4.4.8.1.3 Definitions

#define USB_EP_DIR_IN 0x01u

Endpoint direction IN.

#define USB_EP_DIR_OUT 0x00u

Endpoint direction OUT.

#define OVERFLOW_EVENT 1u

Overflow event for the endpoint.

#define UNDERFLOW_EVENT 2u

Underflow event for the endpoint.

#define USB_V2_0 0x0200

USB Specification version 2.00.

#define USB_V2_1 0x0201

USB Specification version 2.01.

#define NO_SUBCLASS 0x00

No subclass code.

#define NO_PROTOCOL 0x00

No protocol code.

#define CLASS_IAD 0xEF

IAD class code.

#define SUB_CLASS_IAD 0x02

IAD subclass code.

#define PROTOCOL_IAD 0x01

IAD protocol code.

#define USB_ENDPOINT_FEATURE_HALT 0x00u

USB endpoint feature halt.

#define DESCRIPTOR_STRING_LENGTH(wstring) (sizeof(wstring) / sizeof(wchar_t) - 1)

Calculates descriptor length of a UTF-16 string descriptor without the null character.

#define USB_CONFIG_ATTR_MUST_SET (1u << 7u)

USB Attribute bitfield for the configuration descriptor.

#define USB_CONFIG_ATTR_BUS_POWERED (0u << 6u)

USB Attribute Bus Powered bitfield for the configuration descriptor.

#define USB_CONFIG_ATTR_SELF_POWERED (1u << 6u)

USB Attribute Self Powered bitfield for the configuration descriptor.

#define USB_CONFIG_ATTR_REMOTE_WAKEUP (1u << 5u)

USB Attribute Remote Wakeup bitfield for the configuration descriptor.

#define USB_CONFIG_MAX_POWER(ma) (((ma) + 1u) / 2u)

USB Max Power bitfield for the configuration descriptor.