#include<ESP8266WiFi.h> //include ESP8266 library
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>

Adafruit_BME280 bme; // I2C

const char* ssid = "SSID";  // internet wifi name
const char* pass = "PASSWORD";  // wifi password
const char* server = "api.thingspeak.com";  // server name
String apikey = "WVGCEG6BBM1XTPHD";  // Api key from website
WiFiClient client;   // create a client Class

void setup() {

  Serial.begin(115200);  // Initialize the Serial monitor at 9600 bps
  unsigned status;
  status = bme.begin(0x76, &Wire);
  if (!status) {
    Serial.println("Could not find a valid BME280 sensor, check wiring, address, sensor ID!");
    while (1) delay(10);
  }
  Serial.println("Connecting to  ");
  Serial.print(ssid);
  WiFi.begin(ssid, pass);   // start wifi with ssid and passoword
  if (WiFi.status() != WL_CONNECTED) // waiting untill the net connected
  {
    Serial.print(".");
    delay(100);
  }
  Serial.println();
  Serial.print("WiFi is coonected");
  Serial.println(WiFi.localIP());

}

void loop() {
  float temp = bme.readTemperature();  // read temperature and store in float data type "temp variable"
  float humid = bme.readHumidity();  // read humidity and store in float data type "humid" variable
  float Press = bme.readPressure() / 100.0F;
  Serial.print("Humidity: ");   // print
  Serial.print(humid);
  Serial.print(" %,  Temperature: ");
  Serial.print(temp);
  Serial.print("*C,  Biometric Pressure: ");
  Serial.print(Press);
  Serial.println(" hPa");

  if (client.connect(server, 80))
  {
    String postreq = apikey;
    postreq += "&field1=";
    postreq += String(temp);
    postreq += "&field2=";
    postreq += String(humid);
    postreq += "&field3=";
    postreq += String(Press);
    postreq += "\r\n\r\n";

    client.print("POST /update HTTP/1.1\n");
    client.print("HOST: api.thingspeak.com\n");
    client.print("Connection: close\n");
    client.print("X-THINGSPEAKAPIKEY: " + apikey + "\n");
    client.print("Content-Type: application/x-www-form-urlencoded\n");
    client.print("Content-Length: ");
    client.print(postreq.length());
    client.print("\n\n");
    client.print(postreq);
  }
  client.stop();
  delay(1000);

}