Added optional support for Sparkfun SiGe GN3S USB GPS RF sampler:

- Added a pre-compiled custom GN3S firmware.
- Added a fully-compliant GNU Radio source block for GN3S USB dongle. It can be used also from GNU Radio companion and from Python applications.
- Added a new GN3S_Signal_Source block. It is possible to disable the GN3S signal source compilation. See README.

git-svn-id: https://svn.code.sf.net/p/gnss-sdr/code/trunk@217 64b25241-fba3-4117-9849-534c7e92360d

drivers/gr-gn3s/python/qa_gn3s.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python
+#
+# Copyright 2004,2007 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 3, 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 gn3s_swig
+
+class qa_gn3s (gr_unittest.TestCase):
+
+    def setUp (self):
+        self.tb = gr.top_block ()
+
+    def tearDown (self):
+        self.tb = None
+
+    def test_001_gn3s_source_cc (self):
+        #src_data = (-3, 4, -5.5, 2, 3)
+        expected_result = (9, 16, 30.25, 4, 9)
+        #src = gr.vector_source_f (src_data)
+        gn3s_src = gn3s_swig.source_cc ()
+        dst = gr.vector_sink_f ()
+        #self.tb.connect (src, sqr)
+        self.tb.connect (sqr, dst)
+        self.tb.run ()
+        result_data = dst.data ()
+        self.assertFloatTuplesAlmostEqual (expected_result, result_data, 6)
+        
+if __name__ == '__main__':
+    gr_unittest.main ()