[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Eric Kirby]

Hello Dr. Yoder,

I'm excited for this class.

-Eric Kirby

On Wednesday, September 2, 2020 at 7:46:52 PM UTC-4 james...@gmail.com 
wrote:

> Hi Dr. Yoder,
>
> Thank you for being open to teaching other topics! Looking forward to this 
> quarter!
>
> -James W.
>
> On Wednesday, September 2, 2020 at 4:37:43 PM UTC-4 mors...@gmail.com 
> wrote:
>
>> Hi Dr. Yoder
>>
>> On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com 
>> wrote:
>>
>>> Hi Dr. Yoder,
>>>
>>> Looking forward to this quarter!
>>>
>>> -Emily
>>>
>>> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>>>
>>>> The purpose of this posting is to announce that I'm once again teaching 
>>>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>>>> the  *BeagleBone Black.* 
>>>> I'm teaching as open-source as I can and have have posted many of 
>>>> course 
>>>> materials on eLinux.org [2] and github[3].
>>>>
>>>> I'm always open to ideas on what topics to include in the class and 
>>>> suggestions for interesting course projects.  For example we are 
>>>> starting
>>>> Python this week and hope to be writing simple kernel module 5 weeks 
>>>> from 
>>>> now.  That will be followed by a week of PRU programming.
>>>>
>>>> Class, please respond to this posting.  Others, please welcome my class.
>>>>
>>>> --Mark 
>>>>
>>>> --Prof. Mark A. Yoder 
>>>>   Rose-Hulman Institute of Technology [4] 
>>>>
>>>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>>>> [2] http://elinux.org/index.php?title=Category:ECE497 
>>>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>>>> [4] http://www.rose-hulman.edu 
>>>>
>>>

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[beagleboard] Re: Welcome the Fall 2020 Embedded Linux Class

[Eric Morse]

Hi Dr. Yoder

On Wednesday, September 2, 2020 at 1:43:31 PM UTC-4 emil...@gmail.com wrote:

> Hi Dr. Yoder,
>
> Looking forward to this quarter!
>
> -Emily
>
> On Tuesday, September 1, 2020 at 4:05:29 PM UTC-4 Mark A. Yoder wrote:
>
>> The purpose of this posting is to announce that I'm once again teaching 
>> an Embedded Linux class based on the BeagleBone[1]. This time I'm using
>> the  *BeagleBone Black.* 
>> I'm teaching as open-source as I can and have have posted many of course 
>> materials on eLinux.org [2] and github[3].
>>
>> I'm always open to ideas on what topics to include in the class and 
>> suggestions for interesting course projects.  For example we are starting
>> Python this week and hope to be writing simple kernel module 5 weeks from 
>> now.  That will be followed by a week of PRU programming.
>>
>> Class, please respond to this posting.  Others, please welcome my class.
>>
>> --Mark 
>>
>> --Prof. Mark A. Yoder 
>>   Rose-Hulman Institute of Technology [4] 
>>
>> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
>> [2] http://elinux.org/index.php?title=Category:ECE497 
>> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
>> [4] http://www.rose-hulman.edu 
>>
>

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[beagleboard] Re: How to interface this 16x2 RGB LCD?

[Eric Sales]

this Driver IC is SPLC780D， it support 3.3V.  you can find spec here, in 
page23.
https://pdf1.alldatasheet.com/datasheet-pdf/view/126648/ETC1/SPLC780D.html

the only problem is, I guess, when you connect to 3.3V, the display shows 
very light image. 
when you use 3.3V, the IC won't damage. you can try:)

i'm working in www.hello-lighting.com, as a LCD/TFT engineer, any question 
about LCD/TFT, you can write to me.
best regards!



在 2018年4月2日星期一 UTC+8上午9:59:57，engine...@gmail.com写道：
>
> I am planning to interface this 16x2 LCD (datasheet: 
> https://focuslcds.com/product/16x2-rgb-character-lcd-c162albfgs16wt55pab) 
> from focusLCDs.com to the Pocket Beagle.
>
> But I don't know where to start.
>
> Thanks and I am looking forward to your help.
>

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[beagleboard] Re: kern.log getting spammed with omap_hsmmc invalid cookie message

[Eric Blum]

I would really appreciate any guidance on this, It is happening across 
several systems and leading to some issues with data collection


On Wednesday, March 20, 2019 at 8:28:10 PM UTC-4, Eric Blum wrote:
>
> Hello
>
> I am using a BeagleBone Black for some remote data reading purposes.
>
> Every once and a while the device space will completely fill up very 
> rapidly and it seems like the culprit is kern.log (and syslog) getting 
> spammed with the same message:
>
> ubuntu@BBB-00946:/var/log$ tail -f kern.log
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.623874] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723116
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.624084] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723115
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.624292] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723114
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.624672] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723113
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.636575] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723112
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.659169] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723111
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.661684] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723110
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.671142] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723109
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.672614] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723108
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.676891] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723107
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.677989] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723106
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.683226] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723105
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.683726] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723104
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.683957] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723103
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.684170] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723102
> Mar 20 21:36:26 BBB-00946 kernel: [10458038.684557] omap_hsmmc 
> 481d8000.mmc: [omap_hsmmc_pre_dma_transfer] invalid cookie: 
> data->host_cookie 1 host->next_data.cookie -2146723101
> ...
>
> clearing the log file and rebooting the system fixes the issue at least 
> for awhile but I would like to understand what is happening.
>
> Does anybody know where this is coming from and what the best way to deal 
> with it is?
>
> some system info
> ubuntu@BBB-00946:/var/log$ lsb_release -a
> No LSB modules are available.
> Distributor ID: Ubuntu
> Description: Ubuntu 16.04.5 LTS
> Release: 16.04
> Codename: xenial
>
> ubuntu@BBB-00946:/var/log$ uname -a
> Linux BBB-00946 4.14.24-ti-r37 #1 SMP Thu Mar 8 00:36:50 UTC 2018 armv7l 
> armv7l armv7l GNU/Linux
>
> let me know if there is any other info I can provide.
>
> thanks
> - Eric
>

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Re: [beagleboard] BeagleBone Black FTDI console

[Eric]

Jason- I'll get the process started of doing another run.

On Fri, Aug 10, 2018 at 05:37:32PM -0400, Jason Kridner placed into existence:
]I still need these often when doing cape verification. Would you think
]about doing another run? 
] 
]On Mon, Jun 24, 2013 at 12:53 PM Eric Brundick <[1]spiri...@gmail.com>
]wrote:
] 
]  Hi folks, just wanted to mention a gadget I've produced and is for
]  sale.  It's an FTDI (FT230X) board for the BeagleBone Black that
]  "friction fits" the 6-pin header and sits low profile so it won't
]  interfere with cape stacking-
]  
[2]https://www.tindie.com/products/spirilis/beaglebone-black-ftdi-friction-fit/
]  I intend to release the design files & gerbers in a day or 2 so folks
]  can produce these themselves if they'd like.  Will post a reply with a
]  link when it's public.
] 
]  --
]  For more options, visit [3]http://beagleboard.org/discuss
]  ---
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]   
]   
] 
]--
][6]https://beagleboard.org/about
] 
] References
] 
]Visible links
]1. mailto:spiri...@gmail.com
]2. 
https://www.tindie.com/products/spirilis/beaglebone-black-ftdi-friction-fit/
]3. http://beagleboard.org/discuss
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]5. https://groups.google.com/groups/opt_out
]6. https://beagleboard.org/about

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Re: [beagleboard] How to build beagleboard images at beagleboard.org

[Eric McKenzie]

Hi Robert,

Thank you for your previous help with the usb gadgetfs module.  I have the
BB connected over USB to a driver on the PC.

Do you know how to change the VID/PID of the USB?

I am using your script:
/opt/scripts/boot/am335x_evm.sh

This line enables the g_multi:
modprobe g_multi file=${boot_drive} cdrom=0 ro=0 stall=0 removable=0
nofua=1 ${g_ne$...

I'd like to modify the VID and PID.  Right now it comes up as VID = 0x1d6b
and PID = 0x0104.

Do you know where these come from?

Thanks for your help.

- Eric



On Mon, Sep 25, 2017 at 3:50 PM, Robert Nelson 
wrote:

> On Mon, Sep 25, 2017 at 2:45 PM, Eric McKenzie 
> wrote:
> > Hi,
> >
> > Sorry if this question has an obvious answer, but I can't seem to figure
> it
> > out.
> >
> > I'd like to build the images at: http://beagleboard.org/latest-images
> > myself.  I can download the latest debian kernel and build it with the
> > beaglebone configuration, but I'd like to build something closer to the
> > "Stretch IoT (non-GUI)" beaglebone image myself so I can add a kernel
> module
> > into it.  (specifically I'd like to load gadgetfs so that I can have my
> > beaglebone act as a usb device)
> >
> > Are the configuration files for the beaglebone.org images available
> > publicly?
> >
> > Thank you for any help.
>
> https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.
> sh#L487-L548
>
> You'll find this under /opt/scripts/boot/
>
> Regards,
>
>
> --
> Robert Nelson
> https://rcn-ee.com/
>

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Re: [beagleboard] Immediate Hire -- Mainframe Developer@MO

[Eric Keller]

I know someone who works as a Cobol programmer.  I think he's 52.  Never
did ask him how he chose such a hellish occupation.  Technically I'm a
Cobol programmer, but it has been 30 years since I have written anything in
it.

I'm sure there are a lot of them in banking and medicine.

On Wed, Apr 25, 2018 at 6:52 PM, evilwulfie  wrote:

> they are looking for a 80 year old programmer. Who uses COBOL anymore ?
> On 4/25/2018 2:53 PM, Stuart Longland wrote:
> > On 26/04/18 07:34, EYWUS HIRING wrote:
> >> 3 or more years of recent US railroad industry experience as a Mainframe
> >> Developer is required (Union Pacific, Burlington Northern Santa Fe
> >> (BNSF), Norfolk Southern, CSX, Kansas City Southern)
> >>
> >>  5-7 years’ experience as a software developer with COBOL, CICS, JCL,
> >> SQL, Microfocus COBOL and DB2 is required.
> >>
> > Okay, stupid question, how on earth are they managing to run all that on
> > BeagleBones?  I didn't think they counted as mainframes.
> >
>
> --
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>

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[beagleboard] Re: Custom BBB with DDR MT41K256M16TW-107 uboot issue

['Eric Schm.' via BeagleBoard]

Could somebody give an advise please?

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[beagleboard] Custom BBB with DDR MT41K256M16TW-107 uboot issue

['Eric Schm.' via BeagleBoard]

Hello everyone,

I have a custom board similar to the beaglebone Black but without eMMC and 
without HDMI and I replaced the Kingston DDR with Micron MT41K256M16TW-107. 
I use the uboot version 2017.11 and create the uboot with the following 
commands:
  
- make CROSS_COMPILE=arm-linux-
gnueabihf- distclean
- make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 
am335x_boneblack_defconfig 
- make CROSS_COMPILE=arm-linux-gnueabihf- -j4

I've tried to bring up the board and calculate the DDR values and add them 
to the ddr_defs.h. After enter "#define DEBUG" to the file 
ti_am335x_common.h, I see that the bootup stops at the DDR. Here a output 
from the booting and where it stops. 

...
I2C:   omap24_i2c_findpsc: speed [kHz]: 100 psc: 0xb sscl: 0xd ssch: 0xf
ready
initcall: 8080ce1d
DRAM:  initcall: 80801f79
initcall: 8080cbf7
initcall: 8080cbf7
initcall: 8080cbf7
initcall: 8080cf19
Monitor len: 000BA7E8
Ram size: 2000
Ram top: A000
initcall: 8080cbd1
initcall: 8080cc01
TLB table from 9fff to 9fff4000
initcall: 8080cbe5
initcall: 8080ce7f
initcall: 8080ccfd
Reserving 745k for U-Boot at: 9ff35000
initcall: 8080ccd5
Reserving 32896k for malloc() at: 9df15000
initcall: 8080cde5
Reserving 80 Bytes for Board Info at: 9df14fb0
initcall: 8080cbe9
initcall: 8080ccad
Reserving 216 Bytes for Global Data at: 9df14ed8
initcall: 8080cc5d
initcall: 8080ce83
initcall: 8080ce8f
initcall: 8080cf75
initcall: 80801f8f
initcall: 8080cea5

RAM Configuration:
Bank #0: 8000 512 MiB

DRAM:  512 MiB
initcall: 8080cc49
New Stack Pointer is: 9df14eb0
initcall: 8080cbf7
initcall: 8080cdb9
initcall: 8080ce87
initcall: 8080cd61
Relocation Offset is: 1f735000
Relocating to 9ff35000, new gd at 9df14ed8, sp at 9df14eb0
initcall: 9ff41fb5
initcall: 9ff41fb9
initcall: 8080d0e1 (relocated to 9ff420e1)
dram_bank_mmu_setup: bank: 0
initcall: 8080d0b9%(relocated to 9ff420b9)
efi_runtime_relocate: Relocating to offset=9ff35000
...

Has someone an idea what I forget to modify?
I've also tried to bring up the board with an old angström image. There it 
stops in the bootup of angström. Therefore I think that it has to be a 
wrong configuration in the software/uboot.
Thank you for your help.

Best regards
eric

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U-Boot SPL 2017.11 (Mar 12 2018 - 16:26:25)
omap24_i2c_findpsc: speed [kHz]: 100 psc: 0xb sscl: 0xd ssch: 0xf
Trying to boot from MMC1
malloc_simple: size=x, ptr=2c, limit=2d4: 81f002a8
malloc_simple: size=x, ptr=18, limit=2ec: 81f002d4
malloc_simple: size=x, ptr=168, limit=454: 81f002ec
malloc_simple: size=x, ptr=2c, limit=480: 81f00454
malloc_simple: size=x, ptr=168, limit=5e8: 81f00480
part_init: try 'EFI': ret=-1
part_init: try 'DOS': ret=0
spl: mmc boot mode: fs
81f00600
81f10740
81f10940
VFAT Support enabled
FAT32, fat_sect: 32, fatlength: 1103
Rootdir begins at cluster: 2, sector: 2238, offset: 117c00
Data begins at: 2236
Sector size: 512, cluster size: 1
FAT read(sect=2238), clust_size=1, DIRENTSPERBLOCK=d
FAT32: entry: 0x0002 = 2, offset: 0x0002 = 2
debug: evicting -1, dirty: 0
FAT32: ret: 0x007e, entry: 0x0002, offset: 0x0002
reading u-boot.img
Filesize: u bytes
u bytes
gc - clustnum: 21102, startsect: 23338
spl: payload image: *s load addr: 0x4 size: -2139095072
81f11540
81f21680
81f21880
VFAT Support enabled
FAT32, fat_sect: 32, fatlength: 1103
Rootdir begins at cluster: 2, sector: 2238, offset: 117c00
Data begins at: 2236
Sector size: 512, cluster size: 1
FAT read(sect=2238), clust_size=1, DIRENTSPERBLOCK=d
FAT32: entry: 0x0002 = 2, offset: 0x0002 = 2
debug: evicting -1, dirty: 0
FAT32: ret: 0x007e, entry: 0x0002, offset: 0x0002
reading u-boot.img
Filesize: u bytes
u bytes
FAT32: entry: 0x526e = 21102, offset: 0x016e = 366
debug: evicting 0, dirty: 0
FAT32: ret: 0x526f, entry: 0x526e, offset: 0x016e
FAT32: entry: 0x526f = 21103, offset: 0x016f = 367
FAT32: ret: 0x5270, entry: 0x526f, offset: 0x016f
FAT32: entry: 0x5270 = 21104, offset: 0x0170 = 368
FAT32: ret: 0x5271, entry: 0x5270, offset: 0x0170
FAT32: entry: 0x5271 = 21105, offset: 0x0171 = 369
FAT32: ret: 0x5272, entry: 0x5271, offset: 0x0171
FAT32: entry: 0x5272 = 21106, offset: 0x0172 = 370
FAT32: ret: 0x5273, entry: 0x5272, offset: 0x0172
FAT32: entry: 0x5273 = 21107, offset: 0x0173 = 371
FAT32: ret: 0x5274, entry: 0x5273, offset: 0x0173
FAT32: entry: 0x5274 = 

[beagleboard] BBB with MT41K256M16TW-107 uboot issue

['Eric Schm.' via BeagleBoard]

Hello everyone,

I have a custom board similar to the beaglebone Black but without eMMC and 
without HDMI and I replaced the Kingston DDR with Micron MT41K256M16TW-107. 
I use the uboot version 2017.11 and create the uboot with the following 
commands:
  
- make CROSS_COMPILE=arm-linux-gnueabihf- distclean
- make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 
am335x_boneblack_defconfig 
- make CROSS_COMPILE=arm-linux-gnueabihf- -j4

I've tried to bring up the board and calculate the DDR values and add them 
to the ddr_defs.h. After enter "#define DEBUG" to the file 
ti_am335x_common.h, I see that the bootup stops at the DDR. Here a output 
from the booting and where it stops. 

...
I2C:   omap24_i2c_findpsc: speed [kHz]: 100 psc: 0xb sscl: 0xd ssch: 0xf
ready
initcall: 8080ce1d
DRAM:  initcall: 80801f79
initcall: 8080cbf7
initcall: 8080cbf7
initcall: 8080cbf7
initcall: 8080cf19
Monitor len: 000BA7E8
Ram size: 2000
Ram top: A000
initcall: 8080cbd1
initcall: 8080cc01
TLB table from 9fff to 9fff4000
initcall: 8080cbe5
initcall: 8080ce7f
initcall: 8080ccfd
Reserving 745k for U-Boot at: 9ff35000
initcall: 8080ccd5
Reserving 32896k for malloc() at: 9df15000
initcall: 8080cde5
Reserving 80 Bytes for Board Info at: 9df14fb0
initcall: 8080cbe9
initcall: 8080ccad
Reserving 216 Bytes for Global Data at: 9df14ed8
initcall: 8080cc5d
initcall: 8080ce83
initcall: 8080ce8f
initcall: 8080cf75
initcall: 80801f8f
initcall: 8080cea5

RAM Configuration:
Bank #0: 8000 512 MiB

DRAM:  512 MiB
initcall: 8080cc49
New Stack Pointer is: 9df14eb0
initcall: 8080cbf7
initcall: 8080cdb9
initcall: 8080ce87
initcall: 8080cd61
Relocation Offset is: 1f735000
Relocating to 9ff35000, new gd at 9df14ed8, sp at 9df14eb0
initcall: 9ff41fb5
initcall: 9ff41fb9
initcall: 8080d0e1 (relocated to 9ff420e1)
dram_bank_mmu_setup: bank: 0
initcall: 8080d0b9%(relocated to 9ff420b9)
efi_runtime_relocate: Relocating to offset=9ff35000
...

