Re: [beagleboard] PRU remoteproc Tutorial

[John Syne]

I wish William would stop saying this. The PRU is nothing like a CortexM3. The 
PRU is a proprietary RISC processor created by Texas Instruments with no 
pipeline and instructions execute in one cycle. The CortexM3 has a 3 stage 
pipeline and uses an entirely different instructions set. 

@Mark
Think of Remoteproc as a firmware loader which can start and stop firmware. The 
communications between PRU and ARM is done via RPMSG which uses a virtual ring 
buffer (VRING) which allow you to post messages to this buffer and then using 
interrupts to notify the PRU/ARM that messages are in the buffer. 

Regards,
John




> On Jul 12, 2016, at 9:25 PM, William Hermans  wrote:
> 
> One of the things I learned is if you use printf() out of the box you will 
> run out of instruction memory.
> Instead you have to use the --printf_support=nofloat flag on clpru.  It uses 
> a smaller printf library that fits.
> 
> Hi Mark,
> 
> Just thinking of this from an alternative angle. The PRU are essentially a 
> Cortex M3 with no instruction cache. So in the Linux world, the Cortex 
> M0/M0+, M3's, and M4's all use the eabi compilers in the gcc camp. Which  is 
> to say, soft float compilers. So that makes sense that using the clpru 
> compiler that soft float should be made implicit. Well actually, I think it 
> should be a given. but it makes sense that the clpru compiler should be using 
> soft float versus hard float.
> 
> 
> 
> On Tue, Jul 12, 2016 at 6:28 PM, Mark A. Yoder  > wrote:
> I made some progress today.  I modified one of the BeagleScope examples 
> (pru_pin_state_reader[1]) to use sprintf() to
> send and print debug info to the ARM[2].  One of the things I learned is if 
> you use printf() out of the box you will run out of instruction memory.
> Instead you have to use the --printf_support=nofloat flag on clpru.  It uses 
> a smaller printf library that fits.
> 
> I'm beginning to get a feel for what's happening on the PRU side, but the ARM 
> is a mystery to me.  I'm sure I can figure out mmap() and read the
> shared memory, but I don't think that's the proper way to do it.  Rather I 
> think you are supposed to go through the kernel drivers, but I haven't found
> any simple examples.
> 
> Does anyone know how the ARM side of remoteproc works?
> 
> --Mark
> 
> [1] 
> https://github.com/ZeekHuge/BeagleScope/tree/port_to_4.4.12-ti-r31%2B/examples/firmware_exmples/pru_pin_state_reader
>  
> 
> [2] 
> https://github.com/MarkAYoder/BeagleBoard-exercises/tree/master/pru/beagleScope/pru_pin_state_reader
>  
> 
> 
> On Monday, July 11, 2016 at 2:58:46 PM UTC-4, Mark A. Yoder wrote:
> It looks like the new way to talk to the PRUs is via remoteproc and RPMsg.  
> 
> Does anyone have pointers to some good tutorials?  Or some good debuggers?
> 
> ZeekHuge has a Google Summer of Code project (2016)  
> that has some nice remoteproc 
> examples, and he
> built some nice tools.  
> 
> I'm putting together a wiki 
>  that shows 
> how to setup your Bone to run his examples. 
> (http://elinux.org/EBC_Exercise_30_PRU_via_remoteproc_and_RPMsg 
> ).
> I'm open for additions/corrections so we can have a one stop place for those 
> using the PRUs with remoteproc.
> 
> --Mark
> 
> 
> 
> 
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Re: [beagleboard] Re: PRU remoteproc Tutorial

[William Hermans]

>
> One of the things I learned is if you use printf() out of the box you will
> run out of instruction memory.
> Instead you have to use the --printf_support=nofloat flag on clpru.  It
> uses a smaller printf library that fits.
>

Hi Mark,

Just thinking of this from an alternative angle. The PRU are essentially a
Cortex M3 with no instruction cache. So in the Linux world, the Cortex
M0/M0+, M3's, and M4's all use the eabi compilers in the gcc camp. Which is
to say, soft float compilers. So that makes sense that using the clpru
compiler that soft float should be made implicit. Well actually, I think it
should be a given. but it makes sense that the clpru compiler should be
using soft float versus hard float.



On Tue, Jul 12, 2016 at 6:28 PM, Mark A. Yoder 
wrote:

> I made some progress today.  I modified one of the BeagleScope examples
> (pru_pin_state_reader[1]) to use sprintf() to
> send and print debug info to the ARM[2].  One of the things I learned is
> if you use printf() out of the box you will run out of instruction memory.
> Instead you have to use the --printf_support=nofloat flag on clpru.  It
> uses a smaller printf library that fits.
>
> I'm beginning to get a feel for what's happening on the PRU side, but the
> ARM is a mystery to me.  I'm sure I can figure out mmap() and read the
> shared memory, but I don't think that's the proper way to do it.  Rather I
> think you are supposed to go through the kernel drivers, but I haven't found
> any simple examples.
>
> Does anyone know how the ARM side of remoteproc works?
>
> --Mark
>
> [1]
> https://github.com/ZeekHuge/BeagleScope/tree/port_to_4.4.12-ti-r31%2B/examples/firmware_exmples/pru_pin_state_reader
> [2]
> https://github.com/MarkAYoder/BeagleBoard-exercises/tree/master/pru/beagleScope/pru_pin_state_reader
>
> On Monday, July 11, 2016 at 2:58:46 PM UTC-4, Mark A. Yoder wrote:
>>
>> It looks like the new way to talk to the PRUs is via remoteproc and
>> RPMsg.
>>
>> Does anyone have pointers to some good tutorials?  Or some good debuggers?
>>
>> ZeekHuge has a Google Summer of Code project (2016)
>> that has some nice remoteproc
>> examples, and he
>> built some nice tools.
>>
>> I'm putting together a wiki
>>  that
>> shows how to setup your Bone to run his examples. (
>> http://elinux.org/EBC_Exercise_30_PRU_via_remoteproc_and_RPMsg).
>> I'm open for additions/corrections so we can have a one stop place for
>> those using the PRUs with remoteproc.
>>
>> --Mark
>>
>>
>>
>> --
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> .
>
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[beagleboard] jessie moved my WiFi cheese

[Jeff Albrecht]

Since I last brought up wifi on a BBB rev c apparently a new way has become 
standard for configuring wifi. connmanctl With a couple BBB rev C that I 
have run Wheezy on with Edimax USB wifi dongles receiving a DHCP ip v4 
address after modifying /etc/network/interfaces. I'm trying to flash a 
jessie image on those same rev C BBBs and dongles and bring up wifi. I've 
tried all of these three images
.
bone-debian-8.4-lxqt-4gb-armhf-2016-05-13-4gb.img
and
BBB-blank-debian-8.5-lxqt-4gb-armhf-2016-06-19-4gb.img
and
bone-debian-8.5-iot-armhf-2016-06-19-4gb.img

Am I using the correct image? Did I miss some RTFM?

I just uncomment the flasher line in uEnv.txt and boot. No messing with 
holding buttons down anymore right? Seems to work.

With both images I get the following running connmanctl Which doesn't look 
like what I've seen in threads here in the Google Groups BBB forum.

