cy_stc_usbdev_endpoint_descr_t Struct Reference

Description

Endpoint descriptor.

Data Fields
uint8_t	bLength
	Size of Descriptor in Bytes.
uint8_t	bDescriptorType
	Endpoint Descriptor.
uint8_t	bEndpointAddress
	Endpoint Address: Bits 0..3 Endpoint Number. More...
uint8_t	bmAttributes
	Bitmap: Bits 0..1 Transfer Type: 00 = Control, 01 = Isochronous, 10 = Bulk, 11 = Interrupt Bits 2..7 are reserved. More...
uint16_t	wMaxPacketSize
	Maximum Packet Size this endpoint is capable of sending or receiving.
uint8_t	bInterval
	Interval for polling endpoint data transfers. More...

Field Documentation

bEndpointAddress

uint8_t cy_stc_usbdev_endpoint_descr_t::bEndpointAddress

Endpoint Address: Bits 0..3 Endpoint Number.

Bits 4..6 Reserved. Set to Zero Bit 7 Direction 0 = Out, 1 = In (Ignored for Control Endpoints)

bmAttributes

uint8_t cy_stc_usbdev_endpoint_descr_t::bmAttributes

Bitmap: Bits 0..1 Transfer Type: 00 = Control, 01 = Isochronous, 10 = Bulk, 11 = Interrupt Bits 2..7 are reserved.

If Isochronous endpoint, Bits 3..2: Synchronization Type (Iso Mode): 00 = No Synchronization, 01 = Asynchronous, 10 = Adaptive, 11 = Synchronous Bits 5..4 = Usage Type (Iso Mode): 00 = Data Endpoint, 01 = Feedback Endpoint, 10 = Explicit Feedback Data Endpoint, 11 = Reserved

bInterval

uint8_t cy_stc_usbdev_endpoint_descr_t::bInterval

Interval for polling endpoint data transfers.

Value in frame counts. Ignored for Bulk & Control Endpoints. Isochronous must equal 1 and field may range from 1 to 255 for interrupt endpoints.