libusb_config_descriptor Struct Reference
[USB descriptors]

A structure representing the standard USB configuration descriptor. More...

#include <libusb.h>


Data Fields

uint8_t bLength
 Size of this descriptor (in bytes).
uint8_t bDescriptorType
 Descriptor type.
uint16_t wTotalLength
 Total length of data returned for this configuration.
uint8_t bNumInterfaces
 Number of interfaces supported by this configuration.
uint8_t bConfigurationValue
 Identifier value for this configuration.
uint8_t iConfiguration
 Index of string descriptor describing this configuration.
uint8_t bmAttributes
 Configuration characteristics.
uint8_t MaxPower
 Maximum power consumption of the USB device from this bus in this configuration when the device is fully opreation.
struct libusb_interfaceinterface
 Array of interfaces supported by this configuration.
const unsigned char * extra
 Extra descriptors.
int extra_length
 Length of the extra descriptors, in bytes.


Detailed Description

A structure representing the standard USB configuration descriptor.

This descriptor is documented in section 9.6.3 of the USB 2.0 specification. All multiple-byte fields are represented in host-endian format.


Field Documentation

Descriptor type.

Will have value libusb_descriptor_type::LIBUSB_DT_CONFIG LIBUSB_DT_CONFIG in this context.

Maximum power consumption of the USB device from this bus in this configuration when the device is fully opreation.

Expressed in units of 2 mA.

Array of interfaces supported by this configuration.

The length of this array is determined by the bNumInterfaces field.

const unsigned char* libusb_config_descriptor::extra

Extra descriptors.

If libusb encounters unknown configuration descriptors, it will store them here, should you wish to parse them.

Length of the extra descriptors, in bytes.


The documentation for this struct was generated from the following file:

Generated on Thu Oct 14 14:56:36 2010 for libusb by  doxygen 1.5.9