On Tue, May 30, 2017 at 10:49 AM, Micka <mickamus...@gmail.com> wrote:

> I'm able with the PC to use the command smartctl to get info on my SDCard
> with the protocol SMART.
>
OK, it looks like I missed something. What context are you seeing this in?
USB smart card reader, I suppose?
Like I said, the USB-to-whatever bridge you're using has to support SMART
protocol; there are even some USB-ATA bridges  that fail to do so, so maybe
the USB-SD/MMC bridge on BBB doesn't do that either.
I only used high-level tools like skdump/smartctl---never wrote
SMART-reading code like your example below. Does this code work on a
standard x86 platform where, as you say, smartcll talks to your SD card?


> I found a lot of subject on this topic, and I'm working on this piece of
> code for the moment:
>
> int ret = 0;
> struct mmc_ioc_cmd idata;
> memset(&idata, 0, sizeof(idata));
> memset(ext_csd, 0, sizeof(__u8) * 512);
> idata.write_flag = 0;
> idata.opcode = MMC_SEND_EXT_CSD;
> idata.arg = 0;
> idata.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
> idata.blksz = 512;
> idata.blocks = 1;
> mmc_ioc_cmd_set_data(idata, ext_csd);
>
> But no result for the moment!
>
>
> Le mar. 30 mai 2017 à 15:49, Przemek Klosowski <
> przemek.klosow...@gmail.com> a écrit :
>
>> SMART protocol is defined for ATA interface, and it is translated over
>> USB interface by most but not all USB-ATA bridges. I have never seen it
>> implemented for SD cards. Historically, it makes sense: SD card firmware is
>> just a tiny block management layer, although of course there's no
>> fundamental reason why it  couldn't be expanded to provide some of the
>> internal information via SMART---but it has never been done AFAIK.
>>
>> On Tue, May 30, 2017 at 8:17 AM, Micka <mickamus...@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I wanted to know if someone successfully used the command smartctl with
>>> the sd card ?
>>>
>>>
>>> It could be so usefull to know the state of the sdcard, the remaining
>>> life, etc !
>>>
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