Content originally posted in LPCWare by jay123 on Mon Jul 20 23:28:54 MST 2015
i'm using graphic LCD with 24 color lines (8xR+8xB+8xG). i want to connect lcd with LPC1788 in 8bpp 332 mode.
anybody know connnection diagram in 332 and 323 mode?
if i configured segger for 16bit 565 color conversion mode then it takes more time to update LCD then 8 bit LCD driver.
update time of 8bit is 80% faster than 16bit so i want to interface LCD in 8bit 332 (RGB mode) only.
Segger configuration:
16 bit configuration:
#define COLOR_CONVERSION GUICC_565
#define DISPLAY_DRIVER GUIDRV_LIN_16
8 bit configuration:
#define COLOR_CONVERSION GUICC_332
#define DISPLAY_DRIVER GUIDRV_LIN_8
Result:
Sr No | Segger config | LCD Config | Conclusion
1 | 16bpp | 16 bpp | display properly but update time is too slow
2 | 8bpp | 16 bpp | not display proper shown in attach image (8bpp) but update time is better
3 | 8bpp | 8 bpp | display blank only backlight turns ON
attach image :
A,b -> display two times
c --> display junk data
in 2nd case image is drawn twice and scale by 4 but it should display as shown in attach image(expected).
which pins are use for 8bit 332 RGB mode???
please share schematic of same
