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Author Topic: CAN timing with MCP  (Read 6269 times)
woj
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« Reply #15 on: December 26, 2017, 05:48:14 AM »

Problem solved, as usual it was a one-liner in the code. The interrupt based message arrival notification does not work with the real car CAN traffic, I suspect the Arduino is simply flooded with interrupt requests and shits itself. API based polling solved the problem.
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tao13
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« Reply #16 on: January 02, 2020, 09:56:29 AM »

Hi.
I have an mcp shield and arduino.
If i sniffing my ecu me7.5 i get some pids with many value who are send by the ecu every 50-100ms.
I try to send some message to me7.5 to get pid values who is not send automaticaly by ecu but without any result.
First question is if i initiate some protocol before send request from ecu on can?
Second, this is my message who i send on canbus and i'm waiting an answer, but ecu not respnd:
{0X7eDF, 0x02, 0x01, pid, 0, 0, 0, 0, 0};
pid can be 0x05 ..... all pid from standard obd2 pids
Thanks in advance from your help
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