If you want one 'thing' to talk to a bunch of 'things', or a bunch of
'things' to all talk to each other, you should read up on that mysterious
CAN stuff. That is exactly what it was designed for.
On Monday, January 30, 2017 at 1:16:41 PM UTC-8, woody stanford wrote:
>
> The answer I was
Depending on how things are set up, you may need to run not "my_xxx.exe",
but "mono my_xxx.exe".
On Wednesday, October 26, 2016 at 10:28:19 AM UTC-7, Dror Lugasi wrote:
>
> Hello guys..
> I have a code i wrote in monodevelop and i have the program .exe file that
> i want to run after the
As a probably better alternative to sudo, you may want to look at
'capabilities', which will allow your code permission for specific actions
and against specific object, rather than being root.
http://www.linux-tutorial.info/modules.php?name=ManPage=7=capabilities
No chance it's something as simple as a flaky cable? Worth trying a
different one...
On Monday, August 8, 2016 at 11:25:52 PM UTC-7, William Hermans wrote:
>
> Thank you guys! I will update the kernel next week and see if it works, if
>> not I'll try to find a power supply.
>>
>> Also, I tried
I'm not a Python developer either, 'though I know it is very popular of
late. Does it say something about Python itself that it did not throw up a
big error in your face when the quotes were omitted? Or is the problem
elsewhere?
On Wednesday, April 6, 2016 at 11:24:18 AM UTC-7, John Baker
.
Written by Roland McGrath and Ulrich Drepper
But at this point I don't care too much, it's now merely academic curiosity
and is not getting in the way of getting anything done.
On Tuesday, February 23, 2016 at 2:33:41 PM UTC-8, Peter Hurley wrote:
>
> On 02/23/2016 01:15 PM, mickeyf wrote:
in
use, i.e. libc6.7. Or maybe more likely, libc6 is actually a link to
libc6.x, and that's what ldd is reporting? Pure speculation, tho'. I'd live
to hear to the real story.
On Tuesday, February 23, 2016 at 11:41:30 AM UTC-8, Peter Hurley wrote:
>
> On 02/23/2016 10:47 AM, mickeyf
Bingo! 'dpkg-query --show libc6 ' does show 6.7.
Curious why ldd does not.
Thanks!
On Tuesday, February 23, 2016 at 10:33:30 AM UTC-8, Peter Hurley wrote:
>
> On 02/23/2016 10:14 AM, mickeyf wrote:
> > So if I updated today, that should be what I get. But as I said, what I
&g
We have a number of BBB that are running Ubuntu 14.04. Everything I've
found on this bug/patch indicates that 'ldd --version' should show the
vulnerable version of libc as 2.19-0ubuntu6.6, and the patched one as
2.19-0ubuntu6.7. Both before and after running 'apt-get install libc6' all
I see
Less than ideal, but can't you take shorter headers and put them
end-to-end? (Ok for a few, if not for serious production...)
On Tuesday, February 16, 2016 at 7:03:26 AM UTC-8, Taceant Omnes wrote:
>
> I could use a 46 position female stackable header to make some
> distance between the BBB and
There may be a quick and dirty shortcut to avoid going down the "gotta
learn the low-level details of usb" rabbit hole. You can use a usb gadget
to make the mini usb port appear as a serial port to your BBB software.
Took about 2 lines of bash if I recall. Sorry, I don't have the details
handy
My ignorance of this stuff is very nearly 100%, but why does "Issues found
: 0" equate to 'Only' "Overall Health Rating 89.9%" ?
Also, how do they get :
"Latency Time (Read) : 0 ns"
"Latency Time (Write): 0 ns"
...unless this was programmed by the "rogue
We have only used the one speed which our other devices expect, but that
has worked correctly with a couple of dozen BBBs, "since forever".
On Friday, October 30, 2015 at 11:48:28 AM UTC-7, Glenn Cutler wrote:
>
> I'm using DCAN0 on the Beaglebone Black to communicate with other devices
> on a
I have not tried any of this or searched for the old post, but I vaguely
recall there being a post about this long ago, and that it was not
automatically recognized but had to be mounted manually?
On Tuesday, October 27, 2015 at 10:25:49 PM UTC-7, Luke Shields wrote:
>
> you ever solve this?
The way we do this is as follows:
The BBB is monitoring processes and sending data via json to a web server,
where it is displayed.
The BBB is behind a firewall, so it must be the one to initiate the
communication. The BBB ultimately is the boss here, not the server.
