Discussion:
airprobe-freq hopping
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tom
2014-11-14 20:24:51 UTC
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Hi all
Trying to get frequency hopping on gnuradio 3.7 and
https://github.com/BogdanDIA/airprobe-hopping
The build goes fine but when I try to run ./capture_decode I get the
following.

./capture_decode_channelize2.sh
min_ARFCN: 18
max_ARFCN: 25
Center ARFCN: 21
Center frequency: 939200000khz
Sampling rate: 464286
Number of samples: 256000000
CA files: out/out_18.cf out/out_21.cf out/out_22.cf out/out_23.cf
out/out_24.cf out/out_25.cf
C0 ARFCN: 18
C0 position: 0
SR: 464286
NCHANNELS: 50
pfbDECIM: 17
totDECIM: 112
linux; GNU C++ version 4.8.2; Boost_105400; UHD_003.008.000-18-g864f84b5

-- Opening a USRP1 device...
-- Using FPGA clock rate of 52.000000MHz...
-- Tune Request: 939.200000 MHz
-- The RF LO does not support the requested frequency:
-- Requested LO Frequency: 939.200000 MHz
-- RF LO Result: 939.250000 MHz
-- Attempted to use the DSP to reach the requested frequency:
-- Desired DSP Frequency: 0.050000 MHz
-- DSP Result: 0.050000 MHz
-- Successfully tuned to 939.200000 MHz
--
out/out.cf: No such file or directory
Traceback (most recent call last):
File "/usr/local/bin/uhd_rx_cfile", line 215, in <module>
tb = rx_cfile_block(options, filename)
File "/usr/local/bin/uhd_rx_cfile", line 104, in __init__
self._sink = blocks.file_sink(gr.sizeof_gr_complex, filename)
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/blocks/blocks_swig0.py", line
920, in make
return _blocks_swig0.file_sink_make(*args, **kwargs)
RuntimeError: can't open file
Number of taps: 211
Number of channels: 50
Taps per channel: 5.0
pfb oversampling: 2.94117647059
Using Volk machine: sse4_a_64_orc
./out/out.cf: No such file or directory
Traceback (most recent call last):
File "./channelize2.py", line 101, in <module>
main()
File "./channelize2.py", line 93, in main
tb = pfb_top_block()
File "./channelize2.py", line 67, in __init__
self.input = blocks.file_source(gr.sizeof_gr_complex,
"./out/out.cf", False);
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/blocks/blocks_swig0.py", line
984, in make
return _blocks_swig0.file_source_make(*args, **kwargs)
RuntimeError: can't open file
sps: 0.428571428571
c0pos 0
out/out_18.cf: No such file or directory
Traceback (most recent call last):
File "./gsm_receive100_channelize.py", line 147, in <module>
main()
File "./gsm_receive100_channelize.py", line 142, in main
gsm_receiver_first_blood().run()
File "./gsm_receive100_channelize.py", line 50, in __init__
self.sources.append(self._set_source(ifile))
File "./gsm_receive100_channelize.py", line 72, in _set_source
zrodlo = blocks.file_source(gr.sizeof_gr_complex, nazwa_pliku, False)
File
"/usr/local/lib/python2.7/dist-packages/gnuradio/blocks/blocks_swig0.py", line
984, in make
return _blocks_swig0.file_source_make(*args, **kwargs)
RuntimeError: can't open file

I am trying this with USRP1 and my clock frequency is changed to 52mhz.
Can someone please tell me what need to change.
Tom
Pedro Cabrera
2014-12-22 12:18:20 UTC
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