Re: [Discuss-gnuradio] fusb: (rd status -2) No such file or directory

In your gnuradio generated code you use run() instead of start()
method and you forgot to put unlock().
After changing this it crashes with fusb error.

2011/5/27 Brett L. Trotter <blt@webtrotter.com>:
> Does this crash you?
>
> from gnuradio import eng_notation
> from gnuradio import gr
> from gnuradio.eng_option import eng_option
> from gnuradio.gr import firdes
> from grc_gnuradio import usrp as grc_usrp
> from optparse import OptionParser
>
> class crashme(gr.top_block):
>
>        def __init__(self):
>                gr.top_block.__init__(self, "Crashme")
>
>                ##################################################
>                # Variables
>                ##################################################
>                self.interp = interp = 64
>                self.decim = decim = 32
>                self.tx_rate = tx_rate = 128e6/interp
>                self.rx_rate = rx_rate = 64e6/decim
>                self.center_freq = center_freq = 1e6
>
>                ##################################################
>                # Blocks
>                ##################################################
>                self.usrp_simple_source_x_0 =
> grc_usrp.simple_source_c(which=0, side="A", rx_ant="RXAB")
>                self.usrp_simple_source_x_0.set_decim_rate(decim)
>                self.usrp_simple_source_x_0.set_frequency(center_freq,
> verbose=True)
>                self.usrp_simple_source_x_0.set_gain(0)
>                self.usrp_simple_sink_x_0 =
> grc_usrp.simple_sink_c(which=0, side="A")
>                self.usrp_simple_sink_x_0.set_interp_rate(interp)
>                self.usrp_simple_sink_x_0.set_frequency(center_freq,
> verbose=True)
>                self.usrp_simple_sink_x_0.set_gain(0)
>                self.gr_sig_source_x_0 = gr.sig_source_c(tx_rate,
> gr.GR_SIN_WAVE, 1000, 4000, 0)
>                self.gr_null_sink_0 = gr.null_sink(gr.sizeof_gr_complex*1)
>                self.gr_head_0_0 = gr.head(gr.sizeof_gr_complex*1, 3000000)
>                self.gr_head_0 = gr.head(gr.sizeof_gr_complex*1, 3000000)
>
>                ##################################################
>                # Connections
>                ##################################################
>                self.connect((self.gr_sig_source_x_0, 0),
> (self.gr_head_0, 0))
>                self.connect((self.gr_head_0, 0),
> (self.usrp_simple_sink_x_0, 0))
>                self.connect((self.usrp_simple_source_x_0, 0),
> (self.gr_head_0_0, 0))
>                self.connect((self.gr_head_0_0, 0),
> (self.gr_null_sink_0, 0))
>
> if __name__ == '__main__':
>        parser = OptionParser(option_class=eng_option, usage="%prog:
> [options]")
>        (options, args) = parser.parse_args()
>        tb = crashme()
>        tb.run()
>        print "Flowgraph finished, calling lock"
>        tb.lock()
>        print "Calling stop"
>        tb.stop()
>
>
>

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