freddyokel
Member
- Joined
- Jun 26, 2015
- Messages
- 17
- Points
- 59
I'm trying to reverse engineer the serial protocol that my head unit uses to talk to the cd changer.
There's some info on the Blaupunkt DMS protocol around, but my head unit doesn't appear speak it.
So far, all I've got on the logic analyser is 8 x 1.6ms pulses at 22.6ms intervals on pin 14 of the blue ISO connector when the head unit is turned on.
So, to cut a long story short I'm in the market for a cd changer so I can spy on the communication between the 2 units, but I've no idea which model I need!
My head unit is labelled 'Fiat Nr. 735 391 102' and 'BP Nr. 7 643 331 316' and the car is an '04 nosejob Multipla.
Any advice would be helpful!
There's some info on the Blaupunkt DMS protocol around, but my head unit doesn't appear speak it.
So far, all I've got on the logic analyser is 8 x 1.6ms pulses at 22.6ms intervals on pin 14 of the blue ISO connector when the head unit is turned on.
So, to cut a long story short I'm in the market for a cd changer so I can spy on the communication between the 2 units, but I've no idea which model I need!
My head unit is labelled 'Fiat Nr. 735 391 102' and 'BP Nr. 7 643 331 316' and the car is an '04 nosejob Multipla.
Any advice would be helpful!