When there is no data
Yes, I just tried this. Updated /etc/apt/sources.list to make sure the
Debian repositories were listed (had Ubuntu installed), but it still failed
to locate the package.
On Tuesday, June 23, 2015 at 10:33:47 PM UTC-7, Adam Weiss wrote:
One last question.
I can't seem to get Jessie.
From my
Have not delved into it yet, but it looks like libusbg might be what we are
looking for.
On Monday, June 22, 2015 at 7:56:38 AM UTC-7, GeerGuy wrote:
I would like to do the exact same thing, but I can't find any information
on doing this. I assume that you would have to make some changes to
I want to be able to send data from a BB out the USB port to a (Windows)
PC. Windows recognizes the BB as a mass storage device. I want to send a
stream. I have been using BB Black for a while, but am new to programming
for USB, and am not sure what the most straightforward approach would be
We have used many dozens here with never a problem. All official Beagles,
not Element 14 or other clones, it that matters.
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My preference is ethernet/ssh, but one more option is hdmi out and direct
keyboard to the usb.
On Monday, February 23, 2015 at 7:33:46 AM UTC-8, ranandar...@gmail.com
wrote:
Long time embedded developer, first time with Beagle Board Black.
How do I get the serial Linux command line like
Being a software guy I tend to be quick to use a sledgehammer, but if push
came to shove would a buffer before the comparator screw things up?
On Monday, January 19, 2015 at 5:10:36 PM UTC-8, maxmike wrote:
I have the output of an op amp go directly to the BBB adc and the values
are read
2. If something happened to the BBB and somehow (im just thinking worst
case scenario) the BBB is not bootable (hardware still in working order
though) either during a drill or actual emergency, is there a way to get it
up and running QUICK? I'm thinking like a second (backup) SD card or an
This is not something I've looked at for many years, but I assume most
manufactuers of microprocessors and other chips still typically publish a
'reference design' which is a basic board utilizing their chip, and with
documentation explaining its features. This is a good place to start - you
We use the MAC address, as suggested by Christian. Works for us.
On Wednesday, September 24, 2014 1:46:38 AM UTC-7, Laurent d'Havé wrote:
Hello
For a project we have a couple of BBB. We have ordered them from Element14
.
The problem we have is that the 32kb eeprom is EXACTLY the same for
This does not tell us strictly speaking if the canbus itself has issues,
but we have a heartbeat device on the canbus. If we fail to hear from it
(or any other traffic) for a set period of time, we reset the canbus as you
described. In practice I've only seen this reset trigger when I've
doesn't support?
Doesn't come pre-installed, perhaps. What's not to support?
On Wednesday, September 10, 2014 7:08:48 AM UTC-7, Peter Gregory wrote:
What version of Ubuntu are you running?
I believe 14.04 doesn't support mono.
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/configuration changers that need to be
done.
I am using mono 3.2.8 hard float.
Highly appreciated if you can provide any support.
thank you.
On Wednesday, January 9, 2013 4:50:44 PM UTC+1, mickeyf wrote:
We are also using mono, on RCN's Ubuntu build for Beagle Bone. This was
specifically because
USB and Serial are both more (cable) length limited than ethernet. If you
have it on a private network I'd just use ssh.
Here's the approach we use access over the Internet rather than on a
private LAN:
1) BBB periodically sends a message (json, https) to a web server, asking
if the server
What do you need / are you looking for exactly?
You can certainly use the regular file system access to manipulate the
GPIO, the serial ports, etc. This works fine. If you need access that is
more direct than this, or higher performance, you'll probably have to
develop it yourself. I don't
What pitfalls should I watch out for that could cause the system to hang or
malfunction?
Not what can go wrong, but one approach to dealing with it if it does:
Our system has safety implications if it should fail. It accepts messages
from canbus devices, outputs to a paging transmitter and to
I am trying to debug some network issues on a BBB re traffic between the
BBB and a web server. This BBB has is also using a canbus with the
socketcan interface. I don't have experience with these tools, but I
thought wireshark might help, and that I could use tcpdump on the BBB to
feed it.
Thanks - I did not know about that one.
I have experimented with the compression flags on 7za, and found that -mx=3
reduces the compression (in my tests, anyway) less than 10% of the -mx=9 I
had been using, and does not (so far!) error out in the same way.
I will look at miniz also.
--
My BBB application zips things up every 24 hours and copies them to a
server. I'm finding that 7za starts reporting Can't allocate required
memory after a day or two. Apparently 7Za is more demanding of memory than
some other compression programs. There are only a couple dozen of files. (I
This won't work for everyone, but we power our cape and let the cape power
the BBB. This way the only limitations are those we design into our cape.
