On Mon, 2009-01-26 at 17:04 +1300, Muhammad Abrar wrote:
> when i run this program ithe following ewrror appears, how can i resolve this.
> Nameerror: microtune_eval_board is not defined at line 70:
>
> #!/usr/bin/env python
>
> # simple broadcast FM receiver
>
>
> from GnuRadio import *
>
> #
> # return a gr_FlowGraph
> #
> def build_graph (IF_freq):
> input_rate = 20e6
>
> CFIR_decimate = 125
> RFIR_decimate = 5
> fm_demod_gain = 2200
>
> quad_rate = input_rate / CFIR_decimate
>
> audio_rate = quad_rate / RFIR_decimate
>
> volume = 1.0
>
> src = GrHighSpeedADCSourceS (input_rate)
>
> # compute FIR filter taps for channel selection
> channel_coeffs = \
> gr_firdes.low_pass (
>
> 1.0, # gain
> input_rate, # sampling rate
> 250e3, # low pass cutoff freq
> 8*100e3, # width of trans. band
> gr_firdes.WIN_HAMMING)
>
> # input: short; output: complex
>
> chan_filter = \
> GrFreqXlatingFIRfilterSCF (CFIR_decimate,
> channel_coeffs,
> IF_freq)
> # input: complex; output: float
> fm_demod = \
>
> GrQuadratureDemodCF (volume * fm_demod_gain)
>
> # compute FIR filter taps for audio filter
> width_of_transition_band = audio_rate / 32
> audio_coeffs = \
> gr_firdes.low_pass (
> 1.0, # gain
>
> quad_rate, # sampling rate
> audio_rate/2 - width_of_transition_band,
> width_of_transition_band,
> gr_firdes.WIN_HAMMING)
>
> # input: float; output: short
> audio_filter = \
>
> GrFIRfilterFSF (RFIR_decimate, audio_coeffs)
>
> final_sink = GrAudioSinkS ()
>
> fg = gr_FlowGraph ()
>
> fg.connect (src, chan_filter)
> fg.connect (chan_filter, fm_demod)
> fg.connect (fm_demod, audio_filter)
>
> fg.connect (audio_filter, final_sink)
>
> return fg
>
> if __name__ == '__main__':
>
> # connect to RF front end
> rf_front_end = microtune_eval_board ()
> if not rf_front_end.board_present_p ():
>
> raise IOError, 'RF front end not found'
>
> # set gain and radio station frequency
> rf_front_end.set_AGC (300)
> rf_front_end.set_RF_freq (100.1e6)
>
> IF_freq = rf_front_end.get_output_freq ()
>
> fg = build_graph (IF_freq)
> fg.start () # fork thread(s) and return
> raw_input ('Press Enter to quit: ')
> fg.stop ()
>
>
You are using a very very old version of gnuradio.
Please update to the current tarball or svn code:
http://gnuradio.org/trac/wiki/Download
http://gnuradio.org/trac/wiki/GettingStarted
Greetings,
Martin
> --
> Engr. Muhammad Abrar
> NewZealand
> Mob: 0064211204202
> Res: 006463586340
> _______________________________________________
> Discuss-gnuradio mailing list
> Discuss-gnuradio@gnu.org
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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