Has someone an idea what I forget to modify?
I've also tried to bring up the board with an old angström image. There it 
stops in the bootup of angström. Therefore I think that it has to be a 
wrong configuration in the software/uboot.
Thank you for your help.

Best regards
eric




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Re: [beagleboard] Re: Custom Board doesnt run with Angström Image

['Eric Schm.' via BeagleBoard]

>
> Well they are stored in the MBR.. 
>
> See: 
>
>
> https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-Bootloader:U-Boot
>  
>
> Regards, 
>
> -- 
>

Thank you for the link.
I guess thats there is a check for the emmc in the uboot when I use: 
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- am335x_boneblack_defconfig
Is that right? Do you know in which file I could disable it?
Thank you for your help

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Re: [beagleboard] Re: Custom Board doesnt run with Angström Image

['Eric Schm.' via BeagleBoard]

I tried to build my own MLO and uboot.img with this commands:
- make CROSS_COMPILE=arm-linux-gnueabihf- distclean
- make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- 
am335x_boneblack_defconfig
- make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j4

I suppose that I have to build a custom MLO and uboot.img and put it on the 
boot partition. But after flashing the Debian Image9.3 I cant find a boot 
partition. And the only MLO and uboot.img I could find was under 
/opt/backup/uboot/
Could someone give an advise how I could boot the uboot?

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Re: [beagleboard] Re: Patent CN 105652813 A

[Eric Keller]

Unfortunately, in the U.S., there is no personal use or educational use
waiver of patent protection.  However, as long as you don't bring a lot of
attention to the device, it shouldn't be a problem.  China may have much
more lenient patent laws, but I don't know this.

I feel like that wouldn't receive a  patent in the U.S.

On Fri, Nov 10, 2017 at 11:33 AM, Graham  wrote:

> It is a Chinese patent.
> Since I can not read Chinese, it is not clear to me whether it has been
> filed in Europe or Germany, specifically.
> I don't know German patent law.
> Here in the US, you are permitted to build a unit for personal use and
> study, even though it may infringe on the patent.
> You must not sell them or offer them for sale, or give them away for free
> if doing so would harm the person or company holding the patent.
> If the patent holder did not pay to file and maintain the patent in EU or
> Germany, then it may not apply to you.
> I suggest you talk to a lawyer for your school and see if German law is
> similar.
>
> --- Graham
>
> ==
>
> On Friday, November 10, 2017 at 9:31:23 AM UTC-6, steffen...@gmail.com
> wrote:
>>
>> Hello,
>> I´m a student from Germany.
>> My plan for my Bachelor thesis is to develop a system as described in the
>> Patent
>> 
>>  CN
>> 105652813 A.
>> My knowledge about Patents is very low, but is it right that I can´t use
>> a Beagle Bone Black for my Project because it has that Processor?
>> I hope anyone can answer my Question.
>>
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> .
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[beagleboard] Re: Announcing $25 PocketBeagle

[hallahan . eric]

Was thinking the same. I bet that development will start soon.

On Thursday, October 19, 2017 at 6:38:15 PM UTC-4, sfuga...@gmail.com wrote:
>
> Love this gadget. Just wish it had wifi. Would have made a great companion 
> computer for Ardupilot. And,  given the proper capes, it might be a better 
> flight controller than bbbmini. If there is enough IO exposed.
>
> On Thursday, September 21, 2017 at 11:35:38 AM UTC-4, Jason Kridner wrote:
>>
>> https://beagleboard.org/pocket
>>
>> Trying to get a few things documented at 
>> https://github.com/beagleboard/pocketbeagle/wiki/FAQ, so feel free to 
>> start throwing out questions here, on IRC or on the github site.
>>
>>
>> -- 
>> https://beagleboard.org/about
>>
>

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Re: [beagleboard] How to build beagleboard images at beagleboard.org

[Eric McKenzie]

Hi Robert,

Thank you for your very specific location of the USB gadget FS switch of 
your build script and also of course for your huge amount of work toward 
the beaglebone project in general.  

Can you point me to a document that tells me where to run your scripts 
from?   I get errors but I think it's because I haven't put your files in 
the right place.

Again, thank you for any help.

- Eric
 



>

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[beagleboard] How to build beagleboard images at beagleboard.org

[Eric McKenzie]

Hi,

Sorry if this question has an obvious answer, but I can't seem to figure it 
out.

I'd like to build the images at: http://beagleboard.org/latest-images 
myself.  I can download the latest debian kernel and build it with the 
beaglebone configuration, but I'd like to build something closer to the  
"Stretch IoT (non-GUI)" beaglebone image myself so I can add a kernel 
module into it.  (specifically I'd like to load gadgetfs so that I can have 
my beaglebone act as a usb device)

Are the configuration files for the beaglebone.org images available 
publicly?

Thank you for any help.

- Eric


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Re: [beagleboard] Re: Announcing $25 PocketBeagle

[Eric Keller]

This happens at Mouser every time there is a new 'bone.  It gets sorted
eventually.


On Sat, Sep 23, 2017 at 1:01 PM, Graham  wrote:

> And this is just to get it shipped from Ft. Worth, Texas,  to a US Citizen
> in Austin, Texas.
>
> Just think what it will be like to get one outside of the U.S.
>
> --- Graham
>
> ==
>
>
>
>
>
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> 
> .
>
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Re: [beagleboard] [Help] Cannot go to linux cnc after stepconfig files created

[Eric Keller]

machinkit isn't linuxcnc.  There is a machinekit mailing list on google
groups where you probably can get help with this.
https://groups.google.com/forum/#!forum/machinekit
Looks like a path problem to me, but PNCconf has always worked out of the
box for me.


On Fri, Jun 30, 2017 at 7:44 AM,  wrote:

> Hello everyone!
> I'm just a beginner to linux CNC,  i'm using a Black Beagle Bone device
> with machinekit installed , after i created a stepconfig profile,i saw that
> it created a shortcut and my stepconf folder on Desktop,but however i
> cannot launch it to go to axis menu. I got this enror messages:
> [img  ]http://i.imgur.com/zCU10aP.png[/img]
>
>
> [code]can't read "::sampleconfigs_node": no such variable
> can't read "::sampleconfigs_node": no such variable
> while executing
> "if {"$node" == "$::myconfigs_node"} {
>  $::detail_box insert end "Your existing configs"
>   } elseif { "$node" == "$::sampleconfigs_..."
> invoked from within
> "if [file isdirectory $node] {
>   if {"$node" == "$::myconfigs_node"} {
>  $::detail_box insert end "Your existing configs"
>   ..."
> (procedure "node_clicked" line 72)
> invoked from within
> "node_clicked "
> (command bound to event)[/code]
>
> Can anyone help me to fix this problem? Thank you very much
>
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[beagleboard] beaglebone auto loading handled by U-Boot

[daniel . eric . carlson]

I have two beaglebone boards...both SanCloud

I am trying to use /boot/uEnv.txt to load cape overlays...

One board the cape loads, the other board the cape does not...

dmesg showing board #1 below the cape loads @ 2.526116...

[2.368226] bone_capemgr bone_capemgr: Baseboard: 
'A335BNLT,SE0A,0617BBEF49D3'
[2.368259] bone_capemgr bone_capemgr: 
compatible-baseboard=ti,beaglebone-black - #slots=4
[2.406037] bone_capemgr bone_capemgr: slot #0: No cape found
[2.446033] bone_capemgr bone_capemgr: slot #1: No cape found
[2.486034] bone_capemgr bone_capemgr: slot #2: No cape found
[2.526036] bone_capemgr bone_capemgr: slot #3: No cape found
[2.526074] bone_capemgr bone_capemgr: enabled_partno PARTNO 
'BB-SPI1-01' VER 'N/A' PR '0'
[2.526085] bone_capemgr bone_capemgr: slot #4: override
[2.526100] bone_capemgr bone_capemgr: Using override eeprom data at 
slot 4
[2.526116] bone_capemgr bone_capemgr: slot #4: 'Override Board 
Name,00A0,Override Manuf,BB-SPI1-01'



vs. this board #2 below that doesn't work shows "auto loading handled by 
U-Boot" @ 2.373229

[2.373029] bone_capemgr bone_capemgr: Baseboard: 
'A335BNLT,SE0A,0617BBEF494F'
[2.373063] bone_capemgr bone_capemgr: 
compatible-baseboard=ti,beaglebone-black - #slots=4
[2.373098] bone_capemgr bone_capemgr: slot #0: auto loading handled by 
U-Boot
[2.373120] bone_capemgr bone_capemgr: slot #1: auto loading handled by 
U-Boot
[2.373159] bone_capemgr bone_capemgr: slot #2: auto loading handled by 
U-Boot
[2.373181] bone_capemgr bone_capemgr: slot #3: auto loading handled by 
U-Boot
[2.373205] bone_capemgr bone_capemgr: enabled_partno PARTNO 
'BB-SPI1-01' VER 'N/A' PR '0'
[2.373216] bone_capemgr bone_capemgr: slot #4: override
[2.373229] bone_capemgr bone_capemgr: slot #4: auto loading handled by 
U-Boot


Both have the same uboot version string 
bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 
2017.05-2-gc0970ed183]

cape overlay files are present on both boards @ /lib/firmware

When I update initramfs I see this...
update-initramfs: Generating /boot/initrd.img-4.4.62-ti-r105


My /boot/uEnv.txt looks like this on both boards...

#Docs: http://elinux.org/Beagleboard:U-boot_partitioning_layout_2.0

uname_r=4.4.62-ti-r105
#uuid=
#dtb=


###U-Boot Overlays###
###Documentation: 
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays
###Master Enable
enable_uboot_overlays=1
###
###Overide capes with eeprom
#uboot_overlay_addr0=/lib/firmware/.dtbo
#uboot_overlay_addr1=/lib/firmware/.dtbo
#uboot_overlay_addr2=/lib/firmware/.dtbo
#uboot_overlay_addr3=/lib/firmware/.dtbo
###
###Additional custom capes
#uboot_overlay_addr4=/lib/firmware/.dtbo
#uboot_overlay_addr5=/lib/firmware/.dtbo
#uboot_overlay_addr6=/lib/firmware/.dtbo
#uboot_overlay_addr7=/lib/firmware/.dtbo
###
###Custom Cape
#dtb_overlay=/lib/firmware/.dtbo
###
###Disable auto loading of virtual capes (emmc/video/wireless/adc)
#disable_uboot_overlay_emmc=1
#disable_uboot_overlay_video=1
#disable_uboot_overlay_audio=1
#disable_uboot_overlay_wireless=1
#disable_uboot_overlay_adc=1
###
###PRUSS OPTIONS
###pru_rproc (4.4.x-ti kernel)
uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-4-TI-00A0.dtbo
###pru_uio (mainline kernel)
#uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo
###
###Cape Universal Enable
#enable_uboot_cape_universal=1
###
###Debug: disable uboot autoload of Cape
#disable_uboot_overlay_addr0=1
#disable_uboot_overlay_addr1=1
#disable_uboot_overlay_addr2=1
#disable_uboot_overlay_addr3=1
###
###U-Boot fdt tweaks...
#uboot_fdt_buffer=0x6
###U-Boot Overlays###

cmdline=coherent_pool=1M net.ifnames=0 quiet

#In the event of edid real failures, uncomment this next line:
#cmdline=coherent_pool=1M net.ifnames=0 quiet video=HDMI-A-1:1024x768@60e

##Example v3.8.x
#cape_disable=capemgr.disable_partno=
#cape_enable=capemgr.enable_partno=

##Example v4.1.x
cape_disable=bone_capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN
cape_enable=bone_capemgr.enable_partno=BB-SPI1-01
##enable Generic eMMC Flasher:
##make sure, these tools are installed: dosfstools rsync
#cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh

I presently don't have access to boot console traffic.

Why does one board report auto loading handled by U-Boot, while the other 
board does not (and seems to load overlays and work properly)?

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Re: [beagleboard] NHD-7.0 unstable with Beaglebone Black

[Eric Carlson]

Robert, 
The image you provided works great. Thanks for the swift reply.

Any chance you could describe the mods you made to the base debian-lxqt 
image to make the display cooperate? I'm curious as to what I was doing 
incorrectly.


On Sunday, May 7, 2017 at 9:01:03 PM UTC-4, RobertCNelson wrote:
>
> On Sun, May 7, 2017 at 12:28 PM, Eric Carlson  > wrote: 
> > I've been having trouble getting the New Haven 7.0' touchscreen to work 
> well 
> > with my BBB rev C. I got to the point of being able start a desktop 
> manager 
> > (lxde) and move the mouse around, however after a little bit the display 
> > will start randomly flickering out. It looks like the display is 
> rebooting: 
> > Flashing white, going black for about 0.5 seconds before coming back. 
> > Occasionally I see FIFO underflow errors from tilcdc, but not everytime. 
> > 
> > I have followed a couple different methods to get to this point: 
> > 1. http://elinux.org/Nh5capeSoftware#Kernel_4.1 
> > I got the device overlay from: apt-get bb-cape-overlays, as it claims it 
> > can't find the device overlay for the display, despite it being included 
> in 
> > the kernel build. 
> > I installed SGX and tslib, but SGX crashes at boot time. Other than 
> > installing tslib, I'm not sure what I'm supposed to do with it. 
> > 
> > 2. I also tried updating uboot and updating bb-cape-overlays using 
> > instructions provided in this thread on a 4.4.36-ti kernel: 
> > 
> https://groups.google.com/forum/#!msg/beagleboard/0orEIvzkOj8/d-Ms_xpcAgAJ 
> > I did this without including SGX, tslib, or the kernel drivers provided 
> by 
> > New Haven, but it seems to work just as well as the method New Haven 
> > suggests. 
> > 
> > Any thoughts on what might be going wrong? 
>
> Well i just got that lcd and pushed out offical support less then 2 
> weeks ago.. ** 
>
> Just grab Sunday's eMMC flasher image: 
>
> https://rcn-ee.net/rootfs/bb.org/testing/2017-05-07/lxqt-4gb/ 
>
> BBB-blank* 
>
> dd' it to a microSD and let it flash the eMMC. 
>
> after it's done, take out the microSD, then plug in your display and power 
> up.. 
>
> You should see the backlight turn on followed by the lxqt desktop.. 
>
>
> ** okay 9 days ago: 
>
> https://github.com/beagleboard/bb.org-overlays/commits/master 
>
> 24bit: lcd: enable blue-and-red-wiring = "crossed"; otherwise xorg do.. 
> add: BB-BONE-NH7C-01-A0.dts … 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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[beagleboard] NHD-7.0 unstable with Beaglebone Black

[Eric Carlson]

I've been having trouble getting the New Haven 7.0' touchscreen to work 
well with my BBB rev C. I got to the point of being able start a desktop 
manager (lxde) and move the mouse around, however after a little bit the 
display will start randomly flickering out. It looks like the display is 
rebooting: Flashing white, going black for about 0.5 seconds before coming 
back. Occasionally I see FIFO underflow errors from tilcdc, but not 
everytime.

I have followed a couple different methods to get to this point:
1. http://elinux.org/Nh5capeSoftware#Kernel_4.1 
I got the device overlay from: apt-get bb-cape-overlays, as it claims it 
can't find the device overlay for the display, despite it being included in 
the kernel build.
I installed SGX and tslib, but SGX crashes at boot time. Other than 
installing tslib, I'm not sure what I'm supposed to do with it.

2. I also tried updating uboot and updating bb-cape-overlays using 
instructions provided in this thread on a 4.4.36-ti 
kernel: 
https://groups.google.com/forum/#!msg/beagleboard/0orEIvzkOj8/d-Ms_xpcAgAJ
I did this without including SGX, tslib, or the kernel drivers provided by 
New Haven, but it seems to work just as well as the method New Haven 
suggests.

Any thoughts on what might be going wrong?

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[beagleboard] A question on automatically rebooting if BBB hangs

[Eric Berg]

I'm looking at using a BBB in an embedded system. I have a 555 that I'm 
using as a watchdog which the BBB would reset every so many seconds. If a 
minute goes by and the 555 hasn't received a reset from the BBB then it 
would time out and send a signal (either high or low) to the BBB forcing it 
to reboot itself. Is there a pin on the GPIOs that will allow me to reboot 
the BBB? I noticed there is a sys_reset pin on the BBB. Would driving this 
pin low force a reboot? I've searched on Google for answers to this 
question but I'll be darned if I can find anything other than "push the 
power button".


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Re: [beagleboard] Are all Beagle* Products now subject to ITAR or 'Extreme Vetting'?

[Eric Keller]

Robert knows better, I guess.  Dell asks me these questions every time I
buy a computer.  They are just fulfilling a requirement that has been in
place for a very long time by now.


On Fri, Mar 24, 2017 at 1:51 PM, David Witten  wrote:

> Eric,
>
> It doesn't say ITAR, and I'm not shipping it anywhere.  I'm located in the
> middle of Missouri, USA.  I do not resell anything...
>
> Who knows in this world.
>
> Dave
>
> On Fri, Mar 24, 2017 at 12:47 PM, Eric Keller  wrote:
>
>> I think it's ITAR because it's a computer that can control a flying
>> vehicle.
>>
>> On Fri, Mar 24, 2017 at 1:31 PM,  wrote:
>>
>>> I just went to pre-order two BB Blue boards from Mouser.  They emailed
>>> me back a  ' Customer End User Certificate' and asking questions like:
>>>
>>> My Federal ID,
>>>
>>> Have you or has your company ever been convicted of violating U.S.
>>> Export Laws and Regulation?
>>>
>>> Are you or is your company currently listed on the Denied Person List,
>>> Unverified List or Entity List of the Bureau of Industry and Security,
>>> Department of Commerce?
>>>
>>>
>>> Looks like ITAR, but smells like 'Extreme Vetting' to me.
>>>
>>>
>>> I'm cancelling the order...
>>>
>>>
>>> Dave Witten
>>>
>>> --
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>>
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Re: [beagleboard] Are all Beagle* Products now subject to ITAR or 'Extreme Vetting'?

[Eric Keller]

I think it's ITAR because it's a computer that can control a flying
vehicle.

