https://github.com/kjagiello/hub75-pio-rs

HUB75 driver for RP2040. Uses PIO and DMA to achieve high refresh rate and high color depth with zero CPU overhead.
https://github.com/kjagiello/hub75-pio-rs

dma hub75 nostd pio rust

Last synced: about 2 months ago
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HUB75 driver for RP2040. Uses PIO and DMA to achieve high refresh rate and high color depth with zero CPU overhead.

• Host: GitHub
• URL: https://github.com/kjagiello/hub75-pio-rs
• Owner: kjagiello
• License: mit
• Created: 2022-08-28T20:53:05.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-02-05T21:18:44.000Z (11 months ago)
• Last Synced: 2024-10-31T09:50:17.637Z (about 2 months ago)
• Topics: dma, hub75, nostd, pio, rust
• Language: Rust
• Homepage: https://docs.rs/hub75-pio
• Size: 35.2 KB
• Stars: 12
• Watchers: 3
• Forks: 7
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# hub75-pio-rs

An **experimental** HUB75 driver for

[RP2040](https://www.raspberrypi.com/products/rp2040/). Utilizes Programmable

I/O (PIO) units in combination with DMA to achieve high refresh rates, true

color depth and zero CPU overhead without sacrificing quality.

https://user-images.githubusercontent.com/74944/187094663-2f52e020-ccb2-4103-b69b-af8ee2185dd0.mp4

## Features

- Supports LED matrices up to 64x32 pixels with 1:16 scanline

- High refresh rate (approx. 2100 Hz with 24 bit color depth on a 64x32

  display)

- Does not utilize CPU for clocking out data to the display – all the work is

  done by the PIOs and the DMA controller

- Uses binary color modulation

- Double buffered

- Implements [embedded-graphics](https://github.com/embedded-graphics/embedded-graphics) traits

## Requirements

The current implementation assumes that the following groups of data outputs

are assigned to consecutive pins on the RP2040:

- R1, G1, B1, R2, G2, B2

- ADDRA, ADDRB, ADDRC, ADDRD