[hpsdr] Come and get it, code's ready!

[Steve Bunch]

Spoke too soon.  After the storms passed and I got in some long runs  
with clearer background noise, I do still see lost data with Mercury,  
though it doesn't cause big pops - usually just blips of no audio -  
and it's not as frequent.  This shows itself visually as a multi-pixel  
vertical 'smear' of the PowerSDR waterfall, that is, same-pixel data  
repeated for multiple rows.  The blip is coincident with a small  
downward blip in the otherwise very-constant I/O Bandwidth reported in  
Process Explorer -- saying that less data was read during that  
sampling period.  This was when listening to CW on 17M, and the loss  
occurred about once per minute or so, though it wasn't consistent.  It  
probably occurs under other conditions, this was just one spot I tried  
that had steady background noise at the time.

So there is data loss still going on somewhere with the new firmware,  
at the highest data rate.  I'm trying to dig deeper into it now.

Steve, K9SRB

On Jun 1, 2009, at 4:07 PM, Steve Bunch wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Just updated Mercury and Penelope to 2.7, and it's working very well  
> for me.  (Updated Janus but have not tried it yet.)
>
> I had previously been experiencing frequent pops/dropouts at 192K  
> (less often at 512 than with larger buffers), and less often but  
> still happening at 96K.  Now running at 192K/2048 and 1024 w/o  
> problems other than occasional lightning-induced ADC overloads --  
> shutting down soon!
>
> Hardware here is a 2.4GHz Core 2 quad with 4GB RAM, intel DP35DP  
> motherboard, motherboard USB, separate graphics board, TAPR-built  
> HPSDR boards running from a PC power supply, board order randomly  
> chosen as Penny/Ozy/Mercury in J6 (closest to P/S)/J5/J4.  Software  
> is WinXP SP3 32-bit, McAfee virus protection on, .NET 3.5 SP1, a few  
> other things running, but nothing big.  Listening to AM radio is  
> taking a bit over 30% of one processor with 192K/2048 sampling, CPU  
> affinity set to CPU 3 only, scheduling RT, running a full-width  
> waterfall, no NR/NB/ANF -- a configuration that previously generated  
> lots of pops/dropouts.  CPU Time is split a bit under 1/4 system  
> time, 3/4 user (per Process Explorer).  These same settings used to  
> pop at least once or twice per waterfall screen, so this is a big  
> improvement.
>
> Thanks to Kirk, Bill, and Phil for all the hard work on this!
>
> 73,
> Steve, K9SRB
>
> On May 28, 2009, at 11:39 PM, Bill Tracey wrote:
>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> All,
>>
>> Thanks to the great work done by Kirk KD7IRS we have new version of  
>> FPGA code for all the HPSDR boards.  The latest versions completely  
>> removes any remnants of board position sensitivity and should also  
>> allow operation at 192k/2048k on PC's that previously had  
>> difficulty with these rates.
>>
>> The new code also improves the performance using John Melton's GTK+  
>> Linux console -
>>
>> < http://javaguifordttsp.blogspot.com/ >.
>>
>> It is also essential for use with the shortly to be released  
>> Windows K.I.S.S. Konsole.
>>
>> In order to make use of this new code the ROMs on Penny and Mercury  
>> boards must be updated. If you're using Janus with Mercury and/or  
>> Penelope you will need to update it as well.   A new version of  
>> PowerSDR that has the new Ozy and FX2 code has been posted.
>>
>> The latest version numbers are:
>>
>> Mercury - V2.7
>> Penelope - V1.2
>> Janus - V3
>> Ozy - V1.3
>> FX2 -  20090524
>>
>> The procedure to update the CPLD or EEPROMs on the various boards  
>> is the same as before.  Use SVN to check out the files from
>>
>> < svn://206.216.146.154/svn/repos_sdr_hpsdr/trunk/USBBlaster- 
>> Binaries >
>>
>> and follow the instructions in the README.txt file.
>>
>> You must also use the latest Ozy_Janus.rbf, ozyfw_sdr1k.hex and   
>> PowerSDR files which can be obtained from the usual SVN place:
>>
>> < svn://206.216.146.154/svn/repos_sdr_windows/PowerSDR/branches/ 
>> kd5tfd/PennyMerge/bin/Release  >
>>
>> At this time Janus is only working well at 192khz, so PowerSDR is  
>> currently setup to use the prior version of Ozy and FX2 firmware  
>> when configured for an SDR 1000 + Janus setup.  If that's you're  
>> configuration it is not recommended to update the Janus CPLD code  
>> at this time
>>
>> As before please report any successes or problems via the HPSDR  
>> mail reflector.
>>
>>
>> Phil (VK6APH)
>> Bill (kd5tfd)
>>
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>
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