Can I use flash memory for LTDC frame buffer or only SRAM?

[waclawek.jan · Accepted solution]

Which STM32?

Theoretically, you can use, if in that given model the LTDC has access to FLASH at all, it but it would be impractical. As you cannot overwrite small areas of FLASH without erasing large areas, techniques used to create an image are very limited, and they take long time. Also you cannot display and draw at the same time, so you would need a secondary display source while drawing, or just a blank screen.

JW

[MM..1]

Frame buffer need quick RW then realy no, but you can combine.

For example display is 800x480 but you need show only big text on possition 100,100 size 500,200.

Then you can place to FLASH background 800x480 image and configure framebuffer in any RAM only for 500x200.

[RMora.4]

Thank you.

[RMora.4]

Thank you.