/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.

This software may be distributed and modified under the terms of the GNU
General Public License version 2 (GPL2) as published by the Free Software
Foundation and appearing in the file GPL2.TXT included in the packaging of
this file. Please note that GPL2 Section 2[b] requires that all works based
on this software must also be made publicly available under the terms of
the GPL2 ("Copyleft").

Contact information
-------------------

Circuits At Home, LTD
Web      :  http://www.circuitsathome.com
e-mail   :  support@circuitsathome.com
*/
/* USB chapter 9 structures */

#ifndef USB_CH9_H_INCLUDED
#define USB_CH9_H_INCLUDED

#include <stdint.h>

/* Misc.USB constants */
#define DEV_DESCR_LEN   18      //device descriptor length
#define CONF_DESCR_LEN  9       //configuration descriptor length
#define INTR_DESCR_LEN  9       //interface descriptor length
#define EP_DESCR_LEN    7       //endpoint descriptor length

/* Standard Device Requests */

#define USB_REQUEST_GET_STATUS                  0       // Standard Device Request - GET STATUS
#define USB_REQUEST_CLEAR_FEATURE               1       // Standard Device Request - CLEAR FEATURE
#define USB_REQUEST_SET_FEATURE                 3       // Standard Device Request - SET FEATURE
#define USB_REQUEST_SET_ADDRESS                 5       // Standard Device Request - SET ADDRESS
#define USB_REQUEST_GET_DESCRIPTOR              6       // Standard Device Request - GET DESCRIPTOR
#define USB_REQUEST_SET_DESCRIPTOR              7       // Standard Device Request - SET DESCRIPTOR
#define USB_REQUEST_GET_CONFIGURATION           8       // Standard Device Request - GET CONFIGURATION
#define USB_REQUEST_SET_CONFIGURATION           9       // Standard Device Request - SET CONFIGURATION
#define USB_REQUEST_GET_INTERFACE               10      // Standard Device Request - GET INTERFACE
#define USB_REQUEST_SET_INTERFACE               11      // Standard Device Request - SET INTERFACE
#define USB_REQUEST_SYNCH_FRAME                 12      // Standard Device Request - SYNCH FRAME

#define USB_FEATURE_ENDPOINT_HALT               0       // CLEAR/SET FEATURE - Endpoint Halt
#define USB_FEATURE_DEVICE_REMOTE_WAKEUP        1       // CLEAR/SET FEATURE - Device remote wake-up
#define USB_FEATURE_TEST_MODE                   2       // CLEAR/SET FEATURE - Test mode

/* Setup Data Constants */

#define USB_SETUP_HOST_TO_DEVICE                0x00    // Device Request bmRequestType transfer direction - host to device transfer
#define USB_SETUP_DEVICE_TO_HOST                0x80    // Device Request bmRequestType transfer direction - device to host transfer
#define USB_SETUP_TYPE_STANDARD                 0x00    // Device Request bmRequestType type - standard
#define USB_SETUP_TYPE_CLASS                    0x20    // Device Request bmRequestType type - class
#define USB_SETUP_TYPE_VENDOR                   0x40    // Device Request bmRequestType type - vendor
#define USB_SETUP_RECIPIENT_DEVICE              0x00    // Device Request bmRequestType recipient - device
#define USB_SETUP_RECIPIENT_INTERFACE           0x01    // Device Request bmRequestType recipient - interface
#define USB_SETUP_RECIPIENT_ENDPOINT            0x02    // Device Request bmRequestType recipient - endpoint
#define USB_SETUP_RECIPIENT_OTHER               0x03    // Device Request bmRequestType recipient - other

/* USB descriptors  */

#define USB_DESCRIPTOR_DEVICE           0x01    // bDescriptorType for a Device Descriptor.
#define USB_DESCRIPTOR_CONFIGURATION    0x02    // bDescriptorType for a Configuration Descriptor.
#define USB_DESCRIPTOR_STRING           0x03    // bDescriptorType for a String Descriptor.
#define USB_DESCRIPTOR_INTERFACE        0x04    // bDescriptorType for an Interface Descriptor.
#define USB_DESCRIPTOR_ENDPOINT         0x05    // bDescriptorType for an Endpoint Descriptor.
#define USB_DESCRIPTOR_DEVICE_QUALIFIER 0x06    // bDescriptorType for a Device Qualifier.
#define USB_DESCRIPTOR_OTHER_SPEED      0x07    // bDescriptorType for a Other Speed Configuration.
#define USB_DESCRIPTOR_INTERFACE_POWER  0x08    // bDescriptorType for Interface Power.
#define USB_DESCRIPTOR_OTG              0x09    // bDescriptorType for an OTG Descriptor.

