Post.ino

/*
* Sketch for esp8266
* see https://github.com/esp8266/Arduino
* used on a wemos D1 
* When button 13 is pressed a post request is made.
* (Button 13 has variable 14)
*/

#include <Arduino.h>

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

#include <ESP8266HTTPClient.h>

#define USE_SERIAL Serial

ESP8266WiFiMulti WiFiMulti;

int pushButton = 14;

void setup() {

    USE_SERIAL.begin(9600);
   // 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);
    }

    WiFiMulti.addAP("XXXXX", "XXXX");

  // Setup the Pushbutton
  // make the pushbutton's pin an input:
  pinMode(pushButton, OUTPUT); // Output first seems to be nessecary on wemos d1.
  pinMode(pushButton, INPUT);

}

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

        HTTPClient http;

        USE_SERIAL.print("[HTTP] begin...\n");
        // configure traged server and url



         //http.begin("https://api.lifx.com/v1/lights/all/effects/pulse");
         http.begin("http://192.168.178.26:5000/");
         //http.addHeader("Authorization: Bearer", "SOME-STRING");
         int httpCode = http.POST("");


        USE_SERIAL.print("[HTTP] POST...\n");
        // start connection and send HTTP header

        // 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] POST... failed, error: %s\n", http.errorToString(httpCode).c_str());
        }

        http.end();
        delay(10000);
    }
}

void loop() {
  // read the input pin:
  int buttonState = digitalRead(pushButton);
  // print out the state of the button:
  Serial.println(buttonState);
  delay(1);        // delay in between reads for stability
  if(buttonState == 1) {
    post();
  }
}