USB_Audio_StdDescriptor_StreamEndpoint_Std_t Struct Reference

Audio class-specific Streaming Endpoint Descriptor (USB-IF naming conventions). More...

#include <AudioClassCommon.h>

Data Fields
uint8_t	bLength
uint8_t	bDescriptorType
uint8_t	bEndpointAddress
uint8_t	bmAttributes
uint16_t	wMaxPacketSize
uint8_t	bInterval
uint8_t	bRefresh
uint8_t	bSynchAddress

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Detailed Description

Type define for an Audio class-specific endpoint descriptor. This contains a regular endpoint descriptor with a few Audio-class-specific extensions. See the USB Audio specification for more details.

See also:

USB_Audio_Descriptor_StreamEndpoint_Std_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.

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Field Documentation

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bDescriptorType

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

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bEndpointAddress

Logical address of the endpoint within the device for the current configuration, including direction mask.

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bInterval

Polling interval in milliseconds for the endpoint if it is an INTERRUPT or ISOCHRONOUS type.

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bLength

Size of the descriptor, in bytes.

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bmAttributes

Endpoint attributes, comprised of a mask of the endpoint type (EP_TYPE_*) and attributes (ENDPOINT_ATTR_*) masks.

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bRefresh

Always set to zero for Audio class devices.

uint8_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::bSynchAddress

Endpoint address to send synchronization information to, if needed (zero otherwise).

uint16_t USB_Audio_StdDescriptor_StreamEndpoint_Std_t::wMaxPacketSize

Size of the endpoint bank, in bytes. This indicates the maximum packet size that the endpoint can receive at a time.

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

• Drivers/USB/Class/Common/AudioClassCommon.h