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USB_CDC_StdDescriptor_FunctionalUnion_t Struct Reference
Common Class Definitions

CDC class-specific Functional Union Descriptor (USB-IF naming conventions). More...

`#include <CDCClassCommon.h>`

## Data Fields
uint8_t | bDescriptorSubType
uint8_t | bDescriptorType
uint8_t | bFunctionLength
uint8_t | bMasterInterface
uint8_t | bSlaveInterface0

## Detailed Description

Type define for a CDC class-specific functional Union descriptor. This indicates to the host that specific CDC control and data interfaces are related. See the CDC class specification for more details.

See also
  USB_CDC_Descriptor_FunctionalUnion_t for the version of this type with non-standard LUFA specific element names.

Note
  Regardless of CPU architecture, these values should be stored as little endian.

## Field Documentation

uint8_t USB_CDC_StdDescriptor_FunctionalUnion_t::bDescriptorSubType

Sub type value used to distinguish between CDC class-specific descriptors, must be CDC_DSUBTYPE_CSInterface_Union.

uint8_t USB_CDC_StdDescriptor_FunctionalUnion_t::bDescriptorType

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

uint8_t USB_CDC_StdDescriptor_FunctionalUnion_t::bFunctionLength

Size of the descriptor, in bytes.

uint8_t USB_CDC_StdDescriptor_FunctionalUnion_t::bMasterInterface

Interface number of the CDC Control interface.

uint8_t USB_CDC_StdDescriptor_FunctionalUnion_t::bSlaveInterface0

Interface number of the CDC Data interface.

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

- Drivers/USB/Class/Common/CDCClassCommon.h