Access Image/Font arrays during runtime from external flash

How to
1

Hello @kisvegabor,

I’m using STM32H7A3VIT6, its internal flash is insufficient for the project. Mainly images and fonts have the high flash usage. So, I thought to store them on the External NOR Flash and loading them from it during runtime.
I also came across using a Quad SPI Flash in memory mapped mode, which can map external flash to MCUs internal address.

It would be good if you could help to achieve this.

Regards,
Keshav Aggarwal

2

Hi,

If memory mapping is an option you can set LV_ATTRIBUTE_LARGE_CONST in lv_conf.h to an __attribute__((...)) value. LV_ATTRIBUTE_LARGE_CONST is added to all image and font arrays so this way you can easily move all these to external memory.

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