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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Trx radio interface
# Author: (C) Piotr Krysik 2017
# Description: Alpha version of trx radio interface
# Generated: Fri Dec 1 10:49:25 2017
##################################################
from dict_toggle_sign import dict_toggle_sign
from gnuradio import blocks
from gnuradio import digital
from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
from gnuradio import uhd
from gnuradio.eng_option import eng_option
from gnuradio.filter import firdes
from grgsm import gsm_gmsk_mod
from optparse import OptionParser
import grgsm
import math
import time
class radio_if_grc(gr.top_block):
def __init__(self, delay_correction=285.616e-6, osr=4, ppm=-0.799427, rx_freq=935e6+36*0.2e6, rx_gain=40, samp_rate=13e6/12.0, timing_advance=0, trx_base_port="5710", trx_remote_addr="127.0.0.1", tx_freq=935e6+36*0.2e6-45e6, tx_gain=40, uplink_shift=-(6.0/1625000*(156.25)*3)):
gr.top_block.__init__(self, "Trx radio interface")
##################################################
# Parameters
##################################################
self.delay_correction = delay_correction
self.osr = osr
self.ppm = ppm
self.rx_freq = rx_freq
self.rx_gain = rx_gain
self.samp_rate = samp_rate
self.timing_advance = timing_advance
self.trx_base_port = trx_base_port
self.trx_remote_addr = trx_remote_addr
self.tx_freq = tx_freq
self.tx_gain = tx_gain
self.uplink_shift = uplink_shift
##################################################
# Blocks
##################################################
self.uhd_usrp_source_0 = uhd.usrp_source(
",".join(("", "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.uhd_usrp_source_0.set_clock_rate(26e6, uhd.ALL_MBOARDS)
self.uhd_usrp_source_0.set_samp_rate(samp_rate)
self.uhd_usrp_source_0.set_center_freq(rx_freq, 0)
self.uhd_usrp_source_0.set_gain(rx_gain, 0)
self.uhd_usrp_source_0.set_antenna("RX2", 0)
self.uhd_usrp_sink_0 = uhd.usrp_sink(
",".join(("", "")),
uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
"packet_len",
)
self.uhd_usrp_sink_0.set_clock_rate(26e6, uhd.ALL_MBOARDS)
self.uhd_usrp_sink_0.set_subdev_spec("A:B", 0)
self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
self.uhd_usrp_sink_0.set_center_freq(tx_freq, 0)
self.uhd_usrp_sink_0.set_gain(tx_gain, 0)
self.uhd_usrp_sink_0.set_antenna("TX/RX", 0)
self.ts_filter = grgsm.burst_timeslot_filter(0)
self.low_pass_filter_0_0 = filter.fir_filter_ccf(1, firdes.low_pass(
1, samp_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76))
self.gsm_txtime_setter_0 = grgsm.txtime_setter(None if (None is not None) else 0xffffffff, 0, 0, 0, 0, timing_advance, delay_correction+uplink_shift)
self.gsm_trx_burst_if_0 = grgsm.trx_burst_if(trx_remote_addr, trx_base_port)
self.gsm_receiver_0 = grgsm.receiver(4, ([0]), ([4]), False)
self.gsm_preprocess_tx_burst_0 = grgsm.preprocess_tx_burst()
self.gsm_msg_to_tag_0_0 = grgsm.msg_to_tag()
self.gsm_msg_to_tag_0 = grgsm.msg_to_tag()
self.gsm_gmsk_mod_0 = gsm_gmsk_mod(
BT=0.3,
pulse_duration=4,
sps=osr,
)
self.gsm_controlled_rotator_cc_0_0 = grgsm.controlled_rotator_cc(-ppm/1.0e6*2*math.pi*tx_freq/samp_rate)
self.gsm_controlled_rotator_cc_0 = grgsm.controlled_rotator_cc(ppm/1.0e6*2*math.pi*rx_freq/samp_rate)
self.gsm_clock_offset_control_0 = grgsm.clock_offset_control(rx_freq, samp_rate, osr)
self.gsm_burst_type_filter_0 = grgsm.burst_type_filter(([3]))
self.gsm_burst_to_fn_time_0 = grgsm.burst_to_fn_time()
