Re: UHD: USRP source issue when using 2 channels

[address@hidden]

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" <address@hidden> 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, address@hidden 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