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
- Supports LED matrices with configurable scan rates (1:16, 1:32, 1:64)
- 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
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
- Address pins (4-6 pins depending on display: A, B, C, D, [E], [F])