lcd.begin(16, 2);

ID:242208 · 發(fā)表于 2017-10-23 20:20

//DFRobot.com
//Compatible with the Arduino IDE 1.0
//Library version:1.1

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x3F for a 16 chars and 2 line display

void setup(){

  lcd.init();                   // initialize the lcd
  lcd.backlight();
  lcd.begin(16, 2);
  lcd.home();
lcd.setCursor(2, 0);
  lcd.print("Hello world...");
  lcd.setCursor(2, 1);
  lcd.print("dfrobot.com");

}

int backlightState = LOW;
long previousMillis = 0;
long interval = 1000;

void loop()
{

  unsigned long currentMillis = millis();

  if(currentMillis - previousMillis > interval)
  {
previousMillis = currentMillis;

if (backlightState == LOW)
   backlightState = HIGH;
else
   backlightState = LOW;

if(backlightState == HIGH)  lcd.backlight();
else lcd.noBacklight();
  }
}

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lcd.begin(16, 2);