[hpsdr] ghpsdr3 servers on Windows--progress

[Phil Harman]

Hi David,

Increased current draw from the FPGA with more receives is quite normal.
We are using more logic elemements in the FPGA the more receivers we add -
hence the increased current drain.

Good luck with the porting!

73's Phil...VK6APH



> ***** High Performance Software Defined Radio Discussion List *****
>
> I'm attempting to port John Melton's ghpsdr3 server and dspserver to a
> Windows environment, with partial success.
> I'm making minimal changes to his code, staying in C, using Visual Studio
> 6.
>
> I'm using windows versions of DttSP, fttw, and pthreads, and Ozy-init
> code from USRP-hpsdr.
> Things that seem to work--
>   loading Ozy Fx2 & fpga
>   commands (attach and start) from dspserver to server
>   commands from jmonitor to dspserver (e.g. frequency / band / mode
> change)
>
> Things that don't work yet--
>   no receive audio
>   no spectrum or waterfall display.  jmonitor just writes full-width
> white lines, seemingly at random, for the waterfall display.  The UDP
> ports used by server, dspserver, and jmonitor seem to be consistent.
>
> The above results were with Ozy software version 17, Mercury 29, and
> Penelope 12.
>
> If I reprogram Mercury with the multi-Rx code from W1BW, the 5v power
> supply current is increased from the "normal" value, my little power
> supply goes into current limiting (> 1.2 amp, with only Mercury & Ozy on
> Atlas), and the server calls to OzyBulkRead() fail with code -22.  This
> may be due to low power supply voltage, or to software / firmware
> incompatibility, I don't know which, at the moment.
>
> Has anyone else noticed increased Mercury power supply current when
> using the W1BW code?
> If it's "normal", I'll use a more capable power supply and continue
> toward a working multiple-receiver system.
>
> Dave  wa8ywq
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