Content originally posted in LPCWare by Wouter on Wed Jul 31 01:01:37 MST 2013
Hi Martin,
You would need to use 32bpp framebuffer for 18-bit RGB.
I'd recommend to switch to 5:6:5 (16-bit) mode. This will save memory, but more importantly reduce the bus bandwidth used by the LCD controller.
You can wire your display for 18-bit mode, and always decide in SW to use 16-bit or 18-bit mode.
Regards,
Wouter