Note on some convertible serial to SPI screen models

[piedoom]

Hello! Thanks for an excellent crate. This is not really an issue, more of a note for others.

I bought a SSD1322 screen from Aliexpress that was set up for a parallel interface, with some pads to solder to change to SPI. After a little trial and error, I learned that the correct setup is 4-wire SPI, as the 3-wire setting will not work correctly.

Hope this helps someone else running into the same issue!

[birdistheword96]

Thanks for taking the time to write this, hopefully it will help someone else!