bmAttributes property
Attributes which apply to the endpoint when it is configured using the bConfigurationValue. Bits 0:1 determine the transfer type and correspond to \ref libusb_transfer_type. Bits 2:3 are only used for isochronous endpoints and correspond to \ref libusb_iso_sync_type. Bits 4:5 are also only used for isochronous endpoints and correspond to \ref libusb_iso_usage_type. Bits 6:7 are reserved.
Implementation
@ffi.Uint8()
external int bmAttributes;