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FabulaTech Forum USB Solutions USB Monitor Pro (Moderators: Sergey_Jarovski, Andrew, Tim_GaliullinFT) USBMonitor does not display data No topic | Next topic
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   Author  Topic: USBMonitor does not display data  (Read 6936 times)
VxerLee
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USBMonitor does not display data
on: Feb 24th, 2021, 6:10am 		Quote Quote  Modify Modify
Hi！  
https://imgur.com/2Cdb3Pi  
The USB Monitor clearly shows that the Transfer Size has 4096 bytes, but there is no data displayed on the data display interface. What's going on here?
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Sergey_Jarovski
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Re: USBMonitor does not display data
Reply #1 on: Feb 24th, 2021, 9:58am 		Quote Quote  Modify Modify
Hi,
 
This is an in-urb (a request to read from a device), the data is in the response urb from the device (marked as OUT in usbmon). In this case, the response urb returned with an error, so the buffer is not displayed (there is garbage, there is no point in displaying it).
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Sergey Jarovski

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