1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
#!/usr/bin/env python
#
# Copyright 2004,2007,2011 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.
#
"""
Setup USRP for maximum power consumption.
"""
from gnuradio import gr
from gnuradio import uhd
from gnuradio.eng_option import eng_option
from optparse import OptionParser
from gnuradio import eng_notation
n2s = eng_notation.num_to_str
# Set this to a huge number; UHD will adjust to the
# maximum the USRP xxxx device can handle
MAX_RATE = 1000e6
class build_block(gr.top_block):
def __init__(self, address, tx_enable, rx_enable):
gr.top_block.__init__(self)
d = uhd.device_find(uhd.device_addr(address))
uhd_type = d[0].get('type')
print "\nFound '%s' at address '%s'" % \
(uhd_type, address)
# Test the type of USRP; if it's a USRP (v1), it has
# 2 channels; otherwise, it has 1 channel
if uhd_type == "usrp":
tx_nchan = 2
rx_nchan = 2
else:
tx_nchan = 1
rx_nchan = 1
if tx_enable:
print "\nTRANSMIT CHAIN"
self.u_tx = uhd.usrp_sink(device_addr=address,
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=tx_nchan)
self.u_tx.set_samp_rate(MAX_RATE)
self.tx_src0 = gr.sig_source_c(self.u_tx.get_samp_rate(),
gr.GR_CONST_WAVE,
0, 1.0, 0)
# Get dboard gain range and select maximum
tx_gain_range = self.u_tx.get_gain_range()
tx_gain = tx_gain_range.stop()
# Get dboard freq range and select midpoint
tx_freq_range = self.u_tx.get_freq_range()
tx_freq_mid = (tx_freq_range.start() + tx_freq_range.stop())/2.0
for i in xrange(tx_nchan):
self.u_tx.set_center_freq (tx_freq_mid + i*1e6, i)
self.u_tx.set_gain(tx_gain, i)
print "\nTx Sample Rate: %ssps" % (n2s(self.u_tx.get_samp_rate()))
for i in xrange(tx_nchan):
print "Tx Channel %d: " % (i)
print "\tFrequency = %sHz" % \
(n2s(self.u_tx.get_center_freq(i)))
print "\tGain = %f dB" % (self.u_tx.get_gain(i))
print ""
self.connect (self.tx_src0, self.u_tx)
if rx_enable:
print "\nRECEIVE CHAIN"
self.u_rx = uhd.usrp_source(device_addr=address,
io_type=uhd.io_type.COMPLEX_FLOAT32,
num_channels=rx_nchan)
self.rx_dst0 = gr.null_sink (gr.sizeof_gr_complex)
self.u_rx.set_samp_rate(MAX_RATE)
# Get dboard gain range and select maximum
rx_gain_range = self.u_rx.get_gain_range()
rx_gain = rx_gain_range.stop()
# Get dboard freq range and select midpoint
rx_freq_range = self.u_rx.get_freq_range()
rx_freq_mid = (rx_freq_range.start() + rx_freq_range.stop())/2.0
for i in xrange(tx_nchan):
self.u_rx.set_center_freq (rx_freq_mid + i*1e6, i)
self.u_rx.set_gain(rx_gain, i)
print "\nRx Sample Rate: %ssps" % (n2s(self.u_rx.get_samp_rate()))
for i in xrange(rx_nchan):
print "Rx Channel %d: " % (i)
print "\tFrequency = %sHz" % \
(n2s(self.u_rx.get_center_freq(i)))
print "\tGain = %f dB" % (self.u_rx.get_gain(i))
print ""
self.connect (self.u_rx, self.rx_dst0)
def main ():
parser = OptionParser (option_class=eng_option)
parser.add_option("-a", "--address", type="string",
default="addr=192.168.10.2",
help="Address of UHD device, [default=%default]")
parser.add_option("-t", action="store_true", dest="tx_enable",
default=False, help="enable Tx path")
parser.add_option("-r", action="store_true", dest="rx_enable",
default=False, help="enable Rx path")
(options, args) = parser.parse_args ()
tb = build_block (options.address, options.tx_enable, options.rx_enable)
tb.start ()
raw_input ('Press Enter to quit: ')
tb.stop ()
if __name__ == '__main__':
main ()
|
