stanleyhuangyc / Freematics

Official source code repository for Freematics
https://freematics.com
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ELM327 is working, Freematics one is not in the same vehicle. #24

Open ayokyun opened 7 years ago

ayokyun commented 7 years ago

I have two cars (both use CAN11B/500K, manufactured in 2009 and 2012) and two OBD dongles (clone ELM327 and Freematics ONE).

Car A Both ELM327 and Freematics ONE are working fine.

Car B ELM327 is working fine, Freematics ONE is not working -> no response.

When I enable debug options, STM32 responde from ATZ, ATE0,. but not from 0100,... I have specified OBD protocol to CAN11/500K instead of AUTO but nothing changed. It looks similar to https://github.com/stanleyhuangyc/Freematics/issues/7 .

Since ELM327 is working, I suspect there's a compatibility issue. I read several posts in forum discussing the same issue.

I have logic analyzer, oscilloscope and National Instrument CAN device. Do you have any recommendation to solve the problem, or do you want more information?