nobletoll / powersdr-if-stage

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Different buffer sizes across modes causes k3/powersdr comm problems #187

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago
I'm running a Delta 44 sound card with LP-Pan and a K3.  The computer is a Dell 
XPS 410 running Windows XP Service Pack 3.

The problem I was having was that PowerSDR would lose control/sync with the K3 
after tuning around for awhile.  Noticed that it seemed to occur after tuning 
caused a mode change, as when one band was in CW mode while another band was in 
a SSB mode or when hitting the band button multiple times causing mode changes. 
 I was running with different buffer sizes across modes and setting all modes 
to the same buffer sizes has solved the problem.

To cause the problem --

In setup/Audio and on Delta 44, set buffer size to 512.  
In setup/DSP/Options, for Phone and digital set RX:4096, TX:1024, but for CW 
set RX:4096, TX:512.
Now start up powersdr and tune around in such a way that mode changes occur.
I think you'll find that things start going haywire and, in particular, you'll 
lose communication with the k3.

To fix the problem, set buffers for all modes to, say, RX:4096, TX:1024 and 
also set the Audio buffer size to 1024.

Original issue reported on code.google.com by from...@gmail.com on 20 Sep 2010 at 6:18