Re: [Discuss-gnuradio] Polyphase Filer examples and Busport Implementation for QT GUI Frequency Sink

On Mon, Feb 9, 2015 at 12:59 PM, Larry Van Der Jagt <vandel@gmail.com> wrote:

Thanks for the feedback,

I'm thinking that this means that in their current state, the QT GUI Frequency Sinks do not properly support BusPorts ....

Nope. Just means that there was a bug somewhere along the way that caused a problem connecting the flowgraph up. It's a weird one, but not specific to the QTGUI Frequency Sink.

 

If I've got this wrong is there some documentation somewhere specific to these blocks related to Busports that I could refer to .... I've found the generic Busports stuff already ...

Thanks again,

LVDJ

There's nothing that is (or at least should be) specific to any block with busports over any other block.

Tom

 

 

On Mon, Feb 9, 2015 at 8:30 AM, Tom Rondeau <tom@trondeau.com> wrote:

On Sun, Feb 8, 2015 at 2:50 PM, Larry Van Der Jagt <vandel@gmail.com> wrote:

Hello:

In trying to execute the flowgraphs found in the blog post on the subject at:

http://www.trondeau.com/examples/2014/1/23/pfb-channelizers-and-synthesizers.html

I find that the Busport connections in flowgraphs such as fm_reconstruction.grc and others are broken when they connect to the QT frequency sink block.  I have been looking for information regarding the best way to fix these as there does not seem to be a link to the Bus_connection vector in the block.  I am working with GnuRadio 3.7.6.1 under Ubuntu 12.04 LTS

Any insight or leads are welcomed.

--

Larry Van Der Jagt

Hi Larry,

Unfortunately, this is a pretty nasty problem. I'm not sure where it came from, but it's likely due to some update in GRC (a while ago) that caused a slight change in formatting or parsing. The result is that the GRC files for this example have to be pretty much redone from scratch as far as I can tell. I'm not sure when I'll be able to get to this, either.

Tom