Re: [Discuss-gnuradio] QT GUI (Constellation Sink) Update Period (Refresh Rate)

[Johannes Demel]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi David,

I can't find any obvious mistakes with the configuration. Did you try
to play around with different trigger modes?
Did you try to only have one input?
It may be an issue with different rates from your input data and
output data streams.
Did you try to view data in other parts of your system? Maybe you
could nail it down to a specific block where nothing gets displayed
anymore.

Cheers
Johannes

On 19.11.2015 15:48, David Halls wrote:
> Thanks Johannes,
> 
> I tried setting update period to 0, and still no luck. I have 
> passed the data to text file and checked in MATLAB and the data is 
> fine. With WX graphics the update was slow but with my QT, it
> seems that I am not getting any update at all, I think it's only
> the first 576 points that show for the whole duration of the run.
> 
> Attached are the settings.
> 
> Any ideas?!!?!?!
> 
> Thanks!
> 
> DH ________________________________________ From: 
> address@hidden 
> <address@hidden> on 
> behalf of Johannes Demel <address@hidden> Sent: 17 November 
> 2015 12:40 To: address@hidden Subject: Re: 
> [Discuss-gnuradio] QT GUI (Constellation Sink) Update Period 
> (Refresh Rate)
> 
> Hi David,
> 
>> 2) Should I set 'Number of Points' to 576?
> Yes. The block will take this amount of points and display it. Then
> wait a given time and take the next chunk to display it. As long as
> the block does not have at least the specified amount of symbols
> available, it will not update or display anything.
> 
> 
>> 3) Update period, what is this in terms of, Hz or..., what
>> should I set this to?
> It should be a value in seconds. Since the sink is only updated 
> when enough new samples are available and you send only very few
> to the sink, I recommend setting this value to 0.0. This should 
> trigger an update every 'Number of Points' received samples.
> 
> 
> 
>> Sorry if this is all detailed somewhere but I can't find it 
>> easily in https://gnuradio.org/doc/doxygen/page_qtgui.html
> 
> 
> 
>> ________________________________
> 
>> NOTE: The information in this email and any attachments may be 
>> confidential and/or legally privileged. This message may be read,
>> copied and used only by the intended recipient. If you are not
>> the intended recipient, please destroy this message, delete any
>> copies held on your system and notify the sender immediately.
> 
>> Toshiba Research Europe Limited, registered in England and Wales
>>  (2519556). Registered Office 208 Cambridge Science Park, Milton
>>  Road, Cambridge CB4 0GZ, England. Web: 
>> www.toshiba.eu/research/trl 
>> ---------------------------------------------------------------------
- -
>
>>
>> 
- -----------------
> 
> 
> This email has been scanned for email related threats and delivered
> safely by Mimecast.
>> For more information please visit http://www.mimecast.com 
>> ---------------------------------------------------------------------
- -
>
>>
>> 
- -----------------
> 
> 
> 
> 
>> _______________________________________________ Discuss-gnuradio
>>  mailing list address@hidden 
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 
> _______________________________________________ Discuss-gnuradio 
> mailing list address@hidden 
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
> 
> ________________________________
> 
> NOTE: The information in this email and any attachments may be 
> confidential and/or legally privileged. This message may be read, 
> copied and used only by the intended recipient. If you are not the 
> intended recipient, please destroy this message, delete any copies 
> held on your system and notify the sender immediately.
> 
> Toshiba Research Europe Limited, registered in England and Wales 
> (2519556). Registered Office 208 Cambridge Science Park, Milton 
> Road, Cambridge CB4 0GZ, England. Web: www.toshiba.eu/research/trl
>  
> ----------------------------------------------------------------------
- -----------------
>
>
> 
This email has been scanned for email related threats and delivered
safely by Mimecast.
> For more information please visit http://www.mimecast.com 
> ----------------------------------------------------------------------
- -----------------
>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=kUze
-----END PGP SIGNATURE-----