I had originally asked this question on the USRP site, but it was
recommended by someone from Ettus to post over here since there is a
chance it is more of a GNURadio issue than USRP.
I am attempting to create an RFNoC block for the X310 and it works
fine. I then wanted to add a message port to the block to pass variable
into it. The message port shows up in GRC and the flowgraph runs fine
as long as I leave the message port disconnected. Once I try to connect
something to it, I see the following error:
Could not find port: msg in:
rfnoc
system
Traceback (most recent call last):
File "/home/jmat/rfnoc-multiaperture/examples/CPremoval.py", line
253, in <module>
main()
File "/home/jmat/rfnoc-multiaperture/examples/CPremoval.py", line
241, in main
tb = top_block_cls()
File "/home/jmat/rfnoc-multiaperture/examples/CPremoval.py", line
196, in __init__
self.msg_connect((self.foo_periodic_msg_source_0, 'out'),
(self.multiaperture_cpremoval_0, 'msg'))
File
"/home/jmat/rfnoc/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py",
line 59, in wrapped
func(self, src.to_basic_block(), srcport, dst.to_basic_block(),
dstport)
File
"/home/jmat/rfnoc/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py",
line 131, in msg_connect
self.primitive_msg_connect(*args)
File
"/home/jmat/rfnoc/lib/python2.7/dist-packages/gnuradio/gr/runtime_swig.py",
line 3489, in primitive_msg_connect
return _runtime_swig.top_block_sptr_primitive_msg_connect(self, *args)
RuntimeError: invalid msg port in connect() or disconnect()
>>> Done
I can't for the life of me figure out what GR "could not find." I see
other people with similar posts in the past, but I never found a good
resolution.
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