On 25/02/12 09:00 PM, shea_watson wrote: > Now i'm getting another error that i wasn't getting before... > > Exception in thread Thread-2: > Traceback (most recent call last): > File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner > self.run() > File "./runDTVPos.py", line 333, in run > tb = collect_double_tb(f0,filename0,f1,filename1,nsamples) > File "/home/shea/Dropbox/SDP/Shea/DTVPos/Code/USRP_collection_double.py", > line 38, in __init__ > channels=range(2), > File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", > line 112, in constructor_interceptor > return old_constructor(*args) > File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", > line 2826, in usrp_source > return _uhd_swig.usrp_source(*args) > RuntimeError: Operation not permitted > > Am I not calling the constructor for the source right? > > This GRC flow-graph works just fine with two TVRX2 channels, albeit, specifying a B100 platform. (I've attached them).
This is with the latest UHD + Gnu Radio, fresh from GIT as of a couple of days ago. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
dual_tvrx2_test.grc
Description: application/gnuradio-grc
#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Dual Tvrx2 Test
# Generated: Sat Feb 25 21:28:10 2012
##################################################
from gnuradio import eng_notation
from gnuradio import gr
from gnuradio import uhd
from gnuradio import window
from gnuradio.eng_option import eng_option
from gnuradio.gr import firdes
from gnuradio.wxgui import fftsink2
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import wx
class dual_tvrx2_test(grc_wxgui.top_block_gui):
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Dual Tvrx2 Test")
_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = 320e3
##################################################
# Blocks
##################################################
self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=5,
average=True,
avg_alpha=0.1,
title="FFT Plot",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0_0.win)
self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
self.GetWin(),
baseband_freq=0,
y_per_div=10,
y_divs=10,
ref_level=0,
ref_scale=2.0,
sample_rate=samp_rate,
fft_size=1024,
fft_rate=5,
average=True,
avg_alpha=0.1,
title="FFT Plot",
peak_hold=False,
)
self.Add(self.wxgui_fftsink2_0.win)
self.uhd_usrp_source_0 = uhd.usrp_source(
device_addr="type=b100",
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(2),
),
)
self.uhd_usrp_source_0.set_subdev_spec("A:RX1 A:RX2", 0)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(106.1e6, 0)
self.uhd_usrp_source_0.set_gain(25, 0)
self.uhd_usrp_source_0.set_center_freq(101.1e6, 1)
self.uhd_usrp_source_0.set_gain(25, 1)
##################################################
# Connections
##################################################
self.connect((self.uhd_usrp_source_0, 0), (self.wxgui_fftsink2_0, 0))
self.connect((self.uhd_usrp_source_0, 1), (self.wxgui_fftsink2_0_0, 0))
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
self.wxgui_fftsink2_0.set_sample_rate(self.samp_rate)
self.wxgui_fftsink2_0_0.set_sample_rate(self.samp_rate)
if __name__ == '__main__':
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
(options, args) = parser.parse_args()
tb = dual_tvrx2_test()
tb.Run(True)
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