reorganzie main

include/ota.h

 #ifndef __OTA_H
 #define __OTA_H
 
+#include <ESP8266WiFi.h>
+#include <WiFiUdp.h>
+#include <ArduinoOTA.h>
+
 void ota_setup() {
   ArduinoOTA.setPort(8266);
   ArduinoOTA.setHostname("ESP_Treppenlicht");

src/main.cpp

   #include "user_interface.h" 
 }
 // OTA & WEB
-#include <ESP8266WiFi.h>
-#include <WiFiUdp.h>
-#include <ArduinoOTA.h>
 #include "ota.h"
-
 #include "wifi_credentials.h"
 #include "httpserver.h"
 
 #define NODEMCU_LED 16
 
 // PWM
-
 #include "pwm.h"
 os_timer_t timer1;
 uint8_t timer_flag = 0;
-
 Treppe stairs(13);
 
-
 // WIFI
 const char* ssid = STASSID;
 const char* password = STAPSK;
   pinMode(ESP12_LED, OUTPUT);
 
   Wire.begin();                       // Wire must be started first
-  
+  Wire.setClock(1000000);              // Supported baud rates are 100kHz, 400kHz, and 1000kHz
+
   WiFi.mode(WIFI_STA);
   WiFi.begin(ssid, password);