adding QA for pll_freqdet block

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@4087 221aa14e-8319-0410-a670-987f0aec2ac5

2 files changed, 162 insertions, 0 deletions

diff --git a/gnuradio-core/src/python/gnuradio/gr/Makefile.am b/gnuradio-core/src/python/gnuradio/gr/Makefile.am
index d85de5b87..5661cac5c 100644
--- a/gnuradio-core/src/python/gnuradio/gr/Makefile.am
+++ b/gnuradio-core/src/python/gnuradio/gr/Makefile.am
@@ -77,6 +77,7 @@ noinst_PYTHON = 			\
 	qa_packed_to_unpacked.py	\
 	qa_pipe_fittings.py		\
 	qa_pll_carriertracking.py	\
+	qa_pll_freqdet.py		\
 	qa_pll_refout.py		\
 	qa_rational_resampler.py	\
 	qa_sig_source.py		\
diff --git a/gnuradio-core/src/python/gnuradio/gr/qa_pll_freqdet.py b/gnuradio-core/src/python/gnuradio/gr/qa_pll_freqdet.py
new file mode 100755
index 000000000..137bc8538
--- /dev/null
+++ b/gnuradio-core/src/python/gnuradio/gr/qa_pll_freqdet.py
@@ -0,0 +1,161 @@
+#!/usr/bin/env python
+#
+# Copyright 2004 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+from gnuradio import gr, gr_unittest
+import math
+
+class test_sig_source (gr_unittest.TestCase):
+
+    def setUp (self):
+        self.fg = gr.flow_graph()
+
+    def tearDown (self):
+        self.fg = None
+
+    def test_pll_refout (self):
+        expected_result = (1.1489677586e-07,
+                           0.972821060568,
+                           2.74556447638,
+                           5.14063078448,
+                           8.00965819311,
+                           11.2291393027,
+                           14.6967068752,
+                           18.3279143967,
+                           22.0534772463,
+                           25.8170093072,
+                           29.5729107661,
+                           33.284774699,
+                           36.923857393,
+                           40.4367950308,
+                           43.8452195091,
+                           47.1363835133,
+                           50.3011949468,
+                           53.3336447847,
+                           56.2301489564,
+                           58.9891659262,
+                           61.6107668417,
+                           64.0962975824,
+                           66.4481356707,
+                           68.6694531128,
+                           70.7640326003,
+                           72.7048735417,
+                           74.5033180826,
+                           76.2012544926,
+                           77.8019199967,
+                           79.3088126954,
+                           80.7255907715,
+                           82.0560369166,
+                           83.3039516093,
+                           84.47312347,
+                           85.5673411194,
+                           86.5902864563,
+                           87.5456117346,
+                           88.4368565575,
+                           89.2363918613,
+                           89.9860999864,
+                           90.688880206,
+                           91.3474598523,
+                           91.9644654653,
+                           92.5423042123,
+                           93.0832706099,
+                           93.5894872344,
+                           94.0629225081,
+                           94.5054203452,
+                           94.9186882929,
+                           95.3043331057,
+                           95.6326268597,
+                           95.9117515522,
+                           96.1801447842,
+                           96.437391527,
+                           96.6831953314,
+                           96.9173605408,
+                           97.1397982206,
+                           97.3504727968,
+                           97.5493842694,
+                           97.7366275022,
+                           97.9123092169,
+                           98.0766013539,
+                           98.2297054988,
+                           98.3408087235,
+                           98.448722155,
+                           98.5534457933,
+                           98.6549322065,
+                           98.7531932527,
+                           98.8481459259,
+                           98.9397487233,
+                           99.0279067813,
+                           99.1125074491,
+                           99.193438076,
+                           99.2705800823,
+                           99.3438030304,
+                           99.3817663128,
+                           99.3911400359,
+                           99.4089388448,
+                           99.4334136894,
+                           99.4630408207,
+                           99.4964684305,
+                           99.5325166512,
+                           99.5701538394,
+                           99.6084432158,
+                           99.6466021546,
+                           99.6839073198,
+                           99.7197895289,
+                           99.7537270313,
+                           99.7542606398,
+                           99.7595848672,
+                           99.7691186729,
+                           99.7822928746,
+                           99.7986331535,
+                           99.8175940432,
+                           99.838713083,
+                           99.8614922382,
+                           99.8854571901,
+                           99.9101454781,
+                           99.9351302152,
+                           99.9599845147)
+
+        sampling_freq = 10e3
+        freq = sampling_freq / 100
+
+        alpha = 0.2
+        beta = alpha * alpha / 4.0
+        maxf = 1
+        minf = -1
+
+        src = gr.sig_source_c (sampling_freq, gr.GR_COS_WAVE, freq, 1.0)
+        pll = gr.pll_freqdet_cf(alpha, beta, maxf, minf)
+        head = gr.head (gr.sizeof_float, int (freq))
+        dst = gr.vector_sink_f ()
+
+        self.fg.connect (src, pll, head)
+        self.fg.connect (head, dst)
+
+        self.fg.run ()
+        dst_data = dst.data ()
+
+        # convert it from normalized frequency to absolute frequency (Hz)
+        dst_data = [i*(sampling_freq/(2*math.pi)) for i in dst_data]
+
+        self.assertFloatTuplesAlmostEqual (expected_result, dst_data, 5)
+
+if __name__ == '__main__':
+    gr_unittest.main ()