about USB control signal?

[nga_nguyen]

Hi friend,

Im studying the USB and want to extract the control information from USB bus signal. I mean I would like to know the direction of the information on USB bus at any time.

Hi, help me ok?

 

[dipal_z]

You will need USB Sniffer to analyze these signal try this
https://sourceforge.net/projects/usbsnoop/

 

[nga_nguyen]

Thank you for your help, but the thing I need is how to know the direction of the information on the USB bus live time ( I mean when the data is transfered on the bus)