URB Macros

To initialize URB structures for different transfer types there exist some macros:

• FILL_CONTROL_URB(purb, dev, pipe, setup_packet, transfer_buffer, transfer_buffer_length, complete, context);

• FILL_BULK_URB(purb, dev, pipe, transfer_buffer, transfer_buffer_length, complete, context);

• FILL_INT_URB(purb, dev, pipe, transfer_buffer, transfer_buffer_length, complete, context, interval);

• FILL_CONTROL_URB_TO();

• FILL_BULK_URB_TO();

The macros are self explaining - more documentation can be found in the include file usb.h.