A library for the Raspberry Pi Sense HAT LED Screen

crates.io docs

The Raspberry Pi Sense HAT has an 8×8 RGB LED matrix that provides its own driver for the Linux framebuffer.

This library provides a thread-safe, strong-typed, high-level API for the LED matrix, treating it as you would any other screen on a Linux box.

Usage

To use this crate with the default features, add this to your Cargo.toml: cargo [dependencies] sensehat-screen = "0.1"

or, to manually specify the features::

cargo [dependencies] sensehat-screen = { version = "0.1", default-features = false, features = ["fonts"] }

Then you can use it with your crate:

```rust extern crate sensehat_screen

use sensehat_screen::{FontCollection, FrameLine, PixelColor, Screen}; ```

Example

The following program shows how to:

```rust extern crate sensehat_screen;

use sensehat_screen::{FrameLine, PixelColor, Screen};

fn main() { let mut screen = Screen::new("/dev/fb1") .expect("Could not open the framebuffer for the screen");

let red_pixel = PixelColor::new(255, 0, 0); // The pixel color's RGB components are each in the range of 0 <= c < 256.

let all_64_pixels = vec![red_pixel; 64];   // A single vector of 8 x 8 = 64 pixel colors (rows are grouped by chunks of 8)

let all_red_screen = FrameLine::from_pixels(&all_64_pixels); // a screen frame

screen.write_frame(&all_red_screen); // show the frame on the LED matrix

} ```

Source Code Examples

Features

default

By default, the linux-framebuffer, fonts, offset, rotate, and serde-support features are included.

linux-framebuffer

In default. Use the Linux framebuffer to write to the LED matrix.

fonts

In default. A collection of legacy 8x8 fonts, renderable on the LED matrix.

See this for more information.

offset

In default. Support for offsetting the PixelFrame left/right/up/down.

rotate

In default. Support for rotating PixelFrames by 90-degree steps.

serde-support

In default. Enables support for serialization/deserialization with serde.

big-endian

Uses big-endian format, suitable for non-AMD64/x86-64 processors. This is used when encoding/decoding 16-bit RGB565 to/from 24-bit RGB.

Feature Wish List