I did following: I made simple flow graph and used USRP source first with
two channels and LFTX mboard. But the follwong error occurs:
File "/home/savi_ne/work/gnuradio/GRC/top_block.py", line 105, in __init__
self.uhd_usrp_source_0_0_1.set_center_freq(433900000, 1)
File "/usr/local/lib64/python2.6/site-packages/gnuradio/uhd/uhd_swig.py",
line 1872, in set_center_freq
return _uhd_swig.uhd_usrp_source_sptr_set_center_freq(self, *args)
RuntimeError: vector::_M_range_check
When I tried with setting two mboards, with LFTX A channel subdevice in the
first channel (B:A option_ and WBX on the second channel I get following
error:
File "./top_block.py", line 101, in __init__
self.uhd_usrp_source_0_0_1.set_subdev_spec("A:0", 1)
File "/usr/local/lib64/python2.6/site-packages/gnuradio/uhd/uhd_swig.py",
line 1831, in set_subdev_spec
return _uhd_swig.uhd_usrp_source_sptr_set_subdev_spec(self, *args,
**kwargs)
RuntimeError: vector::_M_range_check
And as far as I have seen GRC doesn't put anything in the field device_addr
for changing FPGA image.
On Tue, Dec 3, 2013 at 6:03 PM, Marcus D. Leech <mle...@ripnet.com> wrote:
> On 12/03/2013 12:00 PM, Nemanja Savic wrote:
>
>> Thank you Marcus again,
>>
>> I changed device address, in both places, but the same problem appears. I
>> see that it loads now 4rx image, but the problem remains.
>>
>> self.uhd_usrp_source_1 = uhd.usrp_source(
>> device_addr="fpga=usrp1_fpga_4rx.rbf",
>> stream_args=uhd.stream_args(
>> cpu_format="fc32",
>> channels=range(1),
>> ),
>> )
>>
>>
>> You should probably start with a GRC flow-graph with a single UHD USRP
> source, with two channels being what you want, and look at the generated
> Python code.
>
>
>
>
>
> --
> Marcus Leech
> Principal Investigator
> Shirleys Bay Radio Astronomy Consortium
> http://www.sbrac.org
>
>
--
Nemanja Savić
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