On Fri, Mar 24, 2017 at 1:31 PM,  wrote:

> I just went to pre-order two BB Blue boards from Mouser.  They emailed me
> back a  ' Customer End User Certificate' and asking questions like:
>
> My Federal ID,
>
> Have you or has your company ever been convicted of violating U.S. Export
> Laws and Regulation?
>
> Are you or is your company currently listed on the Denied Person List,
> Unverified List or Entity List of the Bureau of Industry and Security,
> Department of Commerce?
>
>
> Looks like ITAR, but smells like 'Extreme Vetting' to me.
>
>
> I'm cancelling the order...
>
>
> Dave Witten
>
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[beagleboard] Re: omap_i2c 48060000.i2c: timeout waiting for bus ready

[eric . rc . holcomb]

Did you ever find a solution to this?  I am facing the same problem now on 
BBB with the 2016-05-13 build of debian 8.7.

On Wednesday, July 29, 2015 at 12:45:38 PM UTC-7, Durwin wrote:
>
>
> I used information from here 
> 
>
> Everything went smoothly. Network came up.  However, every 10 seconds I get
> This message on the console.
>
> omap_i2c 4806.i2c: timeout waiting for bus ready
>
>
>

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[beagleboard] beaglebone blue availability?

[Eric Fort]

I keep hearing about the beaglebone blue and really want one or more of
them.  That said when and where can one be bought?  For that matter, the
design for the cape upon which this spin is based can be found on githib
and references are made indirectly to
http://www.strawsondesign.com/#!board-buy for purchase  of the cape.
Somehow I think it's a bit past "christmas 2014" as I write this..  so
where can one buy at least the cape?  If not the cape, Where and when will
the Beaglebone Blue be available?

Thanks,

Eric

References:

http://beagleboard.org/project/novus/
http://beagleboard.org/blog/2014-02-03-project-spotlight-robotics-cape/

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[beagleboard] Re: Touchscreen Jitter / Jumping on Beaglebone Black LCD Capes

[eric . zaluzec]

This forum thread saved my ti touch screen device. Thanks all! My 
touchscreen was having the exact symptoms mentioned in the first few posts. 
A drop in 'touch' pressure would cause the x-coordinates to drastically 
deviate from where I was touching. This made functionality of something, 
like a UI scroll-bar, useless.

I was using a v3.12 linux kernel, but was still able to modify the 
ti_am335x_tsc.c from the v3.8 patch that was listed here.

For future users, if you need a patch for the 3.12 kernel, you can find it 
here.
https://github.com/EricZaluzec/ti_am335x_tsc/blob/master/remove-pressure-jitter.patch

Cheers.
-Ez

On Tuesday, September 3, 2013 at 6:47:44 AM UTC-5, Anguel wrote:
>
> Hi!
>
> I have a 4DCAPE-43T LCD and tested it with Beaglebone Black and the latest 
> Angstrom image (2013.08.21). Unfortunately, I am experiencing input jitter 
> / jumping. I use TSlib's ts_calibrate for calibration and ts_test for 
> testing. In Gnome's calibration tools the same problem appeared: Instead of 
> clicking, I often have some dragging or even random jumping of the pointer. 
> The problem appears especially if the pressure applied to the touchscreen 
> is lower.
>
> I wrote 4D SYSTEMS support regarding the touchscreen jitter and got the 
> following reply:
> "The 4D Cape 43T LCD has been based on the LCD4 from Circuitco and uses 
> the same drivers written for the LCD4 on the Angstrom. Upon testing and 
> verification, the problem of jitter is evident as well on the LCD4 display 
> of Circuitco using the Angstrom 2013.06.20 and 2013.08.21 images so in 
> effect this has nothing to do with the hardware but it’s a software 
> problem."
>
> Actually, I found a video on Youtube with LCD7 where a similar jump / 
> jitter problem can be seen:
> http://www.youtube.com/watch?v=vEfnwL-Jxgw   @ min 2:00
>
> Any idea how the problem can be solved?
>
> Thanks in advance,
> Anguel
>

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Re: [beagleboard] Tablet display to be used with BBB?

[Eric Fort]

Can u run either vnc or x on the tablet?  That would be my suggestion.
On Jan 22, 2016 4:54 AM,  wrote:

> Hello. I was wondering if it's possible to use a tablet display As the
> display for Beaglebone black? I am at the moment in a different country so
> I'm not really thinking to buy a monitor that I would have to leave here
> since when I finish my work here. But I have a spare tablet,  functional
> and ready to use. If I can use it somehow as a screen that would be great.
> Even if I have to take apart the tablet and extract the lcd and digitizer
> that would be OK. Touch input is not my biggest concern to make it clear.
> Regards, Lemi
>
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Re: [beagleboard] BeagleBone Blue

[Eric Fort]

Ok hurt me. How much and when?  Also, what does one loose over the
black to gain the cool features it offers... N just how many Servos will it
control?
On Jan 9, 2016 10:12 PM, "Drew Fustini"  wrote:

> I was excited to see this new page:
> http://beagleboard.org/blue
>
> BeagleBone Blue is the affordable and complete educational robotics
> controller built around the popular BeagleBone open hardware computer. With
> complete robotics education curriculum, barriers to learning and growing
> are completely eliminated.
>
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[beagleboard] Re: CAN BUS MCP2515 and dts labels

[Eric Schmidt]

Did you ever figure this out? I am attempting the same thing and not having 
any luck.

Thanks,
Eric


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Re: [beagleboard] 5V Power without use of an external Transistor

[Eric Fort]

not quite sure what you're asking.  if yo want 5v regulated power you
already have it.  if you want a voltage proportionate to the pwm frequency
that's another matter.  if you want to output a rectangular waveform with
an amplitude of 5v and 90% duty cycle, there are chips that sit on the i2c
or spi busses that can do that, the pru can likely do that for you easily,
or as slow as it is yo can likely do it in software bit banging a gpio with
relitive accuracy.  what is it you want to do?

On Thu, Oct 8, 2015 at 3:01 PM, OtherBBB  wrote:

> I am working on a project that I need 5v power, but I need this power to
> be regulated based on a pulse of 25 times per second/duty cycle of .9.  Is
> there any way I can do this without an additional transistor to modulate
> the straight SYS_5V source?  Can I use VDD_5V as a PWD?  Thanks (I'm a
> bit new to the hardware side of electronics, mainly a programmer)
>
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Re: [beagleboard] Re: Can a beaglebone black go through a luggage X-ray machine?

[Eric Fort]

It's all security theatre <https://en.wikipedia.org/wiki/Security_theater>
anyway.  As difficult as it may be, I'd go after TSA for a replacement.

Eric Fort

On Tue, Sep 22, 2015 at 6:43 PM, Przemek Klosowski <
przemek.klosow...@gmail.com> wrote:

> On Tue, Sep 22, 2015 at 10:39 AM, acheesehead 
> wrote:
>
>> I went through security with one and TSA thought it was suspicious. They
>> put it under the X-Ray machine and stared at it for about a minute. It has
>> been confused since then. Sometimes boots, sometimes not. While a brief
>> exposure is probably OK. A prolonged exposure might fry something.
>>
>> Well, normally, ionizing radiation can only change charge states in
> internal electrical nodes, i.e. flip bits in memory and internal
> CPU/chipset logic. In other words, it can't damage anything permanently.
>
> Theoretically, very high energy Xrays could disrupt crystalline structure
> within the chips, i.e. damage them permanently, but it requires energy and
> intensity much larger than that of an airport Xray machine. Whatever your
> problems are, it's not because of the Xray scan---did the TSA folk
> touch/handle the BBB? if so, they could have zapped it with static
> discharge, which is much deadlier than Xrays.
>
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Re: [beagleboard] push button on 7-inch touch screen to send some strings through the serial port.

[Eric Fort]

As a quick hack, the hard button(s) may be easier with less code, but you
are right, using the soft button approach with software based menus is much
more flexible.  With the touchscreen attached, the beagle starts running
it's display on the touchscreen and enables the touch interface as if it
were a mouse.  what you will likely want to do is when the system starts
have it start your button menu interface.  that program will be the main
thing the user sees and by pushing certain buttons in the menu you create
each button causes a software action or conversely a software routine can
bring up a window or button.

take a look at the following to get you started:

https://en.wikipedia.org/wiki/PyQt
https://wiki.python.org/moin/PyQt
https://en.wikipedia.org/wiki/PySide
https://en.wikipedia.org/wiki/PyGTK
https://en.wikipedia.org/wiki/WxPython
https://en.wikipedia.org/wiki/Tkinter

https://www.youtube.com/watch?v=53oeJPKRttY
https://www.youtube.com/watch?v=fqK8N48kPXs
https://www.youtube.com/watch?v=0vvb7Kv59qA
https://www.youtube.com/watch?v=8D_aEYiBU2c

within python you ought to be able to use the python serial library and one
of the above libraries/toolkits to get your buttons working.  i.e. push
software button, execute routine that spews string over serial, return to
menu.

Eric

On Fri, Jun 12, 2015 at 2:33 PM, Henry Yongfan Men 
wrote:

> Dear Eric, thanks for the reply! I’m planning to use soft button, not the
> hard button. Because in the end, I will end up adding many soft buttons
> with different names that can send different strings to the next device
> through serial port.
>
> Now I have very rookie questions:
> 1) I have connect the BBB to the computer, and I have opened the webpage
> of http://192.168.7.2, and can perform the scripts on the webpage text
> box; I have also opened Cloud9 IDE (http://192.168.7.2:3000/) and
> performed some programs. But I noticed that the Cloud9 access some path
> that the USB disk cannot find. My question is, how to get to the beagle# 
> status
> before entering any command to modify the configuration of the serial port?
> From the terminal of the computer? Or Cloud9? Or webpage test box?
> 2) It seems that when I connect the BBB to the back of the touch screen
> and turn it on, the board enters a system with touch control. So I suppose
> that I should run some GUI (some soft buttons) program from that system,
> instead of from computer via a USB cable. How to do that?
>
> Now I’m reading the book “Bad to the Bone: Crafting Electronic Systems
> with BeagleBone and BeagleBone Black”. It’s a very good book, but the
> progress seems to be too slow. I hope I could finish this by this weekend.
> But based on my background, there seems to be some barrier I should conquer
> first. So I really need some expert like you to instruct a little bit. Look
> forward to your reply. Thanks again.
>
> Henry
>
> 在 2015年6月12日星期五 UTC-4下午3:43:14，Eric写道：
>>
>> did you want to use soft buttons (buttons generated on the touchscreen as
>> needed in software) or hard buttons (buttons on the display that consist of
>> an actual hardware switch that causes a detectable contact closure) for
>> this?  For the soft buttons I'd look at Qt.  For the hard buttons, look at
>> how the beagle can edge detect an input and generate an interrupt based
>> upon that.  I'd be happy to look a bit further once you have an idea which
>> direction you want to go.
>>
>> Eric
>>
>> On Fri, Jun 12, 2015 at 12:32 PM, Henry Yongfan Men 
>> wrote:
>>
>>>
>>> Dear all,
>>>
>>> I'm a complete newbie in this community. As a postdoc, I'm responsible
>>> of building a off-computer control system. I decided to use BeagleBone as
>>> the central controller. But since I have other academic jobs, I wish I
>>> could finish the project quick and dirty. So maybe I need some specific
>>> guidance on it.
>>>
>>> Now for the first version of the system, my idea is just have two
>>> buttons appearing the touch screen and when I press either of the buttons,
>>> the BBB will send out a string through the serial port. I have another
>>> device waiting for the string command to trigger some control, so the rest
>>> is already ready.
>>>
>>> I think this is rather easy, isn't it? But I spent about a whole day
>>> today trying to figure out how to send the string out, and still cannot be
>>> successful. Not to mention the touchscreen part. I have experience in
>>> Matlab and LabVIEW programming, a little C experience, no Javascript or
>>> Python, and now I have a BBB, a 7-inch touch screen, a USB cable, and a 5V
>>> 3A power supply. I can make the se

Re: [beagleboard] push button on 7-inch touch screen to send some strings through the serial port.

[Eric Fort]

did you want to use soft buttons (buttons generated on the touchscreen as
needed in software) or hard buttons (buttons on the display that consist of
an actual hardware switch that causes a detectable contact closure) for
this?  For the soft buttons I'd look at Qt.  For the hard buttons, look at
how the beagle can edge detect an input and generate an interrupt based
upon that.  I'd be happy to look a bit further once you have an idea which
direction you want to go.

Eric

On Fri, Jun 12, 2015 at 12:32 PM, Henry Yongfan Men 
wrote:

>
> Dear all,
>
> I'm a complete newbie in this community. As a postdoc, I'm responsible of
> building a off-computer control system. I decided to use BeagleBone as the
> central controller. But since I have other academic jobs, I wish I could
> finish the project quick and dirty. So maybe I need some specific guidance
> on it.
>
> Now for the first version of the system, my idea is just have two buttons
> appearing the touch screen and when I press either of the buttons, the BBB
> will send out a string through the serial port. I have another device
> waiting for the string command to trigger some control, so the rest is
> already ready.
>
> I think this is rather easy, isn't it? But I spent about a whole day today
> trying to figure out how to send the string out, and still cannot be
> successful. Not to mention the touchscreen part. I have experience in
> Matlab and LabVIEW programming, a little C experience, no Javascript or
> Python, and now I have a BBB, a 7-inch touch screen, a USB cable, and a 5V
> 3A power supply. I can make the serial port with connectors to the board
> with no difficulty. I have tried to boot the board with the 5 power supply
> and the LCD screen hooked up, and I could see the operating system. So
> could anyone tell me how to step into this field with a relatively quicker
> method? Thanks!
>
> Sincerely,
> Henry
>
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Re: [beagleboard] Re: Why is usb0 configured?

[Eric Schumann]

I had to clean /etc/network/interfaces and /opt/scripts/boot/am335x_evm.sh
of all references to the USB0 items.

The udhcpd.conf file tells your beagle bone how to behave as a DHCP server
(which it had to do for USB since your PC would not be handing out DHCP
licenses to a device connected by USB).

When you modified the conf file, it started handing out DHCP leases on the
interface you put in (probably eth0, which is why your beagle bone was
giving out ip address to devices on your network). If you put the interface
back to usb0 in /etc/udhcpd.conf, it will stop doing that, and will have no
adverse consequences.

At some point you might want to disable udhcpd altogether as you will not
need it unless you intend the beagle bone be a DHCP server


-=Eric Schumann



my /etc/network/interfaces



# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet dhcp
# Example to keep MAC address between reboots
#hwaddress ether 7c:66:9d:4e:5e:DD

# The secondary network interface
#auto eth1
#iface eth1 inet dhcp

# WiFi Example
#auto wlan0
#iface wlan0 inet dhcp
#wpa-ssid "essid"
#wpa-psk  "password"

# Ethernet/RNDIS gadget (g_ether)
# ... or on host side, usbnet and random hwaddr
# Note on some boards, usb0 is automaticly setup with an init script
#iface usb0 inet static
#address 192.168.7.2
#netmask 255.255.255.0
#network 192.168.7.0
#gateway 192.168.7.1



and my /opt/scripts/boot/am335x_evm.sh:




#!/bin/sh -e
#
# Copyright (c) 2013-2014 Robert Nelson 
#
# Permission is hereby granted, free of charge, to any person obtaining a
copy
# of this software and associated documentation files (the "Software"), to
deal
# in the Software without restriction, including without limitation the
rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

#Based off:
#
https://github.com/beagleboard/meta-beagleboard/blob/master/meta-beagleboard-extras/recipes-support/usb-gadget/gadget-init/g-ether-load.sh

eeprom="/sys/bus/i2c/devices/0-0050/eeprom"

#Flash BeagleBone Black's eeprom:
if [ -f /boot/uboot/flash-eMMC.txt ] ; then
eeprom_location=$(ls
/sys/devices/ocp.*/44e0b000.i2c/i2c-0/0-0050/eeprom 2> /dev/null)
eeprom_header=$(hexdump -e '8/1 "%c"' ${eeprom} -s 5 -n 3)
if [ "x${eeprom_header}" = "x335" ] ; then
echo "Valid EEPROM header found"
else
echo "Invalid EEPROM header detected"
if [ -f /opt/scripts/device/bone/bbb-eeprom.dump ] ; then
if [ ! "x${eeprom_location}" = "x" ] ; then
echo "Adding header to EEPROM"
dd
if=/opt/scripts/device/bone/bbb-eeprom.dump of=${eeprom_location}
fi
fi
fi
fi

SERIAL_NUMBER=$(hexdump -e '8/1 "%c"' ${eeprom} -s 14 -n 2)-$(hexdump -e
'8/1 "%c"' ${eeprom} -s 16 -n 12)
ISBLACK=$(hexdump -e '8/1 "%c"' ${eeprom} -s 8 -n 4)

BLACK=""
if [ "x${ISBLACK}" = "xBBBK" ] || [ "x${ISBLACK}" = "xBNLT" ] ; then
BLACK="Black"
fi

mac_address="/proc/device-tree/ocp/ethernet@4a10/slave@4a100200
/mac-address"
if [ -f ${mac_address} ] ; then
cpsw_0_mac=$(hexdump -v -e '1/1 "%02X" ":"' ${mac_address} | sed
's/.$//')
fi

mac_address="/proc/device-tree/ocp/ethernet@4a10/slave@4a100300
/mac-address"
if [ -f ${mac_address} ] ; then
cpsw_1_mac=$(hexdump -v -e '1/1 "%02X" ":"' ${mac_address} | sed
's/.$//')
fi

unset boot_partition
boot_partition=$(LC_ALL=C lsblk -l | grep "/boot/uboot" | awk '{print $1}')
if [ "x${boot_partition}" = "x" ] ; then
gadget_partition="/dev/mmcbl

Re: [beagleboard] Cape Template License

[Eric Fort]

What kind of cape did you want to build?  unless you are going to simply
replicate the protocape you reference it's likely easier to simply start
with the adafruit and/or sparkfun eagle library and simple use the parts
you need, one of which *IS* the cape itself, already pre-layed-out and done
for you.  the licences for those libraries are known to be free and clear
of restrictions on use and production.

