MP3Car.com - View Single Post - Renault "Tuner List" Head Unit/CD changer hacking

pippolippi · 02-13-2006, 06:55 PM

Quote: Originally Posted by Ale

I think that something go wrong with level 0 threshold becouse the recalculated CRC of the frame 3D 01 FE FD isn't correct (3F instead of 0).

Right, but that's just a start sequence (CristianC calls it connection attempt, repeated 3 times) and you can also see that there aren't 254 (FE) bytes in these packets.
Next frame is 3D 01 01 93 AE C5 and that has the correct checksum (plus the confirmation=C5, probably to the connection attempt).

02-13-2006, 06:55 PM	#73
pippolippi Constant Bitrate Join Date: Feb 2006 Posts: 113	Quote: Originally Posted by Ale I think that something go wrong with level 0 threshold becouse the recalculated CRC of the frame 3D 01 FE FD isn't correct (3F instead of 0). Right, but that's just a start sequence (CristianC calls it connection attempt, repeated 3 times) and you can also see that there aren't 254 (FE) bytes in these packets. Next frame is 3D 01 01 93 AE C5 and that has the correct checksum (plus the confirmation=C5, probably to the connection attempt).