TinyUsb系统控制报告描述符

0x05, 0x01,        // Usage Page (Generic Desktop Ctrls)
0x09, 0x80,        // Usage (Sys Control)
0xA1, 0x01,        // Collection (Application)
0x15, 0x01,        //   Logical Minimum (1)
0x25, 0x03,        //   Logical Maximum (3)
0x95, 0x01,        //   Report Count (1)
0x75, 0x02,        //   Report Size (2)
0x09, 0x81,        //   Usage (Sys Power Down)
0x09, 0x82,        //   Usage (Sys Sleep)
0x09, 0x83,        //   Usage (Sys Wake Up)
0x81, 0x00,        //   Input (Data,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x95, 0x01,        //   Report Count (1)
0x75, 0x06,        //   Report Size (6)
0x81, 0x01,        //   Input (Const,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0,              // End Collection

// 29 bytes

宏定义：

/* System Control Report Descriptor Template
 * 0x00 - do nothing
 * 0x01 - Power Off
 * 0x02 - Standby
 * 0x03 - Wake Host
 */
#define TUD_HID_REPORT_DESC_SYSTEM_CONTROL(...) \
  HID_USAGE_PAGE ( HID_USAGE_PAGE_DESKTOP           )        ,\
  HID_USAGE      ( HID_USAGE_DESKTOP_SYSTEM_CONTROL )        ,\
  HID_COLLECTION ( HID_COLLECTION_APPLICATION       )        ,\
    /* Report ID if any */\
    /* 2 bit system power control */ \
    HID_LOGICAL_MIN  ( 1                                   ) ,\
    HID_LOGICAL_MAX  ( 3                                   ) ,\
    HID_REPORT_COUNT ( 1                                   ) ,\
    HID_REPORT_SIZE  ( 2                                   ) ,\
    HID_USAGE        ( HID_USAGE_DESKTOP_SYSTEM_POWER_DOWN ) ,\
    HID_USAGE        ( HID_USAGE_DESKTOP_SYSTEM_SLEEP      ) ,\
    HID_USAGE        ( HID_USAGE_DESKTOP_SYSTEM_WAKE_UP    ) ,\
    HID_INPUT        ( HID_DATA | HID_ARRAY | HID_ABSOLUTE ) ,\
    /* 6 bit padding */ \
    HID_REPORT_COUNT ( 1                                   ) ,\
    HID_REPORT_SIZE  ( 6                                   ) ,\
    HID_INPUT        ( HID_CONSTANT                        ) ,\
  HID_COLLECTION_END \