Am I the only one facing an issue with fetching data from 2 channels of a B210 receiver ? When addressing a single channels (USRP Source -> file sink) all goes well, but whenever I activate a second channel (Num Mboards=1, Num Channels=2) I get an error message
tb = top_block_cls() File "/tmp/GPS.py", line 103, in __init__ self.connect((self.uhd_usrp_source_1, 1), (self.blocks_null_sink_0, 0)) File ".../gnuradio3.8/lib/python3.7/dist-packages/gnuradio/gr/hier_block2.py", line 48, in wrapped func(self, src, src_port, dst, dst_port) File ".../gnuradio3.8/lib/python3.7/dist-packages/gnuradio/gr/hier_block2.py", line 111, in connect self.primitive_connect(*args) File ".../gnuradio3.8/lib/python3.7/dist-packages/gnuradio/gr/runtime_swig.py", line 5461, in primitive_connect return _runtime_swig.top_block_sptr_primitive_connect(self, *args) RuntimeError: port number 1 exceeds max of 0 whatever sink (file, null) is attached to the UHD output. I am facing the issue with custom 3.8.0.0-rc2 (Python 3.7.5) or the current Debian/sid 3.8.0.0 (Python 3.7.5) versions of GNU Radio Companion. The flowchart with the issue is at http://jmfriedt.org/GPS.pdf Thanks, JM
