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Analyzing USB (lemmy.world)

submitted 1 month ago* (last edited 1 month ago) by za_warudo_steve_freiheit@lemmy.world to c/ece@lemmy.world

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How do people use an oscilloscope to analyze USB packets and such? I saw a video by Ben Eater and the way he did it was by exposing the necessary wires of a USB cable and probing those. Is this standard or are there types out there that have this functionally built-in as some accessory or something?

Edit: logic analyzers are pretty interesting

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[–] Shadow@lemmy.ca 5 points 1 month ago (2 children)

FYI you can also just use wireshark

[–] za_warudo_steve_freiheit@lemmy.world 2 points 1 month ago (1 children)

Wireshark can do USB protocol analysis?????

[–] SteveTech@aussie.zone 3 points 1 month ago

Depends on how low level you need. If you're just looking at the data being sent, then Wireshark will work fine; I've even used it to help reverse engineer a UPS. If you're investigating interference/timing/collisions/whatever then you'd need a scope or logic analyser.

[–] SteveTech@aussie.zone 1 points 1 month ago* (last edited 1 month ago)

Deleted - Replied to wrong comment.