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[Discuss-gnuradio] Fwd: modtool noblock and xml files and grc

From: Johnathan Corgan
Subject: [Discuss-gnuradio] Fwd: modtool noblock and xml files and grc
Date: Thu, 28 May 2015 08:45:18 -0700

On Thu, May 28, 2015 at 8:26 AM, John Murphy <address@hidden> wrote:
Anyhow, it unexpectedly generated an xml file to import the non-block into GRC.
Is there a best way to just remove that xml file without causing other issues?

First, do a 'make uninstall' from your build directory, to remove the file from where GRC finds it.

Then, edit grc/CMakeLists.txt and remove the line that has the XML filename in it.

Finally, rerun the build (cmake, make, sudo make install, etc.).

Also when I tried to drag and drop the non-block into GRC, presumably from the default created xml file with no edits (curiosity always gets one in trouble?) GRC went to a blank screen. Of course I was able to close and restart and pick up at the last save which was fine. Okay none of that is really unexpected.

In general, gr_modtool creates XML files that need further editing before being usable in GRC; in this case, GRC didn't handle the mis-parse very well.
I guess there must be a reason you would have a noblock that can be added to a flowgraph?

You can create generic functions with parameters that you can set up as variables in GRC.  They aren't blocks added to the flowgraph but are still "GRC blocks".

Johnathan Corgan
Corgan Labs - SDR Training and Development Services
Intro to SDR Classes - June 4-5, Columbia MD, June 29-30, El Segundo, CA

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