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CAN communication decoding question

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CAN communication decoding question

Postby claritydnb » Wed May 16, 2018 3:44 pm

I am new to this topic. I am using a PicoScope 2000 series and am looking to sniff out some information being sent over the CAN network. The software is great for this, however, All of the messages i am seeing contain what is called "Stuffed Bits." What does it mean by stuffed bit? Thank you for your time regarding this matter.

Mike
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Re: CAN communication decoding question

Postby bennog » Fri May 18, 2018 1:28 pm

this are bits in opposite direction inserted in the data stream if 5 or more consecutive bits are to be send.
This is done to keep internal timing in sync and to force a message resend by one of the nodes.

See link below
https://en.wikipedia.org/wiki/CAN_bus#Bit_stuffing

Benno
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