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Chapter 9
static CPU_INT08U App_USBD_HID_ReportDesc[] = { (1)
USBD_HID_GLOBAL_USAGE_PAGE + 1, USBD_HID_USAGE_PAGE_GENERIC_DESKTOP_CONTROLS, (2)
USBD_HID_LOCAL_USAGE + 1, USBD_HID_CA_MOUSE, (3)
USBD_HID_MAIN_COLLECTION
+ 1, USBD_HID_COLLECTION_APPLICATION,
(4)
9
USBD_HID_LOCAL_USAGE
USBD_HID_MAIN_COLLECTION
+ 1, USBD_HID_CP_POINTER,
+ 1, USBD_HID_COLLECTION_PHYSICAL,
(5)
(6)
(7)
USBD_HID_GLOBAL_USAGE_PAGE
USBD_HID_LOCAL_USAGE_MIN
+ 1, USBD_HID_USAGE_PAGE_BUTTON,
+ 1, 0x01,
USBD_HID_LOCAL_USAGE_MAX
USBD_HID_GLOBAL_LOG_MIN
USBD_HID_GLOBAL_LOG_MAX
USBD_HID_GLOBAL_REPORT_COUNT
USBD_HID_GLOBAL_REPORT_SIZE
+
+
+
+
+
1,
1,
1,
1,
1,
0x03,
0x00,
0x01,
0x03,
0x01,
USBD_HID_MAIN_INPUT
+
1,
USBD_HID_MAIN_DATA
|
USBD_HID_MAIN_VARIABLE |
USBD_HID_MAIN_ABSOLUTE,
(8)
USBD_HID_GLOBAL_REPORT_COUNT + 1, 0x01,
USBD_HID_GLOBAL_REPORT_SIZE + 1, 0x0D,
USBD_HID_MAIN_INPUT + 1, USBD_HID_MAIN_CONSTANT,
(9)
USBD_HID_GLOBAL_USAGE_PAGE
USBD_HID_LOCAL_USAGE
USBD_HID_LOCAL_USAGE
USBD_HID_GLOBAL_LOG_MIN
USBD_HID_GLOBAL_LOG_MAX
USBD_HID_GLOBAL_REPORT_SIZE
USBD_HID_GLOBAL_REPORT_COUNT
USBD_HID_MAIN_INPUT
+
+
+
+
+
+
+
+
1,
1,
1,
1,
1,
1,
1,
1,
USBD_HID_USAGE_PAGE_GENERIC_DESKTOP_CONTROLS,
USBD_HID_DV_X,
USBD_HID_DV_Y,
0x81,
0x7F,
0x08,
0x02,
USBD_HID_MAIN_DATA |
USBD_HID_MAIN_VARIABLE |
USBD_HID_MAIN_RELATIVE,
USBD_HID_MAIN_ENDCOLLECTION,
USBD_HID_MAIN_ENDCOLLECTION
(10)
(11)
};
Listing 9-2 Mouse Report Descriptor Example
L9-2(1)
The table representing a mouse Report descriptor is initialized in such way that
each line corresponds to a short item. The latter is formed from a 1-byte prefix
and a 1-byte data. Refer to “Device Class Definition for Human Interface
Devices (HID) Version 1.11”, sections 5.3 and 6.2.2.2 for more details about
short items format. This table content corresponds to the mouse Report
descriptor content viewed by a host HID parser in Figure 9-1.
L9-2(2)
The Generic Desktop Usage Page is used.
148
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