Crate epd_waveshare_async

Expand description

This crate provides an async/await interface for controlling Waveshare E-Paper displays.

It is built on top of embedded-hal-async and embedded-graphics, making it compatible with a wide range of embedded platforms.

The crate is organized around two main traits:

Epd: This trait defines the core functionality for interacting with an E-Paper display, such as initialization, refreshing, writing image data, and managing sleep states. Implementations of this trait (e.g., epd2in9::Epd2In9) provide concrete display-specific logic. Concrete implementations may also provide further functionality that doesn’t fit in the general Epd trait (e.g. modifying the border on the Epd2In9 screen).
EpdHw: This trait abstracts over the underlying hardware components required to control an E-Paper display, including SPI communication, GPIO pins (for Data/Command, Reset, and Busy signals), and a delay timer. You need to implement this trait for your chosen peripherals. This trades off some set up code (implementing this trait), for simple type signatures with only one generic parameter.

Additionally, the crate provides:

buffer module: Contains utilities for creating and managing efficient display buffers that implement embedded-graphics::DrawTarget. These are designed to be fast and compact.
<display> modules: each display lives in its own module, such as epd2in9 for the 2.9“ e-paper display.

Modules§