Eric

For reference:

https://learn.sparkfun.com/tutorials/how-to-install-and-setup-eagle/using-the-sparkfun-libraries

https://github.com/adafruit/Adafruit-Eagle-Library



On Sat, May 23, 2015 at 6:08 PM, Istvan Burbank  wrote:

> Hello,
> I am looking to design, manufacture, and sell a Cape. I am looking for a
> template board (Eagle preferably) that I can modify for this purpose. There
> are files hosted on elinux
> <http://elinux.org/CircuitCo:Generic_Proto_Cape#Documentations> which
> would do the trick, but I am unsure what license they are under; perhaps
> the Creative Commons Attribution-ShareAlike 3.0 Unported License noted on
> the bottom of the page? The README in the linked zip file doesn't mention a
> license.
>
> Thanks,
> Istvan.
>
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Re: [beagleboard] Interfacing a 7400 series with the BeagleBone Black

[Eric Fort]

first off, to properly answer your question we need to start by referencing
the datasheet for the part you wish to use found here:
http://www.ti.com/lit/ds/symlink/sn74s02.pdf

something missed by many is that 3.3v OUTPUTS on a device such as the
beagle will drive standard 5v TTL logic just fine!  just make sure to limit
your fan out (number of logic loads) appropriately.  The reason for this
becomes clear if one actually reads the datasheet referenced above for the
part you wish to use.  If you look at the 74LS02 VIHmin (the minimum
voltage which the input sees as high) it's listed as 2v.  since 3v3 > 2v0
it works fine.  the problem you have is that the output of the 74LS02
swings from 0-5v so when the output of the 74LS02 goes high it will measure
5v.  since 5v > 3v3 it will cook a 3v3 INPUT.  So depending what you want
to do you may or may not need voltage translation andin most cases (i2c
buses being the major place where you find an exception and do need
bidirectional) they need only be unidirectional and one may use simpler
circuitry such as a transistor or resistance ladder/voltage divider. So
I'll end by posing a question.  What doyou want to accomplish with this and
can you post a basic schematic for review for us tolookat and
constructively comment on?

Eric

On Tue, Mar 10, 2015 at 10:50 AM,  wrote:

> Hi,
>
> I come from the world of sotware engineering and I am a newcomer (nearly)
> to the world of electronic. I would like to know if it was possible to
> interface a 74LS02 to the BeagleBone Black.
>
> I plan to connect Vcc and Vss of the 74LS02 to the 5V Vdd output and Gnd
> of the Beagle and use the GPIO pins to command the logic inputs. My problem
> is that I don't know if I can plug the 74LS02 without components such as
> resistors, in order to limit the current flowing through components. I
> don't want to damage the board.
>
> The result of all the logic operations should be gathered by some GPIO
> pins configured as inputs.
>
> Is it possible to proceed that way ?
>
> Thanks in advance for your answers
>
> --
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Re: [beagleboard] Re: Automotive Cape

[eric . johnston02]

Any updates for the Cape?  I'm curious in this as well.  I've got all the 
componets in piece mail but its proving more difficult to combine the code and 
GUI...albeit that I'm an extreme novice and my skills in programming are of 
course, rudementary.  

I have already soldered in an RS232 cable to the 16pin OBD connector and using 
an Arduino with CAN shield to set an automatic environment while the beaglebone 
boots.  Once the BBB boot sequence is complete, the Arduino then reads inputs 
from the beaglebone and adjusts according to the user inputs.  The GUI is of 
course proving to be very challenging for me in how I am looking to present the 
information from the vehicle CAN buses and GPRS, GPS, accelerometer and gyro.  
My intent is to match the factor skins and coloring as best I can.  

It sounds awesome in theory and concept...getting the screen and functions to 
play out what my mind is seeing may be two different things

What's the status?  

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Re: [beagleboard] Thinking of Buying

[Eric Fort]

what is it that you ultimately want to do or accomplish?  while the beagle
bone (black) has IO and capes that will accomplish much of what you list
and could likely do everything on the list with appropriate sensors and
circuitry interfaced it may or may not be the appropriate platform for your
task.  The beagle bone has the advantage of having 2 programmable real time
units in addition to the arm processor and it runs a full linux operating
system thus putting it in the class of a general purpose computer.  often
tasks such as PID, motor control, and PWM can be simpler to deploy and
implement, especially when precise timing is a concern, on  a
microcontroller platform such as arduino.  which you choose, really depends
upon what you wish to accomplish.

Eric.

On Fri, Jan 9, 2015 at 6:57 AM, oakbarn  wrote:

> I am thinking of getting a BeagleBone Black and am not sure about the
> Hardware.
>
> I have written in VBA and understand scripting so I think I can get it to
> do what I want it to do (with help).
>
> I am interested in the Hardware if it will support the following.
> And how many "capes" would I need.   How many would a "cape" support.
>
>
>
> PID
> Motor Control
> PWM control
> 7 Digits Remote Displays (I2C?)
> RTD Temperature Probes
> 4-20MA sensor
> THermoristor Temperature
>
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[beagleboard] seeking recommendation for SD card imaging hardware

[Eric Fort]

After recently upgrading my computer, I moved my desktop from windows to
linux and no longer havea built in SD card slot.  I'm thus seeking
recommendations for an inexpensive USB 3 adapter known to work well with
debian jessie AMD64 for imaging SD cards for Beagle(bone) and Rpi.  What
are you using that works well for you and can be had reasonably cheaply
from a US supplier?

Thanks,

Eric

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Re: [beagleboard] DDR3L 4gb chip installed, but only 512mb used. Why?

[Eric Fort]

this was covered in a really recent thread here.  it's the difference
between big B and little b which people are often sloppy about.  b
represents bits, B represents bytes.  since a Byte is by definition 8 bits,
there is an 8:1 difference, thus 4Gb = 512MB.

On Fri, Dec 12, 2014 at 9:33 AM,  wrote:
>
>
> When I look up the ram chip used with the BBB I see that its a 4gb chip
> instead of the expected 512meg.
> Why is a 4gb chip used?
> Is the remaining space used for partitioning the O/S or something?
>
> If I wanted to replace the chip with something similar what problems
> should I expect?
>
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Re: [beagleboard] Issue when building kernel for Beagleboard Black

[Eric L]

Thank you very much, it works fine now.
I think, it might be usefull to indicate this in your web page.

Is it also possible to build the initrd during the building process?

Regards

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Re: [beagleboard] Issue when building kernel for Beagleboard Black

[Eric L]

Hi Robert,

In attachment the console logs.

The board stops booting at:
 Waiting for root device /dev/mmcblk1p2...

Thank for your help.
--
Eric

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console.log
Description: Binary data

[beagleboard] Issue when building kernel for Beagleboard Black

[Eric L]

Hi,

I'm currently trying to build a customized kernel for the Beagleboard Black.

I follow instructions from Robert Nelson.
https://eewiki.net/display/linuxonarm/BeagleBone+Black

To build the kernel, I use Debian and I did:

git clone https://github.com/RobertCNelson/bb-kernel.git bb-kernel-3.8
cd bb-kernel/
git checkout origin/am33x-v3.18 -b tmp
./build_kernel.sh

So, it is supposed to build a default kernel. The KERNEL/.config file is 
very similar to the config-3.8.13-bone63 from the Debian 7.6 bbb image.

To install the kernel on my bbb installed with a debian image I do the 
following things:
- I copy the deploy folder in my bbb.
- Install the kernel with this script.

export kernel_version=3.8.13-bone67.2
cp ${kernel_version}.zImage /boot/vmlinuz-${kernel_version}
mkdir -p /boot/dtbs/${kernel_version}/
tar xfv ${kernel_version}-dtbs.tar.gz -C /boot/dtbs/${kernel_version}/
tar xfv ${kernel_version}-modules.tar.gz -C /

- Change uname_r from /boot/uEnv.txt to 3.8.13-bone67.2

After that, the bbb does not boot anymore.

The logs from the console are:

> U-Boot 2014.07-00016-g329fca9 (Jul 28 2014 - 12:35:02), Build: 
>> jenkins-github_Bootloader-Builder-375
>
>
>> I2C:   ready
>
> DRAM:  512 MiB
>
> NAND:  0 MiB
>
> MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
>
> *** Warning - readenv() failed, using default environment
>
>
>> Net:not set. Validating first E-fuse MAC
>
> cpsw, usb_ether
>
> Hit any key to stop autoboot:  1 ... 0 
>
> gpio: pin 53 (gpio 53) value is 1
>
> Card did not respond to voltage select!
>
> Card did not respond to voltage select!
>
> gpio: pin 56 (gpio 56) value is 0
>
> gpio: pin 55 (gpio 55) value is 0
>
> gpio: pin 54 (gpio 54) value is 0
>
> switch to partitions #0, OK
>
> mmc1(part 0) is current device
>
> gpio: pin 54 (gpio 54) value is 1
>
> SD/MMC found on device 1
>
> Checking for: /uEnv.txt ...
>
> Checking for: /boot.scr ...
>
> Checking for: /boot/boot.scr ...
>
> Checking for: /boot/uEnv.txt ...
>
> gpio: pin 55 (gpio 55) value is 1
>
> 361 bytes read in 21 ms (16.6 KiB/s)
>
> Loaded environment from /boot/uEnv.txt
>
> Checking if uname_r is set in /boot/uEnv.txt...
>
> gpio: pin 56 (gpio 56) value is 1
>
> Running uname_boot ...
>
> loading /boot/vmlinuz-3.8.13-bone67.2 ...
>
> 5506944 bytes read in 371 ms (14.2 MiB/s)
>
> loading /boot/dtbs/3.8.13-bone67.2/am335x-boneblack.dtb ...
>
> 26098 bytes read in 39 ms (653.3 KiB/s)
>
> Kernel image @ 0x8200 [ 0x00 - 0x540780 ]
>
> ## Flattened Device Tree blob at 8800
>
>Booting using the fdt blob at 0x8800
>
>Loading Device Tree to 8fff6000, end 85f1 ... OK
>
>
>> Starting kernel ...
>
>
>> Uncompressing Linux... done, booting the kernel.
>
> [0.177953] omap2_mbox_probe: platform not supported
>
> [0.334311] tps65217-bl tps65217-bl: no platform data provided
>
> [0.397815] bone-capemgr bone_capemgr.9: slot #0: No cape found
>
> [0.434923] bone-capemgr bone_capemgr.9: slot #1: No cape found
>
> [0.472030] bone-capemgr bone_capemgr.9: slot #2: No cape found
>
> [0.509141] bone-capemgr bone_capemgr.9: slot #3: No cape found
>
> [0.524682] bone-capemgr bone_capemgr.9: slot #6: BB-BONELT-HDMIN 
>> conflict P8.45 (#5:BB-BONELT-HDMI)
>
> [0.534314] bone-capemgr bone_capemgr.9: slot #6: Failed verification
>
> [0.541058] bone-capemgr bone_capemgr.9: loader: failed to load slot-6 
>> BB-BONELT-HDMIN:00A0 (prio 2)
>
> [0.557484] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' 
>> failed
>
> [0.620740] pinctrl-single 44e10800.pinmux: pin 44e10854 already 
>> requested by 44e10800.pinmux; cannot claim for gpio-leds.8
>
> [0.632437] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status 
>> -22
>
> [0.639716] pinctrl-single 44e10800.pinmux: could not request pin 21 on 
>> device pinctrl-single
>
>
Can you tell me please, what I did wrong?

Thank your for your help.

--
Eric





  


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Re: [beagleboard] Re: Starting Up Programs Automatically With LXDE

[Eric Apperley]

No, I don't believe that it is the hardware either.  I think that its
likely to be either:
- the implementation of debian/LXDE on the ARM platform, OR
- some difference in implementation for the the JAVA SE Embedded jre
product compared with the standard JAVA SE jre product

As another test, we replicated the shell script and .desktop file to a
standard PC running Lubuntu 12.04 LXDE.  We installed Oracle JAVA SE
1.8.0_25 and the same version of the jOrgan application as used on the ARM
platform.  The autostart mechanism and files were identical to what has
been set up on the Beaglebone.  The autostart process works flawlessly on
the PC.  The onnly difference there is that we were using JAVA SE 1.8.0 on
the PC vs JAVA SE *Embedded* 1.8.0 on the Beaglebone, but I'm stuggling to
see that the embedded version of JAVA would create that problem.

The question now is how to isolate this problem further.  Trying to
redirect the console output for the JAVA command in the shell script file
to a text file does not work.

I don't see how it can be a permissions issue - the scrpt file when invoked
manually as the user runs just fine and starts the application.

Are there some log files I can review that might help point to the cause??


*Just to recap*:

- the autostart process (via the .desktop file located in
/etc/xdg/autostart) does execute the shell script file

- if a standard application is added to the shell script file in the user's
home directory the application is started as intended

- if a standard command (e.g. ls -l > list.txt) is added ot the shell
script file it too is run correctly

- this command, when added to the shell script in the user's home directory
does not successfully execute on the Beaglebone (it does on a PC running
LUbuntu):

java -jar /home/organ/jOrgan-3_20/jorgan.jar



Eric Apperley
E-Mail:   eapper...@gmail.com
Mobile:   ++64 21 060 4202
Phone:   ++64 (3) 325 5848

On 18 November 2014 14:22, William Hermans  wrote:

> I'd start by checking file permissions, and running processes on both
> systems. After that, I'm not sure what I'd check, but would depend on what
> I found after doing multiple google searches.
>
> There has to be something that is different, obviously. However, I'm
> nearly 100% positive that it has nothing to do with the hardware its self.
> I say nearly, because like anyone else. I can not know everything.
>
> On Mon, Nov 17, 2014 at 5:07 PM, Nick Apperley 
> wrote:
>
>> Automatically starting the shell script when logging into LXDE works fine
>> in a Lubuntu 12.04 VM. For some strange reason the same thing can't be done
>> on the BBB. No error messages appear anywhere, a real mystery. There may be
>> an issue with Java since some of the other shell scripts (not using Java)
>> start up without any issues on the BBB.
>>
>>
>> On Monday, 17 November 2014 12:20:07 UTC+13, eapp...@gmail.com wrote:
>>>
>>> Further detail for Nick's post:
>>>
>>> We're using the debian 7 armhf lxde sdcard distribution with kernel
>>> 3.8.13-bone67 on the Beaglebone Black.
>>>
>>> The objective is to automatically start an embedded java program using a
>>> shell script when the user logs on.
>>>
>>> 1. The script executes properly from the user's home directory when
>>> executed in the normal fashion from a terminal, i.e.
>>>./start.sh
>>>
>>> 2. The content of the shell script is straightforward:
>>>
>>> #!/bin/sh
>>> # Start jOrgan and autoload the disposition.
>>> java -jar ~/jOrgan-3_20/jorgan.jar
>>>
>>> 3. To achieve the autostart at login of a specific user we have followed
>>> the standard LXDE application startup scenario:
>>> - log in as the user
>>> - edit the autostart file located in~/.config/lxsession/LXDE
>>> - add an entry (line) of the form @
>>> - save the file and log out
>>> - log in as the user again
>>>
>>> 4. To test (3) the following lines wre appended to the autostart file.
>>> At login both the leafpad and lxterminal applications were auto-started as
>>> intended.
>>>
>>> @leafpad
>>> @lxterminal
>>>
>>> 5) To test running a command from the command line the following line
>>> was appended to the autostart file.  This appeared to do nothing at log
>>> in other than start the Leafpad application.  The Lxterminal application
>>> was not visible.
>>>
>>>
>>> So, the question is, why does this not work?   How do we get a
>>> command-line shell script to execute at login?
>>>
>>>
>>> On Sunday, 16 November 2014 2

Re: [beagleboard] Re: FS: beagle battery cape

[Eric Fort]

yes, I just packed it in a box for you.  send your address and I'll send a
paypal invoice and get it shipped upon payment.

Eric

On Mon, Nov 17, 2014 at 1:43 PM, 'Scott W' via BeagleBoard <
beagleboard@googlegroups.com> wrote:

> Eric,
>
> Do you still have the battery cape for sale?  I'm interested in purchasing
> it.
>
> -- Scott
>
>
> On Saturday, October 25, 2014 7:06:32 PM UTC-6, Eric wrote:
>>
>> Wanting to get other hardware and sell off my beagle bone battery cape.
>>  they regularly sell for $48.95,  I'd like to find it a new home for $36.25
>> (via Paypal preferred) or make me an offer.  so who's interested?  who
>> want's / needs a battery cape for their next project?  here's what I'm
>> offering:
>>
>> http://www.digikey.com/product-search/en?x=0&y=0&;
>> lang=en&site=us&keywords=battery+cape
>>
>> Eric
>>
>  --
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[beagleboard] FS: beagle battery cape

[Eric Fort]

Wanting to get other hardware and sell off my beagle bone battery cape.
 they regularly sell for $48.95,  I'd like to find it a new home for $36.25
(via Paypal preferred) or make me an offer.  so who's interested?  who
want's / needs a battery cape for their next project?  here's what I'm
offering:

http://www.digikey.com/product-search/en?x=0&y=0&lang=en&site=us&keywords=battery+cape

Eric

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[beagleboard] difference between available beaglebone display capes

[Eric Fort]

what is the difference between

http://www.4dsystems.com.au/product/4DCAPE_70T/
and
http://boardzoo.com/index.php/bone-lcd7.html

or

http://www.4dsystems.com.au/product/4DCAPE_43/
and
http://boardzoo.com/index.php/bone-lcd4.html

are both well supported under the current debian install?  how are these
boards different?


Thanks,

Eric

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[beagleboard] trouble updating ubuntu on beagle

[Eric Fort]

In running updates on my beagle black ubuntu I had the following errors:

update-initramfs: Generating /boot/initrd.img-3.15.3-armv7-lpae-x5
WARNING: missing /lib/modules/3.15.3-armv7-lpae-x5
Device driver support needs thus be built-in linux image!
depmod: ERROR: could not open directory
/lib/modules/3.15.3-armv7-lpae-x5: No such file or directory
depmod: FATAL: could not search modules: No such file or directory
depmod: WARNING: could not open
/tmp/mkinitramfs_ddBceU/lib/modules/3.15.3-armv7-lpae-x5/modules.order:
No such file or directory
depmod: WARNING: could not open
/tmp/mkinitramfs_ddBceU/lib/modules/3.15.3-armv7-lpae-x5/modules.builtin:
No such file or directory
Errors were encountered while processing:
 cpp-doc
 gcc-doc
E: Sub-process /usr/bin/dpkg returned an error code (1)

looks like some issues with kernel modules or some such and something
about device drivers, then couldn't process some doc updates or
somesuch.What is all this..   and how can I go about
fixing it such that updates are successful?

Thanks,

Eric

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Re: [beagleboard] Re: BBB LCD Interface

[Eric Fort]

by a 20x4 lcd, you mean a 20x4 character lcd, correct?  generally
these are a simple serial or 8/4 bit parallel interface.  got a data
sheet to share (preferably a link)?

On Fri, Sep 19, 2014 at 9:46 PM, anupsingh chandel
 wrote:
> Dear chitra,
>
> I am a novice with begal bone black. I want to connect LCD with the BBB, but
> as the P8 pins are already connected with HDMI, how to connect LCD.
>
> I want to connect 20x4 LCD.
>
> Please help.
>
>
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[beagleboard] Re: Welcome the Fall 2014 Beagle Class to the group

[Eric Taylor]

Hey, Looking forward to class this quarter.