A quick ifconfig first

root@beaglebone:~# ifconfig
eth0  Link encap:Ethernet  HWaddr 68:9e:19:8f:eb:2b
  UP BROADCAST MULTICAST DYNAMIC  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
  Interrupt:175

loLink encap:Local Loopback
  inet addr:127.0.0.1  Mask:255.0.0.0
  inet6 addr: ::1/128 Scope:Host
  UP LOOPBACK RUNNING  MTU:65536  Metric:1
  RX packets:10720 errors:0 dropped:0 overruns:0 frame:0
  TX packets:10720 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1
  RX bytes:826080 (806.7 KiB)  TX bytes:826080 (806.7 KiB)

tetherLink encap:Ethernet  HWaddr 74:da:38:42:61:dd
  inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
  inet6 addr: fe80::8c3c:fbff:fec1:115d/64 Scope:Link
  UP BROADCAST RUNNING MULTICAST DYNAMIC  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:43 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:0 (0.0 B)  TX bytes:11299 (11.0 KiB)

usb0  Link encap:Ethernet  HWaddr 68:9e:19:8f:eb:20
  inet addr:192.168.7.2  Bcast:192.168.7.3  Mask:255.255.255.252
  UP BROADCAST MULTICAST  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

wlan0 Link encap:Ethernet  HWaddr 74:da:38:42:61:dd
  inet6 addr: fe80::76da:38ff:fe42:61dd/64 Scope:Link
  UP BROADCAST RUNNING MULTICAST DYNAMIC  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:58 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:0 (0.0 B)  TX bytes:16845 (16.4 KiB)

root@beaglebone:~#


and the connmanctl

root@beaglebone:~# connmanctl
Error getting VPN connections: The name net.connman.vpn was not provided by 
any .service filesconnmanctlconnmanctl> enable wifi
Error wifi: Already enabled
connmanctl> scan wifi
connmanctl> services

connmanctl> agent on
Agent registered
connmanctl> scan wifi
connmanctl> services

connmanctl> quit
root@beaglebone:~#


disk size seems a bit odd? 144M available?

root@beaglebone:~# df -h
Filesystem  Size  Used Avail Use% Mounted on
udev 10M 0   10M   0% /dev
tmpfs99M  8.4M   91M   9% /run
/dev/mmcblk0p1  3.5G  3.2G  144M  96% /
tmpfs   247M 0  247M   0% /dev/shm
tmpfs   5.0M  4.0K  5.0M   1% /run/lock
tmpfs   247M 0  247M   0% /sys/fs/cgroup
tmpfs50M 0   50M   0% /run/user/1000
tmpfs50M 0   50M   0% /run/user/0
root@beaglebone:~# cat /etc/dogtag
BeagleBoard.org Debian Image 2016-06-19



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[beagleboard] Re: PRU remoteproc Tutorial

[Mark A. Yoder]

I made some progress today.  I modified one of the BeagleScope examples 
(pru_pin_state_reader[1]) to use sprintf() to
send and print debug info to the ARM[2].  One of the things I learned is if 
you use printf() out of the box you will run out of instruction memory.
Instead you have to use the --printf_support=nofloat flag on clpru.  It 
uses a smaller printf library that fits.

I'm beginning to get a feel for what's happening on the PRU side, but the 
ARM is a mystery to me.  I'm sure I can figure out mmap() and read the
shared memory, but I don't think that's the proper way to do it.  Rather I 
think you are supposed to go through the kernel drivers, but I haven't found
any simple examples.

Does anyone know how the ARM side of remoteproc works?

--Mark

[1] 
https://github.com/ZeekHuge/BeagleScope/tree/port_to_4.4.12-ti-r31%2B/examples/firmware_exmples/pru_pin_state_reader
[2] 
https://github.com/MarkAYoder/BeagleBoard-exercises/tree/master/pru/beagleScope/pru_pin_state_reader

On Monday, July 11, 2016 at 2:58:46 PM UTC-4, Mark A. Yoder wrote:
>
> It looks like the new way to talk to the PRUs is via remoteproc and RPMsg. 
>  
>
> Does anyone have pointers to some good tutorials?  Or some good debuggers?
>
> ZeekHuge has a Google Summer of Code project (2016) 
> that has some nice remoteproc 
> examples, and he
> built some nice tools.  
>
> I'm putting together a wiki 
>  that 
> shows how to setup your Bone to run his examples. (
> http://elinux.org/EBC_Exercise_30_PRU_via_remoteproc_and_RPMsg).
> I'm open for additions/corrections so we can have a one stop place for 
> those using the PRUs with remoteproc.
>
> --Mark
>
>
>
>

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[beagleboard] Re: PRU remoteproc Tutorial

[Mark A. Yoder]

Greg:
  Thanks for looking into the Makefile magic.  I was just happy I had 
something working, without really trying to understand it.

--Mark

On Monday, July 11, 2016 at 10:37:49 PM UTC-4, Greg wrote:
>
> I see what he did differently compared to the TI example's Makefiles.  It 
> is a matter of using the -z option with clpru or a distinct command using 
> lnkpru.
>
> How TI does it:
> *$(PRU_CGT)/bin/clpru $(CFLAGS) -z* -i$(PRU_CGT)/lib -i$(PRU_CGT)/include 
> $(LFLAGS) -o $(TARGET) $(OBJECTS) -m$(MAP) $(LINKER_COMMAND_FILE) 
> --library=libc.a $(LIBS)
>
> How the BeagleScope Makefile does it:
> *$(PRU_CGT)/bin/lnkpru* -i$(PRU_CGT)/lib -i$(PRU_CGT)/include $(LFLAGS) 
> -o $@ $^ $(LINKER_COMMAND_FILE) --library=libc.a $(LIBS)
>
> So what BeagleScope is doing is "clpru -z" which is equivalent to the 
> lnkpru command.
>
> So to be able to handle this when it appears in a Makefile, it is indeed 
> good to have the lnkpru link to /usr/bin/lnkpru.
> Makes sense now!
>
> Regards,
> Greg
>
> On Monday, July 11, 2016 at 9:14:48 PM UTC-4, Mark A. Yoder wrote:
>>
>> Greg:
>>   I tried removing the symbolic links and I get the following error when 
>> running make on a BeagleScope example.
>>
>> Invoking: PRU Compiler
>> /usr/share/ti/cgt-pru/bin/clpru 
>> --include_path=/usr/share/ti/cgt-pru/include 
>> --include_path=../../../include --include_path=../../../include/am335x -v3 
>> -O2 --display_error_number --endian=little --hardware_mac=on 
>> --obj_directory=gen --pp_directory=gen -ppd -ppa -fe 
>> gen/PRU_gpioToggle.object PRU_gpioToggle.c
>> make: /usr/share/ti/cgt-pru/bin/clpru: Command not found
>> Makefile:63: recipe for target 'gen/PRU_gpioToggle.object' failed
>>
>> The error goes away when I put the link back.  Maybe the BeagleScope 
>> makefiles aren't set up right.
>>
>> --Mark
>>
>> On Monday, July 11, 2016 at 8:08:40 PM UTC-4, Greg wrote:
>>>
>>> One note on the compiler set-up:
>>>
>>> *ln -s `which lnkpru` .*
>>>
>>> I haven't found a reason to use the lnkpru command.  The linking is done 
>>> with clpru with the -z option.
>>>
>>> Compile and link processes all done with a single command.  The PRU 
>>> compiler manual explains the options reasonably thoroughly.
>>>
>>> Regards,
>>> Greg
>>>
>>

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Re: [beagleboard] BeagleBone Black is not Boot

[Graham]

See:

http://elinux.org/Beagleboard:BeagleBone_Black_Accessories#Serial_Debug_Cables

The serial cable plugs directly into the Beaglebone, and is used to debug 
problems with the unit.

