//http://www.circuitbasics.com/how-to-set-up-the-dht11-humidity-sensor-on-an-arduino/
#include <SoftwareSerial.h>

#include <dht11.h>

dht11 DHT11;

#define DHT11PIN 2

SoftwareSerial mySerial(0, 1); // RX, TX

const int trigPin = 9;
const int echoPin = 10;

int mean(int* tab){
    int res=0;
    for(int i=0;i<16;++i){
      res+=tab[i];
    }
    return res/16;
}

int getDistance(){

  int distance;

  int tab1[18];
  int tab2[16];
  int duration;
  for(int i=0;i<18;++i){

      digitalWrite(trigPin, LOW);
      delayMicroseconds(2);
      // Sets the trigPin on HIGH state for 10 micro seconds
      digitalWrite(trigPin, HIGH);
      delayMicroseconds(10);
      digitalWrite(trigPin, LOW);
      // Reads the echoPin, returns the sound wave travel time in microseconds
      duration = pulseIn(echoPin, HIGH);
      // Calculating the distance
      distance= duration*0.034/2;
      tab1[i] = distance;

  }


  int minpoz = 0;
  for(int i=0;i<18;++i)
   if(tab1[minpoz]>tab1[i])minpoz=i;
  int maxpoz = 0;
  for(int i=0;i<18;++i)
    if(tab1[maxpoz]<tab1[i])maxpoz=i;
  if(maxpoz==minpoz)maxpoz++;
  int j=0;
  for(int i=0;i<18;++i)
    if(i!=maxpoz && i!=minpoz)tab2[j++]=tab1[i];

  int mean_value = mean(tab2);

  return mean_value;


}

int getTemperature(){
  int chk = DHT11.read(DHT11PIN);         //sprawdzenie stanu sensora, a następnie wyświetlenie komunikatu na monitorze szeregowym


  switch (chk)
  {
    case DHTLIB_OK:

    return (float)DHT11.temperature;

    break;
    case DHTLIB_ERROR_CHECKSUM:

    return -100;
    break;
    case DHTLIB_ERROR_TIMEOUT:

    return -100;
    break;
    default:

    return -100;
    break;
  }
}

int getHumidity(){
  int chk = DHT11.read(DHT11PIN);         //sprawdzenie stanu sensora, a następnie wyświetlenie komunikatu na monitorze szeregowym


  switch (chk)
  {
    case DHTLIB_OK:

    return (float)DHT11.humidity;

    break;
    case DHTLIB_ERROR_CHECKSUM:

    return -100;
    break;
    case DHTLIB_ERROR_TIMEOUT:

    return -100;
    break;
    default:

    return -100;
    break;
  }
}


char inChar;



void setup() {
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
  pinMode(echoPin, INPUT); // Sets the echoPin as an Input
  Serial.begin(9600); // Starts the serial communication
  mySerial.begin(9600);
}

void printToSerial(char* name, int value){
  Serial.print(name);
  Serial.print(int(value));
  Serial.print("\n");
}

void loop() {

  //int mean_value = getDistance();
  //mySerial.write("Distance ");
  //mySerial.write(mean_value);
  //mySerial.write("\n");
  //Serial.println(mean_value);
  //Serial.write("Distance ");
  //Serial.write(mean_value);
  //Serial.write("\n");

  //printToSerial("Distance",mean_value);
  int temperature = getTemperature();
    delay(1000);
  int humidity = getHumidity();
  printToSerial("Temperature ", temperature);
  printToSerial("humidity ", humidity);
  delay(1000);

}