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/**
 * @file
 * @brief useful constants and macros for the USB application
 *
 * This file contains useful constants and macros for the USB applications.
 */

#ifndef USB_COMMON_H_
#define USB_COMMON_H_

/* Decriptor size in bytes */
#define USB_DEVICE_DESC_SIZE            18
#define USB_CONFIGURATION_DESC_SIZE     9
#define USB_INTERFACE_DESC_SIZE         9
#define USB_ENDPOINT_DESC_SIZE          7
#define USB_STRING_DESC_SIZE            4
#define USB_HID_DESC_SIZE               9
#define USB_DFU_DESC_SIZE               9

/* Descriptor type */
#define USB_DEVICE_DESC                 0x01
#define USB_CONFIGURATION_DESC          0x02
#define USB_STRING_DESC                 0x03
#define USB_INTERFACE_DESC              0x04
#define USB_ENDPOINT_DESC               0x05
#define USB_HID_DESC                    0x21
#define USB_HID_REPORT_DESC             0x22
#define USB_DFU_FUNCTIONAL_DESC         0x21

/* Useful define */
#define USB_1_1                         0x0110

#define BCDDEVICE_RELNUM                0x0100

/* 100mA max power, per 2mA units */
/* USB 1.1 spec indicates 100mA(max) per unit load, up to 5 loads */
#define MAX_LOW_POWER                   0x32
#define MAX_HIGH_POWER                  0xFA

/* bmAttributes:
 * D7:Reserved, always 1,
 * D6:Self-Powered -> 1,
 * D5:Remote Wakeup -> 0,
 * D4...0:Reserved -> 0
 */
#define USB_CONFIGURATION_ATTRIBUTES    0xC0

/* Classes */
#define COMMUNICATION_DEVICE_CLASS      0x02
#define COMMUNICATION_DEVICE_CLASS_DATA 0x0A
#define HID_CLASS                       0x03
#define MASS_STORAGE_CLASS              0x08
#define CUSTOM_CLASS                    0xFF
#define DFU_CLASS                       0xFE

/* Sub-classes */
#define ACM_SUBCLASS                    0x02
#define BOOT_INTERFACE_SUBCLASS         0x01
#define SCSI_TRANSPARENT_SUBCLASS       0x06
#define DFU_INTERFACE_SUBCLASS          0x01

/* Protocols */
#define V25TER_PROTOCOL                 0x01
#define MOUSE_PROTOCOL                  0x02
#define BULK_ONLY_PROTOCOL              0x50
#define DFU_RUNTIME_PROTOCOL            0x01
#define DFU_MODE_PROTOCOL               0x02

#endif /* USB_COMMON_H_ */