#
-# Copyright 2005,2006,2007 Free Software Foundation, Inc.
+# Copyright 2005,2006,2007,2009 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
# from current dir
from pick_bitrate import pick_tx_bitrate
+import usrp_options
# /////////////////////////////////////////////////////////////////////////////
# transmit path
options = copy.copy(options) # make a copy so we can destructively modify
- self._which = options.which # the USRP board attached
self._verbose = options.verbose
self._tx_freq = options.tx_freq # tranmitter's center frequency
self._tx_amplitude = options.tx_amplitude # digital amplitude sent to USRP
- self._tx_subdev_spec = options.tx_subdev_spec # daughterboard to use
self._bitrate = options.bitrate # desired bit rate
self._interp = options.interp # interpolating rate for the USRP (prelim)
self._samples_per_symbol = options.samples_per_symbol # desired samples/baud
- self._fusb_block_size = options.fusb_block_size # usb info for USRP
- self._fusb_nblocks = options.fusb_nblocks # usb info for USRP
self._use_whitener_offset = options.use_whitener_offset # increment start of whitener XOR data
self._modulator_class = modulator_class # the modulator_class we are using
raise SystemExit
# Set up USRP sink; also adjusts interp, samples_per_symbol, and bitrate
- self._setup_usrp_sink()
+ self._setup_usrp_sink(options)
+
+ if options.show_tx_ampl_range:
+ print "Tx Amplitude Range: minimum = %g, maximum = %g"%tuple(self.u.ampl_range())
# copy the final answers back into options for use by modulator
options.samples_per_symbol = self._samples_per_symbol
# Set the USRP for maximum transmit gain
# (Note that on the RFX cards this is a nop.)
- self.set_gain(self.subdev.gain_range()[1])
+ self.set_gain(self.u.gain_range()[1])
self.amp = gr.multiply_const_cc(1)
self.set_tx_amplitude(self._tx_amplitude)
- # enable Auto Transmit/Receive switching
- self.set_auto_tr(True)
-
# Display some information about the setup
if self._verbose:
self._print_verbage()
# Create and setup transmit path flow graph
self.connect(self.packet_transmitter, self.amp, self.u)
- def _setup_usrp_sink(self):
+ def _setup_usrp_sink(self, options):
"""
Creates a USRP sink, determines the settings for best bitrate,
and attaches to the transmitter's subdevice.
"""
- self.u = usrp.sink_c(self._which,
- fusb_block_size=self._fusb_block_size,
- fusb_nblocks=self._fusb_nblocks)
+ self.u = usrp_options.create_usrp_sink(options)
dac_rate = self.u.dac_rate();
# derive values of bitrate, samples_per_symbol, and interp from desired info
pick_tx_bitrate(self._bitrate, self._modulator_class.bits_per_symbol(),
self._samples_per_symbol, self._interp, dac_rate)
- self.u.set_interp_rate(self._interp)
-
- # determine the daughterboard subdevice we're using
- if self._tx_subdev_spec is None:
- self._tx_subdev_spec = usrp.pick_tx_subdevice(self.u)
- self.u.set_mux(usrp.determine_tx_mux_value(self.u, self._tx_subdev_spec))
- self.subdev = usrp.selected_subdev(self.u, self._tx_subdev_spec)
+ self.u.set_interp(self._interp)
def set_freq(self, target_freq):
the result of that operation and our target_frequency to
determine the value for the digital up converter.
"""
- r = self.u.tune(self.subdev.which(), self.subdev, target_freq)
- if r:
- return True
-
- return False
+ return self.u.set_center_freq(target_freq)
def set_gain(self, gain):
"""
Sets the analog gain in the USRP
"""
- self.gain = gain
- self.subdev.set_gain(gain)
+ return self.u.set_gain(gain)
def set_tx_amplitude(self, ampl):
"""
Sets the transmit amplitude sent to the USRP
- @param: ampl 0 <= ampl < 32768. Try 8000
+ @param ampl the amplitude or None for automatic
"""
- self._tx_amplitude = max(0.0, min(ampl, 32767.0))
+ ampl_range = self.u.ampl_range()
+ if ampl is None: ampl = (ampl_range[1] - ampl_range[0])*0.15 + ampl_range[0]
+ self._tx_amplitude = max(ampl_range[0], min(ampl, ampl_range[1]))
self.amp.set_k(self._tx_amplitude)
-
- def set_auto_tr(self, enable):
- """
- Turns on auto transmit/receive of USRP daughterboard (if exits; else ignored)
- """
- return self.subdev.set_auto_tr(enable)
-
+
def send_pkt(self, payload='', eof=False):
"""
Calls the transmitter method to send a packet
if not normal.has_option('--bitrate'):
normal.add_option("-r", "--bitrate", type="eng_float", default=None,
help="specify bitrate. samples-per-symbol and interp/decim will be derived.")
- normal.add_option("-w", "--which", type="int", default=0,
- help="select USRP board [default=%default]")
- normal.add_option("-T", "--tx-subdev-spec", type="subdev", default=None,
- help="select USRP Tx side A or B")
- normal.add_option("", "--tx-amplitude", type="eng_float", default=12000, metavar="AMPL",
- help="set transmitter digital amplitude: 0 <= AMPL < 32768 [default=%default]")
+ usrp_options.add_tx_options(normal, expert)
+ normal.add_option("--tx-amplitude", type="eng_float", default=None, metavar="AMPL",
+ help="set transmitter digital amplitude [default=midpoint]. See also --show-tx-ampl-range")
+ normal.add_option("--show-tx-ampl-range", action="store_true", default=False,
+ help="print min and max Tx amplitude available")
normal.add_option("-v", "--verbose", action="store_true", default=False)
-
expert.add_option("-S", "--samples-per-symbol", type="int", default=None,
help="set samples/symbol [default=%default]")
expert.add_option("", "--tx-freq", type="eng_float", default=None,
help="set transmit frequency to FREQ [default=%default]", metavar="FREQ")
- expert.add_option("-i", "--interp", type="intx", default=None,
- help="set fpga interpolation rate to INTERP [default=%default]")
expert.add_option("", "--log", action="store_true", default=False,
help="Log all parts of flow graph to file (CAUTION: lots of data)")
expert.add_option("","--use-whitener-offset", action="store_true", default=False,
"""
Prints information about the transmit path
"""
- print "Using TX d'board %s" % (self.subdev.side_and_name(),)
+ print "Using TX d'board %s" % (self.u,)
print "Tx amplitude %s" % (self._tx_amplitude)
print "modulation: %s" % (self._modulator_class.__name__)
print "bitrate: %sb/s" % (eng_notation.num_to_str(self._bitrate))
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