From 42c1bfdc72b29f18c5a750a07959d4cc760411b4 Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Tue, 4 Sep 2007 13:21:24 +0000
Subject: Cleanup on gnuradio-examples restructuring.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6287 221aa14e-8319-0410-a670-987f0aec2ac5
---
.../python/digital/limbo/qpsk_usrp_tester.py | 103 ---------------------
1 file changed, 103 deletions(-)
delete mode 100644 gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py
(limited to 'gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py')
diff --git a/gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py b/gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py
deleted file mode 100644
index bf7698a2b2..0000000000
--- a/gnuradio-examples/python/digital/limbo/qpsk_usrp_tester.py
+++ /dev/null
@@ -1,103 +0,0 @@
-#!/usr/bin/env python
-
-import random
-from gnuradio import gr, gru, usrp
-
-default_access_code = '\xAC\xDD\xA4\xE2\xF2\x8C\x20\xFC'
-
-def string_to_1_0_list(s):
- r = []
- for ch in s:
- x = ord(ch)
- for i in range(8):
- t = (x >> i) & 0x1
- r.append(t)
-
- return r
-
-def to_1_0_string(L):
- return ''.join(map(lambda x: chr(x + ord('0')), L))
-
-code = string_to_1_0_list(default_access_code)
-
-access_code = to_1_0_string(code)
-
-def main():
-
- fg = gr.flow_graph()
- f_rf = 5e6
- fs = 400e3
- sr = 100e3
- alpha = 0.5
- M = 4
- k = int(gru.log2(M))
-
- # Source
- src = usrp.source_c ()
- adc_rate = src.adc_rate()
- usrp_decim = int(adc_rate / fs)
- src.set_decim_rate(usrp_decim)
-
- subdev_spec = usrp.pick_rx_subdevice(src)
- subdev = usrp.selected_subdev(src, subdev_spec)
- print "Using RX d'board %s" % (subdev.side_and_name(),)
- src.set_mux(usrp.determine_rx_mux_value(src, subdev_spec))
- src.tune(0, subdev, f_rf)
-
- g = subdev.gain_range()
- subdev.set_gain(g[1])
- subdev.set_auto_tr(True)
-
- print "USRP Decimation Rate = %d" % usrp_decim
- print "RF Frequency = %d" % f_rf
-
- agc = gr.multiply_const_cc(0.0025)
-
- # Downconverter
- costas_alpha=0.005
- beta = costas_alpha*costas_alpha*0.25
- sync_loop = gr.costas_loop_cc(costas_alpha, beta, 0.05, -0.05, 0)
-
- # Stage 2
-# fs2 = 200e3
-# D = int(fs / fs2)
-# decimator = gr.keep_one_in_n(gr.sizeof_gr_complex, D)
-# print "D = %d\nAfter decimator fs = %f" % (D, fs2)
-
- # Demodulator
- taps = gr.firdes.root_raised_cosine(1, fs, sr, alpha, 45)
- rrc = gr.fir_filter_ccf(1, taps)
-
- # Sampler
- mu = 0.01
- omega = 4.3
- gain_mu = 0.05
- gain_omega = 0.25*gain_mu*gain_mu
- omega_rel_limit = 0.5
- clock_sync = gr.clock_recovery_mm_cc(omega, gain_omega, mu,
- gain_mu, omega_rel_limit)
- clock_sync.set_verbose(False)
-
- diff_phasor = gr.diff_phasor_cc()
-
- threshold = 12
- constellation = (1+0j, 0+1j, -1+0j, 0-1j)
- slicer = gr.constellation_decoder_cb((constellation), (0,1,2,3))
- unpack = gr.unpack_k_bits_bb(k)
- access = gr.correlate_access_code_bb(access_code,threshold)
-
- test = gr.file_sink(gr.sizeof_gr_complex, 'test.dat')
- sink = gr.file_sink(gr.sizeof_char, 'output.dat')
-
- fg.connect(src, agc, sync_loop, rrc, clock_sync)
- fg.connect(clock_sync, diff_phasor, slicer, unpack, access, sink)
-
- fg.connect(slicer, gr.file_sink(gr.sizeof_char, 'chunks.dat'))
- fg.connect(unpack, gr.file_sink(gr.sizeof_char, 'unpack.dat'))
- fg.connect(clock_sync, gr.file_sink(gr.sizeof_gr_complex, 'phasor.dat'))
-
- fg.start()
- fg.wait()
-
-if __name__ == "__main__":
- main()
--
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