#!/usr/bin/env python2
##################################################
# GNU Radio Python Flow Graph
# Title: Add Const Performance
# Generated: Sun Mar  6 15:18:22 2016
##################################################

from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import gr
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from optparse import OptionParser


class add_const_performance(gr.top_block):

    def __init__(self):
        gr.top_block.__init__(self, "Add Const Performance")

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 160e6

        ##################################################
        # Blocks
        ##################################################
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_short*1, samp_rate,True)
        self.blocks_null_source_0 = blocks.null_source(gr.sizeof_short*1)
        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_short*1)
        self.blocks_add_const_vxx_0 = blocks.add_const_vss((515, ))
        #self.blocks_add_const_vxx_0 = blocks.add_const_ss(515)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.blocks_add_const_vxx_0, 0), (self.blocks_null_sink_0, 0))    
        self.connect((self.blocks_null_source_0, 0), (self.blocks_throttle_0, 0))    
        self.connect((self.blocks_throttle_0, 0), (self.blocks_add_const_vxx_0, 0))    


    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.blocks_throttle_0.set_sample_rate(self.samp_rate)


if __name__ == '__main__':
    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
    (options, args) = parser.parse_args()
    if gr.enable_realtime_scheduling() != gr.RT_OK:
        print "Error: failed to enable realtime scheduling."
    tb = add_const_performance()
    tb.start()
    try:
        raw_input('Press Enter to quit: ')
    except EOFError:
        pass
    tb.stop()
    tb.wait()