# Usage To use this driver: 1. Add in your `gfxconf.h`: a) `#define GFX_USE_GDISP GFXON` 2. To your makefile add the following lines: ``` include $(GFXLIB)/gfx.mk include $(GFXLIB)/drivers/gdisp/STM32LTDC/driver.mk ``` 3. Add a `board_STM32LTDC.h` to you project directory (or board directory) based on one of the templates. # 2nd layer Two things need to happen in order to use the 2nd LTDC layer: - Set `LTDC_USE_2ND_LAYER` to `GFXON` in the board file. - Set `GDISP_TOTAL_DISPLAYS` to `2` in `gfxconf.h`. The 2nd layer is exposed as a separate display. Use `gdispGetDisplay()` to retrieve the individual layers. For more information, see: - https://wiki.ugfx.io/index.php/Multiple_displays#Example_-_Same_controller - https://wiki.ugfx.io/index.php/Multiple_displays#Access_the_displays