2 ##################################################
3 # Gnuradio Python Flow Graph
4 # Title: Usrp Rx Hrpt Nogui
5 # Generated: Mon Nov 9 08:03:25 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 = 0.01
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.hrpt'
49 self.output_filename = output_filename
50 self.max_clock_offset = max_clock_offset = 100e-6
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 = 0.01
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(True,True)
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.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset)
80 self.usrp_source = grc_usrp.simple_source_c(which=0, side=side, rx_ant="RXA")
81 self.usrp_source.set_decim_rate(decim)
82 self.usrp_source.set_frequency(freq, verbose=True)
83 self.usrp_source.set_gain(gain)
85 ##################################################
87 ##################################################
88 self.connect((self.usrp_source, 0), (self.agc, 0))
89 self.connect((self.agc, 0), (self.pll, 0))
90 self.connect((self.pll, 0), (self.gr_moving_average_xx_0, 0))
91 self.connect((self.gr_moving_average_xx_0, 0), (self.gr_clock_recovery_mm_xx_0, 0))
92 self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_binary_slicer_fb_0, 0))
93 self.connect((self.deframer, 0), (self.frame_sink, 0))
94 self.connect((self.deframer, 0), (self.decoder, 0))
95 self.connect((self.gr_binary_slicer_fb_0, 0), (self.deframer, 0))
97 def set_config_filename(self, config_filename):
98 self.config_filename = config_filename
99 self._gain_config = ConfigParser.ConfigParser()
100 self._gain_config.read(self.config_filename)
101 if not self._gain_config.has_section('usrp_rx_hrpt'):
102 self._gain_config.add_section('usrp_rx_hrpt')
103 self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain))
104 self._gain_config.write(open(self.config_filename, 'w'))
105 self._freq_config = ConfigParser.ConfigParser()
106 self._freq_config.read(self.config_filename)
107 if not self._freq_config.has_section('usrp_rx_hrpt'):
108 self._freq_config.add_section('usrp_rx_hrpt')
109 self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq))
110 self._freq_config.write(open(self.config_filename, 'w'))
111 self._side_config = ConfigParser.ConfigParser()
112 self._side_config.read(self.config_filename)
113 if not self._side_config.has_section('usrp_rx_hrpt'):
114 self._side_config.add_section('usrp_rx_hrpt')
115 self._side_config.set('usrp_rx_hrpt', 'side', str(self.side))
116 self._side_config.write(open(self.config_filename, 'w'))
117 self._decim_config = ConfigParser.ConfigParser()
118 self._decim_config.read(self.config_filename)
119 if not self._decim_config.has_section('usrp_rx_hrpt'):
120 self._decim_config.add_section('usrp_rx_hrpt')
121 self._decim_config.set('usrp_rx_hrpt', 'decim', str(self.decim))
122 self._decim_config.write(open(self.config_filename, 'w'))
123 self._pll_alpha_config = ConfigParser.ConfigParser()
124 self._pll_alpha_config.read(self.config_filename)
125 if not self._pll_alpha_config.has_section('usrp_rx_hrpt'):
126 self._pll_alpha_config.add_section('usrp_rx_hrpt')
127 self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha))
128 self._pll_alpha_config.write(open(self.config_filename, 'w'))
129 self._clock_alpha_config = ConfigParser.ConfigParser()
130 self._clock_alpha_config.read(self.config_filename)
131 if not self._clock_alpha_config.has_section('usrp_rx_hrpt'):
132 self._clock_alpha_config.add_section('usrp_rx_hrpt')
133 self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha))
134 self._clock_alpha_config.write(open(self.config_filename, 'w'))
135 self._output_filename_config = ConfigParser.ConfigParser()
136 self._output_filename_config.read(self.config_filename)
137 if not self._output_filename_config.has_section('usrp_rx_hrpt'):
138 self._output_filename_config.add_section('usrp_rx_hrpt')
