Hello everybody!

Is there anyone that can provide an example of using a custom palette?

My settings are the following:

#define COLOR_CONVERSION_0 GUICC_8666
#define DISPLAY_DRIVER_0 GUIDRV_LIN_8

in order to set my palette I have modified the following function

int LCD_X_DisplayDriver(unsigned LayerIndex, unsigned Cmd, void * pData)
....
....
case LCD_X_SETLUTENTRY:
#ifdef MY_PALETTE
HAL_LTDC_ConfigCLUT(&hltdc, (uint32_t *)(my_palette.pPalEntries), my_palette.NumEntries, LayerIndex);
#else
HAL_LTDC_ConfigCLUT(&hltdc, (uint32_t *)&(((LCD_X_SETLUTENTRY_INFO *)pData)->Color), 1, LayerIndex);
#endif
break;
....

where my_palette is a GUI_PHYSPALETTE defined as LCD_PHYSPALETTE that is

typedef struct{
int NumEntries;
const LCD_COLOR * pPalEntries;
} LCD_PHYSPALETTE;

The problem is that if I use the palette that is produced by BitMap converter when setting 8666 color format,
namely 6 scales for every color, 16 gray levels (that should be the default palette for GUICC_8666), then everything look ok, if I try use a different palette, for instance the palette produced by Bitmap Converter when setting 256 shades of gray then the result is not ok; for instance the white background is not white, it is gray, same for the black, a different gray level but still a gray, not the black.

Is it because it is not correct to modify the switch-case in LCD_X_DisplayDriver? Do I have to add some code in the LCD_X_Config as well? Is there a emWin sample where custom palette is used?

I am using STemWin v524b.

Thanks,
Ezio