--- Graham

==

On Tuesday, July 12, 2016 at 7:20:16 PM UTC-5, Sangyong Lee wrote:
>
> I can not connect to the console.
>
> LED is operated, but BBB is does not connect.
>
>
>
> 2016년 7월 12일 화요일 오후 5시 41분 26초 UTC+9, Jason Kridner 님의 말:
>>
>> Can you connect a serial cable and capture the console logs?
>>
>> On Tue, Jul 12, 2016 at 3:04 AM Sangyong Lee  wrote:
>>
>>> Hello,
>>>
>>> I'm used the install Ubuntu 13.10 OS on the two Beaglebone Black. 
>>> (Testing the small web server)
>>>
>>> However, when the reboot will not boot. ( Input the "shutdown -r now" 
>>> command after connected the ssh. )
>>>
>>> One device is a all LED is on always, not boot and connect. (Rev A5C)
>>>
>>> The other device is a first LED is Blink always, but not boot and 
>>> connect. (Rev B)
>>>
>>> Apache, php, mysql other than software has not installed.
>>>
>>> Please advice about how to solve this problem. 
>>>
>>>
>>>
>>>
>>>
>>>
>>> -- 
>>> For more options, visit http://beagleboard.org/discuss
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>>>  
>>> 
>>> .
>>> For more options, visit https://groups.google.com/d/optout.
>>>
>>

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Re: [beagleboard] BeagleBone Black is not Boot

[Sangyong Lee]

I can not connect to the console.

LED is operated, but BBB is does not connect.



2016년 7월 12일 화요일 오후 5시 41분 26초 UTC+9, Jason Kridner 님의 말:
>
> Can you connect a serial cable and capture the console logs?
>
> On Tue, Jul 12, 2016 at 3:04 AM Sangyong Lee  > wrote:
>
>> Hello,
>>
>> I'm used the install Ubuntu 13.10 OS on the two Beaglebone Black. 
>> (Testing the small web server)
>>
>> However, when the reboot will not boot. ( Input the "shutdown -r now" 
>> command after connected the ssh. )
>>
>> One device is a all LED is on always, not boot and connect. (Rev A5C)
>>
>> The other device is a first LED is Blink always, but not boot and 
>> connect. (Rev B)
>>
>> Apache, php, mysql other than software has not installed.
>>
>> Please advice about how to solve this problem. 
>>
>>
>>
>>
>>
>>
>> -- 
>> For more options, visit http://beagleboard.org/discuss
>> --- 
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>>  
>> 
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>

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Re: [beagleboard] How can I bring my 'bone completely back to as-delivered status?

[Graham Haddock]

Arnold:

I know you think you asked a simple question, but I don't think things are
actually working they way you think they are, and it could change the
answer.

Where did you get the card?

Is it a copy of something that ran on someone else's Beaglebone, that
already had a compiled version of SoftEther VPN Server on it?

Or, did you actually build/make/compile the copy of SoftEther on the card?

What else is on the card?  A Debian OS?

--- Graham

==

On Sat, Jul 9, 2016 at 9:19 AM, Arnold Podolsky M.D.,J.D. 
wrote:

> Thanks Graham and William. I am not sure what I did right, but it all
> seems to be working as I wish at the moment. I flashed the eMMC with Debian
> Jessie 8.5 and now when I power-up, my Softether VPN server automatically
> runs from my uSD card.
> One newbie question: When I ssh into the BBB, how do I get a list the
> files that are on the uSD card?
> Thanks...Arnie
>
> On Fri, Jul 8, 2016 at 1:19 PM, Graham Haddock 
> wrote:
>
>> Arnie:
>>
>> Simple answer: No.
>>
>> Although it is possible to have the OS running on the eMMC and an
>> application located on the uSD card, I would highly recommend that you do
>> not try to do it that way.  Life will be much easier if you have your
>> application and the OS in the same location.
>>
>> So, choose either the eMMC or the uSD card as the location for the OS and
>> the (SoftEther VPN Server) application.
>>
>> Install the OS and get it running.
>> I highly recommend you have a serial cable on the serial console port for
>> all of this.
>>
>> SoftEther VPN Server for the ARM is provided as source code, so you will
>> need to make sure you have all the prerequisite tools and files installed,
>> then use the "make" procedure provided with the source code to build the
>> application on the target beaglebone.
>>
>> It also includes some self tests to make sure the build works and is
>> compatible with the target hardware.
>>
>> Then you will need to use the command line to start the VPN server.
>>
>> Then, you will need to use either the Windows or Linux console
>> configuration tools to configure the Server.
>>
>> It is possible to write a service.d script to automatically start the VPN
>> server whenever the beaglebone boots, but these files are not provided as
>> part of the Softether distribution.
>>
>> So, I would say that this effort is not for Linux or Beaglebone
>> beginners.  You need to have sort of medium Linux skills to pull it off.
>>
>> It works real well once you get it going.  Both the Beaglebone and the
>> SoftEther VPN Server are extremely stable
>>
>> --- Graham
>>
>> ==
>>
>> On Fri, Jul 8, 2016 at 11:08 AM, William Hermans 
>> wrote:
>>
>>> Thanks William. So I just want to make sure... all I need to do is flash
 the eMMC with Debian Jessie 8.4. Once I do that, it should boot up and
 automatically run my Softether VPN server located on the uSD card?
 Yes?
 Thanks...Arnie

>>>
>>> I have no idea what a *Softether VPN server* *is*. But no, a flasher
>>> image is used for only one purpose. Flashing a working image onto the eMMC.
>>> What's more, the flasher image will also very likely wipe the contents of
>>> the eMMC first.
>>>
>>>
>>> On Tue, Jul 5, 2016 at 12:44 PM,  wrote:
>>>
 This question will reveal what a newbie I am:
 I have seen several posts that say I have to un-comment out a
 particular line in uENV.txt on the SD card. My question is, how do I find
 that file? I don't even know how to get a listing of files and directories
 on the SD card. Help!!?
 Thanks...Arnie

 On Monday, July 4, 2016 at 6:59:28 PM UTC-4, William Hermans wrote:
>
> *On Debian 8 and later, this usually means that you do not have the
>> "boot bit" set on the card.*
>>
>
> No . ..as I said. It means there is an older bootloader on the emmc.
> If you remove the bootloader, said problem goes away.
>
> On Mon, Jul 4, 2016 at 3:33 PM, Graham Haddock 
> wrote:
>
>> It should automatically boot from the card without having to push the
>> boot button.
>> On Debian 8 and later, this usually means that you do not have the
>> "boot bit" set on the card.
>>
>> If you created the card by installing the resident version of Debian,
>> then expanding the partition, the "boot bit" should already be set.
>>
>> If you created the card some other way, then put it in a Linux
>> desktop, and run Gparted. Go into the option-menus and manually set the
>> boot bit.  It should then automatically boot, whenever you apply power to
>> the BBB.
>>
>> There is probably some other way to manually edit the card and set
>> the bit, but I find Gparted very easy to use.
>>
>> I am running a BBG as a SoftEther VPN server and it works fine.  No
>> need to push buttons to get it to boot.
>>
>> --- Graham
>>

[beagleboard] Re: Couldnt open launch http://192.168.7.2/

[Wally Bkg]

Have you rebooted Windows since installing the "USB gadget Ethernet" 
drivers?   Try opening the Start.htm file in the MSDOS drive that gets 
created when you plug in the BBB, and navigating to the BBB webpage from 
that.

What image is on your BBB?  some of them have had errors in the "top level" 
webpages that can be very frustrating when first starting out,  if you are 
following this route to get started.  Oops, just noticed your last comment 
after the screen grab, if it worked on your previous PC,  odds are its a 
driver issue on your new PC.  Try getting the latest Windows drivers from 
Beaglboard.org.



