diff options
Diffstat (limited to 'grc/src/grc_gnuradio/usrp/common.py')
| -rw-r--r-- | grc/src/grc_gnuradio/usrp/common.py | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/grc/src/grc_gnuradio/usrp/common.py b/grc/src/grc_gnuradio/usrp/common.py new file mode 100644 index 000000000..7c45c2604 --- /dev/null +++ b/grc/src/grc_gnuradio/usrp/common.py @@ -0,0 +1,71 @@ +# Copyright 2009 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. +# + +import sys +from gnuradio import usrp, gr + +################################################## +# Set frequency function w/ verbose option +################################################## +def set_frequency(u, which, subdev, frequency, verbose=False): + """ + Set the carrier frequency for the given subdevice. + @param u the usrp source/sink + @param which specifies the DDC/DUC number + @param frequency the carrier frequency in Hz + @param verbose if true, print usrp tuning information + """ + r = u.tune(which, subdev, frequency) + if not verbose: return + print subdev.side_and_name() + if r: + print "\tr.baseband_frequency =", r.baseband_freq + print "\tr.dxc_frequency =", r.dxc_freq + print "\tr.residual_frequency =", r.residual_freq + print "\tr.inverted =", r.inverted, "\n" + else: print >> sys.stderr, 'Error calling tune on subdevice.' + +################################################## +# Classes to associate usrp constructor w/ io size +################################################## +class usrp_helper(object): + def _get_usrp_constructor(self): return self._usrp_args[0] + def _get_io_size(self): return self._usrp_args[1] +class usrp_source_c(usrp_helper): _usrp_args = (usrp.source_c, gr.sizeof_gr_complex) +class usrp_source_s(usrp_helper): _usrp_args = (usrp.source_s, gr.sizeof_short) +class usrp_sink_c(usrp_helper): _usrp_args = (usrp.sink_c, gr.sizeof_gr_complex) +class usrp_sink_s(usrp_helper): _usrp_args = (usrp.sink_s, gr.sizeof_short) + +################################################## +# RX antenna definitions and helpers +################################################## +def is_flex(rx_ant): return rx_ant.upper() in ('TX/RX', 'RX2') +def to_spec(side, rx_ant='RXA'): + """ + Convert the side to a spec number. + @param side A or B + @param rx_ant antenna type + @return the spec (0/1, 0/1) + """ + try: return ( + {'A': 0, 'B': 1}[side.upper()], #side spec is 0 for A, 1 for B + rx_ant.upper() == 'RXB' and 1 or 0, #subdev spec is 1 for RXB + ) + except: raise ValueError, 'Side A or B expected.' |