hd44780-hal

Implementation of the embedded-hal traits for the HD44780

Example usage

This library is pretty bare bones at the moment, but it's greatest feature is that all you need to do to use it is supply the HD44780 function a bunch of pins that implement the OutputPin trait for embedded-hal as well as a struct that implements delay with support for DelayUs<u16> + DelayMs<u8> also from embedded-hal.

let mut lcd = HD44780::new(
    
    pins.d4.into_open_drain_output(&mut pins.port), // Register Select pin
    pins.d3.into_open_drain_output(&mut pins.port), // Enable pin

    pins.d5.into_open_drain_output(&mut pins.port),  // d0
    pins.d6.into_open_drain_output(&mut pins.port),  // d1
    pins.d7.into_open_drain_output(&mut pins.port),  // d2
    pins.d8.into_open_drain_output(&mut pins.port),  // d3
    pins.d9.into_open_drain_output(&mut pins.port),  // d4
    pins.d10.into_open_drain_output(&mut pins.port), // d5
    pins.d11.into_open_drain_output(&mut pins.port), // d6
    pins.d12.into_open_drain_output(&mut pins.port), // d7

    delay,
);

lcd.reset();
lcd.clear();
lcd.set_display_mode(true, true, true);
lcd.write_str("Hello, world!");

Issues and pull-requests are welcome!

Todo

• 4 bit mode
• Busy flag support
• Make the API for user-friendly
• Raspberry Pi example using linux-embedded-hal