Library for graphics GPU FT81x with MCU´s STM32Fx, Team FT81xmania, https://ft81xmania.com/comunidad/
How do I use GD with a 800x480 display?
After calling GD.begin() you can set the scanout registers for 800x480 like this:
GD.wr16(vc.REG_HCYCLE, 928);
GD.wr16(vc.REG_HOFFSET, 88);
GD.wr16(vc.REG_HSIZE, 800);
GD.wr16(vc.REG_HSYNC0, 0);
GD.wr16(vc.REG_HSYNC1, 48);
GD.wr16(vc.REG_VCYCLE, 525);
GD.wr16(vc.REG_VOFFSET, 32);
GD.wr16(vc.REG_VSIZE, 480);
GD.wr16(vc.REG_VSYNC0, 0);
GD.wr16(vc.REG_VSYNC1, 3);
GD.wr16(vc.REG_CSPREAD, 1);
GD.wr16(vc.REG_DITHER, 1);
GD.wr16(vc.REG_PCLK_POL, 0);
GD.wr16(vc.REG_PCLK, 4);
How do I change the select pin assignments?
To change the GPU select from pin 8, modify #define CS at the start of transports/wiring.h
To change microSD select from pin 9, modify #define SD_PIN at the start of GD2.cpp
How do you run in portrait mode?
After calling GD.begin() set the orientation like this::
GD.cmd_setrotate(2);
to enter portrait mode. The argument controls orientation, 0 and 1 are landscape. 2 and 3 are portrait.