LCD LM1602 I2C driver

Driver to write characters to LCD displays with a LM1602 connected via i2c like this one with 16x2 characters. It requires a I2C instance implementing [embedded_hal::blocking::i2c::Write] and a instance to delay execution with [embedded_hal::blocking::delay::DelayMs]. Other LCD sizes are supported, up to displays with 20x4 characters. Everything that uses a HD44780U or comparable controller and is connected via i2c should work. Like this

Usage:

const LCD_ADDRESS: u8 = 0x27; // Address depends on hardware, see link below

// Create a I2C instance, needs to implement embedded_hal::blocking::i2c::Write, this
// particular uses the arduino_hal crate for avr microcontrollers like the arduinos.
let dp = arduino_hal::Peripherals::take().unwrap();
let pins = arduino_hal::pins!(dp);
let mut i2c = arduino_hal::I2c::new(
    dp.TWI, //
    pins.a4.into_pull_up_input(), // use respective pins
    pins.a5.into_pull_up_input(),
    50000,
);
let mut delay = arduino_hal::Delay::new();

let mut lcd = lcd_lcm1602_i2c::LCD16x2::new(&mut i2c, &mut delay)
    .address(LCD_ADDRESS)
    .cursor_on(false) // no visible cursor
    .init().unwrap();

This site describes how to find the address of your LCD devices.

There is a similar crate lcd_1602_i2c but that did not work with this display.