Hello,

I am trying to use a ST7789 240x240 display with a FT810, but was wondering if I have the setup/startup sequence correct.

I believe the ST7789 needs commands written in serial mode before the RGB interface will work. I think there are three commands that are important, one to set the data width, one to select RGB format, and one to set the LCD RAM access to use the RGB input. (LCD registers RM, DM, and RIM)

I believe this is different than most LCDs, as most have the MIPI DPI interface enabled on startup, hx8357, as an example.

If I hook the ST7789 serial/SPI lines up to the MCU and send these commands before bringing the FT810 out of PD will it work as expected? Assuming I handle the reset of the LCD controller myself, the specific panel I would like to use does not have a DISP pin broken out.

Thank you!