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sending vendor specific commands to mass storage device



hi all,

I already posted the message below to the mass storage
list but since it also falls into the category of USB
development I'm also posting it here. 

---

I'm investigating whether to use HID or Mass storage
for my device hardware (audio player). Currently it is
a HID device but I need mass storage functionality to
transfer files to the memory of the device, so I'm
thinking of switching to that class. 

However, I still need to send device-specific commands
such as 'adjust volume'. How do I do this from an
application without writing drivers? 

thanks in advance,

Bert


	


		
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