usb listener / usb sniffer

[wut]

Does anybody knows whether it is possible to sniff usb traffic with LPC43xx cpu family? In a first try I analyse that with the "LPCXpresso4367 Development Board".

So before starting I wanted to check out whether one of you has any experiences with that and could give me any inital hints.

What I want? - Sniff usb FS and HS control transfer traffic between usb device and usb host, without any affects to their communication.
Which hardware do I want to use? - LPC43xx familiy, first of all LPC4367 (LPCXpresso4367 Development Board)

Thanks for help!

[ZhangJennie]

You can do this. But you need an external USB sinffer/analyzer. It's not possible to sniff  USB without external tool.

Sure a LPCXpresso4367  is necessary.

Have a nice day,

Jun Zhang

[wut]

Thank you for your replay!

But what do you mean with "external USB sinffer/analyzer"? Do you mean a external USB phy like "USB3500" (https://www.mouser.de/ProductDetail/microchip/usb3500-abzj/?qs=pA5MXup5wxHTF5ZKBBDtAA==&countrycode=...)?

So it is definitely not possible to sniff USB traffic via LPC4367 internal USB phy?

[ZhangJennie]

No. it's not chip. It's a tool.

Search USB Sniffer or USB protocol analyzer in google, you will find many of them,