Arduino IDE for ESP8266 Tutorial (iii) HTTP client

The entire tutorial makes an HTTP client for uploading Yeelink data points.

1 Get Account http://www.cnblogs.com/imfanqi/p/4419915.html

2 Code Tutorial http://www.windworkshop.cn/?p=1217

#include <ESP8266WiFi.h> #include <ESP8266HTTPClient.h> #define UKEY ""//Yeelink provided u-apikeystring SSID = "" ; Need to connect the WiFi hotspot name string password = ""; Need to connect the WiFi hotspot password/* Upload data to the server. * Device is the unit number, sensor number, data is the value of the upload point * here the default is uploaded to the latest data points, the need to upload to a specific point in the post content to be added separately timestamp */void uploadyeelinkdata (String  Device, string sensor, string data) {HTTPClient http;  Const String apiaddress = "/v1.1/device/" + device + "/sensor/" + sensor + "/datapoints";  Http.begin ("Api.yeelink.net", apiaddress);  Http.addheader ("U-apikey", Ukey, True); int httpcode = http.  POST ("{\" value\ ":" + Data + "}");  Serial.print ("code:");  Serial.println (Httpcode);      if (Httpcode = = 200) {//Access succeeded, get return parameter String payload = http.getstring ();  SERIAL.PRINTLN (payload);     } else {//access is unsuccessful, print reason String payload = http.getstring ();     Serial.print ("Context:");  SERIAL.PRINTLN (payload);  }}/* data from the server * device is the unit number, sensor number */void Readyeelinkdata (string device, String sensor) {HTTPClient http; The API used hereIs v1.0, v1.1 API needs to provide U-apikey const String apiaddress = "/v1.0/device/" + device + "/sensor/" + sensor + "/datapoints";  Http.begin ("Api.yeelink.net", apiaddress); int httpcode = http. GET ();  Use get form to get Data Serial.print ("code:");  Serial.println (Httpcode);      if (Httpcode = = 200) {//Access succeeded, get return parameter String payload = http.getstring ();  SERIAL.PRINTLN (payload);     } else {//access is unsuccessful, print reason String payload = http.getstring ();     Serial.print ("Context:");  SERIAL.PRINTLN (payload);  }}void Setup () {serial.begin (115200);  int connectcount = 0;  Wifi.begin (Ssid.c_str (), Password.c_str ());    while (Wifi.status ()! = wl_connected) {delay (1000);    Serial.print (".");      if (Connectcount >) {serial.println ("Connect fail!");    Break  } Connectcount + = 1;    } if (wifi.status () = = wl_connected) {serial.println ("");    Serial.print ("Connected to");    SERIAL.PRINTLN (SSID);    Serial.print ("IP address:"); Serial.println (Wifi.locaLIP ());  Connectcount = 0; }//readyeelinkdata ("8938", "28887"); Read Data point test Uploadyeelinkdata ("8938", "28887", "1"); Write data point test} void Loop () {}

　　

Arduino IDE for ESP8266 Tutorial (iii) HTTP client