HUB75 Driver for Pynq-Z2 FPGA

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Description

This Project uses a Pynq-Z2 FPGA connected to an Adafruit 64x64 3mm Pixel Matrix connected via Adafruit RGB Matrix HAT for Raspberry Pi.

Currently this project contains a ROM with a rainbow test pattern. The Rom is connected directly to the to_display module which creates the HUB75 signal. The clock for the module is driven by the PS - System.

The Project was built using Vivado 2022.1

Roadmap

• Refactoring to_display module to a proper IP-Core
• Baremetal Driver for setting Pixels
• Conway's game of life
• Baremetal Driver for drawing Lines etc.
• Petalinux

Building and running

you can directly build and run the project by using the following command:

make all

the script expects:

• vivado/bin being part of $PATH
• Vitis being stored to /opt/xilinx/Vitis/2022.1

Known-Issues

The ICs on the pixel matrix i use (Adafruit 64x64 3mm) are only able to be driven with a 30Mhz clock, so i have to set BIT_DEPTH to 7 bits to keep a useable refreshrate.

Links to parts used in this project

Name	Link
Pynq-Z2 FPGA	https://www.tulembedded.com/FPGA/ProductsPYNQ-Z2.html
Adafruit RGB Matrix HAT + RTC for Raspberry Pi - Mini Kit	https://www.adafruit.com/product/2345
Adafruit 64x64 RGB LED Matrix - 3mm Pitch - 192mm x 192mm	https://www.adafruit.com/product/4732

Here is an example of the display showing conway's game of life: