git.gag.com Git - debian/gnuradio/blob - gr-qtgui/src/python/qt_digital.py

   1 #!/usr/bin/env python
   2
   3 from gnuradio import gr, blks2
   4 from gnuradio.qtgui import qtgui
   5 import scipy
   6
   7 class my_top_block(gr.top_block):
   8     def __init__(self):
   9         gr.top_block.__init__(self)
  10
  11         sps = 2
  12         excess_bw = 0.35
  13         gray_code = True
  14
  15         fftsize = 2048
  16
  17         data = scipy.random.randint(0, 255, 1000)
  18         src = gr.vector_source_b(data, True)
  19         mod = blks2.dqpsk_mod(sps, excess_bw, gray_code, False, False)
  20
  21         rrctaps = gr.firdes.root_raised_cosine(1, sps, 1, excess_bw, 21)
  22         rx_rrc = gr.fir_filter_ccf(sps, rrctaps)
  23
  24         thr = gr.throttle(gr.sizeof_gr_complex, 10*fftsize)
  25         self.snk_tx = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, -1/2, 1/2)
  26         self.snk_rx = qtgui.sink_c(fftsize, gr.firdes.WIN_BLACKMAN_hARRIS, -1/2, 1/2)
  27
  28         self.connect(src, mod, self.snk_tx)
  29         self.connect(mod, rx_rrc, thr, self.snk_rx)
  30
  31         self.snk_tx.initialize()
  32         qapp = self.snk_tx.get_qapplication()
  33         self.snk_rx.initialize(qapp)
  34
  35 if __name__ == "__main__":
  36     tb = my_top_block();
  37     tb.start()
  38     tb.snk_tx.start_app();
  39     #tb.wait();
  40