hd44780-hal

Implementation of the embedded-hal traits for the HD44780.

Documentation

https://docs.rs/hd44780-hal

Examples

Currently there are basic examples for Raspberry Pi as well as the Adafruit Metro Express M0 as those are the devices I currently have on hand.

Any platform that implements the embedded-hal traits is supported by this library! :thumbsup:

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::new 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.

```rust // Code grabbed from the metro_m0 example 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.setdisplaymode(true, true, true); lcd.write_str("Hello, world!"); ```

Todo

• 4 bit mode
• Busy flag support (Waiting for support from embedded-hal to read and write from a pin)
• Non-blocking API
• A more user-friendly API with additional features
• Custom characters

Additional issues as well as pull-requests are welcome!

License

This project is licensed under MIT license (LICENSE or https://opensource.org/licenses/MIT)