I only have enough storage to have 1 framebuffer at L4 size for the stm32f7X9. The problem is seems is that the LTDC only supports L8 as the lowest pixel density.
The C define is LTDC_PIXEL_FORMAT_L8
http://www.tjaekel.com/lyrebird_APP/DualMCU_doxygen/stm32f7xx__hal__ltdc_8h_source.html
Is there any way around this. Can i use a small buffer for output and use the DMA2d to fill that buffer when the screen needs filling. The DMA2d has support for L4
