How to change <LiquidCrystal_I2C.h> TO #include <LiquidCrystal.h>

Other Hardware Displays
1

Hi :o

i want using this code to my project
so i need help please
i using lcd 2*16 and Arduino Mega 2560, three button,

thnx

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

LiquidCrystal_I2C lcd(0x27, 16, 2);

int upButton = 10;
int downButton = 11;
int selectButton = 12;
int menu = 1;

void setup() {
  lcd.begin();
  lcd.backlight();
  pinMode(upButton, INPUT_PULLUP);
  pinMode(downButton, INPUT_PULLUP);
  pinMode(selectButton, INPUT_PULLUP);
  updateMenu();
}

void loop() {
  if (!digitalRead(downButton)){
    menu++;
    updateMenu();
    delay(100);
    while (!digitalRead(downButton));
  }
  if (!digitalRead(upButton)){
    menu--;
    updateMenu();
    delay(100);
    while(!digitalRead(upButton));
  }
  if (!digitalRead(selectButton)){
    executeAction();
    updateMenu();
    delay(100);
    while (!digitalRead(selectButton));
  }
}

void updateMenu() {
  switch (menu) {
    case 0:
      menu = 1;
      break;
    case 1:
      lcd.clear();
      lcd.print(">MenuItem1");
      lcd.setCursor(0, 1);
      lcd.print(" MenuItem2");
      break;
    case 2:
      lcd.clear();
      lcd.print(" MenuItem1");
      lcd.setCursor(0, 1);
      lcd.print(">MenuItem2");
      break;
    case 3:
      lcd.clear();
      lcd.print(">MenuItem3");
      lcd.setCursor(0, 1);
      lcd.print(" MenuItem4");
      break;
    case 4:
      lcd.clear();
      lcd.print(" MenuItem3");
      lcd.setCursor(0, 1);
      lcd.print(">MenuItem4");
      break;
    case 5:
      menu = 4;
      break;
  }
}

void executeAction() {
  switch (menu) {
    case 1:
      action1();
      break;
    case 2:
      action2();
      break;
    case 3:
      action3();
      break;
    case 4:
      action4();
      break;
  }
}

void action1() {
  lcd.clear();
  lcd.print(">Executing #1");
  delay(1500);
}
void action2() {
  lcd.clear();
  lcd.print(">Executing #2");
  delay(1500);
}
void action3() {
  lcd.clear();
  lcd.print(">Executing #3");
  delay(1500);
}
void action4() {
  lcd.clear();
  lcd.print(">Executing #4");
  delay(1500);
}
2

i want using this code to my project so i need help please

We might be able to help with the problem, but we first need to know what the problem is ("It does not work" is not a sufficient description of the problem).

Karma for using code tags on first post. Not many new posters do.

3

the problem is in my country we don't have these is bord
(( IIC/I2C/TWI Serial Interface Board Module Port For Arduino 1602 LCD Display B00146 JUST ))
How to change <LiquidCrystal_I2C.h> CODE TO #include <LiquidCrystal.h>
so i hope you help

iic-i2c-serial-interface-board-module.jpg
iic-i2c-serial-interface-board-module.jpg800×800 48.7 KB

4

So you are not using an I2C backpack? Then how is the LCD wired? A schematic would help a lot, here.

If you have the LCD wired in 4 or 8 bit mode, there are examples in the LiquidCrystal library the show how to use the library for those display wiring schemes. Here is a LiquidCrystal library reference for the library that comes with the IDE,