用于2个联系人标识符的USB触摸屏HID描述符
用于2个联系人标识符的USB触摸屏HID描述符
提问于 2018-07-05 12:45:00
目前我正在STM32f4板上开发USB触摸屏HID描述符(自定义HID描述符)。为此，我为单个联系人标识符(单指触摸)实现了一个HID描述符，它适用于me.But，我的要求是多点触摸手指。所以，我正在修改我的单一触摸手指隐藏为多点触摸HID.In这个案例，我增加了一些报告为食指。
这是我两个手指的报告描述符..。
0x05, 0x0D, // Usage Page (Digitizer)
0x09, 0x04, // Usage (Touch Screen)
0xA1, 0x01, // Collection (Application)
0x09, 0x55, // Usage (0x55)
0x25, 0x03, // Logical Maximum (3)
0xB1, 0x02, // Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
0x09, 0x54, // Usage (0x54)
0x95, 0x01, // Report Count (1)
0x75, 0x08, // Report Size (8)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x09, 0x22, // Usage (Finger)
0xA1, 0x02, // Collection (Logical)
0x09, 0x51, // Usage (0x51)
0x75, 0x08, // Report Size (8)
0x95, 0x01, // Report Count (1)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x09, 0x42, // Usage (Tip Switch)
0x09, 0x32, // Usage (In Range)
0x15, 0x00, // Logical Minimum (0)
0x25, 0x01, // Logical Maximum (1)
0x75, 0x01, // Report Size (1)
0x95, 0x02, // Report Count (2)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x95, 0x06, // Report Count (6)
0x81, 0x03, // Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
0x09, 0x30, // Usage (X)
0x09, 0x31, // Usage (Y)
0x16, 0x00, 0x00, // Logical Minimum (0)
0x26, 0x10, 0x27, // Logical Maximum (10000)
0x36, 0x00, 0x00, // Physical Minimum (0)
0x46, 0x10, 0x27, // Physical Maximum (10000)
0x66, 0x00, 0x00, // Unit (None)
0x75, 0x10, // Report Size (16)
0x95, 0x02, // Report Count (2)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0, // End Collection
0x05, 0x0D, // Usage Page (Digitizer)
0x09, 0x22, // Usage (Finger)
0xA1, 0x02, // Collection (Logical)
0x05, 0x0D, // Usage Page (Digitizer)
0x09, 0x51, // Usage (0x51)
0x75, 0x08, // Report Size (8)
0x95, 0x01, // Report Count (1)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x09, 0x42, // Usage (Tip Switch)
0x09, 0x32, // Usage (In Range)
0x15, 0x00, // Logical Minimum (0)
0x25, 0x01, // Logical Maximum (1)
0x75, 0x01, // Report Size (1)
0x95, 0x02, // Report Count (2)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x95, 0x06, // Report Count (6)
0x81, 0x03, // Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0x05, 0x01, // Usage Page (Generic Desktop Ctrls)
0x09, 0x30, // Usage (X)
0x09, 0x31, // Usage (Y)
0x16, 0x00, 0x00, // Logical Minimum (0)
0x26, 0x10, 0x27, // Logical Maximum (10000)
0x66, 0x00, 0x00, // Unit (None)
0x75, 0x10, // Report Size (16)
0x95, 0x02, // Report Count (2)
0x81, 0x02, // Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
0xC0, // End Collection
0xC0, // End Collection我正在测试这在windows 10触摸失误，在那里我有USBlyzer分析数据从板卡发送到PC。
在分析器里我会变成这样..。在这里输入图像描述
在分析中，它显示了手指1,2的相同数据，尽管我发送的数据不同。
在这里，我附加了发送数据的方式。
my_buff[0] = 0x02;//contact count
my_buff[1] = 0x01;//contact identifier(finger1)
my_buff[2] = 0x03;//tip switch and in range
my_buff[3] = 0x88;//x axis lsb
my_buff[4] = 0x13;//x axis msb
my_buff[5] = 0x88;//y axis lsb
my_buff[6] = 0x13;//y axis msb
my_buff[7] = 0x02;//contact identifier(finger2)
my_buff[8] = 0x03;//tip switch and in range
my_buff[9] = 0x70;//x axis lsb
my_buff[10]= 0x12;//x axis msb
my_buff[11] = 0x70;//y axis lsb
my_buff[12] = 0x12;//y axis msb
USBD_HID_SendReport (&USB_OTG_dev,
my_buff,
13);
在这种情况下，我甚至没有得到单一的touch.But，如果我在手指2禁用提示开关，那么手指1触摸是有效的。
但如果我禁用手指1提示开关，并启用手指2提示开关，那么我甚至不会得到一次触摸。
所以，请帮我找错地方。
我不知道问题是因为报告描述符还是其他原因。
谢谢
回答 1
Stack Overflow用户
发布于 2018-07-05 22:32:09
报告描述符有一些不太正确的地方，可能会混淆主机HID解析器(或导致主机操作系统之间的不同行为)，因此我建议首先修复这些问题，包括：
- 一个空的特性报告定义(这可能是真正的问题)
- 逻辑最小值未指定
- 报表大小太小，无法容纳逻辑最大值
- 在定义后续字段之前忘记重置物理单元(为此可以使用PUSH和POP )
当前的报表描述符将被解析为：
//--------------------------------------------------------------------------------
// Decoded Application Collection
