2 ##################################################
3 # Gnuradio Python Flow Graph
4 # Title: Usrp Rx Hrpt Nogui
5 # Generated: Sun Nov 1 19:32:32 2009
6 ##################################################
8 from gnuradio import eng_notation
9 from gnuradio import gr
10 from gnuradio import noaa
11 from gnuradio.eng_option import eng_option
12 from gnuradio.gr import firdes
13 from grc_gnuradio import usrp as grc_usrp
14 from optparse import OptionParser
18 class usrp_rx_hrpt_nogui(gr.top_block):
21 gr.top_block.__init__(self, "Usrp Rx Hrpt Nogui")
23 ##################################################
25 ##################################################
26 self.config_filename = config_filename = os.environ['HOME']+'/.gnuradio/config.conf'
27 self._decim_config = ConfigParser.ConfigParser()
28 self._decim_config.read(config_filename)
29 try: decim = self._decim_config.getfloat('usrp_rx_hrpt', 'decim')
32 self.sym_rate = sym_rate = 600*1109
33 self.sample_rate = sample_rate = 64e6/decim
34 self.sps = sps = sample_rate/sym_rate
35 self._side_config = ConfigParser.ConfigParser()
36 self._side_config.read(config_filename)
37 try: side = self._side_config.get('usrp_rx_hrpt', 'side')
40 self._pll_alpha_config = ConfigParser.ConfigParser()
41 self._pll_alpha_config.read(config_filename)
42 try: pll_alpha = self._pll_alpha_config.getfloat('usrp_rx_hrpt', 'pll_alpha')
43 except: pll_alpha = 0.05
44 self.pll_alpha = pll_alpha
45 self._output_filename_config = ConfigParser.ConfigParser()
46 self._output_filename_config.read(config_filename)
47 try: output_filename = self._output_filename_config.get('usrp_rx_hrpt', 'filename')
48 except: output_filename = 'frames.dat'
49 self.output_filename = output_filename
50 self.max_clock_offset = max_clock_offset = 0.1
51 self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate
52 self.hs = hs = int(sps/2.0)
53 self._gain_config = ConfigParser.ConfigParser()
54 self._gain_config.read(config_filename)
55 try: gain = self._gain_config.getfloat('usrp_rx_hrpt', 'gain')
58 self._freq_config = ConfigParser.ConfigParser()
59 self._freq_config.read(config_filename)
60 try: freq = self._freq_config.getfloat('usrp_rx_hrpt', 'freq')
63 self._clock_alpha_config = ConfigParser.ConfigParser()
64 self._clock_alpha_config.read(config_filename)
65 try: clock_alpha = self._clock_alpha_config.getfloat('usrp_rx_hrpt', 'clock_alpha')
66 except: clock_alpha = 0.05
67 self.clock_alpha = clock_alpha
69 ##################################################
71 ##################################################
72 self.agc = gr.agc_cc(1e-6, 1.0, 1.0, 1.0)
73 self.decoder = noaa.hrpt_decoder()
74 self.deframer = noaa.hrpt_deframer()
75 self.frame_sink = gr.file_sink(gr.sizeof_short*1, output_filename)
76 self.gr_binary_slicer_fb_0 = gr.binary_slicer_fb()
77 self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_ff(sps/2.0, clock_alpha**2/4.0, 0.5, clock_alpha, max_clock_offset)
78 self.gr_moving_average_xx_0 = gr.moving_average_ff(hs, 1.0/hs, 4000)
79 self.noaa_hrpt_bit_sync_0 = noaa.hrpt_bit_sync()
80 self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset)
81 self.usrp_source = grc_usrp.simple_source_c(which=0, side=side, rx_ant="RXA")
82 self.usrp_source.set_decim_rate(decim)
83 self.usrp_source.set_frequency(freq, verbose=True)
84 self.usrp_source.set_gain(gain)
86 ##################################################
88 ##################################################
89 self.connect((self.usrp_source, 0), (self.agc, 0))
90 self.connect((self.agc, 0), (self.pll, 0))
91 self.connect((self.pll, 0), (self.gr_moving_average_xx_0, 0))
