#!/usr/bin/env python

#

# Copyright 2008,2009,2011,2012 Free Software Foundation, Inc.

# 

# This file is part of GNU Radio

# 

# GNU Radio is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3, or (at your option)

# any later version.

# 

# GNU Radio is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

# 

# You should have received a copy of the GNU General Public License

# along with GNU Radio; see the file COPYING.  If not, write to

# the Free Software Foundation, Inc., 51 Franklin Street,

# Boston, MA 02110-1301, USA.

# 

from gnuradio import gr

from gnuradio import uhd_siggen

import sys

def main():

    if gr.enable_realtime_scheduling() != gr.RT_OK:

        print "Note: failed to enable realtime scheduling, continuing"

    # Grab command line options and create top block

    try:

        (options, args) = uhd_siggen.get_options()

        tb = uhd_siggen.top_block(options, args)

    except RuntimeError, e:

        print e

        sys.exit(1)

    tb.start()

    raw_input('Press Enter to quit: ')

    tb.stop()

    tb.wait()

# Make sure to create the top block (tb) within a function:

# That code in main will allow tb to go out of scope on return,

# which will call the decontructor on usrp and stop transmit.

# Whats odd is that grc works fine with tb in the __main__,

# perhaps its because the try/except clauses around tb.

if __name__ == "__main__":

    main()