I confirm that with the current git (GNU Radio 3.9.0) the issue seems solved.
JM -- JM Friedt, FEMTO-ST Time & Frequency/SENSeOR, 26 rue de l'Epitaphe, 25000 Besancon, France November 21, 2019 11:14 AM, "Müller, Marcus" <muel...@kit.edu> wrote: > I'm soooo close to shouting out "ha-ha! Integer signedness error!", but > I think chances are this was fixed on master in > 8eb1a354c0b5126b6c0b7d55b68963a155088b3a. > > On Thu, 2019-11-21 at 01:57 -0800, Ron Economos wrote: > >> I have the same issue, but the error message is different. >> >> Traceback (most recent call last): >> File "/home/re/xfer/uhdrx.py", line 213, in <module> >> main() >> File "/home/re/xfer/uhdrx.py", line 191, in main >> tb = top_block_cls() >> File "/home/re/xfer/uhdrx.py", line 97, in __init__ >> self.uhd_usrp_source_0.set_center_freq(center_freq, 1) >> File >> "/opt/gnuradio-3.7.12git/lib/python3.6/dist-packages/gnuradio/uhd/uhd_swig.py", >> line 3600, in set_center_freq >> return _uhd_swig.usrp_source_sptr_set_center_freq(self, *args) >> RuntimeError: LookupError: IndexError: multi_usrp: RX channel >> 140641462873248 out of range for configured RX frontends >> >>>>> Done (return code 1) >> >> Ron >> >> On 11/21/19 00:43, jean-michel.fri...@femto-st.fr wrote: >> 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