On Friday, September 5, 2014 11:13:58 AM UTC-4, Mark A. Yoder wrote:
>
> The purpose of this posting is to announce that I'm once again teaching 
> an Embedded Linux class based on the BeagleBone Black [1].  I'm 
> teaching as open-source as I can and have have posted many of course 
> materials on eLinux.org [2] and github[3].
>
> I'm always open to ideas on what topics to include in the class and 
> suggestions for interesting course projects.  For example we are starting
> BoneScript today and hope to be writing simple kernel module 5 weeks from 
> now.
>
> Class, please respond to this posting.  Others, please welcome my class.
>
> --Mark 
>
> --Prof. Mark A. Yoder 
>   Rose-Hulman Institute of Technology [4] 
>
> [1] http://elinux.org/Embedded_Linux,_Rose-Hulman 
> [2] http://elinux.org/index.php?title=Category:ECE597 
> [3] https://github.com/MarkAYoder/BeagleBoard-exercises 
> [4]  http://www.rose-hulman.edu 
>

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Re: [beagleboard] BBB as EtherCAT slave?

[eric . boutet]

Hi,

I know that is an old post. I have a BBB with A6A version with AM3359. In 
this web page 
,
 
I can see that this model support Ethercat, but you mentioned that the 
AM3359 was a special verison. Is it compatible with EtherCAT ?

Thanks.

On Sunday, February 23, 2014 6:03:48 PM UTC-5, Gerald wrote:
>
> We have moved to the AM3358. It has no Ethercat. The version of the AM3359 
> we used was a special binned version. There are no Am3359 that support 
> 1GHz. 
>
> The Tre uses the AM3358. Because there are no Am3359 that run at 1GHz.
>
> Gerald
>
>
>
> On Sun, Feb 23, 2014 at 3:17 PM, GreedyGoblin  > wrote:
>
>>
>> Maybe can we hope for the next board revision? Ora maybe for ArduinoTRE?
>>  
>>
>>> The pins for Ethercat are not supported on the BBB. Also. The Ethercat 
>>> is removed in the AM3358 processor, the one used on the latest revision.
>>>
>>> Gerald
>>>
>>  -- 
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>

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[beagleboard] 2014-08-19 LXDE flasher image: broken web site

[Eric Lee]

Just FYI, I flashed the 2014-08-19 LXDE image to my BBB Rev C and the 
Getting Started web site on the BBB appears to be broken.  Browsing 
to http://192.168.7.2 redirects me 
to http://192.168.7.2/%7B%7Bsite.baseurl%7D%7D/Support/bone101/, so 
obviously there's a token that's not getting replaced for some reason.  I 
don't know enough about the system to diagnose it any further than that yet.

Is there a better place to report issues with these images?

Eric

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[beagleboard] BBConsole - Wireless console for BeagleBone Black

[Eric Palmer]

 

You all may be interested in  this BBConsole - Wireless console for 
BeagleBone Black

http://www.indiegogo.com/projects/881094/emal/8470974

These guys created a similar one for the Pi and I got to play with an early 
model. I know this team (we judge robotic competition together and our kids 
go to the same IT program in High School). 


The Pi model is 
here 
https://www.kickstarter.com/projects/1842571016/piconsole-anywhere-console-for-raspberry-pi/

I like the design of the BBB one better because it sites between the pins.


Eric Palmer

Richmond VA

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Re: [beagleboard] debian: sgx: v3.14.x

[Eric Fort]

Thanks john...

so in other words using sgx vs not using it means faster rendering and
fancier graphics and now that can be done on the beagle running the
3.14 branch.

Eric

On Fri, Aug 1, 2014 at 1:45 PM, John Syn  wrote:
>
> On 8/1/14, 1:35 PM, "Eric Fort"  wrote:
>
>>in a nutshell what will this help beagle do better?
> http://en.wikipedia.org/wiki/PowerVR
>
> Regards,
> John
>>
>>Eric
>>
>>On Fri, Aug 1, 2014 at 1:08 PM, Robert Nelson 
>>wrote:
>>> Thanks to Darren at TI, we now have v3.14.x working with SGX.
>>>
>>> Just pushed out a build..
>>>
>>> So shortly you can use:
>>>
>>> sudo ./update_kernel.sh --kernel v3.14.15-bone6
>>>
>>> or
>>>
>>> sudo apt-get update ; sudo apt-get install linux-image-3.14.15-bone6
>>>
>>> or just build it directly from the am33x-v3.14 branch of bb-kernel
>>>
>>> http://elinux.org/BeagleBoardDebian#SGX_Drivers
>>>
>>> Regards,
>>>
>>> --
>>> Robert Nelson
>>> http://www.rcn-ee.com/
>>>
>>> --
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Re: [beagleboard] debian: sgx: v3.14.x

[Eric Fort]

in a nutshell what will this help beagle do better?

Eric

On Fri, Aug 1, 2014 at 1:08 PM, Robert Nelson  wrote:
> Thanks to Darren at TI, we now have v3.14.x working with SGX.
>
> Just pushed out a build..
>
> So shortly you can use:
>
> sudo ./update_kernel.sh --kernel v3.14.15-bone6
>
> or
>
> sudo apt-get update ; sudo apt-get install linux-image-3.14.15-bone6
>
> or just build it directly from the am33x-v3.14 branch of bb-kernel
>
> http://elinux.org/BeagleBoardDebian#SGX_Drivers
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
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Re: [beagleboard] long term BBB based art installation

[Eric Fort]

have you considered environmental factors where it will be installed?
what extremes of temperature and humidity will it see?  also make sure
you're running from onboard eMMC as doing so eliminates yet another
connector issue.  basicly keep the board cool and dry and it ought run
for a good long time.  also let us know where this is going so we can
come see your great art!

Eric

On Mon, Jul 28, 2014 at 2:28 PM, Matt Pinner  wrote:
> tldr: can i run a BBB for three years?
>
> I'm about to fly a BBB (w the latest debian) high into the rafters at a
> space in Denver.
>
> It will control 1440 leds over SPI from pixel data sent over UDP via OPC.
>
> This is all very exciting for me and things have been running fairly
> smoothly and the community support and blogs have been enormously helpful.
>
> Now i'm kind of freaking out bc this thing should ideally run as stably as
> any light fixture and i'm not sure a good way to really test that kind of
> thing.
>
> the sub one-minute boot up time seems acceptible enough, so the client can
> always reboot it, but then what does that do the filesystem?
>
> i've started looking into logrotate to keep the disk cleared, but there is
> still the question how many read/write cycles will the eMMC accept before
> drama happens?
>
> I plan to have a private network running so i should be able to login to the
> BBB for some kind of maintenance and troubleshooting. do i run a long
> (100ft) serial cable? and usb cable as well?
>
> im tempted to put it online so i can check from afar, but i feel that
> invites all kinds of new room for disaster and abuse.
>
> i realize these are more debian/sys-admin/collo questions than BBB specific,
> but i thought there might be some specific examples of people doing this
> type of thing or suggestions from this group for what to check and lookout
> for.
>
> thanks for your consideration, questions, and suggestions!
>
> -matt
>
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Re: [beagleboard] debian testing install (jessie)

[Eric Fort]

ok,

where can I get it and how do I go from what I get to something that
can be placed onto an sd card (then flashed)?  I found the following
browsing around the usual site for dev images:

https://rcn-ee.net/deb/rootfs/jessie/debian-jessie-console-armhf-2014-07-06.tar.xz
https://rcn-ee.net/deb/rootfs/trusty/ubuntu-14.04-console-armhf-2014-07-06.tar.xz
https://rcn-ee.net/deb/rootfs/utopic/ubuntu-utopic-console-armhf-2014-07-06.tar.xz

 but how do I go from what they contain to a usable, possibly flashable SD card?

Thanks,

Eric

On Sat, Jul 26, 2014 at 6:47 AM, Robert Nelson  wrote:
> On Fri, Jul 25, 2014 at 11:56 PM, Eric Fort  wrote:
>> Is there a netinstall version of jessie available for beagle bone black?
>> I'm having trouble with sorely needed packages being unavailable in wheezy.
>
> Jessie is enabled in the netinstall: "--distro jessie"
>
> It's using a d-i ramdisk image from 20140316 off debian server's.
> (still the latest they have).
>
> Otherwise it's pretty bug free.
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
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[beagleboard] debian testing install (jessie)

[Eric Fort]

Is there a netinstall version of jessie available for beagle bone black?
I'm having trouble with sorely needed packages being unavailable in wheezy.

Thanks,

Eric

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Re: [beagleboard] Join BBBdrone cape project

[Eric Fort]

what sensors do you intend to include?  I'd vote for a cape with the
following:

invensense mpu-9150
bosch BMA180
Skytraq Venus638 GPS

one more differential pressure sensor tbd - for pitot-static airspeed
measurement and stall sensitivity.

note I think there's a place for building a simple cape filled with sensors
specific to autonomous vehicles some of which that may fly.  I see software
as a seperate issue.

Eric



On Fri, Jul 25, 2014 at 6:19 AM, embeddedcomputer.nl  wrote:

> Joining the open source project BBBdrone?  Let us know!
>
> We are currently looking for people who wants to start/join the OpenSource
>  BBBdrone project.
>
> Our aim will be a affordable BBB cape that together with a BBB and 3D
> printed frame can be controlled by a Android/Apple phone/tablet.
>
> Funding by Kickstarter or indiegogo
>
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Re: [beagleboard] Maximum SD card size for BBB

[Eric Fort]

yaoshi,

thanks for the link, that pretty well lays it out and gives what I was
looking for as to what and why.

Eric


On Wed, Jul 23, 2014 at 5:33 AM, liyaoshi  wrote:

> Its not about software , Its about how hardware implement a stack / spec.
>
> You can read this first , to understand how a sdxc stack runs failed on a
> sdhc host
>
> https://www.sdcard.org/downloads/pls/simplified_specs/part1_410.pdf
>
>
> 2014-07-23 12:25 GMT+08:00 Eric Fort :
>
> so that sounds like a software issue not a hardware issue.  When I refer
>> to hardware I really mean the electrical signaling on the interface to the
>> host.  only thing I can think of there is some subsystem in an soc ends up
>> being too smart for it's own good in trying to handle those commands such
>> that the host never actually sees the commands being sent/received on the
>> interface.  cmd length sounds like a linux kernel driver issue.
>>
>> Eric
>>
>>
>> On Tue, Jul 22, 2014 at 9:14 PM, liyaoshi  wrote:
>>
>>> Its about sdhc cmd format ，some sdhc cmd/resp will get different length
>>> from sdxc
>>>
>>>
>>> 2014-07-23 11:03 GMT+08:00 Eric Fort :
>>>
>>> so one is completely unable to reformat an SDXC card with another
>>>> filesystem type such as ext3?  Is it simply a filesystem issue or are there
>>>> hardware differences to be overcome?
>>>>
>>>> Eric
>>>>
>>>>
>>>> On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson >>> > wrote:
>>>>
>>>>> On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort 
>>>>> wrote:
>>>>> > so can someone link to something definitive stating that for the
>>>>> beagle bone
>>>>> > (black) 32GB SDHC is the biggest card supported (assuming this is
>>>>> correct)?
>>>>>
>>>>> From:
>>>>> http://en.wikipedia.org/wiki/Secure_Digital#SDXC
>>>>>
>>>>> The Secure Digital eXtended Capacity (SDXC) format, announced in
>>>>> January 2009 and defined in Version 3.01 of the SD specification,
>>>>> supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for
>>>>> SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT
>>>>> file system as a mandatory feature.
>>>>>
>>>>> aka:
>>>>> microSDHC 32GB is your limit..
>>>>>
>>>>> Regards,
>>>>>
>>>>> --
>>>>> Robert Nelson
>>>>> http://www.rcn-ee.com/
>>>>>
>>>>> --
>>>>> For more options, visit http://beagleboard.org/discuss
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>>>>>
>>>>
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Re: [beagleboard] Maximum SD card size for BBB

[Eric Fort]

Robert,

Yes, I suppose you have a point, but this does sound like another good use
for one of the PRUs.

Eric


On Wed, Jul 23, 2014 at 4:53 AM, Robert Nelson 
wrote:

> On Tue, Jul 22, 2014 at 11:25 PM, Eric Fort  wrote:
> > so that sounds like a software issue not a hardware issue.  When I refer
> to
> > hardware I really mean the electrical signaling on the interface to the
> > host.  only thing I can think of there is some subsystem in an soc ends
> up
> > being too smart for it's own good in trying to handle those commands such
> > that the host never actually sees the commands being sent/received on the
> > interface.  cmd length sounds like a linux kernel driver issue.
>
> You realize if that soc subsystem wasn't "too smart" you'd have to use
> the Cortex A8 to manually batch every mmc cmd/data access.  I'm sorry,
> i'd rather use the cpu cycles for something useful.
>
> If you need more then 32GB get a usb flash or usb sata drive. It's way
> cheaper then any most microSDXC devices.
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
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Re: [beagleboard] Maximum SD card size for BBB

[Eric Fort]

so that sounds like a software issue not a hardware issue.  When I refer to
hardware I really mean the electrical signaling on the interface to the
host.  only thing I can think of there is some subsystem in an soc ends up
being too smart for it's own good in trying to handle those commands such
that the host never actually sees the commands being sent/received on the
interface.  cmd length sounds like a linux kernel driver issue.

Eric


On Tue, Jul 22, 2014 at 9:14 PM, liyaoshi  wrote:

> Its about sdhc cmd format ，some sdhc cmd/resp will get different length
> from sdxc
>
>
> 2014-07-23 11:03 GMT+08:00 Eric Fort :
>
> so one is completely unable to reformat an SDXC card with another
>> filesystem type such as ext3?  Is it simply a filesystem issue or are there
>> hardware differences to be overcome?
>>
>> Eric
>>
>>
>> On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson 
>> wrote:
>>
>>> On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort  wrote:
>>> > so can someone link to something definitive stating that for the
>>> beagle bone
>>> > (black) 32GB SDHC is the biggest card supported (assuming this is
>>> correct)?
>>>
>>> From:
>>> http://en.wikipedia.org/wiki/Secure_Digital#SDXC
>>>
>>> The Secure Digital eXtended Capacity (SDXC) format, announced in
>>> January 2009 and defined in Version 3.01 of the SD specification,
>>> supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for
>>> SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT
>>> file system as a mandatory feature.
>>>
>>> aka:
>>> microSDHC 32GB is your limit..
>>>
>>> Regards,
>>>
>>> --
>>> Robert Nelson
>>> http://www.rcn-ee.com/
>>>
>>> --
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Re: [beagleboard] Maximum SD card size for BBB

[Eric Fort]

so one is completely unable to reformat an SDXC card with another
filesystem type such as ext3?  Is it simply a filesystem issue or are there
hardware differences to be overcome?

Eric


On Mon, Jul 21, 2014 at 8:40 AM, Robert Nelson 
wrote:

> On Mon, Jul 21, 2014 at 10:34 AM, Eric Fort  wrote:
> > so can someone link to something definitive stating that for the beagle
> bone
> > (black) 32GB SDHC is the biggest card supported (assuming this is
> correct)?
>
> From:
> http://en.wikipedia.org/wiki/Secure_Digital#SDXC
>
> The Secure Digital eXtended Capacity (SDXC) format, announced in
> January 2009 and defined in Version 3.01 of the SD specification,
> supports cards up to 2 TB (2048 GB), compared to a limit of 32 GB for
> SDHC cards in the SD 2.0 specification. SDXC adopts Microsoft's exFAT
> file system as a mandatory feature.
>
> aka:
> microSDHC 32GB is your limit..
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
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Re: [beagleboard] Maximum SD card size for BBB

[Eric Fort]

so can someone link to something definitive stating that for the beagle
bone (black) 32GB SDHC is the biggest card supported (assuming this is
correct)?

Eric


On Mon, Jul 21, 2014 at 1:52 AM, liyaoshi  wrote:

> As I understand , its not about the size , its about the eMMC spec support
> ,
>
> While sdhc up to support 32G card , the new spec call sdxc ? this will
> support up to 2T , but this is not support by ti omap3/dm81xx/am335x ,only
> support by omap5
>
> So , when you see  a card with sdxc trademark. it should NOT support by
> beagle .even its less than 32G
>
>
>
> 2014-07-19 7:09 GMT+08:00 Eric Fort :
>
> I'm using a 32GB SD card, so yes it works.  Has anyone tried 64GB and
>> larger cards yet?  64 or 128GB would be insanely nice!
>>
>> Eric
>>
>>
>> On Fri, Jul 18, 2014 at 12:04 PM, William Hermans 
>> wrote:
>>
>>> We use two BBB's here, and both use 16GB class 10 cards. I've heard that
>>> 32GB works too, but no hands on.
>>>
>>> AS john said first you want more space( unused, or free space ) on your
>>> sd card to help facilitate wear leveling, *AND* if you're going to be doing
>>> lots of writing for development purposes. Move your rootfs to an NFS share.
>>>
>>>
>>> On Fri, Jul 18, 2014 at 3:05 AM, William Pretty Security <
>>> bill.pre...@xplornet.com> wrote:
>>>
>>>> Thanks John J
>>>>
>>>>
>>>>
>>>>
>>>> http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book
>>>>
>>>>
>>>>
>>>> *From:* beagleboard@googlegroups.com [mailto:
>>>> beagleboard@googlegroups.com] *On Behalf Of *John Syn
>>>> *Sent:* Thursday, July 17, 2014 11:48 PM
>>>>
>>>> *To:* beagleboard@googlegroups.com
>>>> *Subject:* Re: [beagleboard] Maximum SD card size for BBB
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From: *William Pretty Security 
>>>> *Reply-To: *"beagleboard@googlegroups.com" <
>>>> beagleboard@googlegroups.com>
>>>> *Date: *Thursday, July 17, 2014 at 7:58 PM
>>>> *To: *"beagleboard@googlegroups.com" 
>>>> *Subject: *RE: [beagleboard] Maximum SD card size for BBB
>>>>
>>>>
>>>>
>>>> Actually John, I've been having that exact problem !
>>>>
>>>>
>>>>
>>>> How does 'wear leveling' work ?
>>>>
>>>> I have been using an external USB key as temp storage.
>>>>
>>>> http://en.wikipedia.org/wiki/Wear_leveling
>>>>
>>>>
>>>>
>>>> For development purposes, don't use SDCards. Rather use NFS to mount a
>>>> rootfs on your desktop.
>>>>
>>>>
>>>>
>>>> In the field, use a read only rootfs and create a separate partition
>>>> for storage. Flash has to erase a block before writing a byte. If you have
>>>> a logging application, create a buffer in ram which is the size of your
>>>> flash erase block and write data to buffer and only write the buffer to
>>>> disk when the buffer is full. Alternatively, use a power fail detection
>>>> circuitry and only write to SDCard on power failure. There are a lot of
>>>> techniques like this that prolong the life of flash.
>>>>
>>>>
>>>>
>>>> Regards,
>>>>
>>>> John
>>>>
>>>>
>>>>
>>>> Bill
>>>>
>>>>
>>>>
>>>>
>>>> http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book
>>>>
>>>>
>>>>
>>>> *From:* beagleboard@googlegroups.com [
>>>> mailto:beagleboard@googlegroups.com ] *On
>>>> Behalf Of *John Syn
>>>> *Sent:* Thursday, July 17, 2014 10:32 PM
>>>> *To:* beagleboard@googlegroups.com
>>>> *Subject:* Re: [beagleboard] Maximum SD card size for BBB
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From: *William Pretty Security 
>>>> *Reply-To: *"beagleboard@googlegroups.com" <
>>>> beagleboard@googlegroups.com>
>>>> *Date: *Thursday, July 17, 2014 at 6:51 PM
>>>> *To: *"beagleboard@googlegroups.com" 
>>>> *Subject: *RE: [beagleboard] Maximum SD card size

[beagleboard] flashing newest image to beagle bone black

[Eric Fort]

(Robert),

I just downloaded and ran unxz on
https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-console-armhf-2014-07-06-2gb.img.xz
.  this gave me
BBB-eMMC-flasher-debian-7.5-console-armhf-2014-07-06-2gb.img as expected.
I then freshly formatted and resized back to a single 4gb partition with sd
card formatter restoring the sd card to be used to a condition ready to
have the image written (a procedure I've used successfully many times).
this seems to have worked ok (as usual) so I then used DiskImager to write
the image file to the sd card.  all appeared well thus far.  I booted the
beagle bone black with the sd card inserted and the boot button depressed
to see tux in the upper corner of the screen and the led's sweeping back
and forth.  a while later I came back to find all lights lit up which is
the old convention for the flash being complete and remains that way. (the
new images I understand are supposed to poweroff the bone after flashing).


