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
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?
User | Revision | Line number | New contents of line |
---|---|---|---|
tsoic | 6:ebbde59c5a1d | 1 | #include "mbed.h" |
tsoic | 6:ebbde59c5a1d | 2 | #include "EthernetNetIf.h" |
tsoic | 6:ebbde59c5a1d | 3 | #include "HTTPClient.h" |
tsoic | 6:ebbde59c5a1d | 4 | #include "ThingSpeak.h" |
tsoic | 6:ebbde59c5a1d | 5 | |
tsoic | 6:ebbde59c5a1d | 6 | Serial pc(USBTX, USBRX); |
tsoic | 6:ebbde59c5a1d | 7 | |
tsoic | 7:1da0a084cd69 | 8 | ThingSpeak::ThingSpeak(char* Key) : thingSpeakKey(Key) { |
tsoic | 6:ebbde59c5a1d | 9 | thingSpeakUrl = "https://api.thingspeak.com/update"; |
tsoic | 6:ebbde59c5a1d | 10 | urlBuffer[0] = 0; |
tsoic | 6:ebbde59c5a1d | 11 | fieldBuffer[0] = 0; |
tsoic | 6:ebbde59c5a1d | 12 | } |
tsoic | 6:ebbde59c5a1d | 13 | |
tsoic | 6:ebbde59c5a1d | 14 | void ThingSpeak::connect() { |
tsoic | 6:ebbde59c5a1d | 15 | pc.printf("Setting up Ethernet...\r\n"); |
tsoic | 6:ebbde59c5a1d | 16 | EthernetErr ethErr = eth.setup(); |
tsoic | 6:ebbde59c5a1d | 17 | if(ethErr){ |
tsoic | 6:ebbde59c5a1d | 18 | pc.printf("Error %d in ethernet setup.\r\n", ethErr); |
tsoic | 7:1da0a084cd69 | 19 | connect(); |
tsoic | 6:ebbde59c5a1d | 20 | } |
tsoic | 6:ebbde59c5a1d | 21 | pc.printf("Ethernet setup OK\r\n"); |
tsoic | 6:ebbde59c5a1d | 22 | } |
tsoic | 7:1da0a084cd69 | 23 | /* |
tsoic | 6:ebbde59c5a1d | 24 | void ThingSpeak::getIP() { |
tsoic | 6:ebbde59c5a1d | 25 | |
tsoic | 6:ebbde59c5a1d | 26 | } |
tsoic | 7:1da0a084cd69 | 27 | */ |
tsoic | 6:ebbde59c5a1d | 28 | void ThingSpeak::setField(float field, int i) { |
tsoic | 6:ebbde59c5a1d | 29 | char fieldi; |
tsoic | 6:ebbde59c5a1d | 30 | char fieldShortBuff[8]; |
tsoic | 6:ebbde59c5a1d | 31 | sprintf(fieldShortBuff, "%f", field); |
tsoic | 6:ebbde59c5a1d | 32 | sprintf(&fieldi, "%i", i); |
tsoic | 6:ebbde59c5a1d | 33 | strncat(fieldBuffer, "&field", 6 ); |
tsoic | 6:ebbde59c5a1d | 34 | strncat(fieldBuffer, &fieldi , 1); |
tsoic | 6:ebbde59c5a1d | 35 | strncat(fieldBuffer, "=", 1); |
tsoic | 6:ebbde59c5a1d | 36 | strncat(fieldBuffer, fieldShortBuff , 4); |
tsoic | 6:ebbde59c5a1d | 37 | } |
tsoic | 6:ebbde59c5a1d | 38 | |
tsoic | 6:ebbde59c5a1d | 39 | void ThingSpeak::putUp() { |
tsoic | 6:ebbde59c5a1d | 40 | sprintf(urlBuffer, "%s?key=%s%s", thingSpeakUrl, thingSpeakKey, fieldBuffer); |
tsoic | 6:ebbde59c5a1d | 41 | pc.printf("URL Buffer request: %s ", urlBuffer); |
tsoic | 6:ebbde59c5a1d | 42 | res = http.get(urlBuffer, &resp); |
tsoic | 6:ebbde59c5a1d | 43 | if (res == HTTP_OK) |
tsoic | 6:ebbde59c5a1d | 44 | pc.printf(" Result :\"%s\"\r\n", resp.gets()); |
tsoic | 6:ebbde59c5a1d | 45 | else |
tsoic | 6:ebbde59c5a1d | 46 | pc.printf(" Error %d\r\n", res); |
tsoic | 6:ebbde59c5a1d | 47 | fieldBuffer[0] = 0; |
tsoic | 6:ebbde59c5a1d | 48 | } |