Merge branch 'upstream' into dfsg-orig

[debian/gnuradio] / usrp / host / lib / check_data.py

diff --git a/usrp/host/lib/check_data.py b/usrp/host/lib/check_data.py
new file mode 100755 (executable)
index 0000000..100f0f6
--- /dev/null
+++ b/usrp/host/lib/check_data.py
@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+#
+# Copyright 2003 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.
+
+import sys
+import struct
+
+fin = sys.stdin
+
+count = 0
+expected = 0
+last_correction = 0
+
+while 1:
+    s = fin.read(2)
+    if not s or len(s) != 2:
+        break
+
+    v, = struct.unpack ('H', s)
+    iv = int(v) & 0xffff
+    # print "%8d  %6d  0x%04x" % (count, iv, iv)
+    if count & 0x1:                     # only counting on the Q channel
+        if (expected & 0xffff) != iv:
+            print "%8d  (%6d) %6d  0x%04x" % (count, count - last_correction, iv, iv)
+            expected = iv               # reset expected sequence
+            last_correction = count
+        expected = (expected + 1) & 0xffff 
+        
+    count += 1
+
+    
+
+