On Tuesday, May 6, 2014 3:55:47 AM UTC-7, Satz Klauer wrote:
Hi,
assumed the power supply is not the bottleneck: what is the maximum
current
Will the power for the Canbus be supplied independently, and will the BBB
need to control or manage that in any way? Depending on what is on the
Canbus it may be more demanding of power than the BBB.
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My first guess would be that Windows is not able to read the Linux file
system, and that it recognizes the uboot part because it is FAT, which can
be read by both Windows and Linux. I don't know if there are any utilities
that allow Windows to read foreign (non-Windows) file systems, but that
tried in ubuntu and since it runs slow, I just switched back
How much slower was Ubuntu compared to Debian?
And do you have any insights as to what the issues/differences were?
Thanks
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What Gerald is saying is that in general you should not expect to drive an
LED directly - you will want to drive a transistor which can then supply
perhaps 20 ma or more to your LED and at the correct voltage. Perhaps you
are already doing this, but you didn't say.
I don't know anything about
Try:
https://github.com/alexrp/mono/tree/armhf
With build instructions here:
https://github.com/alexrp/mono/tree/armhf
We are using this with RCN's Ubuntu. Last built it many months ago though
and are considering that version stable for our purposes, so can't speak
to any recent changes or
Using RCN's 13.10
I know there was some discussion of related issues quite a while ago, but
I'm not finding an answer. The servers listed are all the ones in
/etc/ntp.conf.
Unless I set the date manually the BBB thinks it's Feb. after any reboot.
What might I be missing?
From syslog:
Feb
ntpdate-debian behaves the same way. Specifying a server on the command
line does not work either.
On Tuesday, March 25, 2014 11:12:04 AM UTC-7, mickeyf wrote:
Using RCN's 13.10
I know there was some discussion of related issues quite a while ago, but
I'm not finding an answer. The servers
socket. I think this
issue have been discussed in the past and I can probably find the answer
with enough googling, but if someone wants to share the recipe that would
be great.
On Tuesday, March 25, 2014 11:12:04 AM UTC-7, mickeyf wrote:
Using RCN's 13.10
I know there was some discussion
Adding the ip of the domain time server at the top of the ntp.conf server
list was sufficient. All working now.
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Someone with greater knowledge may know different, but I suspect you will
be breaking the USB spec if you do this. Power is part of what is expected
on those connectors. However, if all you are using the USB connector for is
power (like a phone charger) there is probably no real downside.
I
I may have spoken hastily. See section 6.11.1 in the SRM.
On Sunday, March 23, 2014 12:37:12 AM UTC-7, Patrick Walters wrote:
uname -a
Linux beaglebone 3.8.13 #1 SMP Thu Sep 12 10:27:06 CEST 2013 armv7l
GNU/Linux
Is it possible to control the power to the USB port on the board or a HUB
On Monday, March 3, 2014 7:37:07 AM UTC-8, narr...@gmail.com wrote:
About a month ago I disabled the 192.168.2.7 USB login. I forgot the file
I edited to do this. I am trying to get back to being able to ssh over USB
again. Anyone know the file I edited?
Try :
Building a mono program on a Windows (or other) box then running it on the
BBB is trivial, except that there are a few pieces of Mono that are not
automatically supported on the ARM. Hard float being the one we ran into
and had to recompile Mono with a patch.
If you are talking about actually
The page linked to says, in Bright Red Letters *Note: Hardware
incompatible and will damage BeagleBone Black if used together.*
Mind you, they don't offer details
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Speculating? Isn't this pretty easy to test?
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I have not yet gotten parse-edid to work at all, and this is preliminary
research - I don't have a BBB on my desk yet, just a BBwhite. But yes, an
ounce of experimentation can be worth a pound of theory and I'll certainly
see what results I get by testing.
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Yes, but...
Is there a reliable, guaranteed way to see if a given device display is
actually powered on?
Is it practical to say, boot using an LCD, check for the presence of an
HDMI display, then switch to the HDMI output under user control?
Thanks!
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Even being able to know if an HDMI device was connected and powered on
would be very helpful. On one of the many posts here discussing HDMI it was
mentioned that per spec you should be able to read the EDID even with the
device powered off (but maybe they meant in standby?), but in practice it
Yes, I was definitely getting the impression that without signing up for
the $15K fee I could not view a legal copy of the spec. If I can find a
monitor or two that work with the BBB and that have known behavior that's
plenty good enough. Section 8.5 Hot plug detect.does not indicate
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