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op25-legacy
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git-svn-id: http://op25.osmocom.org/svn/trunk@294 65a5c917-d112-43f1-993d-58c26a4786be
master
max 2011-07-18 22:17:04 +00:00
parent 62c821bcb9
commit 59c5d9a37d
1 changed files with 7 additions and 7 deletions
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14
repeater/src/python/scope.py
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@ -68,8 +68,8 @@ class p25_rx_block (stdgui2.std_top_block):
parser.add_option("-I", "--audio-input", type="string", default="", help="pcm input device name. E.g., hw:0,0 or /dev/dsp")
parser.add_option("-i", "--input", default=None, help="input file name")
parser.add_option("-b", "--excess-bw", type="eng_float", default=0.2, help="for RRC filter", metavar="Hz")
parser.add_option("-c", "--calibration", type="eng_float", default=0.0, help="offset frequency", metavar="Hz")
parser.add_option("-C", "--costas-alpha", type="eng_float", default=0.125, help="offset frequency", metavar="Hz")
parser.add_option("-c", "--calibration", type="eng_float", default=0.0, help="USRP offset or audio IF frequency", metavar="Hz")
parser.add_option("-C", "--costas-alpha", type="eng_float", default=0.125, help="value of alpha for Costas loop", metavar="Hz")
parser.add_option("-f", "--frequency", type="eng_float", default=0.0, help="USRP center frequency", metavar="Hz")
parser.add_option("-d", "--decim", type="int", default=200, help="source decimation factor")
parser.add_option("-v", "--verbosity", type="int", default=10, help="message debug level")
@ -77,7 +77,7 @@ class p25_rx_block (stdgui2.std_top_block):
parser.add_option("-w", "--wireshark", action="store_true", default=False, help="output data to Wireshark")
parser.add_option("-W", "--wireshark-host", type="string", default="127.0.0.1", help="Wireshark host")
parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0), help="select USRP Rx side A or B (default=A)")
parser.add_option("-g", "--gain", type="eng_float", default=None, help="set USRP gain in dB (default is midpoint) (or audio gain)")
parser.add_option("-g", "--gain", type="eng_float", default=None, help="set USRP gain in dB (default is midpoint) or set audio gain")
parser.add_option("-G", "--gain-mu", type="eng_float", default=0.025, help="gardner gain")
(options, args) = parser.parse_args()
if len(args) != 0:
@ -167,7 +167,7 @@ class p25_rx_block (stdgui2.std_top_block):
sps = int(self.basic_rate // self.symbol_rate)
symbol_decim = 1
ntaps = 11 * 10
ntaps = 11 * sps
# rrc_coeffs = gr.firdes.root_raised_cosine(1.0, self.basic_rate, self.basic_rate * 0.1, 0.2, ntaps)
rrc_coeffs = (1.0/sps,)*sps
self.symbol_filter = gr.fir_filter_fff(symbol_decim, rrc_coeffs)
@ -248,7 +248,7 @@ class p25_rx_block (stdgui2.std_top_block):
rrc_taps = gr.firdes.root_raised_cosine(
1.0, # gain (sps since we're interpolating by
10, # sampling rate
sps, # sampling rate
1.0, # symbol rate
self.options.excess_bw, # excess bandwidth (roll-off factor)
ntaps)
@ -267,7 +267,7 @@ class p25_rx_block (stdgui2.std_top_block):
theta = pi
gain_mu= self.options.gain_mu
omega = 10
omega = float(sps)
gain_omega = 0.1 * gain_mu * gain_mu
alpha = self.options.costas_alpha
@ -275,7 +275,7 @@ class p25_rx_block (stdgui2.std_top_block):
fmin = -0.025
fmax = 0.025
self.clock = repeater.gardner_costas_cc(10.0, gain_mu, gain_omega, alpha, beta, fmax, fmin)
self.clock = repeater.gardner_costas_cc(omega, gain_mu, gain_omega, alpha, beta, fmax, fmin)
self.agc = gr.feedforward_agc_cc(16, 1.0)