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Re: SD on STM32H7
Posted: Thu Apr 10, 2025 4:21 am
by Giovanni
Hi,
How do you verify the reported capacity?
Giovanni
Re: SD on STM32H7
Posted: Thu Apr 10, 2025 10:09 am
by joaquin
Giovanni wrote:Hi,
How do you verify the reported capacity?
Giovanni
At hal_sdc.c :
Code: Select all
else {
/* The card is an SDC, capacity from the normal CSD.*/
sdcp->capacity = _mmcsd_get_capacity(sdcp->csd);
}
I'm illiterate at SD Card code, so may be it's not the way to check it
Re: SD on STM32H7
Posted: Thu Apr 10, 2025 12:31 pm
by Giovanni
Could you try another card? is the capacity still wrong? if so then there could be a bug there.
Giovanni
Re: SD on STM32H7
Posted: Thu Apr 10, 2025 3:04 pm
by joaquin
Giovanni wrote:Could you try another card? is the capacity still wrong? if so then there could be a bug there.
Giovanni
With a 8GB card, it reports 15.130.624, with a 64GB, it reports 122.138.624 and with a 256MB, 491.520
Re: SD on STM32H7
Posted: Fri Apr 11, 2025 11:11 am
by joaquin
joaquin wrote:Giovanni wrote:Could you try another card? is the capacity still wrong? if so then there could be a bug there.
Giovanni
With a 8GB card, it reports 15.130.624, with a 64GB, it reports 122.138.624 and with a 256MB, 491.520
I have checked on a PC, and the reported capacity by Chibios is correct, although it's in number of sectors of 512 bytes; that's the reason I saw half the capacity
Re: SD on STM32H7
Posted: Fri Apr 11, 2025 2:25 pm
by Giovanni
Ah OK, it is the number of available blocks
Giovanni