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https://wiki.wireshark.org/CaptureSetup/USB https://wiki.wireshark.org/CaptureSetup/USB says "Software USB capture captures URBs (USB Request Blocks) rather tha
by em3rgent0rdr 2y ago
https://wiki.wireshark.org/CaptureSetup/USB https://wiki.wireshark.org/CaptureSetup/USB says "Software USB capture captures URBs (USB Request Blocks) rather than raw USB packets." So Wireshark couldn't give you the CRC, which would be stripped away.
You could hypothetically use a really-really high bandwidth oscilloscope (like 2 GHz to view 480 MHz USB HS signals), but those are expensive. So you would have to resort to using external USB sniffer...out of curiosity I found someone made a sniffer that is basically a USB-capable microcontroller plus an FPGA and a USB PHY: https://hackaday.com/2023/06/13/cheap-usb-sniffer-has-wireshark-interface/ https://hackaday.com/2023/06/13/cheap-usb-sniffer-has-wiresh...