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<div class="moz-cite-prefix">Hello,<br>
<br>
A friend was having issues with his BBB and ordered a shorter USB
to URI cable. And problem went away. The URI USB cable is a bit
long and a shorter cable is better to avoid EMI interference from
the radio. <br>
<br>
<br>
On 8/13/2014 3:31 PM, Doug Crompton wrote:<br>
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<div dir="ltr"><font style="" face="Tahoma">Yes this can be an
issue and is usually caused by EMI either from an RF source or
a switching power supply. An HF station or other high RF
source can definitely cause it and this is not specific to the
BBB it also happens on a PC. Ferrites over the USB and radio
leads often solves the problem. Also keep leads short and wind
extra length in tight circles. The power supply problems
cannot be solved by ferrites and is often caused by bad wall
warts that have high common mode voltages. This couples
through the BBB over the USB cable to a radio ground. You can
check this with a scope. A fix would be to run the BBB from a
linear supply or from your radio 12V supply with a 1A three
terminal 5V regulator on a heat sink.<br>
<br>
I have about 6-8 BBB's running and I have not had the issue in
general running although I can reproduce it. I do put ferrites
on my leads and I use power supplies that do not have high
common mode voltages.<br>
<br>
Now the good news - We are working on a new version with much
improved USB recovery support in a new kernel. It will now
recover from USB problems completely in usbradio. In our tests
you can pull the USB cable out and put it back in hot and it
will recover. We are still working on getting the same results
with simpleusb which is the recommended mode for the BBB. So
try the above fixes and if you are still having problems rest
assured there is a real fix in the future.<br id="FontBreak">
</font><br>
<b><font style="font-size:16pt;" size="4">73 Doug</font><font
style="font-size:16pt;" size="4"><br>
</font><font style="font-size:16pt;" size="4">WA3DSP</font><font
style="font-size:16pt;" size="4"><br>
</font><font style="font-size:16pt;" size="4"><a class="moz-txt-link-freetext" href="http://www.crompton.com/hamradio">http://www.crompton.com/hamradio</a></font></b><font
style="font-size:16pt;" size="4"><br>
</font><br>
<br>
<div>
<hr id="stopSpelling">Date: Wed, 13 Aug 2014 12:43:43 -0500<br>
From: <a class="moz-txt-link-abbreviated" href="mailto:nx4y@verizon.net">nx4y@verizon.net</a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:arm-allstar@hamvoip.org">arm-allstar@hamvoip.org</a><br>
Subject: [arm-allstar] BBB locking up<br>
<br>
<div style="FONT-FAMILY:Arial;COLOR:#000000;FONT-SIZE:12px;">Has
anyone had issues with their BBB locking up when using a DMK
URI? I have left mine running overnight only to find the
next morning the green URI light isn't blinking, or today,
it was sort of "dimming" instead of flashing on and off.
Yesterday when this happened I tried to SSH in, and when i
entered my password the BBB locked up completely, couldn't
even ping it! Had to power down and back up. Today I could
ssh in, but the URI still wouldn't go back to blinking. This
wont do for a remote site, obviously.. anyone else seen this
or have any ideas for a cure?<br>
<br>
</div>
<br>
_______________________________________________
arm-allstar mailing list
<a class="moz-txt-link-abbreviated" href="mailto:arm-allstar@hamvoip.org">arm-allstar@hamvoip.org</a>
<a class="moz-txt-link-freetext" href="http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar">http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar</a>
Visit the BBB web page -
<a class="moz-txt-link-freetext" href="http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/">http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/</a></div>
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<pre wrap="">_______________________________________________
arm-allstar mailing list
<a class="moz-txt-link-abbreviated" href="mailto:arm-allstar@hamvoip.org">arm-allstar@hamvoip.org</a>
<a class="moz-txt-link-freetext" href="http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar">http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar</a>
Visit the BBB web page - <a class="moz-txt-link-freetext" href="http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/">http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/</a></pre>
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