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majekw / sigrok-ccd-pd

CCD (Chrysler's Collision Detection) Data Bus protocol decoder for Sigrok
GNU General Public License v2.0
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Closed Moddler closed 5 years ago

Moddler commented 5 years ago

CCD dump from a 1994 Chrysler Voyager european version made with a Hantek 6022BL. There are separate dumps for the mechanical instrument cluster and the digital instrument cluster. The body controller from the digital instrument cluster stores the mileage, so there is a possibility the mileage is transmitted via the CCD bus. This should not be the case with the mechanical instrument cluster.

The dumps are created with PulseView with with 2M samples at a rate of 1mhz. Other values would not work reliably.

majekw commented 5 years ago

Thank you for your dumps. Unfortunately there are analog dumps and protocol decoders don't work in Sigrok with analog samples :-( Before I merge this I need to find a way to convert them into digital one. As a backup plan I'll try to write how to make digital dump using logic analyzer and cheapest Arduino board.

Moddler commented 5 years ago

PulseView can convert the Analog input into a digital signal. Right click onto the channel and then conversion via threshold. It could need some tweaking for the voltage, to get the threshold set correctly. I tried it yesterday an it worked, the CCD decoder worked!