Phantom messages being sent to Interrupt OUT on a specific USB HID
in [Device Drivers]
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From: dfclark on 8 Jan 2010 08:08 I am using an Ellisys USB Tracker, and the tool is showing that there is a stream of messages being sent to endpoint 2 on my HID device, regularly once per second. My application that uses the device is not running - in fact, I've re-booted XP and the only thing running is Ellisys Visual USB. With the HID device plugged into that machine I see these 31-byte messages (in hex): 55 53 42 43 B0 EA D8 8A 00 00 00 00 00 00 06 00 ... all rest are zeros With other HID devices plugged in I don't see the traffic, it's only with this specific device PID (more than one instance of the device shows the same behavior). With this device plugged into my Vista machine I don't see the traffic. This started after installing the WDK 7.0.0, but has persisted after uninstalling the WDK and re-booting. Does anyone have any ideas of the source of these reports?
From: Tim Roberts on 10 Jan 2010 20:26
dfclark <dfclark(a)discussions.microsoft.com> wrote: > >I am using an Ellisys USB Tracker, and the tool is showing that there is a >stream of messages being sent to endpoint 2 on my HID device, regularly once >per second. My application that uses the device is not running - in fact, >I've re-booted XP and the only thing running is Ellisys Visual USB. With the >HID device plugged into that machine I see these 31-byte messages (in hex): >55 53 42 43 B0 EA D8 8A 00 00 00 00 00 00 06 00 ... all rest are zeros That's a USB Mass Storage device packet. The first four bytes are the string "USBC", which is a big hint. So, either your device is masquerading as a mass storage device, or you are seeing packets for another device. -- Tim Roberts, timr(a)probo.com Providenza & Boekelheide, Inc. |