#lcd #embedded-hal-driver #no-std

no-std st7567s

Driver for the ST7567S LCD controller

3 unstable releases

0.2.1 Apr 4, 2023
0.2.0 Apr 4, 2023
0.1.0 Mar 30, 2023

#1417 in Embedded development

36 downloads per month

MIT/Apache

24KB
398 lines

ST7567S Display Controller Driver

Crates.io Docs.rs

This crate provides a driver for the ST7567S display controller that can be used with Rust embedded projects.

Features

  • Supports I2C and SPI communication protocols via the display_interface crate.
  • Provides two display modes:
    • Direct Write Mode (by default): This mode allows you to write directly to the display memory by calling the draw method.
    • Buffered Mode: This mode allows you to modify an internal buffer by using methods like set_pixel, clear, or by using the embedded-graphics crate. Once you have made your changes, you can call the flush method to write the buffer to the display.

Notes

  • This driver is designed to work with a more common 128x64 resolution, instead of the original 132x65 resolution of the ST7567S controller.
  • SPI communication is not tested yet.

Examples

Direct write mode

use st7567s::{
    display::{DirectWriteMode, ST7567S},
    interface::{I2CDisplayInterface, I2CInterface},
};
struct I2CStub;
impl embedded_hal::blocking::i2c::Write for I2CStub {
    type Error = ();
    fn write(&mut self, _addr: u8, _buf: &[u8]) -> Result<(), ()> {
        Ok(())
    }
}

let i2c = I2CStub;
let interface = I2CDisplayInterface::new(i2c);
let mut display = ST7567S::new(interface);
display.init().unwrap();

// Set all pixels to enabled state
display
    .draw([0xff; 128 * 64 / 8].as_slice())
    .unwrap();

Buffered mode + embedded_graphics

use st7567s::{
    display::{BufferedMode, ST7567S},
    interface::{I2CDisplayInterface, I2CInterface},
};
use embedded_graphics::{
    mono_font::{ascii::FONT_6X10, MonoTextStyleBuilder},
    pixelcolor::BinaryColor,
    prelude::*,
    text::{Baseline, Text},
};
struct I2CStub;
impl embedded_hal::blocking::i2c::Write for I2CStub {
    type Error = ();
    fn write(&mut self, _addr: u8, _buf: &[u8]) -> Result<(), ()> {
        Ok(())
    }
}

let i2c = I2CStub;
let interface = I2CDisplayInterface::new(i2c);
let mut display = ST7567S::new(interface)
    .into_buffered_graphics_mode();
display.init().unwrap();

let text_style = MonoTextStyleBuilder::new()
    .font(&FONT_6X10)
    .text_color(BinaryColor::On)
    .build();

Text::with_baseline("Hello world!", Point::zero(), text_style, Baseline::Top)
    .draw(&mut display)
    .unwrap();

Text::with_baseline("Hello Rust!", Point::new(0, 16), text_style, Baseline::Top)
    .draw(&mut display)
    .unwrap();

display.flush().unwrap();

Thanks ssd1306 driver for served as an example.

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Dependencies

~180KB