Does, BBB-eMMC-flasher-debian-7.5-console-armhf-2014-07-06-2gb.img not
follow the new methodology of shutting down post-flash?

Eric

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Re: [beagleboard] Maximum SD card size for BBB

[Eric Fort]

I'm using a 32GB SD card, so yes it works.  Has anyone tried 64GB and
larger cards yet?  64 or 128GB would be insanely nice!

Eric


On Fri, Jul 18, 2014 at 12:04 PM, William Hermans  wrote:

> We use two BBB's here, and both use 16GB class 10 cards. I've heard that
> 32GB works too, but no hands on.
>
> AS john said first you want more space( unused, or free space ) on your sd
> card to help facilitate wear leveling, *AND* if you're going to be doing
> lots of writing for development purposes. Move your rootfs to an NFS share.
>
>
> On Fri, Jul 18, 2014 at 3:05 AM, William Pretty Security <
> bill.pre...@xplornet.com> wrote:
>
>> Thanks John J
>>
>>
>>
>>
>> http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book
>>
>>
>>
>> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com]
>> *On Behalf Of *John Syn
>> *Sent:* Thursday, July 17, 2014 11:48 PM
>>
>> *To:* beagleboard@googlegroups.com
>> *Subject:* Re: [beagleboard] Maximum SD card size for BBB
>>
>>
>>
>>
>>
>> *From: *William Pretty Security 
>> *Reply-To: *"beagleboard@googlegroups.com" 
>> *Date: *Thursday, July 17, 2014 at 7:58 PM
>> *To: *"beagleboard@googlegroups.com" 
>> *Subject: *RE: [beagleboard] Maximum SD card size for BBB
>>
>>
>>
>> Actually John, I've been having that exact problem !
>>
>>
>>
>> How does 'wear leveling' work ?
>>
>> I have been using an external USB key as temp storage.
>>
>> http://en.wikipedia.org/wiki/Wear_leveling
>>
>>
>>
>> For development purposes, don't use SDCards. Rather use NFS to mount a
>> rootfs on your desktop.
>>
>>
>>
>> In the field, use a read only rootfs and create a separate partition for
>> storage. Flash has to erase a block before writing a byte. If you have a
>> logging application, create a buffer in ram which is the size of your flash
>> erase block and write data to buffer and only write the buffer to disk when
>> the buffer is full. Alternatively, use a power fail detection circuitry and
>> only write to SDCard on power failure. There are a lot of techniques like
>> this that prolong the life of flash.
>>
>>
>>
>> Regards,
>>
>> John
>>
>>
>>
>> Bill
>>
>>
>>
>>
>> http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book
>>
>>
>>
>> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
>> ] *On Behalf Of *John Syn
>> *Sent:* Thursday, July 17, 2014 10:32 PM
>> *To:* beagleboard@googlegroups.com
>> *Subject:* Re: [beagleboard] Maximum SD card size for BBB
>>
>>
>>
>>
>>
>> *From: *William Pretty Security 
>> *Reply-To: *"beagleboard@googlegroups.com" 
>> *Date: *Thursday, July 17, 2014 at 6:51 PM
>> *To: *"beagleboard@googlegroups.com" 
>> *Subject: *RE: [beagleboard] Maximum SD card size for BBB
>>
>>
>>
>> Quite right, but given that Ubuntu with GUI is about 3GB, isn't the other
>> 13 kind of a waste ??
>>
>> Flash has a finite number of writes so with wear leveling, you want to
>> have a much free space as possible to prevent flash failure. If it is the
>> same price, always get the bigger one ;-)
>>
>>
>>
>> Regards,
>>
>> John
>>
>>
>>
>>
>> http://www.packtpub.com/building-a-home-security-system-with-beaglebone/book
>>
>>
>>
>> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com
>> ] *On Behalf Of *John Syn
>> *Sent:* Thursday, July 17, 2014 8:32 PM
>> *To:* beagleboard@googlegroups.com
>> *Subject:* Re: [beagleboard] Maximum SD card size for BBB
>>
>>
>>
>>
>>
>> *From: *William Pretty Security 
>> *Reply-To: *"beagleboard@googlegroups.com" 
>> *Date: *Thursday, July 17, 2014 at 4:14 PM
>> *To: *"beagleboard@googlegroups.com" 
>> *Subject: *RE: [beagleboard] Maximum SD card size for BBB
>>
>>
>>
>> You probably want about 8GB class 10 for sure.
>>
>> I don't know if there is a maximum size of uSD card.
>>
>> 16GB is about the same price as 8GB. At Amazon, 16GB class 10 is about $8.
>>
>>
>>
>> The class 4 uSD cards aren't very reliable.
>>
>>
>>
>>
>> http://www.packtpub.com/building-a-home-securit

Re: [beagleboard] Concerns with Battery Cape?

[Eric Fort]

you'll have to wait for an official answer as to why they were
discontinued, but I have one and it works ok with both the black or white
bones and pretty much any other capes.  the only caution I have is to use
it only with batteries, as  my cape earned a trip to beagle hospital, i.e.
rma after powering it from a supply of greater than 3v but lower than v-max
specified in the srm which resulted in a release of magic smoke.

Eric


On Tue, Jul 15, 2014 at 8:42 AM, rar76  wrote:

> I bought a battery cape for BBB last year.  I just bought 8 eneloop 2500
> mah AA batteries for it, but I noticed the cape is discontinued.  Was there
> issues with the cape and BBB?
>
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Re: [beagleboard] 4DCAPE-43 on Debian

[Eric Fort]

yes the jumpers need to all be set to an address not used by another board
in the cape stack.


On Tue, Jul 8, 2014 at 10:54 AM, jubishop  wrote:

> Have people gotten this to work on the new Debian Wheezy image?  When I
> plug it in I just get a blank screen.
>
> Sorry if this is a n00b question but It has these "EEPROM" jumpers on the
> back to enter an address, do I need to set that in a certain way?  The only
> other "cape" i'm using is this guy (
> http://elinux.org/CircuitCo:BeagleBone_Battery)  which also says it has
> EEPROM support...i've done some googling but having a hard time finding
> good documentation on the EEPROM stuff...
>
> Also, when you plug in the LCD cape should a graphical interface just
> appear, or do i need to run whatever the equivalent of "startX" or
> something from the command line to bring up the windowing system?
>
> The tiny slip that comes with this LCD says you can reference the quick
> start guide on their products website here:
> http://www.4dsystems.com.au/product/4DCAPE_43/ but neither there nor
> anywhere can i actually find this supposed quick start guide.  only thing
> i've found of any substance is
> http://www.mouser.com/ds/2/451/4DCAPE-43-Datasheet-REV1.1-262097.pdf
>
> thanks for any help!
>
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Re: [beagleboard] Re: 4DCAPE-43 on Debian

[Eric Fort]

the battery cape will come off.  William has a good suggestion to test one
thing at a time and getting the 2 apart is good practice.  just apply
gentle but firm pressure on the ends and corners of the boards in question
working your way around moving a little on each end at a time (8th or 16th
of an inch at most).  further if you think contact may be an issue, don't
hesitate to push the pins on the lcd board in a bit deeper.  things should
not be so loose as to fall out when jiggled, though you may have overdone
it a bit plugging in the battery cape.


On Tue, Jul 8, 2014 at 4:35 PM, jubishop  wrote:

> thanks William,
>
> I wish I could remove the battery cape to test if the pins are all
> connecting, but unfortunately the battery cape isn't coming off at this
> point :)  once it's down on those pins, it doesn't seem to want to relent.
>
> if you're curious about the hardware it's nothing unusual:  i linked to
> the battery cape and lcd cape above, and besides that it's the latest
> revision of BBB with Debian Wheezy 7.  i definitely had power to the cape,
> as I could still ssh into it on 192.168.7.2, and ping around, etc.  i kept
> the 5V 2A power supply plugged in.
>
> Robert, i'll give that a shot and report back. thanks again!
>
>
> On Tuesday, July 8, 2014 2:36:48 PM UTC-7, William Hermans wrote:
>
>> Do keep in mind that I know nothing of your hardware, and am not exactly
>> a hardware guy. However, before you start making modifications to anything
>> I would check to make sure you have power to the cape first. After that, I
>> would remove your battery cape, and plug your LCD cape( I'm guessing )
>> directly into your BBB and see if it works that way.
>>
>> After that I am not exactly sure how I'd proceed, but I may try to find
>> adapter / extension headers before any thing else.
>>
>>
>> On Tue, Jul 8, 2014 at 2:20 PM, jubishop  wrote:
>>
>>> thanks for the followup Robert.  I can see who my main source of wisdom
>>> is going to be here :)
>>>
>>> the screen is actually just 100% blank, no cmd line prompt or anything.
>>>  the screen does power on and turn a light grey, and the user and power
>>> led's on the board light up, but I'm wondering whether maybe I'm not
>>> getting connection on all the pins, because the battery cape doesn't allow
>>> the screen pins to slide down into it's female equivalents very farin
>>> fact if i flip the board over the screen is liable to just fall out of
>>> place...  :(
>>>
>>> i'm going to try outputting the BBB to the tv through the normal HDMI
>>> out and see if i can bring up a window system that way.
>>>
>>> there's just one particular part of the battery cape that is impeding
>>> the progress of the lcd cape from sliding all the way down onto it's pins.
>>>  that particular part is the jumper pins for setting the EEPROM.  I've
>>> attached a photo.  Do you think I could get away with bending these down or
>>> snipping them off or something?  they come with little jumpers to connect
>>> them in different orientations.  if i needed a certain orientation, i could
>>> just snip the pins and then dab a piece of solder between the ones that
>>> needed connecting, maybe?
>>>
>>> thanks again!
>>>
>>>
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[beagleboard] looking for android 4.4 kitkat image for BBB

[Eric Fort]

where can I download a kitkat 4.4 image to use on the beaglebone black?

Thanks,

Eric

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[beagleboard] big little or middle endian (beaglebone debian armhf)

[Eric Fort]

Is the beaglebone running debian armhf big or little endian?  can the
beaglebone black hardware run both as big and little endian?

Eric

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[beagleboard] sd card insertion causes kernel panic

[Eric Fort]

I booted my Beagle Bone Black from the onboard MMC then inserted an SD card
in the SD card slot.  Syslogd imediately began outputting messages to
numerous to capture or reproduce faithfully herin ending in kernel panic
and a system hang.  What's wrong here, and how can I get the partitions on
this card mounted?

Thanks,

Eric

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Re: [beagleboard] Educated Noobie: Should i start with Arduino, or Beagle?

[Eric Fort]

first of all you are going to have to assess your needs.  what do you
really want to do?  how close to real-time processing do you need to be?
the arduino is actually more of an echosystem and a brand than any one
board and it's mostly tied together by the arduino IDE software.  The arm
processor used on the beagle is many times more powerful than the atmel
atmega used on most of the arduinos, but arduino is soon to release an arm
based platform that runs linux.the atmega is simpler and easier to
understand for bare metal hard realtime tasks.  the beagle bone has the PRU
available for use for hard realtime tasks.  really it's what you want to
do.  both will do bare metal but arduino is easier in that respect.  then
again do you need that or would the ease of linux and a full os while using
the pru for realtime tasks be sufficient and make your life easier.  really
it's your choice.

eric


On Wed, Jul 2, 2014 at 11:04 AM, William Hermans  wrote:

> For the cost, a beaglebone black can do far more than any arduino platform
> i know of. However, they are completely different platforms. One is meant
> for embedded Llinux ( although technically the BBB does not need an OS ),
> where the other ( Arduino ) has no OS at all.
>
> Neither one is a micro-controller. The beaglebone black is a single board
> computer, where the Arduino is an open source development board.
>
> I suggest you read and learn more about the field before making up your
> mind. But the Beaglebone black is far superior in every way( except perhaps
> power consumption ). Not to mention they both cost about the same . . .
>
> Anyway, I really do not know what else to say. Except that I could go on
> all day about how / why I like the beaglebone black, and how I dislike the
> Arduino platform in general. But I think this is something you need to
> explore on your own. I have my own reasons, and perhaps my reasons mean
> nothing to you.
>
>
> On Wed, Jul 2, 2014 at 8:35 AM,  wrote:
>
>> Hello all,
>>
>> I want to start playing with an arduinio/beagleboard, but I don't know
>> which to pick. I've heard Arduino is closer to the metal.
>>
>> Currently I want to make robots.
>>
>> Background: B.S. Physics, A.A. computer science, experience in linux, and
>> C programming, Electronics/circuitry course (for my physics degree)
>>
>> I have never done any work with a microcontroller.
>>
>> So, what should I start with, arduino or beagleboard? Why?
>>
>> Thank you,
>>
>> -Plotnus
>>
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Re: [beagleboard] BBB dial up phone capability

[Eric Fort]

how about using asterisk and a usb or ethernet based ata?

a list of apropriate hardware is here:

http://www.voip-info.org/wiki/view/Analog+Telephone+Adapters


On Wed, Jul 2, 2014 at 11:14 AM, Bosko Loncar 
wrote:

> My project requires the BBB to dial a phone number over an old fashioned
> telephone line and play a wav file.  I haven't seen anything that will
> allow me to do that...  is there  a modem available to use?
>
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Re: [beagleboard] TNC Cape Now Available for the BBB

[Eric Fort]

Great start. But how about integrating a 5W transceiver directly on the
cape?  That way you could go RF to bits and bits to RF without an external
radio similar to a t3-301
 from argent data or similar.nice as well that it can use i2c!

Eric


On Wed, Jun 11, 2014 at 11:07 AM, John Hansen  wrote:

> TNC-Black, a KISS mode terminal node controller (radio modem) cape is now
> available for the BBB.  For full details see: www.tnc-x.com/TNCBlack.htm.
>
> John Hansen W2FS
> Coastal ChipWorks
>
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Re: [beagleboard] Radio Spares (UK) - BBB - Out of Stock

[Eric Fort]

fyi newark/farnell/element14 one in the same.


On Tue, Jun 10, 2014 at 3:39 AM, Mark Hopewell <
ryme.intrinseca1...@gmail.com> wrote:

> Thank you, David.
>
> I just ordered it from Farnell and who have the least UK waiting time.
>
> Thank you again for the pointer, it is very much appreciated.
>
> M.
>
>
> On 10 June 2014 11:04, David Goodenough  > wrote:
>
>> You could try Farnell.  They are manufacturing their own boards using
>> the same design, and have a UK presence.
>>
>> David
>>
>> On Tuesday 10 June 2014 10:51:59 Mark Hopewell wrote:
>> > Thank you Eric,
>> >
>> > No matter where I look, everyone is out of stock and back order lists
>> are
>> > lengthy.
>> >
>> > I mention RS, here in the UK, as they are a large supplier here in the
>> UK
>> > and are called "Allied" in the USA. You list Allied in your suggestion
>> for
>> > sources of BBB's.
>> >
>> > Anyway, back to the drawing board, or should I say empty breadboard? .
>> . .
>> >
>> > Thanks for the suggestions meanwhile,
>> >
>> > M.
>> >
>> > On 10 June 2014 09:05, Eric Fort  wrote:
>> > > They may be out of stock, but bear in mind they are not the only
>> place on
>> > > the planet that sells them either.  Try ordering from boardzoo,
>> digikey,
>> > > adafruit, Newark, Allied, or a whole list of other places.
>> > >
>> > > Eric
>> > >
>> > >
>> > > On Tue, Jun 10, 2014 at 12:46 AM, Mark Hopewell <
>> > >
>> > > ryme.intrinseca1...@gmail.com> wrote:
>> > >> Hello,
>> > >>
>> > >> Is it really the case that BBB rev c is going to be out of stock
>> until
>> > >> late September in the UK?
>> > >>
>> > >> Radio Spares (UK) state ETA of late September before restock.
>> > >>
>> > >> Meanwhile, really keen to get my hands on a BBB and 3 months is an
>> > >> awfully long to wait if I've misunderstood the supply problem.
>> > >>
>> > >> Many thanks,
>> > >>
>> > >> M.
>> > >>
>> > >> --
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Re: [beagleboard] Radio Spares (UK) - BBB - Out of Stock

[Eric Fort]

They may be out of stock, but bear in mind they are not the only place on
the planet that sells them either.  Try ordering from boardzoo, digikey,
adafruit, Newark, Allied, or a whole list of other places.