On Tuesday, July 12, 2016 at 8:17:23 AM UTC-5, Sivananda Reddy wrote:
>
> Hi all,
>
> Connected BeagleBone black (rev C) to PC through USB. Its detecting 
> properly & All four LEDS on the board are flashing as expecting. I could 
> Install drivers successfully(followed instructions from GETTING STARTED 
> page of BeagleBone.org).  But when i am trying to open http://192.168.7.2/ 
> in browser its not opening. 
>
> In PCs "Start--> view network connections", i could find that it showing 
> "Network Cable Unplugged" (screen shot attached for reference). Is it 
> problem with the webserver in my linux distribution.  
>
>
> 
>
> Can some one help me to sort out this problem. This is not a problem 
> occuring in regular. Infact till last week it detected properly. I took a 
> short break and now trying to open in a new PC. Its not detecting. 
>
>
> Thank you. 
>
>

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Re: [beagleboard] How to Compile OpenCV 'Hello World'

[Wally Bkg]

And if that doesn't work, make sure the development packages ( libxxx-dev) 
for the open CV libraries are also installed.  Its one of my biggest 
frustrations with Debian/Ubuntu that  installing the library doesn't 
generally install the header files for that library.


On Monday, July 11, 2016 at 11:19:03 PM UTC-5, jdawgaz wrote:
>
>
> On Mon, Jul 11, 2016 at 8:32 PM, Ben Nguyen  > wrote:
>
>> 'pkg-config --cflags --libs opencv'
>
>
>
> try backticks instead of single-quotes like you have
>
>
> --
> Extra Ham Operator: K7AZJ
> Registered Linux User: 275424
> Raspberry Pi and Arduino developer
>
>
> *The most exciting phrase to hear in science - the one that heralds new 
> discoveries - is not "Eureka!" but "That's funny...".*- Isaac. Asimov
>

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Re: [beagleboard] BeagleBoard-Xm not boot

[evilwulfie]

I have used a very good quality 5v 800ma supply with no issues.
I would say that the current is not as important as the quality of the
supply.


On 7/12/2016 7:22 AM, Toan Pham wrote:
>
> ​>> I connected the board to the pc, by the serial cable to usb, using
> the terminal emulator with command: sudo putty /dev/ttyUSB0. (but i do
> not know if because the cable not is crossed or the port disabled)
>
> You should hookup the debug port with a cross over serial cable and
> let us know. 
>
>
>
> >> When it energized by the DC connector to 5V / 1A
>
> Also, you should use a 5V/ 3A power supply.  I have had problems with
> the BB not booting because of the power supply source.
>
>
> TP
>
>
> -- 
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> For more options, visit https://groups.google.com/d/optout.


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Re: [beagleboard] Requesting for the BeagleBoneGreen Wireless Schematics and PCB Design Files

[John Syne]

The Altium Allegro import requires that Allegro PCB be exported in ASCII format.

Regards,
John




> On Jul 11, 2016, at 3:34 PM, Ani  wrote:
> 
> Hello Jason,
> 
> Thank you for the response. I had tried before to import the hardware files 
> into Altium using the files downloaded from this website. I was able to 
> import the schematics but not the PCB files. I was wondering if you could 
> share me the files. It could be of great help!
> 
> I also want to work on the PRUs that are present on the BBG Wireless. There 
> are lot many form posts for BBB but not for BBG Wireless. Is it the same 
> procedures(BBB PRUs procedures) to work on PRUs on BBG Wireless? Could you 
> please help me?
> 
> Thank you for your time,
> Best Regards,
> 
> Aniketh Esamudra Prakash,
> MS, Electrical Engineering,
> The Henry Samueli School of Engineering,
> University of California,Irvine
> Cell: 949-562-8079
> 
> www.linkedin.com/in/ anikethesamudraprakash
> 
> On Mon, Jul 11, 2016 at 12:18 PM, Jason Kridner  > wrote:
> Ani,
> 
> Please check the wiki link at 
> http://www.seeedstudio.com/wiki/Beaglebone_green 
> 
> 
> 
> 
> Seeed used Cadence OrCAD to modify the schematics and Cadence Allegro for the 
> PCB design tool.
> 
> Regards,
> Jason
> 
> On Mon, Jul 11, 2016 at 2:24 PM Ani  > wrote:
> Hello Jason,
> 
> I apologies that I did not CC beagleboard@googlegroups.com 
>  in the email as I did not know about 
> that. I have kept beagleboard@googlegroups.com 
>  in CC now.
> 
> Thank you,
> Best Regards,
> 
> Aniketh Esamudra Prakash,
> MS, Electrical Engineering,
> The Henry Samueli School of Engineering,
> University of California,Irvine
> Cell: 949-562-8079 
> 
> www.linkedin.com/in/ anikethesamudraprakash
> 
> On Mon, Jul 11, 2016 at 10:24 AM, Ani  > wrote:
> Hello Christine,
> 
> Thank you very much for directing me to Jason Kridner. I would be eagerly 
> waiting for the response.
> 
> Thank you for your time,
> Best Regards,
> 
> Aniketh Esamudra Prakash,
> MS, Electrical Engineering,
> The Henry Samueli School of Engineering,
> University of California,Irvine
> Cell: 949-562-8079 
> 
> www.linkedin.com/in/ anikethesamudraprakash
> 
> On Sat, Jul 9, 2016 at 8:03 PM, Christine Long  > wrote:
> Ani,
> 
> I've included Jason Kridner in this email chain as he will be able to assist 
> you with this question. 
> 
> Thanks
> Christine
> 
> 
> 
> Begin forwarded message:
> 
>> From: Ani >
>> Date: July 8, 2016 at 5:37:06 PM EDT
>> To: chri...@beagleboard.org 
>> Subject: Requesting for the BeagleBoneGreen Wireless Schematics and PCB 
>> Design Files
>> 
>> Hello Christine,
>> 
>> I am Aniketh Esamudra Prakash. I completed my MS in Electrical Engineering 
>> from University of California, Irvine.
>> 
>> First of all, I would like to thank you for giving out this wonderful 
>> BeagleBone Green Wireless product to the tech community. 
>> 
>> I was able to open all your previous BeagleBone Series Boards in Altium. 
>> But, now I am trying to open the BeagleBone Green Wireless Schematics & PCB 
>> Files and I am unable to open them in Altium. 
>> 
>> I was curious about the EDA tool which you used to make the BeagleBone Green 
>> Wireless Design. I would also request you for the BeagleBone Green Wireless 
>> Hardware Files so that I could learn more and get the better understanding. 
>> Could you please share me the hardware files?
>>  
>> I would be eagerly waiting for your response.
>> 
>> Thank you for your time,
>> Best Regards,
>> 
>> Aniketh Esamudra Prakash,
>> MS, Electrical Engineering,
>> The Henry Samueli School of Engineering,
>> University of California,Irvine
>> Cell: 949-562-8079 
>> 
>> www.linkedin.com/in/ anikethesamudraprakash
> 
> 
> 
> 
> -- 
> 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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>  
> .
> For more options, 

Re: [beagleboard] BeagleBoard-Xm not boot

[Toan Pham]

​>> I connected the board to the pc, by the serial cable to usb, using the
terminal emulator with command: sudo putty /dev/ttyUSB0. (but i do not know
if because the cable not is crossed or the port disabled)

You should hookup the debug port with a cross over serial cable and let us
know.



>> When it energized by the DC connector to 5V / 1A

Also, you should use a 5V/ 3A power supply.  I have had problems with the
BB not booting because of the power supply source.


TP

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Re: [beagleboard] openwrt | sysupgrade

[Toan Pham]

>>  of course we know that openWRT is not supported by the BBB.

The other way around, you mean?


>> we sure wanna use the sysupgrade on our gateway (openWRT). So is there
anyone who can help us out, and bypass this failure so we can use the
sysupgrade command smooth in future use ?

So, I am assuming that you're running openwrt on the BBB black already.
Have you try it with the --force command parameter?


