sigrok decoder can rtr fix

can_pd.patch

iff --git a/decoders/can/pd.py b/decoders/can/pd.py
index 3dbadc0..e47018f 100644
--- a/decoders/can/pd.py
+++ b/decoders/can/pd.py
@@ -263,6 +263,7 @@ def decode_standard_frame(self, can_rx, bitnum):
                 # Bit 12: Remote transmission request (RTR) bit
                 # Data frame: dominant, remote frame: recessive
                 # Remote frames do not contain a data field.
+                self.rtr = self.bits[12]
                 rtr = 'remote' if self.bits[12] == 1 else 'data'
                 self.put12([8, ['Remote transmission request: %s frame' % rtr,
                                 'RTR: %s frame' % rtr, 'RTR']])
@@ -286,7 +287,11 @@ def decode_standard_frame(self, can_rx, bitnum):
             self.dlc = int(''.join(str(d) for d in self.bits[self.dlc_start:self.dlc_start + 4]), 2)
             self.putb([10, ['Data length code: %d' % self.dlc,
                             'DLC: %d' % self.dlc, 'DLC']])
-            self.last_databit = self.dlc_start + 3 + (dlc2len(self.dlc) * 8)
+            if(self.rtr == 1):
+                self.last_databit = self.dlc_start + 3
+            else:
+                self.last_databit = self.dlc_start + 3 + (dlc2len(self.dlc) * 8)
+
             if self.dlc > 8 and not self.fd:
                 self.putb([16, ['Data length code (DLC) > 8 is not allowed']])
 
@@ -386,7 +391,10 @@ def decode_extended_frame(self, can_rx, bitnum):
             self.dlc = int(''.join(str(d) for d in self.bits[self.dlc_start:self.dlc_start + 4]), 2)
             self.putb([10, ['Data length code: %d' % self.dlc,
                             'DLC: %d' % self.dlc, 'DLC']])
-            self.last_databit = self.dlc_start + 3 + (dlc2len(self.dlc) * 8)
+            if(self.rtr == 1):
+                self.last_databit = self.dlc_start + 3
+            else:
+                self.last_databit = self.dlc_start + 3 + (dlc2len(self.dlc) * 8)
 
         # Remember all databyte bits, except the very last one.
         elif bitnum in range(self.dlc_start + 4, self.last_databit):