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#
# Copyright 2005 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 2, 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
import usrp_dbid
import db_base
import db_instantiator
class db_basic_tx(db_base.db_base):
def __init__(self, usrp, which):
"""
Handler for Basic Tx daughterboards.
@param usrp: instance of usrp.source_c
@param which: which side: 0 or 1 corresponding to TX_A or TX_B respectively
"""
# sets _u and _which
db_base.db_base.__init__(self, usrp, which)
if 0: # Doing this would give us a different default than the historical values...
g = self.gain_range() # initialize gain
self.set_gain(float(g[0]+g[1]) / 2)
def freq_range(self):
"""
Return range of frequencies in Hz that can be tuned by this d'board.
@returns (min_freq, max_freq, step_size)
@rtype tuple
We say we can do pretty much anything...
"""
return (-90e9, 90e9, 1e-6)
def set_freq(self, target_freq):
"""
Set the frequency.
@param freq: target RF frequency in Hz
@type freq: float
@returns (ok, actual_baseband_freq) where:
ok is True or False and indicates success or failure,
actual_baseband_freq is the RF frequency that corresponds to DC in the IF.
"""
return (True, 0)
def gain_range(self):
"""
Return range of gain that can be set by this d'board.
@returns (min_gain, max_gain, step_size)
Where gains are expressed in decibels (your mileage may vary)
"""
return (self._u.pga_min(), self._u.pga_max(), self._u.pga_db_per_step())
def set_gain(self, gain):
"""
Set the gain.
@param gain: gain in decibels
@returns True/False
"""
ok = self._u.set_pga(self._which * 2 + 0, gain)
ok = ok and self._u.set_pga(self._which * 2 + 1, gain)
return ok
def is_quadrature(self):
"""
Return True if this board requires both I & Q analog channels.
"""
return True
class db_basic_rx(db_base.db_base):
def __init__(self, usrp, which, subdev):
"""
Handler for Basic Rx daughterboards.
@param usrp: instance of usrp.source_c
@param which: which side: 0 or 1 corresponding to RX_A or RX_B respectively
@param subdev: which analog i/o channel: 0 or 1
@type subdev: int
"""
# sets _u and _which
db_base.db_base.__init__(self, usrp, which)
self._subdev = subdev
self.bypass_adc_buffers(True)
if 0: # Doing this would give us a different default than the historical values...
g = self.gain_range() # initialize gain
self.set_gain(float(g[0]+g[1]) / 2)
def freq_range(self):
"""
Return range of frequencies in Hz that can be tuned by this d'board.
@returns (min_freq, max_freq, step_size)
@rtype tuple
We say we can do pretty much anything...
"""
return (0, 90e9, 1e-6)
def set_freq(self, target_freq):
"""
Set the frequency.
@param freq: target RF frequency in Hz
@type freq: float
@returns (ok, actual_baseband_freq) where:
ok is True or False and indicates success or failure,
actual_baseband_freq is the RF frequency that corresponds to DC in the IF.
"""
return (True, 0)
def gain_range(self):
"""
Return range of gain that can be set by this d'board.
@returns (min_gain, max_gain, step_size)
Where gains are expressed in decibels (your mileage may vary)
"""
return (self._u.pga_min(), self._u.pga_max(), self._u.pga_db_per_step())
def set_gain(self, gain):
"""
Set the gain.
@param gain: gain in decibels
@returns True/False
"""
return self._u.set_pga(self._which * 2 + self._subdev, gain)
def is_quadrature(self):
"""
Return True if this board requires both I & Q analog channels.
This bit of info is useful when setting up the USRP Rx mux register.
"""
return False
class db_lf_rx(db_basic_rx):
def __init__(self, usrp, which, subdev):
"""
Handler for Low Freq Rx daughterboards.
@param usrp: instance of usrp.source_c
@param which: which side: 0 or 1 corresponding to RX_A or RX_B respectively
@param subdev: which analog i/o channel: 0 or 1
@type subdev: int
"""
# sets _u and _which
db_basic_rx.__init__(self, usrp, which, subdev)
def freq_range(self):
"""
Return range of frequencies in Hz that can be tuned by this d'board.
@returns (min_freq, max_freq, step_size)
@rtype tuple
We cover the first nyquist zone only
"""
return (0, 32e6, 1e-6)
class db_lf_tx(db_basic_tx):
def __init__(self, usrp, which):
"""
Handler for Low Freq Tx daughterboards.
@param usrp: instance of usrp.source_c
@param which: which side: 0 or 1 corresponding to RX_A or RX_B respectively
"""
# sets _u and _which
db_basic_tx.__init__(self, usrp, which)
def freq_range(self):
"""
Return range of frequencies in Hz that can be tuned by this d'board.
@returns (min_freq, max_freq, step_size)
@rtype tuple
We cover the first nyquist zone only
"""
return (-32e6, 32e6, 1e-6)
# hook these daughterboard classes into the auto-instantiation framework
def _basic_rx_instantiator(usrp, which):
# two single channel subdevices
return (db_basic_rx(usrp, which, 0), db_basic_rx(usrp, which, 1))
def _lf_rx_instantiator(usrp, which):
# two single channel subdevices
return (db_lf_rx(usrp, which, 0), db_lf_rx(usrp, which, 1))
def _basic_tx_instantiator(usrp, which):
# one quadrature subdevice
return (db_basic_tx(usrp, which),)
def _lf_tx_instantiator(usrp, which):
# one quadrature subdevice
return (db_lf_tx(usrp, which),)
def _no_db_instantiator(usrp, which):
if hasattr(usrp, 'tx_freq'): # is this a tx or rx daughterboard?
return (_basic_tx_instantiator(usrp, which))
else:
return (_basic_rx_instantiator(usrp, which))
def _invalid_instantiator(usrp, which):
if hasattr(usrp, 'tx_freq'): # is this a tx or rx daughterboard?
sys.stderr.write('\n\aWarning: Treating daughterboard with invalid EEPROM contents as if it were a "Basic Tx."\n')
sys.stderr.write('Warning: This is almost certainly wrong... Use appropriate burn-*-eeprom utility.\n\n')
return _basic_tx_instantiator(usrp, which)
else:
sys.stderr.write('\n\aWarning: Treating daughterboard with invalid EEPROM contents as if it were a "Basic Rx."\n')
sys.stderr.write('Warning: This is almost certainly wrong... Use appropriate burn-*-eeprom utility.\n\n')
return _basic_rx_instantiator(usrp, which)
db_instantiator.add(-1, _no_db_instantiator) # no daughterboard
db_instantiator.add(-2, _invalid_instantiator) # invalid eeprom contents
db_instantiator.add(usrp_dbid.BASIC_TX, _basic_tx_instantiator)
db_instantiator.add(usrp_dbid.BASIC_RX, _basic_rx_instantiator)
db_instantiator.add(usrp_dbid.LF_TX, _lf_tx_instantiator)
db_instantiator.add(usrp_dbid.LF_RX, _lf_rx_instantiator)
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