7i73 LCD shows rubisch

What is the "addf" order in your HAL file?

I am wondering if the lcd component needs to be between the read and write functions in the thread sequence (I can't see why it would matter, but...)

Can you download the attached file and then test it with (That is a capital i, not a 1)

You should be able to change pages with etc

Just to prove that it works for me

I have to modify to
loadrt hm2_eth board_ip="192.168.1.121" config="sserial_port_0=2100000"
otherwise it does not connect the 7i73.

And strangely it does also not accept writing something like =0x21

But result is not better, still scrambled

I do use all ports on the 7i73, the 4 analog inputs and all digital in and outputs....No keyboard

And here my video