From 0d0daed86e990bfe582358c0aed7d39e429a710c Mon Sep 17 00:00:00 2001
From: jeankalud <jeankalud@users.noreply.github.com>
Date: Wed, 1 Mar 2017 11:02:46 -0500
Subject: [PATCH 1/2] Add files via upload

Fixed little endian handling
Fixed offset / scaling handling
---
 common/dbc.py | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/common/dbc.py b/common/dbc.py
index d333f0a917aa0f..e7609f513b8ee4 100755
--- a/common/dbc.py
+++ b/common/dbc.py
@@ -134,6 +134,10 @@ def decode(self, x, arr=None, debug=False):
 
         Returns (None, None) if the message could not be decoded.
     """
+    
+    def swap_order(d, wsz=4, gsz=2 ):
+      return "".join(["".join([m[i:i+gsz] for i in range(wsz-gsz,-gsz,-gsz)]) for m in [d[i:i+wsz] for i in range(0,len(d),wsz)]])
+    
     if arr is None:
       out = {}
     else:
@@ -151,7 +155,6 @@ def decode(self, x, arr=None, debug=False):
       print name
 
     blen = 8*len(x[2])
-    x2_int = int(hexlify(x[2]), 16)
 
     for s in msg[1]:
       if arr is not None and s[0] not in arr:
@@ -160,11 +163,17 @@ def decode(self, x, arr=None, debug=False):
       # big or little endian?
       #   see http://vi-firmware.openxcplatform.com/en/master/config/bit-numbering.html
       if s[3] is False:
+        endianness = "big"
         ss = self.bits.index(s[1])
+        x2_int = int(hexlify(x[2]), 16)
+        data_bit_pos = (blen - (ss + s[2]))
       else:
+        endianness = "little"
+        x2_int = int(swap_order(hexlify(x[2]), 16, 2), 16)
         ss = s[1]
+        data_bit_pos = ss
 
-      data_bit_pos = (blen - (ss + s[2]))
+      
       if data_bit_pos < 0:
         continue
       ival = (x2_int >> data_bit_pos) & ((1 << (s[2])) - 1)
@@ -173,12 +182,13 @@ def decode(self, x, arr=None, debug=False):
         ival -= (1<<s[2])
 
       # control the offset
-      ival = (ival + s[6])*s[5]
-      if debug:
-        print "%40s  %2d %2d  %7.2f %s" % (s[0], s[1], s[2], ival, s[-1])
+      ival = (ival * s[5]) + s[6]
+      #if debug:
+      #  print "%40s  %2d %2d  %7.2f %s" % (s[0], s[1], s[2], ival, s[-1])
 
       if arr is None:
         out[s[0]] = ival
       else:
         out[arr.index(s[0])] = ival
     return name, out
+    

From f5a1e86d8520c55ab60d735c146c915b01b85ee3 Mon Sep 17 00:00:00 2001
From: jeankalud <jeankalud@users.noreply.github.com>
Date: Wed, 1 Mar 2017 18:13:37 -0500
Subject: [PATCH 2/2] Add files via upload

Removed unused debug strings
---
 common/dbc.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/common/dbc.py b/common/dbc.py
index e7609f513b8ee4..054da288ef98b5 100755
--- a/common/dbc.py
+++ b/common/dbc.py
@@ -163,12 +163,10 @@ def swap_order(d, wsz=4, gsz=2 ):
       # big or little endian?
       #   see http://vi-firmware.openxcplatform.com/en/master/config/bit-numbering.html
       if s[3] is False:
-        endianness = "big"
         ss = self.bits.index(s[1])
         x2_int = int(hexlify(x[2]), 16)
         data_bit_pos = (blen - (ss + s[2]))
       else:
-        endianness = "little"
         x2_int = int(swap_order(hexlify(x[2]), 16, 2), 16)
         ss = s[1]
         data_bit_pos = ss