//--------------------------------------------------------------------------------
/*
05 0D (GLOBAL) USAGE_PAGE 0x000D Digitizer Device Page
09 04 (LOCAL) USAGE 0x000D0004 Touch Screen (Application Collection)
A1 01 (MAIN) COLLECTION 0x01 Application (Usage=0x000D0004: Page=Digitizer Device Page, Usage=Touch Screen, Type=Application Collection)
09 55 (LOCAL) USAGE 0x000D0055 Contact Count Maximum (Static Value)
25 03 (GLOBAL) LOGICAL_MAXIMUM 0x03 (3)
B1 02 (MAIN) FEATURE 0x00000002 ( fields x bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap <-- Error: REPORT_SIZE is undefined <-- Error: REPORT_COUNT is undefined <-- Error: LOGICAL_MINIMUM is undefined
09 54 (LOCAL) USAGE 0x000D0054 Contact Count (Dynamic Value)
95 01 (GLOBAL) REPORT_COUNT 0x01 (1) Number of fields
75 08 (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field
81 02 (MAIN) INPUT 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap <-- Error: LOGICAL_MINIMUM is undefined
09 22 (LOCAL) USAGE 0x000D0022 Finger (Logical Collection)
A1 02 (MAIN) COLLECTION 0x02 Logical (Usage=0x000D0022: Page=Digitizer Device Page, Usage=Finger, Type=Logical Collection)
09 51 (LOCAL) USAGE 0x000D0051 Contact Identifier (Dynamic Value)
75 08 (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field <-- Redundant: REPORT_SIZE is already 8
95 01 (GLOBAL) REPORT_COUNT 0x01 (1) Number of fields <-- Redundant: REPORT_COUNT is already 1
81 02 (MAIN) INPUT 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap <-- Error: LOGICAL_MINIMUM is undefined
09 42 (LOCAL) USAGE 0x000D0042 Tip Switch (Momentary Control)
09 32 (LOCAL) USAGE 0x000D0032 In Range (Momentary Control)
15 00 (GLOBAL) LOGICAL_MINIMUM 0x00 (0) <-- Info: Consider replacing 15 00 with 14
25 01 (GLOBAL) LOGICAL_MAXIMUM 0x01 (1)
75 01 (GLOBAL) REPORT_SIZE 0x01 (1) Number of bits per field
95 02 (GLOBAL) REPORT_COUNT 0x02 (2) Number of fields
81 02 (MAIN) INPUT 0x00000002 (2 fields x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
95 06 (GLOBAL) REPORT_COUNT 0x06 (6) Number of fields
81 03 (MAIN) INPUT 0x00000003 (6 fields x 1 bit) 1=Constant 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
05 01 (GLOBAL) USAGE_PAGE 0x0001 Generic Desktop Page
09 30 (LOCAL) USAGE 0x00010030 X (Dynamic Value)
09 31 (LOCAL) USAGE 0x00010031 Y (Dynamic Value)
16 0000 (GLOBAL) LOGICAL_MINIMUM 0x0000 (0) <-- Redundant: LOGICAL_MINIMUM is already 0 <-- Info: Consider replacing 16 0000 with 14
26 1027 (GLOBAL) LOGICAL_MAXIMUM 0x2710 (10000)
36 0000 (GLOBAL) PHYSICAL_MINIMUM 0x0000 (0) <-- Info: Consider replacing 36 0000 with 34
46 1027 (GLOBAL) PHYSICAL_MAXIMUM 0x2710 (10000)
66 0000 (GLOBAL) UNIT 0x0000 No unit (0=None) <-- Redundant: UNIT is already 0x00000000 <-- Info: Consider replacing 66 0000 with 64
75 10 (GLOBAL) REPORT_SIZE 0x10 (16) Number of bits per field
95 02 (GLOBAL) REPORT_COUNT 0x02 (2) Number of fields
81 02 (MAIN) INPUT 0x00000002 (2 fields x 16 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
C0 (MAIN) END_COLLECTION Logical <-- Warning: Physical units are still in effect PHYSICAL(MIN=0,MAX=10000) UNIT(0x,EXP=0)
05 0D (GLOBAL) USAGE_PAGE 0x000D Digitizer Device Page
09 22 (LOCAL) USAGE 0x000D0022 Finger (Logical Collection)
A1 02 (MAIN) COLLECTION 0x02 Logical (Usage=0x000D0022: Page=Digitizer Device Page, Usage=Finger, Type=Logical Collection)
05 0D (GLOBAL) USAGE_PAGE 0x000D Digitizer Device Page <-- Redundant: USAGE_PAGE is already 0x000D
09 51 (LOCAL) USAGE 0x000D0051 Contact Identifier (Dynamic Value)
75 08 (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field
95 01 (GLOBAL) REPORT_COUNT 0x01 (1) Number of fields
81 02 (MAIN) INPUT 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap <-- Error: REPORT_SIZE (8) is too small for LOGICAL_MAXIMUM (10000) which needs 14 bits.
