On Tue, 2020-12-15 at 22:20 +0100, Marc Kleine-Budde wrote: > You can sniff the USB traffic with wireshark... > > https://wiki.wireshark.org/CaptureSetup/USB Yeah. The mentioned last can_frame is never sent. I am not that aware of the usb protocol and I am currently not able to parse what is actually happening after frame No. 259 in the attached pcap. Nevertheless, it never sends the "25 FF". Stefan
Attachment:
pcap-sniff.pcap.gz
Description: application/vnd.tcpdump.pcap