Re: [Discuss-gnuradio] RunTime error in runtime_swig.py

[Marcus Müller]

Hi Sonny,

that's unusual. Can you run

gdb -ex run -ex bt --args python2 '/mymachine/sdr/gnuradioProjects/flowGraphsFromGRC/top_block.py'

and copy & paste the output backtrace? Ideally, we'd see *exactly* what crashes where.

Best regards,

Marcus

On 01/30/2017 08:12 PM, Sonny Rajagopalan wrote:

Hello,

I have a simple flow graph as shown (from this video tutorial http://greatscottgadgets.com/sdr/1/):

The *.py that is created is attached. The code crashes with the following error:

Generating: '/mymachine/sdr/gnuradioProjects/flowGraphsFromGRC/top_block.py'

Generating: '/mymachine/sdr/gnuradioProjects/flowGraphsFromGRC/top_block.py'

Executing: /usr/bin/python2 -u /mymachine/sdr/gnuradioProjects/flowGraphsFromGRC/top_block.py

linux; GNU C++ version 4.8.4; Boost_105400; UHD_3.11.0.git-59-g52ca2e0b

gr-osmosdr v0.1.x-xxx-xunknown (0.1.5git) gnuradio 3.7.10

built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy soapy redpitaya 

Number of USB devices: 13

USB device 1d50:6089: 0000000000000000909864c82c3a2fcf match

Using HackRF One with firmware 2015.07.2 

Traceback (most recent call last):

  File "/mymachine/sdr/gnuradioProjects/flowGraphsFromGRC/top_block.py", line 100, in <module>

    main()

  File "/mymachine/sdr/gnuradioProjects/flowGraphsFromGRC/top_block.py", line 95, in main

    tb.Start(True)

  File "/usr/local/lib/python2.7/dist-packages/grc_gnuradio/wxgui/top_block_gui.py", line 74, in Start

    self.start()

  File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 109, in start

    top_block_start_unlocked(self._impl, max_noutput_items)

  File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/runtime_swig.py", line 4879, in top_block_start_unlocked

    return _runtime_swig.top_block_start_unlocked(*args, **kwargs)

RuntimeError: list contains invalid format!

Gnuradio version: v3.7.10.1-182-g59136936, built using PyBOMBS; python2.7 and 3.4 on system. I know Cinaed said this is operator error, but some pointers for how to fixing this is appreciated.

Any insights into how this can be fixed is appreciated. I raised this issue with the HackRF people and they say it is better asked here.

Thanks,

Sonny.

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