self.digital_burst_shaper_xx_0 = digital.burst_shaper_cc((firdes.window(firdes.WIN_HANN, 16, 0)), 0, 20, False, "packet_len")
self.dict_toggle_sign = dict_toggle_sign()
self.blocks_pdu_to_tagged_stream_0_0 = blocks.pdu_to_tagged_stream(blocks.byte_t, "packet_len")
##################################################
# Connections
##################################################
self.msg_connect((self.dict_toggle_sign, 'dict_out'), (self.gsm_msg_to_tag_0_0, 'msg'))
self.msg_connect((self.gsm_burst_to_fn_time_0, 'fn_time_out'), (self.gsm_txtime_setter_0, 'fn_time'))
self.msg_connect((self.gsm_burst_type_filter_0, 'bursts_out'), (self.gsm_burst_to_fn_time_0, 'bursts_in'))
self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.dict_toggle_sign, 'dict_in'))
self.msg_connect((self.gsm_clock_offset_control_0, 'ctrl'), (self.gsm_msg_to_tag_0, 'msg'))
self.msg_connect((self.gsm_preprocess_tx_burst_0, 'bursts_out'), (self.blocks_pdu_to_tagged_stream_0_0, 'pdus'))
self.msg_connect((self.gsm_receiver_0, 'C0'), (self.gsm_burst_type_filter_0, 'bursts_in'))
self.msg_connect((self.gsm_receiver_0, 'measurements'), (self.gsm_clock_offset_control_0, 'measurements'))
self.msg_connect((self.gsm_receiver_0, 'C0'), (self.ts_filter, 'in'))
self.msg_connect((self.gsm_trx_burst_if_0, 'bursts'), (self.gsm_txtime_setter_0, 'bursts_in'))
self.msg_connect((self.gsm_txtime_setter_0, 'bursts_out'), (self.gsm_preprocess_tx_burst_0, 'bursts_in'))
self.msg_connect((self.ts_filter, 'out'), (self.gsm_trx_burst_if_0, 'bursts'))
self.connect((self.blocks_pdu_to_tagged_stream_0_0, 0), (self.gsm_gmsk_mod_0, 0))
self.connect((self.digital_burst_shaper_xx_0, 0), (self.gsm_msg_to_tag_0_0, 0))
self.connect((self.gsm_controlled_rotator_cc_0, 0), (self.low_pass_filter_0_0, 0))
self.connect((self.gsm_controlled_rotator_cc_0_0, 0), (self.uhd_usrp_sink_0, 0))
self.connect((self.gsm_gmsk_mod_0, 0), (self.digital_burst_shaper_xx_0, 0))
self.connect((self.gsm_msg_to_tag_0, 0), (self.gsm_controlled_rotator_cc_0, 0))
self.connect((self.gsm_msg_to_tag_0_0, 0), (self.gsm_controlled_rotator_cc_0_0, 0))
self.connect((self.low_pass_filter_0_0, 0), (self.gsm_receiver_0, 0))
self.connect((self.uhd_usrp_source_0, 0), (self.gsm_msg_to_tag_0, 0))
def get_delay_correction(self):
return self.delay_correction
def set_delay_correction(self, delay_correction):
self.delay_correction = delay_correction
self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift)
def get_osr(self):
return self.osr
def set_osr(self, osr):
self.osr = osr
self.gsm_gmsk_mod_0.set_sps(self.osr)
def get_ppm(self):
return self.ppm
def set_ppm(self, ppm):
self.ppm = ppm
self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate)
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
def get_rx_freq(self):
return self.rx_freq
def set_rx_freq(self, rx_freq):
self.rx_freq = rx_freq
self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate)
self.uhd_usrp_source_0.set_center_freq(self.rx_freq, 0)
def get_rx_gain(self):
return self.rx_gain
def set_rx_gain(self, rx_gain):
self.rx_gain = rx_gain
self.uhd_usrp_source_0.set_gain(self.rx_gain, 0)
def get_samp_rate(self):
return self.samp_rate
def set_samp_rate(self, samp_rate):
self.samp_rate = samp_rate
self.gsm_controlled_rotator_cc_0.set_phase_inc(self.ppm/1.0e6*2*math.pi*self.rx_freq/self.samp_rate)
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.samp_rate, 125e3, 5e3, firdes.WIN_HAMMING, 6.76))
self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
def get_timing_advance(self):
return self.timing_advance
def set_timing_advance(self, timing_advance):
