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<div class="moz-cite-prefix">On 03/10/2017 03:50 PM, Ketul Shah
wrote:<br>
</div>
<blockquote
cite="mid:CAM3zFrSt+HE_SK9pzLLh803yMQavtZ6bwuKj+d0VwVG2kg4xvA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi Nikolay and all,
<div><br>
</div>
<div>Glad to see your interest ...!</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 9 March 2017 at 15:24, Nikolay
Komashinskiy <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:nikolay.komashinskiy@yandex.ru"
target="_blank">nikolay.komashinskiy@yandex.ru</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><span
class="">
<div>I think Ethernet mostly works on BB's. There were
some performance issues at one point</div>
<blockquote type="cite">
<div>
<div>
<div>
<div>related to UBoot version. It was like a
10x difference. I think it was narrowed down
to </div>
<div>the initialization of the cache or MMU
being different. </div>
<div><br>
I have cc'ed Ben Gras.He is more likely to
remember the details.</div>
<div> </div>
<div>--joel</div>
<div> </div>
<blockquote style="margin:0 0 0
0.8ex;border-left:1px #ccc
solid;padding-left:1ex">______________________________<wbr>_________________<br>
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target="_blank">http://lists.rtems.org/<wbr>mailman/listinfo/users</a></blockquote>
</div>
</div>
</div>
</blockquote>
<div> </div>
</span>
<div>I also found that there is a gpio code for
beaglebone. These peripherals are interested for me</div>
<div>because in the future I want to implement a
distributed real-time system - that would be hard to do</div>
<div>without ethernet (afaik am335x supports IEEE 1588v2
protocol).</div>
<div>So, could you tell me what is the current state of
ethernet and gpio?</div>
<div> </div>
<div>And I still can't understand do I need a jtag in
order to debug rtems on top of beagleboard?</div>
<br>
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</blockquote>
</div>
<br>
</div>
<div class="gmail_extra">Me and my friend Ragunath worked on
GPIO and Networking ( Ethernet driver) in GSoC'15.</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">I also cc'ed Ragu. He would be the
right person to guide you out for Ethernet driver.</div>
<div class="gmail_extra">Also last year Punit worked on PWM
driver...</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">You can refer to following links :- </div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">1. <a moz-do-not-send="true"
href="http://ragustechblog.blogspot.in/2015/06/gsoc-2015.html">http://ragustechblog.blogspot.in/2015/06/gsoc-2015.html</a></div>
<div class="gmail_extra">2. <a moz-do-not-send="true"
href="https://github.com/ketul93/RTEMS-on-BBB">https://github.com/ketul93/RTEMS-on-BBB</a></div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">Also for debug method we generally use
printf statements in code and debug using serial utilities
(ex. picocom) using UART communication.</div>
<div class="gmail_extra">For better debugging yes you would need
JTAG ... </div>
<br>
</div>
</blockquote>
<br>
Thanks for your input Ketul.<br>
<br>
I totally agree that printf is usually enough. That does require a
'special' cable (serial TTL logic levels to usb) but is worth it.
JTAG also requires a<br>
special cable.<br>
<br>
If you can, consider a beaglebone white - it has the UART and JTAG
on the regular USB port (the one it already takes power from), an
ideal development board with the same SOC as the BBB.<br>
<br>
<br>
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