#define HID_DESCRIPTOR_HID			0x21



/* OTG SET FEATURE Constants    */
#define OTG_FEATURE_B_HNP_ENABLE                3       // SET FEATURE OTG - Enable B device to perform HNP
#define OTG_FEATURE_A_HNP_SUPPORT               4       // SET FEATURE OTG - A device supports HNP
#define OTG_FEATURE_A_ALT_HNP_SUPPORT           5       // SET FEATURE OTG - Another port on the A device supports HNP

/* USB Endpoint Transfer Types  */
#define USB_TRANSFER_TYPE_CONTROL               0x00    // Endpoint is a control endpoint.
#define USB_TRANSFER_TYPE_ISOCHRONOUS           0x01    // Endpoint is an isochronous endpoint.
#define USB_TRANSFER_TYPE_BULK                  0x02    // Endpoint is a bulk endpoint.
#define USB_TRANSFER_TYPE_INTERRUPT             0x03    // Endpoint is an interrupt endpoint.
#define bmUSB_TRANSFER_TYPE                     0x03    // bit mask to separate transfer type from ISO attributes


/* Standard Feature Selectors for CLEAR_FEATURE Requests    */
#define USB_FEATURE_ENDPOINT_STALL              0       // Endpoint recipient
#define USB_FEATURE_DEVICE_REMOTE_WAKEUP        1       // Device recipient
#define USB_FEATURE_TEST_MODE                   2       // Device recipient

_Pragma("pack(1)")

/* descriptor data structures */

/* Device descriptor structure */
typedef struct
{
    uint8_t		bLength;               // Length of this descriptor.
    uint8_t		bDescriptorType;       // DEVICE descriptor type (USB_DESCRIPTOR_DEVICE).
    uint16_t	bcdUSB;				   // USB Spec Release Number (BCD).
    uint8_t		bDeviceClass;          // Class code (assigned by the USB-IF). 0xFF-Vendor specific.
    uint8_t		bDeviceSubClass;       // Subclass code (assigned by the USB-IF).
    uint8_t		bDeviceProtocol;       // Protocol code (assigned by the USB-IF). 0xFF-Vendor specific.
    uint8_t		bMaxPacketSize0;       // Maximum packet size for endpoint 0.
    uint16_t	idVendor;			   // Vendor ID (assigned by the USB-IF).
    uint16_t	idProduct;			   // Product ID (assigned by the manufacturer).
    uint16_t	bcdDevice;			   // Device release number (BCD).
    uint8_t		iManufacturer;         // Index of String Descriptor describing the manufacturer.
    uint8_t		iProduct;              // Index of String Descriptor describing the product.
    uint8_t		iSerialNumber;         // Index of String Descriptor with the device's serial number.
    uint8_t		bNumConfigurations;    // Number of possible configurations.
} USB_DEVICE_DESCRIPTOR;

/* Configuration descriptor structure */
typedef struct
{
    uint8_t bLength;               // Length of this descriptor.
    uint8_t bDescriptorType;       // CONFIGURATION descriptor type (USB_DESCRIPTOR_CONFIGURATION).
    uint16_t wTotalLength;          // Total length of all descriptors for this configuration.
    uint8_t bNumInterfaces;        // Number of interfaces in this configuration.
    uint8_t bConfigurationValue;   // Value of this configuration (1 based).
    uint8_t iConfiguration;        // Index of String Descriptor describing the configuration.
    uint8_t bmAttributes;          // Configuration characteristics.
    uint8_t bMaxPower;             // Maximum power consumed by this configuration.
} USB_CONFIGURATION_DESCRIPTOR;

/* Interface descriptor structure */
typedef struct
{
    uint8_t bLength;               // Length of this descriptor.
    uint8_t bDescriptorType;       // INTERFACE descriptor type (USB_DESCRIPTOR_INTERFACE).
    uint8_t bInterfaceNumber;      // Number of this interface (0 based).
    uint8_t bAlternateSetting;     // Value of this alternate interface setting.
    uint8_t bNumEndpoints;         // Number of endpoints in this interface.
    uint8_t bInterfaceClass;       // Class code (assigned by the USB-IF).  0xFF-Vendor specific.
    uint8_t bInterfaceSubClass;    // Subclass code (assigned by the USB-IF).
    uint8_t bInterfaceProtocol;    // Protocol code (assigned by the USB-IF).  0xFF-Vendor specific.
    uint8_t iInterface;            // Index of String Descriptor describing the interface.
} USB_INTERFACE_DESCRIPTOR;

/* Endpoint descriptor structure */
typedef struct
{
    uint8_t bLength;               // Length of this descriptor.
    uint8_t bDescriptorType;       // ENDPOINT descriptor type (USB_DESCRIPTOR_ENDPOINT).
    uint8_t bEndpointAddress;      // Endpoint address. Bit 7 indicates direction (0=OUT, 1=IN).
    uint8_t bmAttributes;          // Endpoint transfer type.
    uint16_t wMaxPacketSize;       // Maximum packet size.
    uint8_t bInterval;             // Polling interval in frames.
} USB_ENDPOINT_DESCRIPTOR;


/* HID descriptor */
typedef struct
{
    uint8_t		bLength;
	uint8_t		bDescriptorType;
	uint16_t	bcdHID;					// HID class specification release
    uint8_t		bCountryCode;
	uint8_t		bNumDescriptors;		// Number of additional class specific descriptors
	uint8_t		bDescrType;				// Type of class descriptor
    uint16_t	wDescriptorLength;		// Total size of the Report descriptor
} USB_HID_DESCRIPTOR;

typedef struct
{
	uint8_t		bDescrType;				// Type of class descriptor
    uint16_t	wDescriptorLength;		// Total size of the Report descriptor
} HID_CLASS_DESCRIPTOR_LEN_AND_TYPE;

_Pragma("pack()")

#endif /* USB_CH9_H_INCLUDED */
