Mounting/Accessing SD-Card on BBB
Christian Mauderer
list at c-mauderer.de
Thu Aug 15 17:27:04 UTC 2019
Hello Nils,
does some other access to the file system work? Like a ls on the console
or creating a file. Can you do a `cat` on some text file on the file
system? If not: Does it work for a file in the root file system (should
be a IMFS)?
Best regards
Christian
On 15/08/2019 15:54, Nils Hölscher wrote:
> Hi,
>
> I when my app wants to open a file on the SD card dev=mmcsd-0-0 rtems
> freezes.
> Exact call is:
> fd = open(file, O_RDONLY);
> With file being the pru binary I want to upload.
>
> Thanks,
> Nils
>
> On Tue, 13 Aug 2019 at 17:56, Christian Mauderer
> <christian.mauderer at embedded-brains.de
> <mailto:christian.mauderer at embedded-brains.de>> wrote:
>
> Hello Nils,
>
> a third possibility: You could start a FTP server and push the file
> via network.
>
> Best regards
>
> Christian
>
> Am Dienstag, 13. August 2019 schrieb Nils Hölscher:
> > 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
> <mailto: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 <mailto: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>
> > > > <mailto: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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> > > >
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> >
>
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> --
> --------------------------------------------
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> Herr Christian Mauderer
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