nfcpy and ACR122

Hi,
I'm trying to use nfcpy with ACS ACR122u reader, but get USB errors.
I have added:
     supported_devices.append((0x072f,0x2200)) # ACS
and changed output and input endpoints to:
        self.usb_out = intf[0].endpoints[1].address
        self.usb_inp = intf[0].endpoints[2].address
(because ACR reader interface has 3 endpoints descriptors:
      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 2
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x02 EP 2 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x82 EP 2 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
)
After that inp/out are the following: self.usb_out=2 self.usb_inp:130

The following exception appears:
Exception usb.USBError: 'No error' (on any self.dh.bulkWrite() command)
I tried to add 'except usb.USBError: return None', to avoid it, anyway there is no any response from the reader.

Am I doing something wrong? Is ACR122 really not supported?
Thanks!