Hello,
I'm using Ubuntu 11.10, UHD 003.004.000, the USRP N210, and the TVRX2 card.
I am trying to use both the receive channels at once but I am getting a
strange error.
Below is my code:
self.Add(self.wxgui_fftsink2_0.win)
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(2),
),
)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(509e6, 0)
self.uhd_usrp_source_0.set_gain(3, 0)
self.uhd_usrp_source_0.set_center_freq(593e6, 1)
self.uhd_usrp_source_0.set_gain(3, 1)
However, when I run code that has this, I get this error:
Traceback (most recent call last):
File "/home/shea/top_block.py", line 97, in <module>
tb = top_block()
File "/home/shea/top_block.py", line 76, in __init__
self.uhd_usrp_source_0.set_center_freq(509000000, 1)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py",
line 1846, in set_center_freq
return _uhd_swig.uhd_usrp_source_sptr_set_center_freq(self, *args)
RuntimeError: vector::_M_range_check
It seems like it isnt letting me instantiate multiple channels. It doesn't
work in Gnuradio Companion either and I get the same error message. Does
anyone have any ideas what could be going wrong?
I can give any more information you need.
Thanks!
SW
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