Author Topic: Capturing a bunch of CAN-frames, where one might be missing - (SDS800X)  (Read 1119 times)

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Offline Electro Fan

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Re: Capturing a bunch of CAN-frames, where one might be missing - (SDS800X)
« Reply #25 on: March 25, 2024, 12:35:27 am »
The MCP2515 is a very common hobbyist CAN-to-SPI chip.  If you can program and are familiar with the Arduino environment, you could use a $20 CAN+Processor board, e.g. https://www.adafruit.com/product/5724, to decode the CAN stream live and generate a trigger for your oscilloscope.  This would let you zoom in on the analog waveforms.

https://youtu.be/MEkKPNr-KBk
 

Offline eTobeyTopic starter

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Re: Capturing a bunch of CAN-frames, where one might be missing - (SDS800X)
« Reply #26 on: March 25, 2024, 05:49:04 am »
If missing and like this ----- ---- it should be easy to trigger on where the frame should be.

You guys drove me nuts, saying i could find something i could not "see", but now i understand why. Problem is, you did not know, how that stream of frames (is my terminology right here?) really looks like. It is not a konstant frames every x us. So i could not use any "time and level" trigger.

As my problem seems to have dissappeared, id say, we can focus now on other topics/things, but if anyone has another good idea, your´re welcome. Using a board to trigger the scope was the best so far for me.
"Sometimes, after talking with a person, you want to pet a dog, wave at a monkey, and take off your hat to an elephant." (Maxim Gorki)
 


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