[beagleboard] Re: wifi configuration on beaglebone black.

[Mala Dies]

Hello,

You might have to update the firmware on your WiFi dongle.

Seth

On Wednesday, August 9, 2017 at 1:08:28 AM UTC-5, Madhu K wrote:
>
> Hi All,
>
> I was trying to configure wifi on beaglebone black board. But i am facing 
> below problems.
>
> I am using TP-LINK TL-WN823N adaptor.
>
> Beaglebone black wifi setup steps :
>
> 1) Downloaded the stable kernel 4.4.2 from git.
> 2) Compiled the kernel and loaded new kernel to beaglebone black.
> 3) Downloaded the rlt8192eu ( TL-WN823N ) driver code from git.
> 4) Compiled the driver code for beaglebone black and inserted the module 
> to new kernel.
> 5) Inserted TL-WN823N adapter to beaglebone black.
>
> Problems :
>
> 1) I am getting below messages, i don't know what exactly that message 
> indicates.
>
> [  361.376724] RTL871X: Wrong rate section: (CCK,2T)
> [  361.381816] RTL871X: Wrong rate section: (CCK,2T)
>
>
>
> [  361.810547] RTL871X: duplicate tx power limit combination [band 
> 2.4G][regulation ETSI][bw 20M][rate section HT][rf path 2T][chnl 01]
> [  361.823118] RTL871X: duplicate tx power limit combination [band 
> 2.4G][regulation MKK][bw 20M][rate section HT][rf path 2T][chnl 01]
> [  361.835593] RTL871X: duplicate tx power limit combination [band 
> 2.4G][regulation FCC][bw 20M][rate section HT][rf path 2T][chnl 02]
>
>
> 2) I could see the wlan0 in ifconfig. but there no ip for wlano. I executed 
> sudo ifup wlan0 command and i am getting below messages.
>
>
> DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 3 (xid=0x1e59e38c)
> [  840.120795] RTL871X: nolinked power save enter
> DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6 (xid=0x1e59e38c)
> [  846.819487] RTL871X: nolinked power save leave
> DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 19 (xid=0x1e59e38c)
> [  848.471030] RTL871X: nolinked power save enter
> [  855.165440] RTL871X: nolinked power save leave
> [  856.821011] RTL871X: nolinked power save enter
>
>
> please help to resolve these issue.
>
>
> Thanks and regards,
>
> Madhu
>
>

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[beagleboard] RE: Cheat Sheets for Linux/Seth

[Mala Dies]

Hello,

I was researching Linux "cheat sheets." I found this one, very-detailed 
sheet online: http://cb.vu/unixtoolbox.xhtml.

Enjoy...

Seth

P.S. I have been reading it to test out the capabilities of our Debian 
distro on the BBB. Yea boy!

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Re: [beagleboard] "no display name and no $display environment variable"

[Harke Smits]

Hello Przemek,

Thanks for your reaction. I am by no means an expert so I may have the
terminology wrong. I have a stand alone Beagleboard system, keyboard/mouse
connected via usb dongle. The system starts up normally, in grafics mode, I
can invoke internet, no problem, LAN connected. Going to XTerm I get the
linux prompt, still in grafics mode. A simple TKInter test program works.
Going to linux (XTRL/ALT/F1) I can invoke startx that brings me back were I
came from: the grafics environment (LXDE). Starting the TKInter test
program from the Linux prompt gives me the famous error message in the
title. In Xterminal "echo $DISPLAY" renders :1, in plain linux: a blank
line.  Starting my application in XTerm gives a fully blank screen.
Still very puzzling...
I hope you or someone else can bring me further.
Kind regards,
Harke

On 11 August 2017 at 15:26, Przemek Klosowski 
wrote:

>
>
> On Fri, Aug 11, 2017 at 6:33 AM, Harke Smits  wrote:
>
>> Hello Learned group,
>>
>> I have a BBB with Debian version 2017-03-19, the latest release as far as
>> I know, with a 4D systems display. I have made a Python script using
>> TkInter, running fine on another BBB system with an older Debian version.
>>
> OK, so you are interacting with your BBB directly, not from another
> computer via SSH or serial, right?
>
>
>> I made a simple testscript using TkInter as well. Running the testscript
>> form XTerm or UXTerm (what is the difference?) works: a simple window pops
>> up.
>> Running the same from Debian bash directly displays the well known error
>> above. I googled a lot but no answer found yet.
>>
> What do you mean by 'from the debian bash'? Normally, you're sitting in
> front of a graphical desktop (i.e. running the X server or Wayland)
> displaying a terminal emulator (e.g. XTerm) that runs a shell (e.g. bash).
> The shell command (e.g. xclock) starts the process that issues X11 commands
> that go to the current $DISPLAY and show up as windows.
> If you're not running the X server, i.e. sitting at the raw text terminal
> console (all black screen with white text), you cannot and will  not see
> graphics.
>
> The older system with similar software runs fine from autostart. Maybe I
>> need to do here as well? I can not find autostart in the lastest Debian
>> version: it must be in a different directory that I know of.
>> Finally: if I run the original script (running fine on the older system)
>> I just get a blank screen and system halts.
>>
> If you want to use your system in graphics mode you should autostart X.
> Usually it is done by asking it to go to the graphical run state (5 in the
> old sysV init scripts, graphical.target in systemd)
> For debugging, you can type 'startx' to start X manually.
>
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[beagleboard] Re: Beaglelogic with Linux beaglebone 4.9.36-ti-r46 #1

[DLF]

Hi - just to report back, I've sorted this out and the 4.9.36-ti-r46 #1 
release is working with Beaglelogic.

