JC
jcsoo/hub75-pio-rs
HUB75 driver for RP2040. Uses PIO and DMA to achieve high refresh rate and high color depth with zero CPU overhead.
hub75-pio-rs
An experimental HUB75 driver for
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.
nyan.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 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