#pragma once

#include <stdlib.h>

/*************************************************

 usb_spec.h
 
 Structures and Constants defined by USB 2.0 Spec.

*************************************************/

#include <stdint.h>

#define USB_VERSION_BCD	0x0110

#define DT_DEVICE				0x01
#define DT_CONFIGURATION		0x02
#define DT_STRING				0x03
#define DT_INTERFACE			0x04
#define DT_ENDPOINT			0x05
#define DT_DEVICE_QUALIFIER	0x06
#define DT_OTHER_SPEED_CONF	0x07
#define DT_INTERAFCE_POWER	0x08

#define USB_REQ_GET_STATUS			0x00
#define USB_REQ_CLEAR_FEATURE		0x01
#define USB_REQ_SET_FEATURE			0x03
#define USB_REQ_SET_ADDRESS			0x05
#define USB_REQ_GET_DESCRIPTOR		0x06
#define USB_REQ_SET_DESCRIPTOR		0x07
#define USB_REQ_GET_CONFIGURATION	0x08
#define USB_REQ_SET_CONFIGURATION	0x09
#define USB_REQ_GET_INTERFACE		0x0a
#define USB_REQ_SET_INTERFACE		0x0b
#define USB_REQ_SYNCH_FRAME			0x0c

#define REQT_HOSTTODEVICE		(0)
#define REQT_DEVICETOHOST		(1<<7)

#define REQT_STANDARD			(0)
#define REQT_CLASS				(1 << 5)
#define REQT_VENDOR				(2 << 5)

#define REQT_REC_DEVICE			(0)
#define REQT_REC_INTERFACE		(1)
#define REQT_REC_ENDPOINT		(2)
#define REQT_REC_OTHER			(3)

#define REQT_CHECK(bmrt,dir,type,recipient)	(bmrt == (dir | type | recipient))
#define REQT_CHECK_HOSTTODEVICE(bmrt)	((bmrt & REQT_HOSTTODEVICE) ? -1 : 0)

struct usb_descriptor_header;
struct usb_standard_device_descriptor;
struct usb_device_qualifier;
struct usb_standard_configuration_descriptor;
struct usb_other_speed_configuration;
struct usb_standard_interface_descriptor;
struct usb_standard_endpoint_descriptor;
struct usb_string_descriptor_zero;
struct usb_string_descriptor;

typedef struct usb_descriptor_header
	usb_descriptor_header_t;

typedef struct usb_standard_device_descriptor
	usb_standard_device_descriptor_t;
typedef struct usb_standard_endpoint_descriptor
	usb_standard_endpoint_descriptor_t;

typedef struct usb_device_request
	usb_device_request_t;


struct usb_descriptor_header
{
    uint8_t     bLength;
    uint8_t     bDescriptorType;	
};

struct usb_standard_device_descriptor
{
    uint8_t     bLength;
    uint8_t     bDescriptorType;
    uint16_t    bcdUSB;
    uint8_t     bDeviceClass;
    uint8_t     bDeviceSubClass;
    uint8_t     bDeviceProtocol;
    uint8_t     bMaxPacketSize0;
    uint16_t    idVendor,
                idProduct,
                bcdDevice;
    uint8_t     iManufacturer,
                iProduct,
                iSerialNumber,
                bNumConfigurations;
};

struct usb_device_qualifier
{
    uint8_t     bLength,
                bDescriptorType;
    uint16_t    bcdUSB;
    uint8_t     bDeviceClass,
                bDeviceSubClass,
                bDeviceProtocol,
                bMaxPacketSize0,
                bNumConfigurations,
                bReserved;
};

struct usb_standard_configuration_descriptor
{
    uint8_t     bLength,
                bDescriptorType;
    uint16_t    wTotalLength;
    uint8_t     bNumInterfaces,
                bConfigurationValue,
                iConfiguration,
                bmAttributes,
                bMaxPower;
};

struct usb_other_speed_configuration
{
    uint8_t     bLength,
                bDescriptorType;
    uint16_t    wTotalLength;
    uint8_t     bNumInterfaces,
                bConfigurationValue,
                iConfiguration,
                bmAttributes,
                bMaxPower;
};

struct usb_standard_interface_descriptor
{
    uint8_t     bLength,
                bDescriptorType,
                bInterfaceNumber,
                bAlternateSetting,
                bNumEndpoints,
                bInterfaceClass,
                bInterfaceSubClass,
                bInterfaceProtocol,
                iInterface;
};

struct usb_standard_endpoint_descriptor
{
    uint8_t     bLength,
                bDescriptorType,
                bEndpointAddress,
                bmAttributes;
    uint16_t    wMaxPacketSize;
    uint8_t     bInterval;
};

struct usb_string_descriptor
{
    uint8_t     bLength,
                bDescriptorType;
    wchar_t		data[0];
};




struct usb_device_request
{
	uint8_t	bmRequestType,
			bRequest;
	uint16_t	wValue,
			wIndex,
			wLength;
};