Mounting/Accessing SD-Card on BBB

[Christian Mauderer]

Hello Nils,

that's a bit odd. I attached an expected output below. Some guesses:

- Did you add FAT file system to your application?
- Is there some odd formatting on the SD? Normally at least the FAT
partition used by U-Boot should be visible.
- Is your BDBUF configuration OK?
- Do you have enough file descriptors?

Beneath that: If you only need something where you can put some files,
you can try to connect a USB stick instead. Maybe that works better.

Best regards

Christian


media listener: event = DISK ATTACH, state = INQUIRY, src = mmcsd
media listener: event = DISK ATTACH, state = SUCCESS, src = mmcsd, dest
= /dev/mmcsd-0
media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-0
mmcsd0: 4GB <SDHC TO 15.15 SN 000002F6 MFG 02/2017 by 25 DY> at mmc0
24.0MHz/4bit/65535-block
media listener: event = MOUNT, state = FAILED, src = /dev/mmcsd-0
media listener: event = PARTITION INQUIRY, state = INQUIRY, src =
/dev/mmcsd-0
media listener: event = PARTITION INQUIRY, state = SUCCESS, src =
/dev/mmcsd-0
media listener: event = PARTITION ATTACH, state = INQUIRY, src =
/dev/mmcsd-0
media listener: event = PARTITION ATTACH, state = SUCCESS, src =
/dev/mmcsd-0, dest = /dev/mmcsd-0-0
media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-0-0
media listener: event = MOUNT, state = SUCCESS, src = /dev/mmcsd-0-0,
dest = /media/mmcsd-0-0
media listener: event = DISK ATTACH, state = INQUIRY, src = mmcsd
media listener: event = DISK ATTACH, state = SUCCESS, src = mmcsd, dest
= /dev/mmcsd-1
media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-1
mmcsd1: 4GB <MMCHC MMC04G 5.8 SN 160D224B MFG 09/2014 by 112 0x0000> at
mmc1 48.0MHz/8bit/65535-block
media listener: event = MOUNT, state = FAILED, src = /dev/mmcsd-1
media listener: event = PARTITION INQUIRY, state = INQUIRY, src =
/dev/mmcsd-1
media listener: event = PARTITION INQUIRY, state = FAILED, src =
/dev/mmcsd-1
media listener: event = DISK ATTACH, state = INQUIRY, src = mmcsd1boot
mmcsd1boot0: 2MB partion 1 at mmcsd1
mmcsd1boot1: 2MB partion 2 at mmcsd1
mmcsd1rpmb: 131kB partion 3 at mmcsd1


On 13/08/2019 13:30, Nils Hölscher wrote:
> Hi,
> 
> Thanks for the help.
> I tried to use your code, but I always get "ERROR: SD could not be
> mounted after timeout".
> Even after raising the waiting time.
> 
> The sources I use start here:
> https://github.com/nilhoel1/rtems-pru/blob/pruss-shell/main.c#L110
> 
> And my uart output is:
> ""
> waiting for SD...
> 
> usbus0: 480Mbps High Speed USB v2.0
> usbus1: 480Mbps High Speed USB v2.0
> media listener: event = DISK ATTACH, state = INQUIRY, src = mmcsd
> media listener: event = DISK ATTACH, state = SUCCESS, src = mmcsd, dest
> = /dev/mmcsd-0
> media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-0
> ugen0.1: <Mentor Graphics OTG Root HUB> at usbus0
> ugen1.1: <Mentor Graphics OTG Root HUB> at usbus1
> uhub0: <Mentor Graphics OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1>
> on usbus0
> uhub1: <Mentor Graphics OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1>
> on usbus1
> media listener: event = MOUNT, state = FAILED, src = /dev/mmcsd-0
> media listener: event = PARTITION INQUIRY, state = INQUIRY, src =
> /dev/mmcsd-0
> media listener: event = PARTITION INQUIRY, state = SUCCESS, src =
> /dev/mmcsd-0
> media listener: event = PARTITION ATTACH, state = INQUIRY, src =
> /dev/mmcsd-0
> media listener: event = PARTITION ATTACH, state = SUCCESS, src =
> /dev/mmcsd-0, dest = /dev/mmcsd-0-0
> media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-0-0
> media listener: event = MOUNT, state = FAILED, src = /dev/mmcsd-0-0
> media listener: event = DISK ATTACH, state = INQUIRY, src = mmcsd
> media listener: event = DISK ATTACH, state = SUCCESS, src = mmcsd, dest
> = /dev/mmcsd-1
> media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-1
> media listener: event = MOUNT, state = FAILED, src = /dev/mmcsd-1
> media listener: event = PARTITION INQUIRY, state = INQUIRY, src =
> /dev/mmcsd-1
> media listener: event = PARTITION INQUIRY, state = SUCCESS, src =
> /dev/mmcsd-1
> media listener: event = PARTITION ATTACH, state = INQUIRY, src =
> /dev/mmcsd-1
> media listener: event = PARTITION ATTACH, state = SUCCESS, src =
> /dev/mmcsd-1, dest = /dev/mmcsd-1-0
> media listener: event = MOUNT, state = INQUIRY, src = /dev/mmcsd-1-0
> media listener: event = MOUNT, state = FAILED, src = /dev/mmcsd-1-0
> media listener: event = DISK ATTACH, state = INQUIRY, src = mmcsd1boot
> uhub0: 1 port with 1 removable, self powered
> uhub1: 1 port with 1 removable, self powered
> ERROR: SD could not be mounted after timeout
> ""
> 
> Thanks,
> Nils
> 
> On Mon, 12 Aug 2019 at 18:01, Christian Mauderer <list at c-mauderer.de
> <mailto:list at c-mauderer.de>> wrote:
> 
>     On 12/08/2019 07:28, Nils Hölscher wrote:
>     > Hi,
>     >
>     > Can anyone help me with this?
>     > I need to access the BBB's SD-Card, so that I can load my pru
>     example on
>     > the pru.
>     >
>     > Thanks,
>     > Nils
>     >
> 
>     Hello Nils,
> 
>     take a look at the following application:
> 
>     https://gitlab.com/c-mauderer/rtems-bbb/blob/master/apps/wifi-sample/init.c#L64
> 
>     https://gitlab.com/c-mauderer/rtems-bbb/blob/master/apps/wifi-sample/libbsdhelper.c#L122
> 
>     You should mainly need the stuff from the libbsdhelper_init_sd_card()
>     and libbsdhelper_wait_for_sd().
> 
>     Please note that the SD card needs quite some time to initialize on BBB.
>     I haven't had a look at it why that is the case.
> 
>     Best regards
> 
>     Christian
> 
> 
> _______________________________________________
> users mailing list
> users at rtems.org
> http://lists.rtems.org/mailman/listinfo/users
>