it turns out I had some old crap in my bootloader that was not zero'd out 
properly.

cheers,
GL


On Friday, 11 August 2017 15:26:46 UTC+2, DLF wrote:
>
> Hello,
>
> Is anyone with a Beaglelogic using the 4.9.36-ti-r46 #1 ?.   
>
> I've followed the instructions/image from Abishek on 
> https://beaglelogic.readthedocs.io/en/latest/index.html but I can't get 
> it to work.
>
> Following the troubleshooting section on the "readthedocs" site everything 
> checks out okay also.  As far a I can tell the pins are not being Mux'd at 
> all, but I don't know where to go next(novice user) .  I've zero'd my emmc 
> so I'm sure I'm running from the SD card.
>
> I've been successful with an older version 
> (bone-debian-8.4-lxqt-4gb-armhf-2016-04-10-4gb.img) but would like to 
> upgrade.
>
> I don't mind to raise an issue for Abishek in git but I just wanted to see 
> if there is something else to try beforehand or if someone can confirm it 
> is working.
>
> I've made a posting over on the Beaglelogic group but it is a little 
> lonely over there...
>
> https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!forum/beaglelogic
>
> cheers,
> GL
>
>
>
>

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Re: [beagleboard] RE: Cheat Sheets for Linux/Seth

[Seppo Nikkilä]

Thanks Seth, very useful, indeed!

siñ


Virus-free.
www.avg.com

<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

On Sat, Aug 12, 2017 at 11:07 AM, Mala Dies  wrote:

> Hello,
>
> I was researching Linux "cheat sheets." I found this one, very-detailed
> sheet online: http://cb.vu/unixtoolbox.xhtml.
>
> Enjoy...
>
> Seth
>
> P.S. I have been reading it to test out the capabilities of our Debian
> distro on the BBB. Yea boy!
>
> --
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Developing next generation wireless audio

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[beagleboard] hotplug sd-card

[Fohnbit]

Hello

I want to use the free sd-card for storage.

I boot with eMMC, so the sd-card is free

I mount the card at startup with fstab:
/dev/mmcblk0p1 /media/card auto auto,rw,async,user,nofail 0 0


But when I remove the sd-card and insert again, the mount is broken?

How can i setup a hit plug function?

When a sd card is inserted, it sould mount to /media/card

Thank you!

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[beagleboard] Re: hotplug sd-card

[Denis Cosmin]

I think you can use UDEV to mount the SD card automatically.

On Saturday, August 12, 2017 at 3:06:58 PM UTC+3, Fohnbit wrote:
>
> Hello
>
> I want to use the free sd-card for storage.
>
> I boot with eMMC, so the sd-card is free
>
> I mount the card at startup with fstab:
> /dev/mmcblk0p1 /media/card auto auto,rw,async,user,nofail 0 0
>
>
> But when I remove the sd-card and insert again, the mount is broken?
>
> How can i setup a hit plug function?
>
> When a sd card is inserted, it sould mount to /media/card
>
> Thank you!
>

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[beagleboard] Re: hotplug sd-card

[Fohnbit]

Hello Denis,

may you have a example? I don´t know how it should work.

Thank you!

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Re: [beagleboard] Re: Last hours for Arrow's 20% off sale and X15's in stock at Digi-Key

[Robert Nelson]

Jeff, give this image a quick test:

https://rcn-ee.net/rootfs/2017-08-11/microsd/bbx15-debian-9.1-console-armhf-2017-08-11-2gb.img.xz

Regards,

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

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[beagleboard] Re: JTAG Debugging - 2 Code Composers on the Same Machine - One under Ubuntu - The Other under Windows

[RaulRathmann]

I have experience with various C6x DSP EVM and custom boards, but I've 
never worked with a Sitara board.

What is driving the need to use Linux in the development/debug workflow? Is 
it development on the ARM portion, or development on the C6x DSP? Or both?

I recently ordered the Beagleboard x15 (just got a batch at Digikey of the 
Rev C's get 'em while they're hot), so I'll be tackling a similar situation 
soon. I was figuring that since CCS can run on Windows it would cover at 
least the DSP part of development. Then for any Linux part, I could use 
Visual Studio '17 with the Linux dev/debug support (just need SSH and 
compiler on target).

I'm not against working in Linux per se, and I definitely don't mind 
targeting Linux for embedded work, but I have my main dev gear running 
Windows and I don't want to lug around extra gear.

Raul

 

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[beagleboard] Re: Python program using PWM Not Working at Autostart

[Tomas Medina]

Sorry for the late reply, Seth. I reflashed one of my bones with the 
2017-03-19 image. I really dislike using cloud9 and I prefer Putty since it 
allows me to talk to the bone more directly. When I used cron, the led 
shines briefly and then stops, which it shouldn't do. Here's a link to the 
tutorial I followed: 
https://billwaa.wordpress.com/2014/10/03/beaglebone-black-launch-python-script-at-boot-like-arduino-sketch/

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[beagleboard] RE: Making uEnv.txt Suit My Needs and Running Software/How Do I Put 'bonescript' in My Path...

[Mala Dies]

Hello,

As many of us already know, I am working with the TMP36 and failing harder 
than ever for some reason on my BBB. I just noticed my error code for the 
software. It is stating that the BBB cannot find the 'bonescript' language 
that I am invoking. 

Seth

P.S. How can I put the 'bonescript' language in my PATH so when I run the 
.js file, 'bonescript' is "noticed" and can be used? I am working directly 
in the /home/debian directory. Send guidance or assistance, i.e. either/or. 

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