Eric


On Tue, Jun 10, 2014 at 12:46 AM, Mark Hopewell <
ryme.intrinseca1...@gmail.com> wrote:

> Hello,
>
> Is it really the case that BBB rev c is going to be out of stock until
> late September in the UK?
>
> Radio Spares (UK) state ETA of late September before restock.
>
> Meanwhile, really keen to get my hands on a BBB and 3 months is an awfully
> long to wait if I've misunderstood the supply problem.
>
> Many thanks,
>
> M.
>
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[beagleboard] device tree for battery cape

[Eric Fort]

Does a device tree file exist for the battery cape?  if so where may I
download it.  If not, how can I create  it?

Thanks,

Eric

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Re: [beagleboard] BeagleBone Black web server

[Eric Fort]

Where does httpd.conf say your files should go?


On Fri, Jun 6, 2014 at 10:07 PM, Michael Thompson <
thompsonmichael...@gmail.com> wrote:

> I flashed Debian to the eMMC and it seems to be working fine. My plan is
> to host a small web page using Apache. I installed Apache and using the IP
> address the BeagleBone 101 loads fine from outside my network.
>
> So, my question is, in what directory do I save my index.html file in
> order to see it as the default page served by Apache? There are no files in
> the /var/www/ directory so I am confused. On my Linux Mint (Debian edition)
> all I had to do was save my index file in the www directory.
>
> Anyone know where I am going wrong?
>
> Thanks!!
>
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[beagleboard] Hooking up a bbb to xbox360 to use it's wifi internet connection..?

[eric . ebling . ee]

Hey all, so I have no experience with the BBB and am wondering if this 
would be possible. I have an xbox 360 with the wifi module so my xbox can 
use the internet connection in my apartment. Is it possible to connect the 
BBB to the ethernetconnection on the back of the xbox and use the wifi from 
the xbox to get online with the BBB.? I have the BBB connected to my tv so 
the xbox is right there and it would be cool if i can somehow just use it 
as my internet connection. Thanks for any info.

E

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Re: [beagleboard] Some help required

[Eric Fort]

basic email works. just put a script together that invokes your mailer with
the proper attachments.


On Fri, Jun 6, 2014 at 3:05 AM, Alastair Gilmore 
wrote:

> Hi, I'm working on a project to grab images from a webcam and send them to
> a web site, triggered by an alarm system. I have the image grab working and
> saving the files, all low res. about 60Kb. I'm not sure how to send these
> automatically to the web site. I write in 'C' and am looking for a tutorial
> to automatically invoke FTP or some other method to periodically connect to
> a web site and send the files.
>
> I'm using Ubuntu 12 LTS on the BBB.
>
> Any guidance would be greatly appreciated.
>
> --
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Re: [beagleboard] Do as Raspberry - Make a Beaglebone Black - Compute Module !? - Why not

[Eric Fort]

These pretty much already exist as a module check out gumstix which ave
been around for quite some time.

Eric


On Thu, Jun 5, 2014 at 11:11 AM, John Syn  wrote:

>
>  From: CEinTX 
> Reply-To: 
> Date: Thursday, June 5, 2014 at 7:22 AM
> To: 
>
> Subject: Re: [beagleboard] Do as Raspberry - Make a Beaglebone Black -
> Compute Module !? - Why not
>
> John,
>
> You definitely make some good points, however...
> I don't really feel I missed the mark completely.
> So when you say 'developer', do you mean hobbyist or product developer.
> If you mean hobbyist, I understand your comments completely.
> If not, that's a totally different situation entirely. If you are
> developing a product for sale,
> then I have little sympathy / empathy / whatever for not wanting to deal
> with the
> technology required to build a product. It's not cheap, easy, simple,
> _ fill in
> any of a long list of adjectives to describe the difficultly of designing
> a product much less
> building a business around it to market and sell it.
>
> One is not entirely constrained by the BBB design
> in doing your own - see what comes below
>
> (When I say 'you' in my comments - it's not pointed at you John but a
> general you from
> the community standpoint)
>
> I personally don't see these as problems as I've been doing this my whole
> professional career.
> So, yes I'm probably trivializing some of this as I don't see any of these
> items as potential
> stumbling blocks.
>
> By the BBB statements of use - this is not for commercial use. Although I
> know from speaking
> with Gerald, that many are using this for commercial apps. That's also one
> of the reasons that
> the supply is being gobbled up. So for those of you out there that are
> complaining about not being
> able to get BBBs, blame those that are not following the licensing and
> terms of use and eating
> up the supply for their commercial needs versus developing their own board.
>
> Here's a thought for you Gerald, require your distributors/resellers to
> have a reverse discount
> model. So as the volume goes up, so does the price - this should
> discourage volume buys
> without the organization's consent, which you are suppose to have if using
> this product
> commercially, and would make the distributors happy by increasing their
> margins.
> Or would require a custom 'factory' price to get a volume purchase at a
> discount to get
> around this. This is done the other way around - via product/design
> registrations all the
> time in the electronics distribution model.   Just a thought.
>
> Gerald & Co need to keep their costs as low as possible and this doesn't
> only refer to the cost of materials and labor, but also the cost of money.
> Therefor they need a consistent supply model with minimal supply
> interruptions because the last thing they need is to sit with large
> inventory when the demand dries up. Don't mess with pricing because there
> could be all kinds of unintended consequences. While the inventory
> shortfall is really irritating to most, it is because of the demand that is
> helping to keep the pricing down. Gerald has to manage a find balance
> between delayed delivery and maintaining demand volumes. Gerald & Co are
> continuing to add resources to increase monthly volume and I think that is
> the best approach.
>
>
> So really it's suppose to be either for small non-commercial projects or
> using as a shortcut
> to figuring out what you need and don't to roll your own. It's not a one
> size fits all or trying
> to be everything to everybody - like a lot seem to think it is or should
> be. So really the capes
> and position of connectors, to me, are really a moot point as one is not
> suppose to be relying
> on this as a product platform. If it's not where you want or need for your
> product - roll your own.
>
> Embedded system design is not for the faint of heart. You need tools and a
> lot of patience to get
> it done - education, experience, and skill doesn't hurt either. If you
> don't have the tools or skills
> needed to leverage what Gerald and Co have done here, maybe as part of
> your business model,
> you should have some budget for tools and an engineer or hire a design
> house, um maybe like
> CircuitCo or another, to help fill the void. Just a thought. If you're
> just a hobbyist, then most of
> this discussion is moot, because you should just try to make what's
> available work or develop
> a much simpler cape to do what else you need. And if that doesn't work -
> you're back to 

Re: [beagleboard] Beaglebone Black Ethernet Phy Not Detected on Boot.

[Eric]

Just found this thread, adding my 2cents. 

We are using kernel 3.8.13-bone30. We have seen many cases of ethernet 
issues, usually that the ethernet port does not come up at all (no lights). 
I would say it happens one out of every 20 boots. We are using a cape, but 
just to extend i/o and provide power.

If anyone has any suggestions or kernel versions that work better, help 
would be greatly appreciated. I am currently working on a workaround to 
make the beaglebone detect the lack of ethernet and reboot itself, but this 
could lead to some really long boot times, and not having the problem at 
all would be much better!

On Friday, May 30, 2014 4:40:50 AM UTC-7, pori...@gmail.com wrote:
>
> On Wednesday, March 19, 2014 8:52:36 PM UTC+1, RobertCNelson wrote:
>>
>> On Wed, Mar 19, 2014 at 2:47 PM,   wrote: 
>> > Does anyone happen to know if the 3.8 kernel compiled as per these 
>> > instructions here http://eewiki.net/display/linuxonarm/BeagleBone+Black 
>> also 
>> > contains the fix? I have a root file system already that I want to use 
>> but 
>> > would like to update my kernel to fix this problem. 
>>
>> Sorry, "the fix" is too generic of a term, therefore I can neither 
>> confirm nor deny it. Either way, that 3.8 branch listed is the one 
>> currently used in all debian/ubuntu images being shipped. 
>>
>>
>>
>  I'm using 3.14.4 kernel (latest stable) - and 'the fix' doesn't seem to 
> have been pushed there - could you give more information about what 'the 
> fix' is?
>

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Re: [beagleboard] Re: BeagleBone Enhanced

[Eric Fort]

how about 2 versions of an enhanced black.  one, as is but with 8GB eMMC.
The other with the HDMI framer, audio codec and eMMC along with associated
parts *UNPOPULATED*.  Either ought be an easy change as one option just
involves the robot not populating certain parts, and the other the robot
just need place differen't parts.  the board remains the same.

Eric


On Tue, Jun 3, 2014 at 3:30 PM, Jesse Cobra  wrote:

> Well for cape support and dual Ethernet just make it easy to disable the
> second eth for cape usage. Asst some point you have to disable something to
> get what you want...
>
> Most people disable HDMI for example when using an audio cape for the same
> reason.
>
> If enough people want dual eth, must be something worth doing!
> On Jun 2, 2014 1:58 PM,  wrote:
>
>> Thanks for your comments.
>>
>> Interesting though about dual Ethernet, however this would mean moving
>> away from the BBB cape support due to the pins you would loose.
>>
>> Many people have asked for 1GB RAM and we are investigating this now.
>> Given that x16 8Gbit devices are only made by Micron, and so single
>> sourced, we are working on the impact on the PCB to move to two x8 4Gbit
>> devices instead.
>>
>> David
>>
>> On Monday, May 26, 2014 12:33:30 PM UTC+1, asan...@gmail.com wrote:
>>>
>>> Hi All
>>>
>>> We are thinking of doing a BeagleBone compatible board with some
>>> enhanced features. Rather than guess at what people want we would like your
>>> input, what extra interfaces or devices would you like on the board?
>>>
>>> Either us the link to the form below or post in the thread.
>>>
>>> BB Enhanced form
>>> <https://docs.google.com/forms/d/1Tj4xNRruoApCiS-YpRNcCMQiqcTSYWOdotdGMrJ6Mx4/viewform?usp=send_form>
>>>
>>> Personally I would like extra USB ports (with one on a header to
>>> connector to a cape) and maybe 1GByte of RAM.
>>>
>>> David
>>> SanCloud
>>>
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Re: [beagleboard] Beagleboneblack

[Eric Fort]

It would be a bit easier for most of us here if you posted in english as
that is what most of those here use a a language for exchanging ideas and
asking questions but google translate does a decent job of giving the
gist of what you are asking.  As Gerald replied, you need only provide 5V
to the board to power it either via the DC input jack or via usb.  the i2s
interface *is* available on the expansion headers, but bear in mind that
you'll have some software work to get it configured as i2s and at the
correct rate.  The Software reference manual shows which pins carry i2s
(when the proper pinmux is set / the right overlay loaded)  you may also
wish to refer to the audio cape pin usage for more details.
http://elinux.org/images/1/11/Audio_Cape_B1_Schematic.pdf.  Also note that
i2s is connected to the HDMI parts on the Black, so you probably will be
required to disable the HDMI framer to make use of it.

see also:
https://github.com/CircuitCo/BeagleBone-Black/blob/master/BBB_SRM.pdf?raw=true
pp.
for more info.

Eric


2014-06-03 14:04 GMT-07:00 :

>
> Ho deciso di acquistare Beaglebone black per utilizzarlo con volumio
> nell''ascolto della musica liquida. Ho scelto  Beaglebone black in quanto
> ho  letto su Audioreview che ha un uscita i2s ed è molto curato nelle
> alimentazioni interne . Attualmente posseggo un DAC autocostruito  con
> ingresso I2S convertitore Sabre  Ess 9018.
>  Con un cavo   Rj45  di  75cm collego il DAC con   l'uscita i2s della
> meccanica del lettore CD è un Philipd CDpro2m.
> Ecco le mie domande: dal manuale   Beaglebone black non riesco trovare da
> quali pin escono i seguenti dell'i2s  segnali utili al convertitore Ess
> 9018 che sono BCK, LRCK, DATA e GND.
> Utilizzando Volumio i messaggi musicali in PCM fino a 24bit 192Khz sono
> gestibili cosi pure il DSD?
> Volumio manifesta la sua resa migliore in wireless .
> Posso utilizzare più alimentatori separati per fornire le diverse tensioni
> oppure sono obbligato a fornire solo 5V.
>
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Re: [beagleboard] differences between white and black

[Eric Fort]

ok, so faster processor and memory and a few tweaks on the power path (that
allow for and enable faster memory).  anything else?  sounds like an
inexpensive high-performance version of the white could be build cheaply by
leaving parts unpopulated on the black.  The usb serial chip isn't really
necessary since the software enhancements now make it show up as a usb
"gadget".  Kinda wondering what the white offers that the black with no
framer or eMMC would not?

Eric


On Tue, Jun 3, 2014 at 12:57 PM, Gerald Coley 
wrote:

> DDR3L? PMIC configuration?
>
> Gerald
>
>
>
> On Tue, Jun 3, 2014 at 2:53 PM, Eric Fort  wrote:
>
>> If someone assembled a beaglebone black but left off the eMMC and HDMI
>> framer chips what would the differences be between that and the beaglebone
>> white?  (other than the white has usb serial and usb jtag which the black
>> lacks)
>>
>> Thanks,
>>
>> Eric
>>
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[beagleboard] differences between white and black

[Eric Fort]

If someone assembled a beaglebone black but left off the eMMC and HDMI
framer chips what would the differences be between that and the beaglebone
white?  (other than the white has usb serial and usb jtag which the black
lacks)

Thanks,

Eric

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Re: [beagleboard] Debian + Resizing Partition

[Eric Fort]

Actually if you start with the flasher image found at   https://rcn-ee
.net/deb/flasher/wheezy/
<https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz>
you ought to be able to easily fit what you want to do on the 2GB eMMC on
the board without any extra card.  You'll even have bunches of space left!
The issue of the question you were asking is that with Unix/Linux type
systems you have physical partitions which then make volumes, then
filesystems, then get mounted somewhere on the filesystem tree.  this is
how for instance your CD-ROM drive gets mounted and ends up in the
directory tree as /mnt/cdrom.  Note, that with the beaglebone black which
has 2GB on board (kinda like the hard disk on your desktop) and a slot for
the removable SD card (kinda like the cd-rom drive) you have 2 physical
media devices.  Because of this except for very special cases (RAID) one
filesystem (partition on a physical device) will be mounted as / , another
partition (generally but not necessarily on the same physical device)
mounted as /boot, and other partitions/filesystems on other physical
devices mounted elsewhere in the directory tree.  being as you have
multiple physical devices they will be joined by partitioning them and
mounting those partitions/filesystems where needed on the directory tree.

Eric


On Tue, Jun 3, 2014 at 10:21 AM, Michael Coulton  wrote:

> Eric
> Thank you very much for taking the time to respond to my earlier post. I
> will read the links and try again. FYI I've tried both flashing the eMMc
> and booting from the SD card (8GB in size). In both cases I have very
> little time to log into a terminal session. I have to SSH in via Putty.
> Ultimately I'd like to set up the BBB as an OpenVPN server and load in LXDE
> as a GUI. It sound like I should be able to do all on this from the SD card
> (space permitting).
> Thanks again, Eric.
> Michael
>
>
> On Saturday, May 31, 2014 12:30:57 PM UTC-4, Eric wrote:
>
>> Mike,
>>
>> Just reread your question again.  Note, the onboard eMMc is pretty well
>> filled by the standard image as was referenced by the following query to
>> the list.
>>
>> https://groups.google.com/forum/#!searchin/beagleboard/Out$20of$20space$
>> 20immediately$20after$20flash/beagleboard/etpYcY6aHHc/ceNDm_15s8YJ
>>
>> What you want to do in reality though is not so much resize the eMMC
>> partition (though, I'd still use the provided tools to make as much space
>> there as you can) as use the SD card to add space to your filesystem.
>>
>> Start by understanding how filesystems under unix generally are built.
>> one has a number of volumes or partitions that are "mounted" in various
>> places on the filesystem.  Where you choose to mount these volumes really
>> depends upon where you need the space.  Normally you might mount a volume
>> as /home if say you had a lot of users needing storage in their home
>> directories or maybe you need more space for binaries so you'd mount a
>> volume specifically for /bin or /sbin.  sometimes you may have seperate
>> volumes mounted for /var  or others as well.  Unfortunately on the black
>> you're somewhat constrained with only the emmc and a single SD slot and if
>> you need more than the 2GB provides across multiple mounts it may be easier
>> to just use a SD card of sufficent size as your root filesystem to begin
>> with.  Generally most images put / and /boot on separate partitions.  from
>> there with a big enough card everything except /boot goes on the /
>> partition.  this makes things easy, especially for newcomers.  While you
>> could conceivably come up with a complex and elaborate partitioning scheme
>> spread across many volumes and mounts with a usb hub and 49,000 usb drives,
>> 42, 890 network mounts, and a paper tape punch/reader for storage (not
>> literally... I'm demonstrating absurdity by being absurd) it may just get a
>> bit unwieldy.   The way I solved this problem was to spend about $20 on a
>> 32GB microSD card which I boot from and use as my root filesystem.  I can
>> then setup the eMMC onboard as 2GB of space to use for such things as my
>> personal home directory or whatever else I feel like.  maybe the best
>> option though is to install the absolute bare minimum small filesystem
>> flash image found here http://eewiki.net/display/
>> linuxonarm/BeagleBone+Black#BeagleBoneBlack-
>> RootFileSystem%28smallflash%29 to eMMC and use an SD card as your "big"
>> filesystem.  that way the black still has someting minimal that boots and
>> when you need it, you can boot to your huge filesystem from SD card.
>>
>> Eric
>>
>>
>>

Re: [beagleboard] Announce: Flasher Changes

[Eric Fort]

On Mon, Jun 2, 2014 at 10:23 AM, Jason Kridner 
wrote:

> On Thu, May 29, 2014 at 8:29 PM, Eric Fort  wrote:
> > It would seem that a piece of "official" documentation ought to be
> updated
> > then.   As of 5:21pm Pacific time on 29MAY2014
> > http://beagleboard.org/Getting%20Started#update still reflects the old
> > pattern.  I'd propose the following sentence be added, "flasher images
> dated
> > after  automatically power down the board upon
> > completion, thus all 4 USRx LEDs will be off."
>
> Thanks for the concrete suggestion. Please check the updated wording
> for clarity.
>
>
>
Yes, now works as stated.  The only reason I somewhat avoided the
construction used is that one could ask "which is it, on or off?" but I did
notice that the flasher actually illuminates all 4 LED's briefly prior to
power off.  So yes, it is kinda both.  hopefully people will have sense
enough to figure out that an unpowered board will have no indicators
illuminated (as they require power)

Eric

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Re: [beagleboard] Did I kill my BBB?