-TP

​

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Re: [beagleboard] Unknown command 'nand' try 'help'

[Robert Nelson]

On Mon, Jul 11, 2016 at 7:09 AM,  wrote:

> I am going through the book: mastering embedded linux programming
>
> There is a section on U-boot.
> It instructs on how to build the u-boot using the following website:
> ftp://ftp.denx.de/pub/u-boot/
> I used version v2015.07 as suggested by the book then went through the
> process of making
> a u-boot file and MLO file.
>
> It then instructs me to do the following command: nand read 8200
> 40 20
> When I do so that it doesn't understand the command nand. I don't know if
> beaglebone black does not have a nand?
>

In the board's default state there is no NAND present..

there is a cape you can purchase to install nand on the beaglebone..

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] Half-duplex SPI using single data wire

[Ran Shalit]

Hi Jacek,

How did you resolve the 3-wire issue with beagle ?
I don't se ethat the driver supports 3-wire.

Regards,
Ran


On Wednesday, July 17, 2013 at 4:09:26 AM UTC+3, Jacek Radzikowski wrote:
>
> I found in device tree docs SPI property "spi-3wire" which does 
> exactly what I need, but I can't find in spi-omap2-mcspi.c any 
> references to this mode. Has anybody tried to use SPI in 3-wire mode? 
> Did it work? 
>
> thx, 
> j. 
>
>
> On Tue, Jul 16, 2013 at 9:11 AM, Jacek Radzikowski 
>  wrote: 
> > Thanks. But this tutorial only shows how to enable SPI in 3.2 kernel. 
> > I have 4-wire SPI working, I need to configure it in 3-wire mode. 
> > 
> > j. 
> > 
> > 
> > On Tue, Jul 16, 2013 at 7:04 AM, Yiling Cao  > wrote: 
> >> plz follow this guide 
> >> http://communistcode.co.uk/blog/blogPost.php?blogPostID=1 
> >> 
> >> 
> >> I have made various devices working. 
> >> 
> >> 
> >> On Tue, Jul 16, 2013 at 2:52 PM, Jacek Radzikowski 
> >>  wrote: 
> >>> 
> >>> Hello, 
> >>> 
> >>> I want to connect to my beaglebone an LCD display which uses a 3-wire 
> >>> SPI interface: communication in both directions (to and from device) 
> >>> is implemented using only CS, SCK and a single data wire. The data 
> >>> wire is used in half-duplex mode, with direction switched depending 
> >>> whether write or read operation is expected. The SRM says that the SPI 
> >>> interface in the processor supports this mode, but how can I control 
> >>> the direction of the data line from user-space program? Since I can't 
> >>> control pinmuxing, changing pin direction is not possible. Will it be 
> >>> enough just to flip the bit in OE register? 
> >>> 
> >>> Thx, 
> >>> j. 
> >>> 
> >>> 
> >>> -- 
> >>> Given a choice between two theories, take the one which is funnier 
> >>> 
> >>> -- 
> >>> For more options, visit http://beagleboard.org/discuss 
> >>> --- 
> >>> You received this message because you are subscribed to the Google 
> Groups 
> >>> "BeagleBoard" group. 
> >>> To unsubscribe from this group and stop receiving emails from it, send 
> an 
> >>> email to beagleboard...@googlegroups.com . 
> >>> For more options, visit https://groups.google.com/groups/opt_out. 
> >>> 
> >>> 
> >> 
> >> -- 
> >> For more options, visit http://beagleboard.org/discuss 
> >> --- 
> >> You received this message because you are subscribed to the Google 
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> >> "BeagleBoard" group. 
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> an 
> >> email to beagleboard...@googlegroups.com . 
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> >> 
> >> 
> > 
> > 
> > 
> > -- 
> > Given a choice between two theories, take the one which is funnier 
>
>
>
> -- 
> Given a choice between two theories, take the one which is funnier 
>

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[beagleboard] Couldnt open launch http://192.168.7.2/

[nanduksrmce]

Hi all,

Connected BeagleBone black (rev C) to PC through USB. Its detecting 
properly & All four LEDS on the board are flashing as expecting. I could 
Install drivers successfully(followed instructions from GETTING STARTED 
page of BeagleBone.org).  But when i am trying to open http://192.168.7.2/ 
in browser its not opening. 

In PCs "Start--> view network connections", i could find that it showing 
"Network Cable Unplugged" (screen shot attached for reference). Is it 
problem with the webserver in my linux distribution.  



Can some one help me to sort out this problem. This is not a problem 
occuring in regular. Infact till last week it detected properly. I took a 
short break and now trying to open in a new PC. Its not detecting. 


Thank you. 

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[beagleboard] Re: Requesting for the BeagleBoneGreen Wireless Schematics and PCB Design Files

[Ani]

Hello Jason,

Thank you for the response. I had tried before to import the hardware files
into Altium using the files downloaded from this website. I was able to
import the schematics but not the PCB files. I was wondering if you could
share me the files. It could be of great help!

I also want to work on the PRUs that are present on the BBG Wireless. There
are lot many form posts for BBB but not for BBG Wireless. Is it the same
procedures(BBB PRUs procedures) to work on PRUs on BBG Wireless? Could you
please help me?

Thank you for your time,
Best Regards,

*Aniketh Esamudra Prakash,*
MS, Electrical Engineering,
The Henry Samueli School of Engineering,
University of California,Irvine
Cell: 949-562-8079

www.linkedin.com/in/anikethesamudraprakash

On Mon, Jul 11, 2016 at 12:18 PM, Jason Kridner  wrote:

> Ani,
>
> Please check the wiki link at
> http://www.seeedstudio.com/wiki/Beaglebone_green
>
> [image: pasted1]
>
> Seeed used Cadence OrCAD to modify the schematics and Cadence Allegro for
> the PCB design tool.
>
> Regards,
> Jason
>
> On Mon, Jul 11, 2016 at 2:24 PM Ani  wrote:
>
>> Hello Jason,
>>
>> I apologies that I did not CC beagleboard@googlegroups.com in the email
>> as I did not know about that. I have kept beagleboard@googlegroups.com
>> in CC now.
>>
>> Thank you,
>> Best Regards,
>>
>> *Aniketh Esamudra Prakash,*
>> MS, Electrical Engineering,
>> The Henry Samueli School of Engineering,
>> University of California,Irvine
>> Cell: 949-562-8079
>>
>> www.linkedin.com/in/anikethesamudraprakash
>>
>> On Mon, Jul 11, 2016 at 10:24 AM, Ani  wrote:
>>
>>> Hello Christine,
>>>
>>> Thank you very much for directing me to Jason Kridner. I would be
>>> eagerly waiting for the response.
>>>
>>> Thank you for your time,
>>> Best Regards,
>>>
>>> *Aniketh Esamudra Prakash,*
>>> MS, Electrical Engineering,
>>> The Henry Samueli School of Engineering,
>>> University of California,Irvine
>>> Cell: 949-562-8079
>>>
>>> www.linkedin.com/in/anikethesamudraprakash
>>>
>>> On Sat, Jul 9, 2016 at 8:03 PM, Christine Long 
>>> wrote:
>>>
 Ani,

 I've included Jason Kridner in this email chain as he will be able to
 assist you with this question.

 Thanks
 Christine



 Begin forwarded message:

 *From:* Ani 
 *Date:* July 8, 2016 at 5:37:06 PM EDT
 *To:* chri...@beagleboard.org
 *Subject:* *Requesting for the BeagleBoneGreen Wireless Schematics and
 PCB Design Files*

 Hello Christine,

 I am Aniketh Esamudra Prakash. I completed my MS in Electrical
 Engineering from University of California, Irvine.

