Re: [Discuss-gnuradio] Filter error

[Michael Dickens]

Hi Sneha - You need to take a look at the command being issued (from the debugging traceback) in the file "/home/sneha/My_waveform/past work/transmit.py", line 250. The code is clearly is not setting the filter initialization parameters correctly! Without seeing your code I think nobody here can say much more. Hope this is useful! - MLD

On Wed, Jun 5, 2019, at 10:35 AM, Sneha vasan wrote:

Hi everyone,

Can anybody guide me on this???.. I am using x310 with sampling rate of 1MHz.

Traceback (most recent call last):

  File "/home/sneha/My_waveform/past work/transmit.py", line 414, in <module>

    main()

  File "/home/sneha/My_waveform/past work/transmit.py", line 402, in main

    tb = top_block_cls()

  File "/home/sneha/My_waveform/past work/transmit.py", line 250, in __init__

    callback=lambda ok, payload: self.digital_ofdm_demod_0.recv_pkt(ok, payload),

  File "/usr/local/lib/python2.7/dist-packages/gnuradio/digital/ofdm.py", line 223, in __init__

    options.log)

  File "/usr/local/lib/python2.7/dist-packages/gnuradio/digital/ofdm_receiver.py", line 78, in __init__

    filter.firdes.WIN_HAMMING)   # filter type

  File "/usr/local/lib/python2.7/dist-packages/gnuradio/filter/filter_swig.py", line 143, in low_pass

    return _filter_swig.firdes_low_pass(*args, **kwargs)

RuntimeError: firdes check failed: 0 < fa <= sampling_freq / 2

Regards,

Sneha

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