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Hi Bill,<br>
<br>
Thanks for the comments. <br>
<br>
I will think a bit more on the discovery feature. Maybe you are
right, the web server obviates the need for discovery. It might
still be useful in small systems to allow them to somewhat
self-configure. Is there a way we could include it as an
implementation-optional feature of the protocol without it being a
security risk? Maybe a feature we can turn off?<br>
<br>
My section 4 does need a lot more work. I don't want to limit things
to just WSPR and RBN, but to anything that can be implemented in an
application running on the Local Host. I will see how I can word it.
Making things appealing to more hams is always a good thing. Maybe
if we can make the TangerineSDR do multiple things at once (like a
multi-band RBN receiver and PSWS simultaneously) we will get more
PSWS users.<br>
<br>
73,<br>
Scotty WA2DFI<br>
<br>
<div class="moz-cite-prefix">On 2019-06-03 14:52, Engelke, Bill
wrote:<br>
</div>
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<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">Scotty – I have
reviewed the doc you posted, and a few comments…<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="color:#1F497D"><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span
style="color:#1F497D">I will update the Local Host
Functional Spec to have section numbers.<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="color:#1F497D"><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span
style="color:#1F497D">Regarding the Discovery feature:
recall that the Local Host will be running a web server, via
which the user will exert control over the Local Host. The
user will be able to enter the address of a large local
client box to send data to. Do we really wish to add the
ability for the client box to grab control of the Tangerine?
This whole Discovery concept seems to me a holdover from the
days where the SDR was little more than an ADC.
<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-.25in;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="color:#1F497D"><span style="mso-list:Ignore">-<span
style="font:7.0pt "Times New Roman"">
</span></span></span><!--[endif]--><span
style="color:#1F497D">You mention WSPR and RBN below (and
FT8 reception could also be added) – these will make the
devices more appealing to Hams. Perhaps you would like to
add these to Section 4.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">-Talk to you
later – 73- Bill<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span
style="color:windowtext"> TangerineSDR
<a class="moz-txt-link-rfc2396E" href="mailto:tangerinesdr-bounces@lists.tapr.org"><tangerinesdr-bounces@lists.tapr.org></a>
<b>On Behalf Of </b>Scotty Cowling via TangerineSDR<br>
<b>Sent:</b> Monday, June 3, 2019 1:43 PM<br>
<b>To:</b> TAPR TangerineSDR Modular Software Defined
Radio <a class="moz-txt-link-rfc2396E" href="mailto:tangerinesdr@lists.tapr.org"><tangerinesdr@lists.tapr.org></a><br>
<b>Cc:</b> Scotty Cowling <a class="moz-txt-link-rfc2396E" href="mailto:scotty@tonks.com"><scotty@tonks.com></a><br>
<b>Subject:</b> [TangerineSDR] Local Host Functional
Specification v 0.3 and TangerineSDR Requirements
Document V0.3<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Bill,<br>
<br>
This looks excellent! I have been working on a TangerineSDR
requirements document, which I have put up on the web page
here:<br>
<br>
<a
href="http://TangerineSDR.com/TangerineSDR_documents/TangerineSDR_Requirements_V0_3.pdf"
moz-do-not-send="true">http://TangerineSDR.com/TangerineSDR_documents/TangerineSDR_Requirements_V0_3.pdf</a><br>
<br>
What I call the "C&C Processor" is what you call "Local
Host". I like your term better, so I will change it in my next
revision.<br>
<br>
Since the SBC can run several processes, it seems that
"Command and Control", "web browser", "data analysis", "ring
buffer storage", as well as optional functions "GnuRadio",
"WSPR", "RBN", etc are all just applications running under the
Local Host operating system. I am not sure how to make this
more clear (maybe it is clear enough?)<br>
<br>
One other thing (maybe Tom already asked for this), can you
put section numbers on the document to make it easier to
reference to specific parts?<br>
<br>
You mentioned the Local Host's ability to program the FPGA on
the DE. While you can always plug a USB Blaster directly onto
the DE JTAG port (you will need to do this to run the
SignalTap debugging software in the Quartus tools anyway),
here is how it will eventually work. <br>
<br>
The MAX10's configuration is in stored in SRAM cells within
the part. Being volatile, it the SRAM must be loaded at every
power up. The MAX10 uses internal flash memory to store two
configuration images. On power up, the MAX10 automatically
loads the main image into SRAM and releases its internal
reset, running the default configuration. If this flash image
gets corrupted, the MAX10 will automatically load the
secondary image and attempt to run that.<br>
<br>
So the idea is to use the main image as the "upgrade-able"
image, while the secondary image is the "factory" image that
is never modified. Both images contain a boot loader that
implements flash erase and write of the main image (but not
the secondary one) via the Ethernet port. Note that the MAX10
runs out of SRAM. Any changes to the flash image only take
effect at the next reset cycle (power up or programmable
reset).<br>
<br>
So the Local Host will run an "update" application that will
talk to the MAX10's boot loader code. If the main flash image
gets corrupted (e.g., power fail during update), the secondary
image will automatically provide the boot loader function. I
like the Elecraft model of being able to read the current DE
firmware version and hardware configuration and then go out to
the "TangerineSDR Repository" and offer the user clickable
firmware versions that match his hardware. Firmware versions
from local storage can also be included for those intrepid
souls who want to write their own FPGA code (or for us
developers writing/updating existing code). It can all be
GUI-driven (maybe all from a web browser?) so it will be easy.
<br>
<br>
My hope is that it will be so easy that users can switch
between applications like PSWS, RBN, WSPR at any time. It is
*software* defined, after all! :-) I may be expecting too
much, however, since external connections will likely change
for each application, and they are *not* software defined. <br>
<br>
73,<br>
Scotty WA2DFI<span style="font-size:12.0pt"><o:p></o:p></span></p>
<div>
<p class="MsoNormal">On 2019-05-24 12:39, Engelke, Bill wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Scotty - Please see attached, updated to
include some of the things discussed at Dayton. Next I will
work on the Functional Specifications for the Central
Control & Database system.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">If anyone would like me to start posting
to the TAPR github or somewhere, please just text
credentials to my mobile number, below. I can assure
everyone that I will not make a mess of it, having done this
before.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">W. D. Engelke (Bill), Asst. Research
Engr.<o:p></o:p></p>
<p class="MsoNormal">Center for Advanced Public Safety<o:p></o:p></p>
<p class="MsoNormal">Cyber Hall<o:p></o:p></p>
<p class="MsoNormal">The University of Alabama<o:p></o:p></p>
<p class="MsoNormal">Tuscaloosa, AL 35487<o:p></o:p></p>
<p class="MsoNormal">Desk: (205) 348-7244<o:p></o:p></p>
<p class="MsoNormal">Mobile: (205) 764-3099<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
</blockquote>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif"><o:p> </o:p></span></p>
</div>
</blockquote>
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