git.gag.com Git - debian/gnuradio/blob - gnuradio-examples/python/apps/hf_radio/input.py

   1 # Basic USRP setup and control.
   2 # It's only ever been tried with a basic rx daughter card.
   3 #
   4 # Imagine that the gnuradio boilerplate is here.
   5 #
   6 # M. Revnell 2005-Dec
   7
   8 from gnuradio import gr, gru, optfir
   9 from gnuradio import usrp
  10 from usrpm import usrp_dbid
  11 import math
  12
  13 # Put special knowlege of usrp here.
  14
  15 class input:
  16     def __init__( self, decim ):
  17         self.freq = -2.5e6
  18         self.src = usrp.source_c( )
  19         self.subdev = usrp.pick_subdev( self.src,
  20                                         (usrp_dbid.BASIC_RX,
  21                                          usrp_dbid.TV_RX,
  22                                          usrp_dbid.TV_RX_REV_2,
  23                                          usrp_dbid.TV_RX_REV_3,
  24                                          usrp_dbid.TV_RX_MIMO,
  25                                          usrp_dbid.TV_RX_REV_2_MIMO,
  26                                          usrp_dbid.TV_RX_REV_3_MIMO))
  27
  28         print self.subdev
  29
  30         self.subdevice = usrp.selected_subdev( self.src,
  31                                                self.subdev )
  32
  33         self.mux = usrp.determine_rx_mux_value( self.src,
  34                                                 self.subdev )
  35         self.decim = decim
  36
  37         self.adc_rate = self.src.adc_rate()
  38         self.usrp_rate = self.adc_rate / self.decim
  39         self.src.set_decim_rate( self.decim )
  40         self.src.set_mux( self.mux )
  41         usrp.tune( self.src, 0, self.subdevice, self.freq )
  42
  43     def set_freq( self, x ):
  44         r = usrp.tune( self.src, 0, self.subdevice, -x )
  45         if r:
  46             self.freq = -x