DHT22 sensor code error

Projects Programming
1

Hello,

I'm following a tutorial from http://howtomechatronics.com/tutorials/arduino/dht11-dht22-sensors-temperature-and-humidity-tutorial-using-arduino/

And the code he's provided has an error that I can't figure out. Here's the code I have:
#include <DHT.h>
#include <DHT_U.h>

/* DHT11/ DHT22 Sensor Temperature and Humidity Tutorial

  • Program made by Dejan Nedelkovski,
  • www.HowToMechatronics.com
    /
    /
  • You can find the DHT Library from Arduino official website
  • Arduino Playground - DHTLib
    */
    #include <DHT.h>
    #include <Wire.h>
    #include <LCD.h>
    #include <LiquidCrystal_I2C.h>
    #include <LiquidCrystal.h> // includes the LiquidCrystal Library
    #define dataPin 8
    LiquidCrystal lcd(1, 2, 4, 5, 6, 7); // Creates an LCD object. Parameters: (rs, enable, d4, d5, d6, d7)
    #define dht DHT;
    void setup() {
    lcd.begin(16,2); // Initializes the interface to the LCD screen, and specifies the dimensions (width and height) of the display

}
void loop() {
int readData = DHT.read22(dataPin);
float t = DHT.temperature;
float h = DHT.humidity;
lcd.setCursor(0,0); // Sets the location at which subsequent text written to the LCD will be displayed
lcd.print("Temp.: "); // Prints string "Temp." on the LCD
lcd.print(t); // Prints the temperature value from the sensor
lcd.print(" C");
lcd.setCursor(0,1);
lcd.print("Humi.: ");
lcd.print(h);
lcd.print(" %");
delay(2000);
}

and here is the error I have - the line the error is referring to is bold to stand out:

sketch_jul22a:27: error: expected primary-expression before '.' token

I'm very new to arduino so I'm still learning how the code process works, thanks for the help.

2

#define dht DHT;oops

Please remember to use code tags when posting code

3

See how many times you see a semicolon in a preprocessor macro

4

csharpwizard:
Ahh gotcha, habit hah. I'm still getting the error I explained but thanks for correcting that mistake.

so then where are you creating the DHT object?

5

csharpwizard:
Isn't that what the #define dht DHT does? I'm sorry, I literally started learning arduino this week.

your name confused me Mr. csharpwizard

DHT dht;  // creates a DHT object called dht