Arduino for STM32

Posted: **Sat Feb 08, 2025 2:01 pm**

imk wrote: Sat Feb 08, 2025 12:17 am So I put the 64Gb SD card in the board again and sd.begin returns false.
Hence it seems that the STM32SD library does not support 64Gb cards .
Thanks for all your help IMK.

I've looked through STM32SD and ported FatFS code and there is support for exFAT (used for >= 64GB cards), but it might not be enabled by default.
You may need to set it to use ffconf_default_68300.h config, because I think it defaults to 80286 or 32020 which do not have exFat enabled.

Adding

Code: Select all

#define FF_DEFINED	868300

at the beginning of your sketch should work.

Posted: **Sat Feb 08, 2025 2:34 pm**

ExFatFS is not released yet. Added last week so you need to use the git repo to get it.

Arduino for STM32

STM32SD on WeAct H563 return Begin not ready

Re: STM32SD on WeAct H563 return Begin not ready

Re: STM32SD on WeAct H563 return Begin not ready