[pyusb-users] reading interrupt endpoints

[ragman <ga...@gm...>]

Hi Folks,

USB newbie here.  I'm trying to (understand and)  read data from an
interrupt endpoint:
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval               8

using:
 print dev.read(0x81,8,0,1000)

But I'm getting timouts every time, no matter the timout setting.  As
I'm still learning USB I'm guessing I misunderstand (most of it)
interuppt endpoints.

busdog shows me that the native software reads 2 bytes device every 60 seconds.
Any help would be...helpful and much appreciated.

Thanx,
D