On Tue, Nov 16, 2010 at 11:51:51AM -0500, g...@vt.edu wrote:
I set up a two-node link using tunnel.py, two nodes continuously exchanged
data
with each other. Quite often, GNU Radio stopped in one node because of the
following error. Any hints to resolve this problem will be highly appreciated.
Andrew
Exception in thread Thread-1:
Traceback (most recent call last):
File /usr/lib/python2.6/threading.py, line 532, in __bootstrap_inner
self.run()
File /home/titan/new_multi_chan/pkt.py, line 95, in run
ok, payload = packet_utils.unmake_packet(msg.to_string(), int(msg.arg1()))
File /usr/local/lib/python2.6/dist-packages/gnuradio/packet_utils.py, line
183, in unmake_packet
payload_with_crc = dewhiten(whitened_payload_with_crc, whitener_offset)
File /usr/local/lib/python2.6/dist-packages/gnuradio/packet_utils.py, line
95, in dewhiten
return whiten(s, o)# self inverse
File /usr/local/lib/python2.6/dist-packages/gnuradio/packet_utils.py, line
91, in whiten
z = sa ^ random_mask_vec8[o:len(sa)+o]
ValueError: shape mismatch: objects cannot be broadcast to a single shape
I looks like you may be passing a zero-length string to unmake_packet,
and that whiten doesn't not properly deal with a zero length string.
Try not calling unmake_packet if msg.to_string() returns a zero length
string.
Eric
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