usb_device_qualifier_descriptor Struct Reference

Data Fields
uint8_t	bLength
	should be 10 bytes
uint8_t	bDescriptorType
	always USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER
uint16_t	bcdUSB
	the USB revision
uint8_t	bDeviceClass
	USB device class code (defined by USB-IF)
uint8_t	bDeviceSubClass
	SB Device subclass code (defined by USB-IF)
uint8_t	bDeviceProtocol
	the device protocol to be used
uint8_t	bMaxPacketSize0
	maximum packet size of endpoint 0
uint8_t	bNumConfigurations
	the number of configurations
uint8_t	bReserved
	always zero

Detailed Description

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USB Device Qualifier Descriptor (USB Specification, Rev 2.0, Section 9.6.2)

This descriptor contains information about a high-speed capable device that would change, if the device is operating at other speed:

• device runs at full speed -> descriptor returns values for high speed.

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

• include/usb/usb_descriptor.h