[Eric Fort]

Since you're booting from SD card is the card Fully seated?  Just checking,
as it's in a spot easily bumped and I've knocked it out a couple times
without realizing it then thought "oh, what happened, it's dead!".  Also to
boot from SD you need to depress the boot switch.  really though to do much
debugging on the black you need a serial console cable.  you can also check
which of the power rails are up.  do you have 3v3 on the headers?  What do
the 4 lights show?  Also what voltage are you showing on the power adapter
under load and across both vcc_5v and sys_5v.  If you have any capes
stacked / plugged in unplug them and test the black alone.  Remember to
simplify.  no matter what, all the best in getting things going as I too
have done stupid things that set me back a week or more.  the good news is
that you will get past it and get things working.

Eric


On Sun, Jun 1, 2014 at 9:46 AM,  wrote:

> I have been trying to configure LinuxCNC on my BBB for some time.
> Everything was almost working, but when I tried to turn on the BeagleBone
> today, it wouldn't start. No power led, nothing. I was using the AC/DC
> converter I got from Adafruit, so it's not low quality (I assume). I also
> tried plugging it in via usb, same result. Any ideas?
>
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Re: [beagleboard] how hot does the processor on your beaglebone black get? How hot should it get?

[Eric Fort]

The point of using a finger as a measure of tempreature is it's something
easy to do and subjectively compare within a group as at least most of us
have fingers but not many of us will have an IR thermometer handy.
generally one can't remain in contact with things of higher temp for as
long as those of cooler temp thus it makes a nice subjective test.  50C is
a good number to know though.  how warm should a chip running at 750MHZ get?

Eric


On Mon, Jun 2, 2014 at 5:16 AM, Gerald Coley  wrote:

> The longer you hold your finger on the processor, the hotter the your
> finger gets. It should run right around 50 C when running at 1GHz.
> Beaglebone white default was 750MHz.
>
> Gerald
>
>
>
> On Sat, May 31, 2014 at 8:00 PM, John Syn  wrote:
>
>>
>>  From: Eric Fort 
>> Reply-To: 
>> Date: Saturday, May 31, 2014 at 2:54 PM
>> To: beagleboard 
>> Subject: [beagleboard] how hot does the processor on your beaglebone
>> black get? How hot should it get?
>>
>> I've had some issues recently with my beagle bone black going stupid,
>> dropping from the network and at times being flaky and unresponsive.  when
>> I picked up the board it felt substantially warmer than my beaglebone
>> white.  Both are running on 5VDC input power (measured at 5.00V with a
>> VOM).  the processor on the Beaglebone White I can place my finger on top
>> of and leave it there indefinitely.  The processor on the Beaglebone Black,
>> is hot enough that after 5-10 seconds I can no longer hold my finger on
>> it.  Is this normal?  How long can you hold your finger on the processor of
>> your Beaglebone Black before it becomes uncomfortably warm?  Please nobody
>> try this to the point of burning your (or someone else's) fingers.
>>
>> It depends on the CPU frequency and CPU load. If you are running at 1GHz
>> and near 100% CPU load, then the processor gets quite hot (5-10 seconds is
>> about right). If your CPU load is low, then this is not normal. At 300MHz
>> and less than 10% CPU load, the CPU should be just warm.
>>
>> Regards,
>> John
>>
>>
>>
>> Eric
>>
>> --
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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

If you need systemd, you can install it but unless you need it, plain
ole init works fine.  but yea, the idea with a bare image in that you
choose and install just what you need.  so install what you need and go
from there.

Eric


On Mon, Jun 2, 2014 at 3:52 AM, Charles Kerr 
wrote:

> I have to agree, the small version debian version works great!  I
> installed it, put my build-essentials on, added the arm development, vim,
> and ca-certificates.  I am up and running, ssh'ing in and doing my
> development.  Plenty of room left on my 2Gb eemc.
>
> So this works fantastic!   I haven't done any startup scripts or time
> scanning, I am assuming I would have to do something like an apt-get
> install systemd and an apt-get install nftp  to get those setup?
>
>
> On Sun, Jun 1, 2014 at 9:29 PM, Robert Nelson 
> wrote:
>
>> > actually, for lack of hitting send immediately, I'm using the
>> >
>> https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
>> > image and it's pretty sweet.  only a couple hunderd MB used with lots of
>> > space left (as it should be).  The network even works with dhclient
>> > preinstalled and running on eth0 so it gets assigned an address on my
>> > network via dhcp and I can ssh in.  Couple things I noticed as being
>> > different though.  first off one has to login as Debian:temppwd (no root
>> > login, and password required),
>>
>> Yeap, out of the box it's a little more secure via personal
>> preference. The beagleboard.org image has root enabled by default to
>> help transition people from Angstrom..
>>
>> You can get root back by:
>>
>> sudo passwd root
>>
>> (to disable)
>> sudo passwd -l root
>>
>> I blanked out the root password, ssh, sudo/etc via:
>>
>>
>> https://github.com/beagleboard/image-builder/blob/master/target/chroot/beagleboard.org.sh#L456
>>
>>
>> > sudo must be used (which one should probably
>> > do anyway), and reboot/shutdown/halt/poweroff are all missing (probably
>> for
>>
>> They exist, it's just that a normal user doesn't have /sbin/ in the
>> path, i patched the bb.org image with:
>>
>>
>> https://github.com/RobertCNelson/boot-scripts/blob/master/mods/debian-add-sbin-usr-sbin-to-default-path.diff
>>
>> So, "sudo reboot" works, but "reboot" doesn't.
>>
>>
>> > lack of the systemd package) so the only means to reboot the machine is
>> via
>> > pulling the power plug (or possibly pressing reset which I didn't think
>> of
>> > until just now) both of which require physical access to the
>> machine.
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> http://www.rcn-ee.com/
>>
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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

well after:

 sudo apt-get install bluetooth bluez bluez-tools lm-sensors festival bzip2
wireshark zip alsa-oss oss-compat timidity pmidi ffmpeg mplayer sox mpg123
fluid-soundfont-gm fluid-soundfont-gs less screen bash-expansion
configure-debian

as well upgrading the kernel

I still actually have space left to play within 2GB.  some of Debian's
dependencies can be quizzical at best and increase bloat, such as why in
the heck did the above install samba?.  oh, well.. at least it can now
share files with poorly secured windows boxen in strange and unknown
places, lol.

Eric


On Sun, Jun 1, 2014 at 7:10 PM, Robert Nelson 
wrote:

> On Sun, Jun 1, 2014 at 8:48 PM, Eric Fort  wrote:
> > btw, is there a non-flasher version of
> >
> https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
> > available or what happens if I put this image into a board (white) that
> has
> > no eMMC onboard?  just how badly will it barf and what exactly do I end
> up
> > with?
>
> It's basicly this one:
>
> https://rcn-ee.net/deb/microsd/wheezy/bone-debian-7.5-2014-05-06-2gb.img.xz
>
> Ran into an odd 'flasher' script bug, so quickly released a "2014-05-15"..
>
> I hopeing to push out the June release this week, so the date stamps
> between "microsd" and "flasher" directories will match again.
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
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[beagleboard] looking for a means to sniff data on i2c0 on beaglebone

[Eric Fort]

Is there a good place on the beagleboard where I may be able to sniff out
and monitor the data flowing on i2c0?  it's not brought out to p8 p9 but
communicates to chips onboard like the PMIC.  I'd like to view (realtime)
the data on that bus.

Thanks,

Eric

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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

btw, is there a non-flasher version of
https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
<https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz>available
or what happens if I put this image into a board (white) that has no eMMC
onboard?  just how badly will it barf and what exactly do I end up with?

Eric

<https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz>


On Sun, Jun 1, 2014 at 6:29 PM, Robert Nelson 
wrote:

> > actually, for lack of hitting send immediately, I'm using the
> >
> https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
> > image and it's pretty sweet.  only a couple hunderd MB used with lots of
> > space left (as it should be).  The network even works with dhclient
> > preinstalled and running on eth0 so it gets assigned an address on my
> > network via dhcp and I can ssh in.  Couple things I noticed as being
> > different though.  first off one has to login as Debian:temppwd (no root
> > login, and password required),
>
> Yeap, out of the box it's a little more secure via personal
> preference. The beagleboard.org image has root enabled by default to
> help transition people from Angstrom..
>
> You can get root back by:
>
> sudo passwd root
>
> (to disable)
> sudo passwd -l root
>
> I blanked out the root password, ssh, sudo/etc via:
>
>
> https://github.com/beagleboard/image-builder/blob/master/target/chroot/beagleboard.org.sh#L456
>
>
> > sudo must be used (which one should probably
> > do anyway), and reboot/shutdown/halt/poweroff are all missing (probably
> for
>
> They exist, it's just that a normal user doesn't have /sbin/ in the
> path, i patched the bb.org image with:
>
>
> https://github.com/RobertCNelson/boot-scripts/blob/master/mods/debian-add-sbin-usr-sbin-to-default-path.diff
>
> So, "sudo reboot" works, but "reboot" doesn't.
>
>
> > lack of the systemd package) so the only means to reboot the machine is
> via
> > pulling the power plug (or possibly pressing reset which I didn't think
> of
> > until just now) both of which require physical access to the machine.
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

This image *is* as it should be then as one really ought not be doing
system reconfiguration and reboots as a mere mortal user (I certainly don't
want my users doing these things!) but one gets used to the image
they've been using.  Thanks again for the work you put into this.  I, most
definately, and most of the community individually owe and ought buy you a
beer (or whatever your taste may be) given the opportunity.  (same goes for
Gerald and others on this list that stand out as being helpful and making
this all work for the greater community)

Eric


On Sun, Jun 1, 2014 at 6:29 PM, Robert Nelson 
wrote:

> > actually, for lack of hitting send immediately, I'm using the
> >
> https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
> > image and it's pretty sweet.  only a couple hunderd MB used with lots of
> > space left (as it should be).  The network even works with dhclient
> > preinstalled and running on eth0 so it gets assigned an address on my
> > network via dhcp and I can ssh in.  Couple things I noticed as being
> > different though.  first off one has to login as Debian:temppwd (no root
> > login, and password required),
>
> Yeap, out of the box it's a little more secure via personal
> preference. The beagleboard.org image has root enabled by default to
> help transition people from Angstrom..
>
> You can get root back by:
>
> sudo passwd root
>
> (to disable)
> sudo passwd -l root
>
> I blanked out the root password, ssh, sudo/etc via:
>
>
> https://github.com/beagleboard/image-builder/blob/master/target/chroot/beagleboard.org.sh#L456
>
>
> > sudo must be used (which one should probably
> > do anyway), and reboot/shutdown/halt/poweroff are all missing (probably
> for
>
> They exist, it's just that a normal user doesn't have /sbin/ in the
> path, i patched the bb.org image with:
>
>
> https://github.com/RobertCNelson/boot-scripts/blob/master/mods/debian-add-sbin-usr-sbin-to-default-path.diff
>
> So, "sudo reboot" works, but "reboot" doesn't.
>
>
> > lack of the systemd package) so the only means to reboot the machine is
> via
> > pulling the power plug (or possibly pressing reset which I didn't think
> of
> > until just now) both of which require physical access to the machine.
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
> ---
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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

definitive answer:

it's already there.  part of the debconf package  somehow the path
misses it.

try:

sudo /usr/sbin/dpkg-reconfigure tzdata

works like a charm.

seems reboot, shutdown, halt, and poweroff are there as well (found in
sbin) but the path again misses those as well.  yea, no need for systemd
(though I'm certainly not opposed to it for consistency sake with the
larger demo image that gets posted.  thus far Ive installed 3 packages I
use often, "less, screen, configure-debian & bash-completion", but no big
deal that they are not there though I'd love to see them included.  All in
all great job on a small extremely usable debian image!  It's what ought be
offered as standard as it's so much easier to add what you want and need
then to remove what you don't.  just a couple tweaks as mentioned and it's
ideal.

Thanks Robert!

Eric


On Sun, Jun 1, 2014 at 5:29 PM, William Hermans  wrote:

> Robert, one thing I have been kind of  wondering that perhaps I should
> know( which I do not ). What is the package that hmm I do not really know
> how to describe it . . . ok like if you issue the command;
>
> *dpkg-reconfigure dash*
>>
>
> or tzdata, or whatever else package wise. On a normal PC you get kind of a
> 8 color console "interface"  with yes on one side no on the other whcih
> highlight when you use arrow keys or tab. Which package is this ? I know
> the default "configuration screen" for bare-fs is teletype. BUt I was
> wondering the name of this package, and how much does it add to the image
> size ?
>
> On Sun, Jun 1, 2014 at 5:20 PM, Robert Nelson 
> wrote:
>
>> On Sun, Jun 1, 2014 at 7:13 PM, William Hermans 
>> wrote:
>> > I should point out however, at least last time I checked that bare-fs
>> does
>> > not come with openssh-server as I kind of hinted at above. So you will
>> need
>> > access to the serial debug terminal at least to install a ssh server .
>> . .
>>
>> Yeah, i took out everything not required to run "dpkg/apt-get" so it's
>> pretty bare. ;)
>>
>> In the process i found out dpkg relies on a huge perl package. As
>> that's about the biggest package in that image.
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> http://www.rcn-ee.com/
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
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>>
>
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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

On Sun, Jun 1, 2014 at 3:29 PM, Robert Nelson 
wrote:
>
> On Sun, Jun 1, 2014 at 5:16 PM, Eric Fort  wrote:
> >
http://debian.beagleboard.org/images/BBB-eMMC-flasher-debian-7.5-2014-05-14-2gb.img.xz
> > - 470MB
> > and
> >
> >
https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
> > - 153MB
> > are indeed different.
> >
> > could the naming convention used in each place be differentiated so one
> > knows what they are getting?  I.E.
> > BBB-eMMC-flasher-debian-7.5--MM-DD-size-type.img.xz with type being
> > descriptive such as bare, netinst, console, GNOME, KDE, BLOAT,
MORE-BLOAT,
> > BIGGER-BLOAT, kitchen-sink, every-existing-debian-package-preinstalled,
and
> > somewhere in there "will-no-longer-fit"!  Might the smaller images be
also
> > made available / linked to on beagleboard.org?
>
> Sure, I can rename them "lxde" and "console".  One of the issues for
> me on getting them on beagleboard.org. TI/beagle people like to verify
> it, so they take a day or two.  The images on rcn-ee.net are merely
> monthly snapshots, i do boot test them, but if we find an issue, it
> usually has to wait till the next month. (although it's been pretty
> regression free as of late)


If they're built from the same base as it looks like they are then
generally missing software has no additional bugs or in the case of must
haves can be added or updated afterwards.

>
>
> >  The images offered on
> > beagleboard.org may make a good 5 minute demo but they are so stuffed
> >  that after doing apt-get update and apt-get upgrade on a new image one
is
> > left with somewhere in the 10-20MB range.  try to install anything for
real
> > work like lm-sensors & i2c tools and you end up with no space left on
>
> i2c tools should be installed by default. ;)


hmm, I don't think I found some of the utilities that should have been
there  no matter, trying to install that after doing an upgrade (which
upgraded a total of 4 packages) put me into no space left territory ans
someone really may want to play with media files which there's not enough
space left for installing even a basic player or 2.

>
>
> > device.  forget about even thinking about installing what you need to
play
> > mp3 or video files.  The smaller images really are needed, and adding a
type
> > field to the naming would be really helpful, as well as letting people
know
> > where images can be had of the type needed for their use.  Those working
> > mostly over serial and ssh really don't get much benefit from the
graphical
> > desktop and all the software it requires, thus a smaller image is
extremely
> > useful.
>
> Another thing, we could start purging the "man" pages and other things
> under /usr/share/ but those built-in stuff is one of the nice things
> about debian.
>
> and if you don't use chromium, that's 100Mb right there.
>

the man pages are nice and really don't take much space so I'd vote for
keeping them (for that which remains installed).  anything that requires X
to run along with X itself can go, but I realize others may want that so
 differen't images for differing needs I guess.  I look forward to getting
the smaller image installed.


actually, for lack of hitting send immediately, I'm using the
https://rcn-ee.net/deb/flasher/wheezy/BBB-eMMC-flasher-debian-7.5-2014-05-15-2gb.img.xz
image and it's pretty sweet.  only a couple hunderd MB used with lots of
space left (as it should be).  The network even works with dhclient
preinstalled and running on eth0 so it gets assigned an address on my
network via dhcp and I can ssh in.  Couple things I noticed as being
different though.  first off one has to login as Debian:temppwd (no root
login, and password required), sudo must be used (which one should probably
do anyway), and reboot/shutdown/halt/poweroff are all missing (probably for
lack of the systemd package) so the only means to reboot the machine is via
pulling the power plug (or possibly pressing reset which I didn't think of
until just now) both of which require physical access to the machine.

Eric



>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
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Re: [beagleboard] 2GB emmc, what is recommended development image?

[Eric Fort]

here's a neat search tool I just learned about:

https://www.debian.org/distrib/packages#search_contents

lets you search packages by their conternts.

going there, and searching for

*dpkg-reconfigure shows the packages that contain it.  it liiks like you're
looking for debconf or maybe cdebconf.  configure-debian looks like another
hit that may take this a step further. *

*Eric*


On Sun, Jun 1, 2014 at 5:29 PM, William Hermans  wrote:

> Robert, one thing I have been kind of  wondering that perhaps I should
> know( which I do not ). What is the package that hmm I do not really know
> how to describe it . . . ok like if you issue the command;
>
> *dpkg-reconfigure dash*
>>
>
> or tzdata, or whatever else package wise. On a normal PC you get kind of a
> 8 color console "interface"  with yes on one side no on the other whcih
> highlight when you use arrow keys or tab. Which package is this ? I know
> the default "configuration screen" for bare-fs is teletype. BUt I was
> wondering the name of this package, and how much does it add to the image
> size ?
>
> On Sun, Jun 1, 2014 at 5:20 PM, Robert Nelson 
> wrote:
>
>> On Sun, Jun 1, 2014 at 7:13 PM, William Hermans 
>> wrote:
>> > I should point out however, at least last time I checked that bare-fs
>> does
>> > not come with openssh-server as I kind of hinted at above. So you will
>> need
>> > access to the serial debug terminal at least to install a ssh server .
>> . .
>>
>> Yeah, i took out everything not required to run "dpkg/apt-get" so it's
>> pretty bare. ;)
>>
>> In the process i found out dpkg relies on a huge perl package. As
>> that's about the biggest package in that image.
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> http://www.rcn-ee.com/
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
>> You received this message because you are subscribed to the Google Groups
>> "BeagleBoard" group.
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>> email to beagleboard+unsubscr...@googlegroups.com.
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>>
>
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