HTTP Client with ESP8266

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#include <Arduino.h>

#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>

#include <ESP8266HTTPClient.h>

#define USE_SERIAL Serial

ESP8266WiFiMulti WiFiMulti;

void setup() {

USE_SERIAL.begin(115200);
// USE_SERIAL.setDebugOutput(true);

USE_SERIAL.println();
USE_SERIAL.println();
USE_SERIAL.println();

for (uint8_t t = 4; t > 0; t--) {
USE_SERIAL.printf("[SETUP] WAIT %d...\n", t);
USE_SERIAL.flush();
delay(1000);
}

WiFi.mode(WIFI_STA);
WiFiMulti.addAP("SSID", "PASSWORD");

}

void loop() {
// wait for WiFi connection
if ((WiFiMulti.run() == WL_CONNECTED)) {

HTTPClient http;

USE_SERIAL.print("[HTTP] begin...\n");
String url; //http://scare.iocare.in/input/post?node=node1&fulljson={"humidity":100,"temperature":200}&apikey=9c5b81163fe6882a8c23fe1a1a8c4b1f
float h;
float t;

//{"humidity":100,"temperature":200}
String data = "&fulljson={\"humidity\":";
data += h;
data +=",\"temperature\":";
data +=t;
data +="}";

url="http://scare.iocare.in/input/post?node=node1&apikey=9c5b81163fe6882a8c23fe1a1a8c4b1f"+data;

// configure traged server and url
//http.begin("https://192.168.1.12/test.html", "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38"); //HTTPS
http.begin(url); //HTTP
USE_SERIAL.print("[HTTP] GET...\n");
// start connection and send HTTP header
int httpCode = http.GET();

// httpCode will be negative on error
if (httpCode > 0) {
// HTTP header has been send and Server response header has been handled
USE_SERIAL.printf("[HTTP] GET... code: %d\n", httpCode);

// file found at server
if (httpCode == HTTP_CODE_OK) {
String payload = http.getString();
USE_SERIAL.println(payload);
}
} else {
USE_SERIAL.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
}

http.end();
}

delay(10000);
}

 

Posted in Internet on Sep 05, 2018


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