//https://forum.arduino.cc/t/static-unsigned-long-problems/1250532/1
#include <Servo.h>
#include <SimpleDHT.h>
#include "dht_nonblocking.h"
#define DHT_SENSOR_TYPE DHT_TYPE_22
static const int DHT_SENSOR_PIN = 3;
DHT_nonblocking dht_sensor( DHT_SENSOR_PIN, DHT_SENSOR_TYPE );
Servo myservo;
/*
   Initialize the serial port.
*/
//---------------------------------------------------------------------
void setup( ) {
  Serial.begin( 9600);
  myservo.attach(5);
  myservo.write(90);// move servos to center position -> 90°
}
/*
   Poll for a measurement, keeping the state machine alive.  Returns
   true if a measurement is available.
*/
//---------------------------------------------------------------------
static bool measure_environment( float *temperature, float *humidity ) {
  static unsigned long measurement_timestamp = millis( );
  /* Measure once every four seconds. change the 1000  */
  if ( millis( ) - measurement_timestamp > 1000ul )  {
    if ( dht_sensor.measure( temperature, humidity ) == true )    {
      measurement_timestamp = millis( );
      return ( true );
    }
  }
  return ( false );
}
//---------------------------------------------------------------------
/*
   Main program loop.
*/
void loop( )
{
  float temperature;
  float humidity;
  /* Measure temperature and humidity.  If the functions returns
     true, then a measurement is available. */
  if ( measure_environment( &temperature, &humidity ) == true )
  {
    Serial.print( "T = " );
    Serial.print( temperature, 1 );
    Serial.print( " deg. C, H = " );
    Serial.print( humidity, 1 );
    Serial.println( "%" );
  }
  /*change the 25*/
  if (temperature > 25 )  {
    myservo.write(30);
  }
  else if (humidity > 80)  {
    myservo.write(30);
  }
  else  {
    myservo.write(90);
  }
}