09 42 (LOCAL) USAGE 0x000D0042 Tip Switch (Momentary Control)
09 32 (LOCAL) USAGE 0x000D0032 In Range (Momentary Control)
15 00 (GLOBAL) LOGICAL_MINIMUM 0x00 (0) <-- Redundant: LOGICAL_MINIMUM is already 0 <-- Info: Consider replacing 15 00 with 14
25 01 (GLOBAL) LOGICAL_MAXIMUM 0x01 (1)
75 01 (GLOBAL) REPORT_SIZE 0x01 (1) Number of bits per field
95 02 (GLOBAL) REPORT_COUNT 0x02 (2) Number of fields
81 02 (MAIN) INPUT 0x00000002 (2 fields x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
95 06 (GLOBAL) REPORT_COUNT 0x06 (6) Number of fields
81 03 (MAIN) INPUT 0x00000003 (6 fields x 1 bit) 1=Constant 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
05 01 (GLOBAL) USAGE_PAGE 0x0001 Generic Desktop Page
09 30 (LOCAL) USAGE 0x00010030 X (Dynamic Value)
09 31 (LOCAL) USAGE 0x00010031 Y (Dynamic Value)
16 0000 (GLOBAL) LOGICAL_MINIMUM 0x0000 (0) <-- Redundant: LOGICAL_MINIMUM is already 0 <-- Info: Consider replacing 16 0000 with 14
26 1027 (GLOBAL) LOGICAL_MAXIMUM 0x2710 (10000)
66 0000 (GLOBAL) UNIT 0x0000 No unit (0=None) <-- Redundant: UNIT is already 0x00000000 <-- Info: Consider replacing 66 0000 with 64
75 10 (GLOBAL) REPORT_SIZE 0x10 (16) Number of bits per field
95 02 (GLOBAL) REPORT_COUNT 0x02 (2) Number of fields
81 02 (MAIN) INPUT 0x00000002 (2 fields x 16 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
C0 (MAIN) END_COLLECTION Logical <-- Warning: Physical units are still in effect PHYSICAL(MIN=0,MAX=10000) UNIT(0x,EXP=0)
C0 (MAIN) END_COLLECTION Application <-- Warning: Physical units are still in effect PHYSICAL(MIN=0,MAX=10000) UNIT(0x,EXP=0)
*/
//--------------------------------------------------------------------------------
// Digitizer Device Page featureReport (Device <-> Host)
//--------------------------------------------------------------------------------
typedef struct
{
// No REPORT ID byte
// Collection: TouchScreen
// Usage 0x000D0055 Contact Count Maximum, Value = to 3 <-- Ignored: REPORT_COUNT () is too small
} featureReport_t;
//--------------------------------------------------------------------------------
// Digitizer Device Page inputReport (Device --> Host)
//--------------------------------------------------------------------------------
typedef struct
{
// No REPORT ID byte
// Collection: TouchScreen
int8_t DIG_TouchScreenContactCount; // Usage 0x000D0054: Contact Count, Value = to 3
// Collection: TouchScreen Finger
int8_t DIG_TouchScreenFingerContactIdentifier; // Usage 0x000D0051: Contact Identifier, Value = to 3
uint8_t DIG_TouchScreenFingerTipSwitch : 1; // Usage 0x000D0042: Tip Switch, Value = 0 to 1
uint8_t DIG_TouchScreenFingerInRange : 1; // Usage 0x000D0032: In Range, Value = 0 to 1
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint16_t GD_TouchScreenFingerX; // Usage 0x00010030: X, Value = 0 to 10000, Physical = Value
uint16_t GD_TouchScreenFingerY; // Usage 0x00010031: Y, Value = 0 to 10000, Physical = Value
uint8_t DIG_TouchScreenFingerContactIdentifier_1; // Usage 0x000D0051: Contact Identifier, Value = 0 to 10000, Physical = Value