self.timing_advance = timing_advance
self.gsm_txtime_setter_0.set_timing_advance(self.timing_advance)
def get_trx_base_port(self):
return self.trx_base_port
def set_trx_base_port(self, trx_base_port):
self.trx_base_port = trx_base_port
def get_trx_remote_addr(self):
return self.trx_remote_addr
def set_trx_remote_addr(self, trx_remote_addr):
self.trx_remote_addr = trx_remote_addr
def get_tx_freq(self):
return self.tx_freq
def set_tx_freq(self, tx_freq):
self.tx_freq = tx_freq
self.gsm_controlled_rotator_cc_0_0.set_phase_inc(-self.ppm/1.0e6*2*math.pi*self.tx_freq/self.samp_rate)
self.uhd_usrp_sink_0.set_center_freq(self.tx_freq, 0)
def get_tx_gain(self):
return self.tx_gain
def set_tx_gain(self, tx_gain):
self.tx_gain = tx_gain
self.uhd_usrp_sink_0.set_gain(self.tx_gain, 0)
def get_uplink_shift(self):
return self.uplink_shift
def set_uplink_shift(self, uplink_shift):
self.uplink_shift = uplink_shift
self.gsm_txtime_setter_0.set_delay_correction(self.delay_correction+self.uplink_shift)
def argument_parser():
parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
parser.add_option(
"", "--delay-correction", dest="delay_correction", type="eng_float", default=eng_notation.num_to_str(285.616e-6),
help="Set delay_correction [default=%default]")
parser.add_option(
"", "--osr", dest="osr", type="intx", default=4,
help="Set OSR [default=%default]")
parser.add_option(
"", "--ppm", dest="ppm", type="eng_float", default=eng_notation.num_to_str(-0.799427),
help="Set Clock offset correction [default=%default]")
parser.add_option(
"-d", "--rx-freq", dest="rx_freq", type="eng_float", default=eng_notation.num_to_str(935e6+36*0.2e6),
help="Set rx_freq [default=%default]")
parser.add_option(
"-g", "--rx-gain", dest="rx_gain", type="eng_float", default=eng_notation.num_to_str(40),
help="Set rx_gain [default=%default]")
parser.add_option(
"", "--samp-rate", dest="samp_rate", type="eng_float", default=eng_notation.num_to_str(13e6/12.0),
help="Set samp_rate [default=%default]")
parser.add_option(
"", "--timing-advance", dest="timing_advance", type="eng_float", default=eng_notation.num_to_str(0),
help="Set timing_advance [default=%default]")
parser.add_option(
"", "--trx-base-port", dest="trx_base_port", type="string", default="5710",
help="Set 5710 [default=%default]")
parser.add_option(
"", "--trx-remote-addr", dest="trx_remote_addr", type="string", default="127.0.0.1",
help="Set 127.0.0.1 [default=%default]")
parser.add_option(
"-u", "--tx-freq", dest="tx_freq", type="eng_float", default=eng_notation.num_to_str(935e6+36*0.2e6-45e6),
help="Set tx_freq [default=%default]")
parser.add_option(
"-r", "--tx-gain", dest="tx_gain", type="eng_float", default=eng_notation.num_to_str(40),
help="Set tx_gain [default=%default]")
parser.add_option(
"", "--uplink-shift", dest="uplink_shift", type="eng_float", default=eng_notation.num_to_str(-(6.0/1625000*(156.25)*3)),
help="Set uplink_shift [default=%default]")
return parser
def main(top_block_cls=radio_if_grc, options=None):
if options is None:
options, _ = argument_parser().parse_args()
tb = top_block_cls(delay_correction=options.delay_correction, osr=options.osr, ppm=options.ppm, rx_freq=options.rx_freq, rx_gain=options.rx_gain, samp_rate=options.samp_rate, timing_advance=options.timing_advance, trx_base_port=options.trx_base_port, trx_remote_addr=options.trx_remote_addr, tx_freq=options.tx_freq, tx_gain=options.tx_gain, uplink_shift=options.uplink_shift)
tb.start()
tb.wait()
if __name__ == '__main__':
main()
|
