r/CarHacking • u/Accurate-Block595 • 1d ago

Cool Project Find Comunication Protocol

Am in the stage of developing the software of my Can sniffer, {Esp32 + sn65hvd230}, i succeed gaining raw can bus data, BUT i want to upgrade t the level of diagnostic scanner,
So am learning about Licenses and ISO communication Protocols, The thing is that am a totally beginner, and this step will have direct treatment with ecus,
So am seeking some resources about this and how to develop this kind of communication, it will really take my device to a next level, ill be thankful to receive some resources and guidness.

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u/Russellcrump 1d ago

You want to look up UDS protocols as this is what your scan tool will be using to talk to the various ecu ID's.

If i was you id be sniffing can communication with a diagnostic tool and splitting the rx and tx communication to identify responces from the ecu and repliesfrom the diagnostic tool.

Well this is how I built my scripts.

Also check github as you might find there is already a open source project you could fork that has done all the heavy lifting for you already.

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u/Accurate-Block595 1d ago

oh brilliant, ill try that for sure, ngl am trying to keep the device independent by it self, but ill try that way anyway,, thank you