 First of all, I would like to thank you for giving out this wonderful
 BeagleBone Green Wireless product to the tech community.

 I was able to open all your previous BeagleBone Series Boards in
 Altium. But, now I am trying to open the BeagleBone Green Wireless
 Schematics & PCB Files and I am unable to open them in Altium.

 I was curious about the EDA tool which you used to make the BeagleBone
 Green Wireless Design. I would also request you for the BeagleBone Green
 Wireless Hardware Files so that I could learn more and get the better
 understanding. Could you please share me the hardware files?

 I would be eagerly waiting for your response.

 Thank you for your time,
 Best Regards,

 *Aniketh Esamudra Prakash,*
 MS, Electrical Engineering,
 The Henry Samueli School of Engineering,
 University of California,Irvine
 Cell: 949-562-8079

 www.linkedin.com/in/anikethesamudraprakash


>>>
>>

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[beagleboard] Re: Ada on the BeagleBone Black

[jmiracy]

My email is jmir...@gmail.com 
I´m master degree student in  Brasil, Amazonas university 
I´ve been installed Xenomai in BBB and ADA. I nee show a Reel time example .
I need You help sir

Thanks a lot in advance

On Tuesday, April 5, 2016 at 2:18:44 PM UTC-4, brent...@gmail.com wrote:
>
> I have been doing some Ada programming on the BeagleBone Black using gnat 
> and gnat-gps from the Debian repository.  One of the things that I've been 
> doing is developing a library of routines to access various bits of the 
> board's I/O.  The source is available at 
> https://github.com/BrentSeidel/BBS-BBB-Ada.git and currently covers the 
> LEDs, GPIO, I2C, PWM, and Analog Inputs.  I don't claim that this is 
> anywhere near production ready, but it might provide some useful examples 
> or information, even if you're not using Ada.
>
> Comments, questions, suggestions are welcome.
>
> Brent
>
>

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[beagleboard] Re: Ada on the BeagleBone Black

[jmiracy]

Hi Mr. Brent how can I Use yous Libs ? 
For example GPIO .  I´ve got a BBB rev.c 
Do you hab=ve any example of how to use GPIO and Analog in ? 
I got compile the main.adb  it´s working nice ! But I don´t know how to use 
GPIO. 

Thanks a lot .!


On Tuesday, April 5, 2016 at 2:18:44 PM UTC-4, brent...@gmail.com wrote:
>
> I have been doing some Ada programming on the BeagleBone Black using gnat 
> and gnat-gps from the Debian repository.  One of the things that I've been 
> doing is developing a library of routines to access various bits of the 
> board's I/O.  The source is available at 
> https://github.com/BrentSeidel/BBS-BBB-Ada.git and currently covers the 
> LEDs, GPIO, I2C, PWM, and Analog Inputs.  I don't claim that this is 
> anywhere near production ready, but it might provide some useful examples 
> or information, even if you're not using Ada.
>
> Comments, questions, suggestions are welcome.
>
> Brent
>
>

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[beagleboard] Re: Requesting for the BeagleBoneGreen Wireless Schematics and PCB Design Files

[Ani]

Hello Jason,

I apologies that I did not CC beagleboard@googlegroups.com in the email as
I did not know about that. I have kept beagleboard@googlegroups.com in CC
now.

Thank you,
Best Regards,

*Aniketh Esamudra Prakash,*
MS, Electrical Engineering,
The Henry Samueli School of Engineering,
University of California,Irvine
Cell: 949-562-8079

www.linkedin.com/in/anikethesamudraprakash

On Mon, Jul 11, 2016 at 10:24 AM, Ani  wrote:

> Hello Christine,
>
> Thank you very much for directing me to Jason Kridner. I would be eagerly
> waiting for the response.
>
> Thank you for your time,
> Best Regards,
>
> *Aniketh Esamudra Prakash,*
> MS, Electrical Engineering,
> The Henry Samueli School of Engineering,
> University of California,Irvine
> Cell: 949-562-8079
>
> www.linkedin.com/in/anikethesamudraprakash
>
> On Sat, Jul 9, 2016 at 8:03 PM, Christine Long 
> wrote:
>
>> Ani,
>>
>> I've included Jason Kridner in this email chain as he will be able to
>> assist you with this question.
>>
>> Thanks
>> Christine
>>
>>
>>
>> Begin forwarded message:
>>
>> *From:* Ani 
>> *Date:* July 8, 2016 at 5:37:06 PM EDT
>> *To:* chri...@beagleboard.org
>> *Subject:* *Requesting for the BeagleBoneGreen Wireless Schematics and
>> PCB Design Files*
>>
>> Hello Christine,
>>
>> I am Aniketh Esamudra Prakash. I completed my MS in Electrical
>> Engineering from University of California, Irvine.
>>
>> First of all, I would like to thank you for giving out this wonderful
>> BeagleBone Green Wireless product to the tech community.
>>
>> I was able to open all your previous BeagleBone Series Boards in Altium.
>> But, now I am trying to open the BeagleBone Green Wireless Schematics & PCB
>> Files and I am unable to open them in Altium.
>>
>> I was curious about the EDA tool which you used to make the BeagleBone
>> Green Wireless Design. I would also request you for the BeagleBone Green
>> Wireless Hardware Files so that I could learn more and get the better
>> understanding. Could you please share me the hardware files?
>>
>> I would be eagerly waiting for your response.
>>
>> Thank you for your time,
>> Best Regards,
>>
>> *Aniketh Esamudra Prakash,*
>> MS, Electrical Engineering,
>> The Henry Samueli School of Engineering,
>> University of California,Irvine
>> Cell: 949-562-8079
>>
>> www.linkedin.com/in/anikethesamudraprakash
>>
>>
>

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[beagleboard] getting error while make in linux on ubuntu bbb

[yoursfriend . in]

  CC  arch/x86/kernel/acpi/apei.o
  CC  arch/x86/kernel/acpi/cstate.o
  LD  arch/x86/kernel/acpi/built-in.o
arch/x86/kernel/acpi/cstate.o: In function `of_changeset_add_property_copy':
/home/rajesh/ownbuilt/bb-kernel/KERNEL/include/linux/of.h:1092: multiple 
definition of `of_changeset_add_property_copy'
arch/x86/kernel/acpi/boot.o:/home/rajesh/ownbuilt/bb-kernel/KERNEL/include/linux/of.h:1092:
 
first defined here
arch/x86/kernel/acpi/cstate.o: In function 
`of_changeset_add_property_string':
/home/rajesh/ownbuilt/bb-kernel/KERNEL/include/linux/of.h:1098: multiple 
definition of `of_changeset_add_property_string'
arch/x86/kernel/acpi/boot.o:/home/rajesh/ownbuilt/bb-kernel/KERNEL/include/linux/of.h:1098:
 
first defined here
scripts/Makefile.build:337: recipe for target 
'arch/x86/kernel/acpi/built-in.o' failed
make[3]: *** [arch/x86/kernel/acpi/built-in.o] Error 1
scripts/Makefile.build:403: recipe for target 'arch/x86/kernel/acpi' failed
make[2]: *** [arch/x86/kernel/acpi] Error 2
scripts/Makefile.build:403: recipe for target 'arch/x86/kernel' failed
make[1]: *** [arch/x86/kernel] Error 2
Makefile:947: recipe for target 'arch/x86' failed
make: *** [arch/x86] Error 2

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[beagleboard] BeagleBoard-Xm not boot

[ing . andres . m . a]

regards.

My BB-Xm, not boot.

previously it operated normally with Ubuntu and of a moment to other, 
stopped working. it is weird!

When it energized by the DC connector to 5V / 1A, in the plaque of BB-Xm 
only it turns on diode 5 (green), constant but not blinks.

