Data to Thingspeak Over Ethernet Port
Dependencies: mbed HTTPClient mbed-rtos NTPClient EthernetInterface
Diff: main.cpp
- Revision:
- 6:04e36c8a7c89
- Parent:
- 5:b8a76bfc45c9
diff -r b8a76bfc45c9 -r 04e36c8a7c89 main.cpp --- a/main.cpp Sat Apr 13 19:46:56 2019 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,55 +0,0 @@ -#include "mbed.h" -#include "EthernetInterface.h" -#include "HTTPClient.h" -#include <stdio.h> - - -char buffer[256]; -char resp[1024]; -char val[4][16]; -float f_out = 23.0; -int ret = 0; - -//Ethernet Interface -EthernetInterface eth; - -//HTTP Client for interfacing to web services -HTTPClient http; - -//serial over USB for debug and Info -Serial pc(USBTX, USBRX); - -//http client init -HTTPMap map; -HTTPText inText(resp, 1024); - - -int main(){ - - //ethernet init - eth.init(); //Use DHCP - ret= eth.connect(); - - if (!ret){ - pc.printf("\r\nConnected, IP: %s, MASK: %s, GW: %s", - eth.getIPAddress(), eth.getNetworkMask(), eth.getGateway()); - } else { - pc.printf("\r\nError eth.connect() - ret = %d", ret); - } - - while(1){ - pc.printf("\r\nWriting to thingspeak"); - map.put("api_key","EEMB3URN9LDSPRIM"); /* The thingspeak API KEY*/ - sprintf(val[0],"%4.1f",f_out); - map.put("field1", val[0]); - map.put("field2", val[0]); - pc.printf("\r\nPosting Data..."); - ret = http.post("https://api.thingspeak.com/update", map, &inText); //writing data to Thingspeak - if (!ret){ - pc.printf("\r\nPOST successfully - read %d characters", strlen(resp)); - pc.printf("\r\nResult: %s\n", resp); - }else{ - pc.printf("\r\nError Connecting to ethernet port - ret = %d - HTTP return code = %d", ret, http.getHTTPResponseCode()); - } - } -} \ No newline at end of file