Getting started

A quick guide to get you started with LcdMenu.

LcdMenu is a simple but powerful library for creating menus systems on embedded devices. It is designed to be easy to use and to work with a wide range of display interfaces and provide various helpers for handling user input like rotary encoders and buttons.

Installation

Follow this guide to install the library with Arduino Library Manager or install it with PlatformIO using the steps below:

  1. Open the PlatformIO IDE or VSCode with PlatformIO extension installed.

  2. Create a new project or open an existing one.

  3. Add the LcdMenu library to your project by adding the following line to your platformio.ini file:

    lib_deps =
    forntoh/LcdMenu@^5.4.0

  4. Save the changes to the platformio.ini file.

  5. Build and upload your project to your device.

Usage

To create a menu system with LcdMenu, you need to define a menu structure and a display interface and an input method to interact with the menu. For this example, we will use the LiquidCrystal_I2C display interface and KeyboardAdapter for user input to read from the serial monitor. You can replace these with other display interfaces and input methods as needed or create your own.

#include <LcdMenu.h>
#include <MenuScreen.h>
#include <display/LiquidCrystal_I2CAdapter.h>
#include <renderer/CharacterDisplayRenderer.h>
#include <input/KeyboardAdapter.h>

MENU_SCREEN(mainScreen, mainItems,
    ITEM_BASIC("Item 1"),
    ITEM_BASIC("Item 2"),
    ITEM_BASIC("Item 3"),
    ITEM_BASIC("Item 4"));

LiquidCrystal_I2C lcd(0x27, 16, 2);
LiquidCrystal_I2CAdapter lcdAdapter(&lcd);
CharacterDisplayRenderer renderer(&lcdAdapter, 16, 2);
LcdMenu menu(renderer);
KeyboardAdapter keyboard(&menu, &Serial);

void setup() {
    Serial.begin(9600);
    renderer.begin();
    menu.setScreen(mainScreen);
}

void loop() {
    keyboard.observe();
}

This example creates a simple menu with four items and displays it on a 16x2 LCD screen. The menu is controlled using the serial monitor, where you can navigate through the items using the arrow keys.

For detailed information on how to use LcdMenu, check out the API Reference.

In the next chapters, we will go through the different components of the library and how to use them to create more complex menu systems.