I made the following tests:

I changed the adaptor DC.

I supplied voltage to the board for the port mini usb / otg.

I bought a new MicroSd and I installed the operative system Ubuntu as the 
indicates page:
http://elinux.org/BeagleBoardUbuntu#Method_1:_Download_a_Complete_Pre-Configured_Image

I connected the board to the pc, by the serial cable to usb, using the 
terminal emulator with command: sudo putty /dev/ttyUSB0. (but i do not know 
if because the cable not is crossed or the port disabled)

What should I do?

in Colombia there will be a certified site? for maintenance.

I appreciate any cooperation.

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[beagleboard] openwrt | sysupgrade

[johan . maljaars]

Hi there,

we are working on our iOT gateway based on openwrt, we us a beaglebone 
black for this one !

performing an sysupgrade command, we get the "Firmware upgrade is not 
implemented for this platform." failure.

of course we know that openWRT is not supported by the BBB.

we sure wanna use the sysupgrade on our gateway (openWRT). So is there 
anyone who can help us out, and bypass this failure so we can use the 
sysupgrade command smooth in future use ?

thanks a lot!

johan

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Re: [beagleboard] How can I bring my 'bone completely back to as-delivered status?

[Arnold Podolsky M.D.,J.D.]

Thanks Graham and William. I am not sure what I did right, but it all seems
to be working as I wish at the moment. I flashed the eMMC with Debian
Jessie 8.5 and now when I power-up, my Softether VPN server automatically
runs from my uSD card.
One newbie question: When I ssh into the BBB, how do I get a list the files
that are on the uSD card?
Thanks...Arnie

On Fri, Jul 8, 2016 at 1:19 PM, Graham Haddock  wrote:

> Arnie:
>
> Simple answer: No.
>
> Although it is possible to have the OS running on the eMMC and an
> application located on the uSD card, I would highly recommend that you do
> not try to do it that way.  Life will be much easier if you have your
> application and the OS in the same location.
>
> So, choose either the eMMC or the uSD card as the location for the OS and
> the (SoftEther VPN Server) application.
>
> Install the OS and get it running.
> I highly recommend you have a serial cable on the serial console port for
> all of this.
>
> SoftEther VPN Server for the ARM is provided as source code, so you will
> need to make sure you have all the prerequisite tools and files installed,
> then use the "make" procedure provided with the source code to build the
> application on the target beaglebone.
>
> It also includes some self tests to make sure the build works and is
> compatible with the target hardware.
>
> Then you will need to use the command line to start the VPN server.
>
> Then, you will need to use either the Windows or Linux console
> configuration tools to configure the Server.
>
> It is possible to write a service.d script to automatically start the VPN
> server whenever the beaglebone boots, but these files are not provided as
> part of the Softether distribution.
>
> So, I would say that this effort is not for Linux or Beaglebone
> beginners.  You need to have sort of medium Linux skills to pull it off.
>
> It works real well once you get it going.  Both the Beaglebone and the
> SoftEther VPN Server are extremely stable
>
> --- Graham
>
> ==
>
> On Fri, Jul 8, 2016 at 11:08 AM, William Hermans 
> wrote:
>
>> Thanks William. So I just want to make sure... all I need to do is flash
>>> the eMMC with Debian Jessie 8.4. Once I do that, it should boot up and
>>> automatically run my Softether VPN server located on the uSD card?
>>> Yes?
>>> Thanks...Arnie
>>>
>>
>> I have no idea what a *Softether VPN server* *is*. But no, a flasher
>> image is used for only one purpose. Flashing a working image onto the eMMC.
>> What's more, the flasher image will also very likely wipe the contents of
>> the eMMC first.
>>
>>
>> On Tue, Jul 5, 2016 at 12:44 PM,  wrote:
>>
>>> This question will reveal what a newbie I am:
>>> I have seen several posts that say I have to un-comment out a particular
>>> line in uENV.txt on the SD card. My question is, how do I find that file? I
>>> don't even know how to get a listing of files and directories on the SD
>>> card. Help!!?
>>> Thanks...Arnie
>>>
>>> On Monday, July 4, 2016 at 6:59:28 PM UTC-4, William Hermans wrote:

 *On Debian 8 and later, this usually means that you do not have the
> "boot bit" set on the card.*
>

 No . ..as I said. It means there is an older bootloader on the emmc. If
 you remove the bootloader, said problem goes away.

 On Mon, Jul 4, 2016 at 3:33 PM, Graham Haddock 
 wrote:

> It should automatically boot from the card without having to push the
> boot button.
> On Debian 8 and later, this usually means that you do not have the
> "boot bit" set on the card.
>
> If you created the card by installing the resident version of Debian,
> then expanding the partition, the "boot bit" should already be set.
>
> If you created the card some other way, then put it in a Linux
> desktop, and run Gparted. Go into the option-menus and manually set the
> boot bit.  It should then automatically boot, whenever you apply power to
> the BBB.
>
> There is probably some other way to manually edit the card and set the
> bit, but I find Gparted very easy to use.
>
> I am running a BBG as a SoftEther VPN server and it works fine.  No
> need to push buttons to get it to boot.
>
> --- Graham
>
> ==
>
> On Mon, Jul 4, 2016 at 4:14 PM, William Hermans 
> wrote:
>
>> > Graham (or anyone who knows):
>> > I use my BBB as a VPN server running Softether. Right now, it is
>> all running from a 16gb uSD card which means that I >have to hold the
>> button every time I power it up.
>> The reason for this is that you have an older bootloader on the emmc.
>> You can change this behavior if you wish. BY two differnt method I
>> personally am aware of.
>>
>> >Can you tell me how to get this all into the eMMC memory? I don't
>> use any >video or GUI but don't know how to eliminate 

[beagleboard] beaglebone black openwrt sysupgrade

[Johan Maljaars]

Hi there,

 

we are working on our iOT gateway based on openwrt, we us a beaglebone black
device for this one !

 

performing an sysupgrade command, we get the "Firmware upgrade is not
implemented for this platform." failure.

 

of course we know that openWRT is not supported by the BBB.

 

we sure wanna use the sysupgrade on our gateway (openWRT). So is there
anyone who can help us out, and bypass this failure so we can use the
sysupgrade command smooth in future use ?

 

thanks a lot!

 

johan

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[beagleboard] Unknown command 'nand' try 'help'

[ashwinibhat1]

I am going through the book: mastering embedded linux programming

There is a section on U-boot.  
It instructs on how to build the u-boot using the following 
website: ftp://ftp.denx.de/pub/u-boot/
I used version v2015.07 as suggested by the book then went through the 
process of making 
a u-boot file and MLO file.

It then instructs me to do the following command: nand read 8200 40 
20
When I do so that it doesn't understand the command nand. I don't know if 
beaglebone black does not have a nand?
I don't see the nand command in the help menu either.  Any help?
Thanks!


Here is the output from ftdi:

 U-Boot SPL 2015.07 (Jul 10 2016 - 15:28:27)
MMC: block number 0x100 exceeds max(0x0)
MMC: block number 0x200 exceeds max(0x0)
*** Error - No Valid Environment Area found
*** Warning - bad CRC, using default environment

reading u-boot.img
reading u-boot.img


U-Boot 2015.07 (Jul 10 2016 - 15:28:27 -0700)

   Watchdog enabled
I2C:   ready
DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - bad CRC, using default environment

Net:not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot:  0 
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
** Unable to read file uEnv.txt **
Failed to mount ext2 filesystem...
** Unrecognized filesystem type **
switch to partitions #0, OK
mmc1(part 0) is current device
SD/MMC found on device 1
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
** Unable to read file uEnv.txt **
** File not found /boot/zImage **
## Error: "nandboot" not defined
U-Boot# nand read 8200 40 20
Unknown command 'nand' - try 'help'
U-Boot# 

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[beagleboard] Wiegand interface, how to grab bits

[denisgottardello]

Hi. I'm using libsoc to manage gpio as inputs for a wiegand interface. 
Sometimes I miss some bits. Can someone suggest me a way to improve my 
wigand grab interface? Is there another library better than libsoc?

