flash-time from cube ide to a board (TouchGFX)

[Roman REITER]

Hello,

I'm using a stm32f7508-DK and so far I've only created a small gui (a page with a few functions). As I added more widgets and containers, the time to flash the board increased enormously. is that normal?? 1:46 min..

[MM..1]

Yes fonts and images

[Romain DIELEMAN · Accepted solution]

Hi,

As MM said the loading of the fonts and images can take more and more time depending on the size of the project.

You can actually skip this step if you have not changed any assets in the meantime. Can you access this link ? Otherwise I'll write it down as well.

/Romain

[Andreas Bolsch]

First of all, check sector erase time (datasheet of external flash). Erasing about 200 sectors contributes a significant part of flash time. Mass erase could be a little faster.

Another major obstacle is the integrated STLink-V2 with at most 4 MHz SWD clock. An STLink-V3 with 12 or even 24MHz would give some speedup. But attaching it is somewhat unpleasant: Either short SB11 to hold the internal STLink in reset and attach the external one via SB14 to SB17 or open SB14 to SB17 and attach the external one via target side of SB14 to SB17. (Not to forget GND).This can be done with thin enameled copper wire ...

But anyway, external flash is used due to possibly enormous capacity, this obviously comes with some drawback.

[Roman REITER]

Thank you, are right. the more images are transferred, the longer the flash process takes.

[MM..1]

For save place change image formats to L8 variants (need prepared pngs)

and fonts less bits . Too you use MCU with slim internal flash.