OBD UART CAN Sniffing challenges

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speedneed
Posts: 2
Joined: Wed Nov 27, 2019 8:00 pm

OBD UART CAN Sniffing challenges

Post by speedneed »

I'm currently working on a project based on the Nano kit. My code is almost ready and shows different information on the oled. Currently I'm using a switch button to switch between the different screens. https://imgur.com/bcjKzpC

The next step is to switch the screen based on built-in button of the car (for example cruise control lower speed). I need to sniff the CAN message for the button press to be able to program an action. So the logic will be:
- listen to specific CAN <message>
- Update a counter in the code
- switch to a next page

Now i'm facing difficulties to get the can sniffing feature working. I understood that the OBD UART adapter has a Micro USB socket to connect directly to a laptop. When I connect to my laptop I get an USB malfunction error. Could someone explain the process to get CAN Sniffing to work with the OBD UART adapter? I'm not getting further at the moment. I tried to search on the internet but there is limited information available.

thank you

stanley
Site Admin
Posts: 786
Joined: Sat Mar 01, 2014 3:15 am

Re: OBD UART CAN Sniffing challenges

Post by stanley »

Freematics OBD UART adapter V2 supports CAN sniffing.

speedneed
Posts: 2
Joined: Wed Nov 27, 2019 8:00 pm

Re: OBD UART CAN Sniffing challenges

Post by speedneed »

in that case, I ordered the wrong Adapter..Any option for me to get the adapter only, without paying the 30 dollar shipping costs?

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