ssd1619a

Driver for the Solomon Systech SSD1619A e-Paper display controller for embedded-graphics.

It has been tested on a WeAct Studio 4.2″ EPD module that uses a display assembly made by Holitech.

Goals

As of ssd1619a v0.1, the driver supports B/W modules and provides a blocking API for updating the display. It requires the use of a framebuffer with a capacity of 15000 bytes of graphics data for a native resolution of 400×300 pixels. Partial screen refresh is not supported; this crate is intended for displaying graphics and text that do not have any motion.

Examples

[dependencies]
ssd1619a = "0.1.0"

pub fn draw_graphics(
    spi: impl SpiDevice,
    dc: impl OutputPin,
    rst: impl OutputPin,
    busy: impl InputPin,
) -> Result<(), impl core::error::Error> {
    let interface = SpiInterface::new(spi, dc, rst, busy);
    let mut display = Builder::new(interface)
        .with_buffer(/* &'static mut [u8; 15000] */)
        .init(&mut Delay)?;

    let style = PrimitiveStyleBuilder::new()
        .fill_color(BinaryColor::On) // Black
        .build();

    Rectangle::new(Point::new(0, 40), Size::new(400, 220))
        .into_styled(style)
        .draw(&mut display)?;

    display.update(&mut Delay)
}

Minimum supported Rust version

The minimum supported Rust version for ssd1619a is 1.89.

License

The source code of ssd1619a is dual-licensed under:

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT License (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.