64x64 Led Panel Matrix HUB75E Pio programming

[mxclouti]

Hi. I'm new to micropython and the rp pico, but I've been programming for more than 35 years now !

I'm using VS Code.

Now, I'm trying the display something on my 64x64 Led Matrix HUB75E using PIO programming.

I'm pretty sure all the wiring is ok because I was able to display something on the matrix using a non-pio version.
The matrix stays blank with the pio version.

Thanks.

matrix6464Hub75e.py.txt