );





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    strncat(fieldBuffer, &fieldi , 1);





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    strncat(fieldBuffer, "=", 1);





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    strncat(fieldBuffer, fieldShortBuff , 4);    





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}





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void ThingSpeak::putUp() {





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    sprintf(urlBuffer, "%s?key=%s%s", thingSpeakUrl, thingSpeakKey, fieldBuffer);





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    pc.printf("URL Buffer request: %s ", urlBuffer); 





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    res = http.get(urlBuffer, &resp);





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    if (res == HTTP_OK)





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        pc.printf(" Result :\"%s\"\r\n", resp.gets());





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    else





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        pc.printf(" Error %d\r\n", res); 





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    fieldBuffer[0] = 0;         





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}