Package ch.ntb.usb

Class Usb_Interface_Descriptor

java.lang.Object
ch.ntb.usb.Usb_Descriptor
ch.ntb.usb.Usb_Interface_Descriptor

public class Usb_Interface_Descriptor extends Usb_Descriptor
Represents the descriptor of a USB interface.
The interface descriptor could be seen as a header or grouping of the endpoints into a functional group performing a single feature of the device.

The length of the interface descriptor is Usb_Descriptor.USB_DT_INTERFACE_SIZE and the type is Usb_Descriptor.USB_DT_INTERFACE.
  • Field Details

    • USB_MAXINTERFACES

      public static final int USB_MAXINTERFACES
      Maximum number of interfaces
      See Also:
  • Constructor Details

    • Usb_Interface_Descriptor

      public Usb_Interface_Descriptor()
  • Method Details

    • toString

      public String toString()
      Overrides:
      toString in class Object
    • getBAlternateSetting

      public byte getBAlternateSetting()
      Returns the value used to select the alternate setting (LibusbJava.usb_set_altinterface(long, int)).
      Returns:
      the alternate setting
    • getBInterfaceClass

      public byte getBInterfaceClass()
      Returns the class code (Assigned by www.usb.org).
      Returns:
      the class code
    • getBInterfaceNumber

      public byte getBInterfaceNumber()
      Returns the number (identifier) of this interface.
      Returns:
      the number (identifier) of this interface
    • getBInterfaceProtocol

      public byte getBInterfaceProtocol()
      Returns the protocol code (Assigned by www.usb.org).
      Returns:
      the protocol code
    • getBInterfaceSubClass

      public byte getBInterfaceSubClass()
      Returns the subclass code (Assigned by www.usb.org).
      Returns:
      the subclass code
    • getBNumEndpoints

      public byte getBNumEndpoints()
      Returns the number of endpoints used for this interface.
      Returns:
      the number of endpoints used for this interface
    • getEndpoint

      public Usb_Endpoint_Descriptor[] getEndpoint()
      Returns an array of endpoint descriptors.
      Returns:
      an array of endpoint descriptors
    • getExtra

      public byte[] getExtra()
      Returns the data of extra descriptor(s) if available.
      Returns:
      null or a byte array with the extra descriptor data
    • getExtralen

      public int getExtralen()
      Returns the number of bytes of the extra descriptor.
      Returns:
      the number of bytes of the extra descriptor
    • getIInterface

      public byte getIInterface()
      Returns the index of the String descriptor describing this interface.
      Returns:
      the index of the String descriptor