Converting gnuradio-companion designs to gnuradio 3.7

GNU Radio
1

Hi - I’ve converted over to using gnuradio 3.7 from the ‘next’ branch.

Over time, I’ve accumulated a considerable library of gnuradio-companion
designs, and found that
the few designs I’ve spot checked so far don’t load correctly under 3.7.
An example
error is as follows:

dspdev.2035> gnuradio-companion correlator.grc
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.005.002-65-g265daa58

<<< Welcome to GNU Radio Companion v3.6.4.1-1280-g0a8078a5 >>>

Loading: “correlator.grc”

Error: Block key “gr_vector_source_x” not found in Platform - grc(GNU
Radio Companion)
Traceback (most recent call last):
File “/usr/local/bin/gnuradio-companion”, line 70, in
try:
gtk.window_set_default_icon(gtk.IconTheme().load_icon(‘gnuradio-grc’,
256,
0))
GError: Icon ‘gnuradio-grc’ not present in theme

I realize the APIs structure has changed, and for hand coded python
blocks,
I’ve
made the necessary changes. The .grc designs are more painful to deal
with
here, since
it would seem that they have to be substantially re-entered into
gnuradio-companion. With
the design not rendering due to missing blocks, there isn’t much of a
trail
of breadcrumbs
to reconstruct the designs from.

Is there a conversion program or some trick I’m missing? Figured I
would
ask, before
investing the time to re-enter the designs I really need.

Host platforms are 64 bit Ubuntu machines, running 12.04, 12.10. Last
git
pull og gnuradio
was on May 21, with the ‘old’ version of gnuradio 3.6 entirely wiped
from
/usr/local before
compile/install of 3.7.

Thanks – Rick S.

2

On 05/23/2013 04:57 PM, Rick S. wrote:

<<< Welcome to GNU Radio Companion v3.6.4.1-1280-g0a8078a5 >>>

Loading: “correlator.grc”

Error: Block key “gr_vector_source_x” not found in Platform - grc(GNU
Radio Companion)

last time this happened, GRC had a lookup table of old block keys to new
ones. Upon import, olds keys are mapped to new ones, and it just works
tm. Especially since all the parameters are the same, only some key
names should have changed. Should be possible to do this again.

-josh

3

On Thu, May 23, 2013 at 5:57 PM, Rick S. [email protected]
wrote:

GError: Icon ‘gnuradio-grc’ not present in theme

Thanks – Rick S.
We don’t have a way of doing automatic conversions from 3.6 to 3.7. It
should be possible, as Josh suggested in a parallel response here, if
someone wants to help us out (we can provide a spread sheet with the
list of blocks and where they are now).

For now, though, we’ve provided some help by renaming blocks in 3.6 if
they are of the “old” style. So my best advice is to reinstall 3.6 and
open up your flowgraphs. You’ll see “(old)” in the name of the block,
which indicates that it won’t be there in 3.7. So you can update this
with the 3.7 style block to be forward compatible.

See this page for help:
http://gnuradio.org/redmine/projects/gnuradio/wiki/Move_3-6_to_3-7

Tom

4

with the 3.7 style block to be forward compatible.

See this page for help:
http://gnuradio.org/redmine/projects/gnuradio/wiki/Move_3-6_to_3-7

I put together a little set of compatibility headers. Its certainly not
complete, just install this and I was able to compile gr-baz w/o changes
when using the gnuradio next branch:

So if anyone gives grcompat a try on their out of tree project, and
finds a missing header or so, send it over. I think this will help
smooth the transition.

Some of the find modules for gnuradio differ a bit. For another project
I had to manually add these arguments to the cmake configure:
-DGRUEL_INCLUDE_DIRS=/usr/local/include/grcompat
-DGNURADIO_CORE_INCLUDE_DIRS=/usr/local/include/grcompat

-josh