#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define DHTPIN 5
#define DHTTYPE    DHT22 

DHT_Unified dht(DHTPIN, DHTTYPE);
uint32_t delayMS;
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);

float cm;
float inches;

long readUltrasonicDistance(int triggerPin, int echoPin)
{
	pinMode(triggerPin, OUTPUT); 
	digitalWrite(triggerPin, LOW);
	delayMicroseconds(2);
	digitalWrite(triggerPin, HIGH);
	delayMicroseconds(10);
	digitalWrite(triggerPin, LOW);
	pinMode(echoPin, INPUT);
	return pulseIn(echoPin, HIGH);
}
uint8_t pacman[8] = {
  0b00000,
  0b00000,
  0b01110,
  0b11011,
  0b11111,
  0b01110,
  0b00000,
  0b00000
};

uint8_t pacmanOpen[] = {
  0b00000,
  0b00000,
  0b01110,
  0b11011,
  0b11100,
  0b01110,
  0b00000,
  0b00000
};

uint8_t dot[] = {
  0b00000,
  0b00000,
  0b00000,
  0b00110,
  0b00110,
  0b00000,
  0b00000,
  0b00000
};

void setup()
{
  Serial.begin(9600);
	dht.begin();
	lcd.begin(20, 4);
  lcd.init();	
  lcd.backlight();
  lcd.print("--> Distance <--");
	delay(3000);
	lcd.clear();
}

void loop()
{
  sensors_event_t event;
  dht.temperature().getEvent(&event);
	cm = 0.0344/2 * readUltrasonicDistance(12, 11);
	inches = (cm / 2.54);
	if (isnan(event.temperature)) {
    lcd.setCursor(0,2);
    lcd.print(F("Error reading temperature!"));
  }
  else {
    lcd.setCursor(0,2);
    lcd.print(F("Temp: "));
    lcd.print(event.temperature);
    lcd.print(F(" C"));
  }
  dht.humidity().getEvent(&event);
  if (isnan(event.relative_humidity)) {
    lcd.setCursor(0,3);
    lcd.print(F("Error reading humidity!"));
  }
  else {
    lcd.setCursor(0,3);
    
    lcd.print(F("Humi: "));
    lcd.print(event.relative_humidity);
    lcd.print(F(" %"));
  }
	lcd.setCursor(0,0);
	lcd.print("Inches:");
	lcd.setCursor(4,0);
	lcd.setCursor(8,0);
	lcd.print(inches, 1);
	lcd.setCursor(0,1);
	lcd.print("cm:");
	lcd.setCursor(8,1);
	lcd.print(cm, 1);
	lcd.setCursor(14,1);
	delay(2000);
	lcd.clear();
	
  
}