Regards.

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Re: [beagleboard] Catch BREAK signal on UART bus.

[marius . marusanici]

as root

On Friday, 8 July 2016 19:15:47 UTC+3, William Hermans wrote:
>
> Are you running this code as root, or a regular user ?
>
> On Fri, Jul 8, 2016 at 7:03 AM,  
> wrote:
>
>> Hello,
>>
>> I'm have connected some device on one of the UART peripherals of the 
>> BeagleBone Black, and now I would like to be able to somehow detect if 
>> there's a "BREAK" sequence present (with some kind of Linux signaling 
>> method).
>>
>> I have tried with this code:
>>
>> #include 
>> #include 
>> #include 
>> #include 
>> #include 
>> #include 
>> #include 
>>
>>
>> #define error_message printf
>>
>>
>> int set_interface_attribs (int fd, int speed, int parity) {
>> struct termios tty;
>>
>> memset (, 0, sizeof tty);
>>
>> if (tcgetattr (fd, ) != 0) {
>> error_message ("error %d from tcgetattr", errno);
>> return -1;
>> }
>>
>>
>> cfsetospeed (, speed);
>> cfsetispeed (, speed);
>>
>>
>> tty.c_cflag = (tty.c_cflag & ~CSIZE) | CS8; // 8-bit chars
>> tty.c_iflag &= IGNBRK; // disable break processing
>> tty.c_lflag = 0;// no signaling chars, no echo,
>> // no canonical processing
>> tty.c_oflag = 0;// no remapping, no delays
>> tty.c_cc[VMIN]  = 0;// read doesn't block
>> tty.c_cc[VTIME] = 5;// 0.5 seconds read timeout
>>
>>
>> tty.c_iflag &= ~(IXON | IXOFF | IXANY); // shut off xon/xoff ctrl
>>
>>
>> tty.c_cflag |= (CLOCAL | CREAD);// ignore modem controls,
>> // enable reading
>> tty.c_cflag &= ~(PARENB | PARODD);  // shut off parity
>> tty.c_cflag |= parity;
>> tty.c_cflag &= ~CSTOPB;
>> tty.c_cflag &= ~CRTSCTS;
>> //tty.c_iflag = ~BRKINT | ~INPCK;
>>
>>
>> if (tcsetattr (fd, TCSANOW, ) != 0) {
>> error_message ("error %d from tcsetattr", errno);
>> return -1;
>> }
>> return 0;
>> }
>>
>> void breakHandler(int signo) {
>> printf("\n\nCATCHED!!!\n\n");
>> }
>>
>>
>> int main() {
>>
>>
>>  char *portname = "/dev/ttyO5";
>>
>>
>>  int fd = open (portname, O_NOCTTY);
>>
>>  if (fd < 0) {
>>  error_message ("error %d opening %s: %s", errno, portname, strerror 
>> (errno));
>>  return;
>>  }
>>
>>
>>  set_interface_attribs (fd, B19200, 0);  // set speed to 192,000 bps, 
>> 8n1 (no parity)
>>
>>  char buf [100];
>>
>>
>>  if (signal(SIGINT, breakHandler) == SIG_ERR) {
>>  printf("\n\nCan't catch SIGINT!\n\n");
>>  }
>>
>>
>>  fcntl(fd, F_SETOWN, getpid());
>>
>>
>>  struct sigaction saio; /* definition of signal action */
>>
>>  saio.sa_handler = breakHandler;
>>  saio.sa_flags = 0;
>>  saio.sa_restorer = NULL;
>>
>>  sigaction(SIGINT, , NULL);
>>
>>
>>  while(1) {
>>  int n = read (fd, buf, sizeof buf);  // read up to 100 characters 
>> if ready to read
>>  usleep ((95 + 25) * 100);
>>  printf("\n I read:\n");
>>
>>
>>  int i;
>>
>>  for(i = 0; i < n; i++) {
>>  printf("%#08x ", buf[i]);
>>  }
>>
>>
>>  printf("\nError: %s\n", strerror(errno));
>>  }
>>
>>  return 0;
>> }
>>
>> But it seems that it's not working, the signal is only triggered when I 
>> press CTRL+C on my keyboard.
>>
>> What should be the problem?
>>
>> Thanks.
>>
>> -- 
>> For more options, visit http://beagleboard.org/discuss
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>>  
>> 
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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[beagleboard] Updating Kernel

[Ratan Yadav]

Hi all ,

I have provided this thread earlier during that interaction ,Robert Nelson 
replied that DTB was missing .

So I tried with inclusion of DTB as well but result I got was same .

It was getting hanged at "Starting Kernel "  

Please do have compete log for same as below .


U-Boot# setenv ipaddr 192.168.1.7
U-Boot# setenv serverip 192.168.1.5
U-Boot# tftpboot 0x80F8 am335x-boneblack.dtb
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.5; our IP address is 192.168.1.7
Filename 'am335x-boneblack.dtb'.
Load address: 0x80f8
Loading: T 
 9.8 KiB/s
done
Bytes transferred = 58133 (e315 hex)
U-Boot# tftpboot 0x80007fc0 uImage-BBB
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.5; our IP address is 192.168.1.7
Filename 'uImage-BBB'.
Load address: 0x80007fc0
Loading: T 
TFTP error: 'File not found' (1)
Not retrying...
U-Boot# tftpboot 0x80007FC0 uImage-BBB
link up on port 0, speed 100, full duplex
Using cpsw device
TFTP from server 192.168.1.5; our IP address is 192.168.1.7
Filename 'uImage-BBB'.
Load address: 0x80007fc0
Loading: T #
 #
 #
 #
 #
 #
 #
 #
 #
 307.6 KiB/s
done
Bytes transferred = 7810336 (772d20 hex)
U-Boot# setenv bootags console=ttyO0,115200n8 root=/dev/mmcblk0p2 ro 
rootfstype=ext4 rootwait 
U-Boot# bootm 0x80007fc0 - 0x80f8
## Booting kernel from Legacy Image at 80007fc0 ...
   Image Name:   Linux-4.1.24+
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:7810272 Bytes = 7.4 MiB
   Load Address: 80008000
   Entry Point:  80008000
   Verifying Checksum ... OK
## Flattened Device Tree blob at 80f8
   Booting using the fdt blob at 0x80f8
   XIP Kernel Image ... OK
OK
   Using Device Tree in place at 80f8, end 80f91314

Starting kernel ...





Thank you for your kind support . 

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Re: [beagleboard] BeagleBone Black is not Boot

[Jason Kridner]

Can you connect a serial cable and capture the console logs?

On Tue, Jul 12, 2016 at 3:04 AM Sangyong Lee  wrote:

> Hello,
>
> I'm used the install Ubuntu 13.10 OS on the two Beaglebone Black. (Testing
> the small web server)
>
> However, when the reboot will not boot. ( Input the "shutdown -r now"
> command after connected the ssh. )
>
> One device is a all LED is on always, not boot and connect. (Rev A5C)
>
> The other device is a first LED is Blink always, but not boot and connect.
> (Rev B)
>
> Apache, php, mysql other than software has not installed.
>
> Please advice about how to solve this problem.
>
>
>
>
>
>
> --
> For more options, visit http://beagleboard.org/discuss
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> 
> .
> For more options, visit https://groups.google.com/d/optout.
>

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