rtl-sdr_source_to_file_meta_sink.py

#!/usr/bin/env python2
##################################################
# GNU Radio Python Flow Graph
# Title: Top Block
# Generated: Tue Dec 22 16:32:04 2015
##################################################

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


class top_block(gr.top_block):

    def __init__(self):
        gr.top_block.__init__(self, "Top Block")

        ##################################################
        # Variables
        ##################################################
        self.time = time = 60
        self.samp_rate = samp_rate = 2e6
        self.freq = freq = 868e6

        ##################################################
        # Blocks
        ##################################################
        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" )
        self.rtlsdr_source_0.set_sample_rate(samp_rate)
        self.rtlsdr_source_0.set_center_freq(freq, 0)
        self.rtlsdr_source_0.set_freq_corr(0, 0)
        self.rtlsdr_source_0.set_dc_offset_mode(0, 0)
        self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
        self.rtlsdr_source_0.set_gain_mode(False, 0)
        self.rtlsdr_source_0.set_gain(0, 0)
        self.rtlsdr_source_0.set_if_gain(20, 0)
        self.rtlsdr_source_0.set_bb_gain(20, 0)
        self.rtlsdr_source_0.set_antenna("", 0)
        self.rtlsdr_source_0.set_bandwidth(0, 0)

        self.blocks_head_0 = blocks.head(gr.sizeof_gr_complex*1, int(samp_rate)*time)
        self.blocks_file_meta_sink_0 = blocks.file_meta_sink(gr.sizeof_gr_complex*1, "bla", samp_rate, 1, blocks.GR_FILE_FLOAT, True, 1000000, "", False)
        self.blocks_file_meta_sink_0.set_unbuffered(False)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.blocks_head_0, 0), (self.blocks_file_meta_sink_0, 0))
        self.connect((self.rtlsdr_source_0, 0), (self.blocks_head_0, 0))


    def get_time(self):
        return self.time

    def set_time(self, time):
        self.time = time
        self.blocks_head_0.set_length(int(self.samp_rate)*self.time)

    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.blocks_head_0.set_length(int(self.samp_rate)*self.time)
        self.rtlsdr_source_0.set_sample_rate(self.samp_rate)

    def get_freq(self):
        return self.freq

    def set_freq(self, freq):
        self.freq = freq
        self.rtlsdr_source_0.set_center_freq(self.freq, 0)


if __name__ == '__main__':
    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
    (options, args) = parser.parse_args()
    tb = top_block()
    tb.start()
    try:
        raw_input('Press Enter to quit: ')
    except EOFError:
        pass
    tb.stop()
    tb.wait()