Mounting/Accessing SD-Card on BBB

Tue Aug 13 15:32:11 UTC 2019

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
> >
> >
> > _______________________________________________
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> > users at rtems.org
> > http://lists.rtems.org/mailman/listinfo/users
> >
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