Mounting/Accessing SD-Card on BBB

Nils Hölscher nilhoel1 at gmail.com
Tue Aug 13 16:01:13 UTC 2019 

Hi,

I was able to mount the sd card.
It was FAT, that was missing.

Thanks,
Nils

On Tue, 13 Aug 2019 at 17:46, Nils Hölscher <nilhoel1 at gmail.com> wrote:

> Hi,
>
> Thanks for the input I will try the SD card first.
> That way I won't have to alter the code when I want to run other stuff on
> the pru.
>
> Best,
> Nils
>
> On Tue, 13 Aug 2019 at 17:32, Gedare Bloom <gedare at rtems.org> wrote:
>
>> You can also build the PRU image into the RTEMS binary. See
>> examples-v2.git/file_io/crc/init.c
>>
>> On Tue, Aug 13, 2019 at 8:46 AM Christian Mauderer <list at c-mauderer.de>
>> wrote:
>> >
>> > 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
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>> > >
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>>
>
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