92 self.connect((self.gr_moving_average_xx_0, 0), (self.gr_clock_recovery_mm_xx_0, 0))
93 self.connect((self.noaa_hrpt_bit_sync_0, 0), (self.deframer, 0))
94 self.connect((self.gr_binary_slicer_fb_0, 0), (self.noaa_hrpt_bit_sync_0, 0))
95 self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_binary_slicer_fb_0, 0))
96 self.connect((self.deframer, 0), (self.frame_sink, 0))
97 self.connect((self.deframer, 0), (self.decoder, 0))
99 def set_config_filename(self, config_filename):
100 self.config_filename = config_filename
101 self._clock_alpha_config = ConfigParser.ConfigParser()
102 self._clock_alpha_config.read(self.config_filename)
103 if not self._clock_alpha_config.has_section('usrp_rx_hrpt'):
104 self._clock_alpha_config.add_section('usrp_rx_hrpt')
105 self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha))
106 self._clock_alpha_config.write(open(self.config_filename, 'w'))
107 self._gain_config = ConfigParser.ConfigParser()
108 self._gain_config.read(self.config_filename)
109 if not self._gain_config.has_section('usrp_rx_hrpt'):
110 self._gain_config.add_section('usrp_rx_hrpt')
111 self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain))
112 self._gain_config.write(open(self.config_filename, 'w'))
113 self._freq_config = ConfigParser.ConfigParser()
114 self._freq_config.read(self.config_filename)
115 if not self._freq_config.has_section('usrp_rx_hrpt'):
116 self._freq_config.add_section('usrp_rx_hrpt')
117 self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq))
118 self._freq_config.write(open(self.config_filename, 'w'))
119 self._decim_config = ConfigParser.ConfigParser()
120 self._decim_config.read(self.config_filename)
121 if not self._decim_config.has_section('usrp_rx_hrpt'):
122 self._decim_config.add_section('usrp_rx_hrpt')
123 self._decim_config.set('usrp_rx_hrpt', 'decim', str(self.decim))
124 self._decim_config.write(open(self.config_filename, 'w'))
125 self._output_filename_config = ConfigParser.ConfigParser()
126 self._output_filename_config.read(self.config_filename)
127 if not self._output_filename_config.has_section('usrp_rx_hrpt'):
128 self._output_filename_config.add_section('usrp_rx_hrpt')
129 self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename))
130 self._output_filename_config.write(open(self.config_filename, 'w'))
131 self._pll_alpha_config = ConfigParser.ConfigParser()
132 self._pll_alpha_config.read(self.config_filename)
133 if not self._pll_alpha_config.has_section('usrp_rx_hrpt'):
134 self._pll_alpha_config.add_section('usrp_rx_hrpt')
135 self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha))
136 self._pll_alpha_config.write(open(self.config_filename, 'w'))
137 self._side_config = ConfigParser.ConfigParser()
138 self._side_config.read(self.config_filename)
139 if not self._side_config.has_section('usrp_rx_hrpt'):
140 self._side_config.add_section('usrp_rx_hrpt')
141 self._side_config.set('usrp_rx_hrpt', 'side', str(self.side))
142 self._side_config.write(open(self.config_filename, 'w'))
144 def set_decim(self, decim):
146 self.set_sample_rate(64e6/self.decim)
147 self._decim_config = ConfigParser.ConfigParser()
148 self._decim_config.read(self.config_filename)
149 if not self._decim_config.has_section('usrp_rx_hrpt'):
150 self._decim_config.add_section('usrp_rx_hrpt')
151 self._decim_config.set('usrp_rx_hrpt', 'decim', str(self.decim))
152 self._decim_config.write(open(self.config_filename, 'w'))
153 self.usrp_source.set_decim_rate(self.decim)
155 def set_sym_rate(self, sym_rate):
156 self.sym_rate = sym_rate
157 self.set_sps(self.sample_rate/self.sym_rate)
159 def set_sample_rate(self, sample_rate):
160 self.sample_rate = sample_rate
