Missing field "type" in MBusFrame

[eht16]

I think there is a typo in https://github.com/rscada/python-mbus/blob/master/mbus/MBusFrame.py#L21
the field stop is a duplicate and the second instance probably should be type, according to https://github.com/rscada/libmbus/blob/master/mbus/mbus-protocol.h#L91.

I tried redefining the field as:

diff --git a/mbus/MBusFrame.py b/mbus/MBusFrame.py
index 36358e8..1b9c677 100644
--- a/mbus/MBusFrame.py
+++ b/mbus/MBusFrame.py
@@ -1,4 +1,4 @@
-from ctypes import Structure, c_uint8, c_long, c_size_t, POINTER
+from ctypes import Structure, c_int, c_uint8, c_long, c_size_t, POINTER
 
 c_time_t = c_long
 
@@ -18,7 +18,7 @@ MBusFrame._fields_ = [
         ("stop",     c_uint8),
         ("data",     c_uint8 * 252),
         ("data_size", c_size_t),
-        ("stop",      c_uint8),
+        ("type",      c_int),
         ("timestamp", c_time_t),
         ("next",      POINTER(MBusFrame))
 ]

However, even with this change, I wasn't able to read the type of the MBusFrame (also tried c_uint8 for the type). I'm not that familiar with ctypes, so maybe there is another place where the C struct is mapped to the Python object MBusFrame?

For testing I called the function frame_type from the C library directly and it returned 4 while queryting the type attribute in Python always returned 0.

[Cougar]

I just submitted pull request #23 for this fix. Both MBusFrame.type and MBusLib.frame_type() give me the same result.