Test to use FlexBus instead of normal port for Output

[Louis]

That’s great, thanks for sharing! @easone is working to add Teensy 4.0/4.1 support using FlexBus to SmartMatrix Library. I don’t know if that helps you, or if you’re already set on the Teensy 3.6:

Teensy 4.0 Released

Here’s an update to the T4.0 driver along with some test results for bigger resolutions (up to 256x256): I would like to get this working with the SmartMatrix library soon.

(there’s not details of the port in that thread yet, but the driver is going to focus on the pins accessible with just the Teensy 4.0, and a single HUB75 output. I’ll be working on a shield for the Teensy 4)