LPC1788 8bpp LCD Interface connection

lpcware — Wed, 15 Jun 2016 17:22:14 GMT

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

Re: LPC1788 8bpp LCD Interface connection

lpcware — Wed, 15 Jun 2016 17:22:15 GMT

Content originally posted in LPCWare by jay123 on Tue Jul 21 22:58:41 MST 2015
NXP please provide solution.

pin assignment missing in usermanual..

topic Re: LPC1788 8bpp LCD Interface connection in LPC Microcontrollers

LPC1788 8bpp LCD Interface connection

Re: LPC1788 8bpp LCD Interface connection