st7789driver

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st7789driver is an async Rust driver library for controlling the ST7789 display, designed for embedded no_std environments. It is based on the embedded-hal and embedded-hal-async traits, supporting SPI communication and async delays.

Features

• ST7789 display initialization
• Row/column address setting
• Video memory write commands
• Async SPI communication
• Customizable delay implementation

Usage

Dependencies

Add the following to your Cargo.toml:

[dependencies]
st7789driver = { path = "your_path/st7789driver" }
embedded-hal = "1"
embedded-hal-async = "1"
defmt = "0.3"

Example

use st7789driver::{St7789, Timer_};
use embedded_hal::digital::OutputPin;
use embedded_hal_async::spi::SpiBus;

struct MyTimer;
impl Timer_ for MyTimer {
    fn delay_ms(&self, ms: u64) -> impl core::future::Future<Output = ()> {
        async move {
            // Implement your async delay here , 1ms would be ok
        }
    }
}

// Assume you have implementations for spi, cs, and dc
let mut lcd = St7789::new(spi, cs, dc, MyTimer);

// Initialization and basic operations
lcd.init().await.unwrap();
lcd.set_row(0, 319).await.unwrap();
lcd.set_col(0, 239).await.unwrap();
lcd.write_memory().await.unwrap();// send write data command
lcd.write_data(&[0x00]).await.unwrap();// send real data

API Overview

• init(): Initialize the display
• set_row(start, end): Set row address
• set_col(start, end): Set column address
• write_memory(): Write to video memory
• write_data(data): Write data

Dependencies

• embedded-hal
• embedded-hal-async
• defmt

License

MIT License