On 10/17/2011 01:01 PM, Tom Rondeau wrote: > On Mon, Oct 17, 2011 at 12:54 PM, Josh Blum <j...@joshknows.com> wrote: > >> >> >> On 10/17/2011 12:34 PM, Jason Bonior wrote: >>> Today we installed the git versions of grblock, grc, gnuradio, and uhd on >> a >>> system with Debian 6.0.3, 64-bit (also installed this morning). When >> trying >>> to run the demo files we receive the following errors: >>> >>> local@ch400l-laptop:~$ /usr/local/share/grblock/ >>> examples/adder_demo.py >>> handler caught exception: Unknown exception >>> Traceback (most recent call last): >>> File "/usr/local/lib/python2.6/dist-packages/grblock/gateway.py", line >> 52, >>> in handle >>> try: self._callback() >>> File "/usr/local/lib/python2.6/dist-packages/grblock/gateway.py", line >> 120, >>> in __grblock_handle >>> [self.__message.work_args.ninput_items]*len(self.__in_sig), >>> File "/usr/local/lib/python2.6/dist-packages/grblock/gateway.py", line >> 41, >>> in pointers_to_ndarrays >>> return [pointer_to_ndarray(*args) for args in zip(addrs, dtypes, >> nitems)] >>> File >>> >> "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/gnuradio_core_hier.py", >>> line 118, in next >>> return _gnuradio_core_hier.SwigPyIterator_next(self) >>> RuntimeError: Unknown exception >>> thread[thread-per-block[2]: <gr_block add 2 f32 (4)>]: caught >> unrecognized >>> exception >>> ^Cexcepted (1, 5, 9, 13, 17) >>> actual () >>> handler caught exception: Unknown exception >>> Traceback (most recent call last): >>> File "/usr/local/lib/python2.6/dist-packages/grblock/gateway.py", line >> 52, >>> in handle >>> try: self._callback() >>> File "/usr/local/lib/python2.6/dist-packages/grblock/gateway.py", line >> 120, >>> in __grblock_handle >>> [self.__message.work_args.ninput_items]*len(self.__in_sig), >>> File "/usr/local/lib/python2.6/dist-packages/grblock/gateway.py", line >> 41, >>> in pointers_to_ndarrays >>> return [pointer_to_ndarray(*args) for args in zip(addrs, dtypes, >> nitems)] >>> File >>> >> "/usr/local/lib/python2.6/dist-packages/gnuradio/gr/gnuradio_core_hier.py", >>> line 118, in next >>> return _gnuradio_core_hier.SwigPyIterator_next(self) >>> RuntimeError: Unknown exception >>> thread[thread-per-block[2]: <gr_block add 2 fc32 (10)>]: caught >> unrecognized >>> exception >>> ^Cexcepted (1, 5j, 9, 13j, 17) >>> actual () >>> local@ch400l-laptop:~$ >>> >> >> The traceback is a bit unclear. I think the problem is happening in >> pointer_to_ndarray. Can you put some prints in gateway.py and find out >> what line is dying? >> >> pointer_to_ndarray is the darkest magic used in grblock. Perhaps >> something differers between numpy versions. I have only tested on ubuntu >> 11.04 and 11.10 >> https://github.com/guruofquality/grblock/blob/master/python/gateway.py#L24 >> >> grblock certainly needs to be tested across wider audience. I am glad >> you are giving it a try. I am ccing gr discuss. More eyes and testers >> cant hurt. >> >> So if someone is bored or has 5 mins, can you compile this on your >> system and let me know if the examples work for you? >> https://github.com/guruofquality/grblock >> >> _josh >> > > > We don't normally pass numpy arrays through Swig to GNU Radio, which could > be your problem. Try passing it as you_ndarray.tolist() and see if that > works. >
So, its actually only passing an integer (representing a memory address) into python. The routine described above is using numpy's array interface to turn that address into a numpy array. https://github.com/guruofquality/grblock/blob/master/python/gateway.py#L24 http://docs.scipy.org/doc/numpy/reference/arrays.interface.html -Josh _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
