Hi guys, is there any way I can see each data byte separate on the graph? What I mean is that I am interested in seeing data byte "1F" on the graph. Can PicoScope6 calculate or show me with rulers that specific data byte I'm looking for on the graph? Please see I attached photo with it. Thanks, Lukasz.
That will be great if any news will be updated into this post
Also I was working on that graph since I post a topic. What I have found out is, that you can calculate yourself the CAN frame format, which is on wikipedia (http://en.wikipedia.org/wiki/CAN_bus) "Base Frame Format" Heading, half way threw the page. So I started calculate/measuring and everything seems to be right till I hit my Data Bytes.
Example: DB1: -From the Data Bytes clearly you can see DB1 is 0 where on the graph by my calculation is 1.
I just want to share what I have found out that could help ye guys maybe. Thanks for answer Hitesh.
Regards,
Lukasz
Last edited by Lukasz Matuszak on Thu Oct 09, 2014 3:02 pm, edited 1 time in total.
So I started calculate/measuring and everything seems to be right till I hit my Data Bytes.
Example: DB1: -From the Data Bytes clearly you can see DB1 is 0 where on the graph by my calculation is 1.
Did you take into account bit-stuffing? I see lots of contiguous 0's in your data stream.
So I started calculate/measuring and everything seems to be right till I hit my Data Bytes.
Example: DB1: -From the Data Bytes clearly you can see DB1 is 0 where on the graph by my calculation is 1.
Did you take into account bit-stuffing? I see lots of contiguous 0's in your data stream.
Hi Mark_O
Your right there is bit stuffing. "In CAN frames, a bit of opposite polarity is inserted after five consecutive bits of the same polarity". I was doing this so fast that after posting my reply I was reading it again and I have to say I made mistake. Please see I attached photo in which I can tell where "1F" Data is.