139 self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename))
140 self._output_filename_config.write(open(self.config_filename, 'w'))
142 def set_decim(self, decim):
144 self.set_sample_rate(64e6/self.decim)
145 self.usrp_source.set_decim_rate(self.decim)
146 self._decim_config = ConfigParser.ConfigParser()
147 self._decim_config.read(self.config_filename)
148 if not self._decim_config.has_section('usrp_rx_hrpt'):
149 self._decim_config.add_section('usrp_rx_hrpt')
150 self._decim_config.set('usrp_rx_hrpt', 'decim', str(self.decim))
151 self._decim_config.write(open(self.config_filename, 'w'))
153 def set_sym_rate(self, sym_rate):
154 self.sym_rate = sym_rate
155 self.set_sps(self.sample_rate/self.sym_rate)
157 def set_sample_rate(self, sample_rate):
158 self.sample_rate = sample_rate
159 self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate)
160 self.set_sps(self.sample_rate/self.sym_rate)
162 def set_sps(self, sps):
164 self.set_hs(int(self.sps/2.0))
165 self.gr_clock_recovery_mm_xx_0.set_omega(self.sps/2.0)
167 def set_side(self, side):
169 self._side_config = ConfigParser.ConfigParser()
170 self._side_config.read(self.config_filename)
171 if not self._side_config.has_section('usrp_rx_hrpt'):
172 self._side_config.add_section('usrp_rx_hrpt')
173 self._side_config.set('usrp_rx_hrpt', 'side', str(self.side))
174 self._side_config.write(open(self.config_filename, 'w'))
176 def set_pll_alpha(self, pll_alpha):
177 self.pll_alpha = pll_alpha
178 self.pll.set_alpha(self.pll_alpha)
179 self.pll.set_beta(self.pll_alpha**2/4.0)
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'))
187 def set_output_filename(self, output_filename):
188 self.output_filename = output_filename
189 self._output_filename_config = ConfigParser.ConfigParser()
190 self._output_filename_config.read(self.config_filename)
191 if not self._output_filename_config.has_section('usrp_rx_hrpt'):
192 self._output_filename_config.add_section('usrp_rx_hrpt')
193 self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename))
194 self._output_filename_config.write(open(self.config_filename, 'w'))
196 def set_max_clock_offset(self, max_clock_offset):
197 self.max_clock_offset = max_clock_offset
199 def set_max_carrier_offset(self, max_carrier_offset):
200 self.max_carrier_offset = max_carrier_offset
201 self.pll.set_max_offset(self.max_carrier_offset)
203 def set_hs(self, hs):
205 self.gr_moving_average_xx_0.set_length_and_scale(self.hs, 1.0/self.hs)
207 def set_gain(self, gain):
209 self._gain_config = ConfigParser.ConfigParser()
210 self._gain_config.read(self.config_filename)
211 if not self._gain_config.has_section('usrp_rx_hrpt'):
212 self._gain_config.add_section('usrp_rx_hrpt')
213 self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain))
214 self._gain_config.write(open(self.config_filename, 'w'))
215 self.usrp_source.set_gain(self.gain)
217 def set_freq(self, freq):
219 self._freq_config = ConfigParser.ConfigParser()
220 self._freq_config.read(self.config_filename)
221 if not self._freq_config.has_section('usrp_rx_hrpt'):
222 self._freq_config.add_section('usrp_rx_hrpt')
223 self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq))
224 self._freq_config.write(open(self.config_filename, 'w'))
225 self.usrp_source.set_frequency(self.freq)
227 def set_clock_alpha(self, clock_alpha):
228 self.clock_alpha = clock_alpha
229 self.gr_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0)
230 self.gr_clock_recovery_mm_xx_0.set_gain_mu(self.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'))
238 if __name__ == '__main__':
239 parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
240 (options, args) = parser.parse_args()
241 if gr.enable_realtime_scheduling() != gr.RT_OK:
242 print "Error: failed to enable realtime scheduling."
243 tb = usrp_rx_hrpt_nogui()
245 raw_input('Press Enter to quit: ')