LUFA Library  151115
USB_StdDescriptor_Device_t Struct Reference

Standard USB Device Descriptor (USB-IF naming conventions). More...

#include <StdDescriptors.h>

Data Fields

uint16_t bcdDevice
uint16_t bcdUSB
uint8_t bDescriptorType
uint8_t bDeviceClass
uint8_t bDeviceProtocol
uint8_t bDeviceSubClass
uint8_t bLength
uint8_t bMaxPacketSize0
uint8_t bNumConfigurations
uint16_t idProduct
uint16_t idVendor
uint8_t iManufacturer
uint8_t iProduct
uint8_t iSerialNumber

Detailed Description

Type define for a standard Device Descriptor. This structure uses the relevant standard's given element names to ensure compatibility with the standard.

See also
USB_Descriptor_Device_t for the version of this type with non-standard LUFA specific element names.
Regardless of CPU architecture, these values should be stored as little endian.

Field Documentation

uint16_t USB_StdDescriptor_Device_t::bcdDevice

Product release (version) number.

See also
VERSION_BCD() utility macro.
uint16_t USB_StdDescriptor_Device_t::bcdUSB

BCD of the supported USB specification.

See also
VERSION_BCD() utility macro.
uint8_t USB_StdDescriptor_Device_t::bDescriptorType

Type of the descriptor, either a value in USB_DescriptorTypes_t or a value given by the specific class.

uint8_t USB_StdDescriptor_Device_t::bDeviceClass

USB device class.

uint8_t USB_StdDescriptor_Device_t::bDeviceProtocol

USB device protocol.

uint8_t USB_StdDescriptor_Device_t::bDeviceSubClass

USB device subclass.

uint8_t USB_StdDescriptor_Device_t::bLength

Size of the descriptor, in bytes.

uint8_t USB_StdDescriptor_Device_t::bMaxPacketSize0

Size of the control (address 0) endpoint's bank in bytes.

uint8_t USB_StdDescriptor_Device_t::bNumConfigurations

Total number of configurations supported by the device.

uint16_t USB_StdDescriptor_Device_t::idProduct

Unique product ID for the USB product.

uint16_t USB_StdDescriptor_Device_t::idVendor

Vendor ID for the USB product.

uint8_t USB_StdDescriptor_Device_t::iManufacturer

String index for the manufacturer's name. The host will request this string via a separate control request for the string descriptor.

If no string supplied, use NO_DESCRIPTOR.
uint8_t USB_StdDescriptor_Device_t::iProduct

String index for the product name/details.

See also
ManufacturerStrIndex structure entry.
uint8_t USB_StdDescriptor_Device_t::iSerialNumber

String index for the product's globally unique hexadecimal serial number, in uppercase Unicode ASCII.

On some microcontroller models, there is an embedded serial number in the chip which can be used for the device serial number. To use this serial number, set this to USE_INTERNAL_SERIAL. On unsupported devices, this will evaluate to NO_DESCRIPTOR and will cause the host to generate a pseudo-unique value for the device upon insertion.
See also
ManufacturerStrIndex structure entry.

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