161 self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate)
162 self.set_sps(self.sample_rate/self.sym_rate)
164 def set_sps(self, sps):
166 self.set_hs(int(self.sps/2.0))
167 self.gr_clock_recovery_mm_xx_0.set_omega(self.sps/2.0)
169 def set_side(self, side):
171 self._side_config = ConfigParser.ConfigParser()
172 self._side_config.read(self.config_filename)
173 if not self._side_config.has_section('usrp_rx_hrpt'):
174 self._side_config.add_section('usrp_rx_hrpt')
175 self._side_config.set('usrp_rx_hrpt', 'side', str(self.side))
176 self._side_config.write(open(self.config_filename, 'w'))
178 def set_pll_alpha(self, pll_alpha):
179 self.pll_alpha = pll_alpha
180 self._pll_alpha_config = ConfigParser.ConfigParser()
181 self._pll_alpha_config.read(self.config_filename)
182 if not self._pll_alpha_config.has_section('usrp_rx_hrpt'):
183 self._pll_alpha_config.add_section('usrp_rx_hrpt')
184 self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha))
185 self._pll_alpha_config.write(open(self.config_filename, 'w'))
186 self.pll.set_alpha(self.pll_alpha)
187 self.pll.set_beta(self.pll_alpha**2/4.0)
189 def set_output_filename(self, output_filename):
190 self.output_filename = output_filename
191 self._output_filename_config = ConfigParser.ConfigParser()
192 self._output_filename_config.read(self.config_filename)
193 if not self._output_filename_config.has_section('usrp_rx_hrpt'):
194 self._output_filename_config.add_section('usrp_rx_hrpt')
195 self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename))
196 self._output_filename_config.write(open(self.config_filename, 'w'))
198 def set_max_clock_offset(self, max_clock_offset):
199 self.max_clock_offset = max_clock_offset
201 def set_max_carrier_offset(self, max_carrier_offset):
202 self.max_carrier_offset = max_carrier_offset
203 self.pll.set_max_offset(self.max_carrier_offset)
205 def set_hs(self, hs):
207 self.gr_moving_average_xx_0.set_length_and_scale(self.hs, 1.0/self.hs)
209 def set_gain(self, gain):
211 self._gain_config = ConfigParser.ConfigParser()
212 self._gain_config.read(self.config_filename)
213 if not self._gain_config.has_section('usrp_rx_hrpt'):
214 self._gain_config.add_section('usrp_rx_hrpt')
215 self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain))
216 self._gain_config.write(open(self.config_filename, 'w'))
217 self.usrp_source.set_gain(self.gain)
219 def set_freq(self, freq):
221 self._freq_config = ConfigParser.ConfigParser()
222 self._freq_config.read(self.config_filename)
223 if not self._freq_config.has_section('usrp_rx_hrpt'):
224 self._freq_config.add_section('usrp_rx_hrpt')
225 self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq))
226 self._freq_config.write(open(self.config_filename, 'w'))
227 self.usrp_source.set_frequency(self.freq)
229 def set_clock_alpha(self, clock_alpha):
230 self.clock_alpha = clock_alpha
231 self._clock_alpha_config = ConfigParser.ConfigParser()
232 self._clock_alpha_config.read(self.config_filename)
233 if not self._clock_alpha_config.has_section('usrp_rx_hrpt'):
234 self._clock_alpha_config.add_section('usrp_rx_hrpt')
235 self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha))
236 self._clock_alpha_config.write(open(self.config_filename, 'w'))
237 self.gr_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0)
238 self.gr_clock_recovery_mm_xx_0.set_gain_mu(self.clock_alpha)
240 if __name__ == '__main__':
241 parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
242 (options, args) = parser.parse_args()
243 if gr.enable_realtime_scheduling() != gr.RT_OK:
244 print "Error: failed to enable realtime scheduling."
245 tb = usrp_rx_hrpt_nogui()
247 raw_input('Press Enter to quit: ')