uint8_t DIG_TouchScreenFingerTipSwitch_1 : 1; // Usage 0x000D0042: Tip Switch, Value = 0 to 1, Physical = Value x 10000
uint8_t DIG_TouchScreenFingerInRange_1 : 1; // Usage 0x000D0032: In Range, Value = 0 to 1, Physical = Value x 10000
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint16_t GD_TouchScreenFingerX_1; // Usage 0x00010030: X, Value = 0 to 10000, Physical = Value
uint16_t GD_TouchScreenFingerY_1; // Usage 0x00010031: Y, Value = 0 to 10000, Physical = Value
} inputReport_t;下面是另一个多点触摸报表描述符(使用报表ids)，可能值得尝试：
//--------------------------------------------------------------------------------
// Decoded Application Collection
//--------------------------------------------------------------------------------
/*
05 0D (GLOBAL) USAGE_PAGE 0x000D Digitizer Device Page
09 04 (LOCAL) USAGE 0x000D0004 Touch Screen (Application Collection)
A1 01 (MAIN) COLLECTION 0x01 Application (Usage=0x000D0004: Page=Digitizer Device Page, Usage=Touch Screen, Type=Application Collection)
85 54 (GLOBAL) REPORT_ID 0x54 (84) 'T'
09 22 (LOCAL) USAGE 0x000D0022 Finger (Logical Collection)
A1 02 (MAIN) COLLECTION 0x02 Logical (Usage=0x000D0022: Page=Digitizer Device Page, Usage=Finger, Type=Logical Collection)
09 42 (LOCAL) USAGE 0x000D0042 Tip Switch (Momentary Control)
14 (GLOBAL) LOGICAL_MINIMUM (0)
25 01 (GLOBAL) LOGICAL_MAXIMUM 0x01 (1)
75 01 (GLOBAL) REPORT_SIZE 0x01 (1) Number of bits per field
95 01 (GLOBAL) REPORT_COUNT 0x01 (1) Number of fields
81 02 (MAIN) INPUT 0x00000002 (1 field x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 32 (LOCAL) USAGE 0x000D0032 In Range (Momentary Control)
81 02 (MAIN) INPUT 0x00000002 (1 field x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 47 (LOCAL) USAGE 0x000D0047 Confidence (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
95 05 (GLOBAL) REPORT_COUNT 0x05 (5) Number of fields
81 03 (MAIN) INPUT 0x00000003 (5 fields x 1 bit) 1=Constant 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
75 08 (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field
09 51 (LOCAL) USAGE 0x000D0051 Contact Identifier (Dynamic Value)
95 01 (GLOBAL) REPORT_COUNT 0x01 (1) Number of fields
81 02 (MAIN) INPUT 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
05 01 (GLOBAL) USAGE_PAGE 0x0001 Generic Desktop Page
26 FF7F (GLOBAL) LOGICAL_MAXIMUM 0x7FFF (32767)
75 10 (GLOBAL) REPORT_SIZE 0x10 (16) Number of bits per field
09 30 (LOCAL) USAGE 0x00010030 X (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 16 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 31 (LOCAL) USAGE 0x00010031 Y (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 16 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
C0 (MAIN) END_COLLECTION Logical
05 0D (GLOBAL) USAGE_PAGE 0x000D Digitizer Device Page
09 22 (LOCAL) USAGE 0x000D0022 Finger (Logical Collection)
A1 02 (MAIN) COLLECTION 0x02 Logical (Usage=0x000D0022: Page=Digitizer Device Page, Usage=Finger, Type=Logical Collection)
09 42 (LOCAL) USAGE 0x000D0042 Tip Switch (Momentary Control)
25 01 (GLOBAL) LOGICAL_MAXIMUM 0x01 (1)
75 01 (GLOBAL) REPORT_SIZE 0x01 (1) Number of bits per field
81 02 (MAIN) INPUT 0x00000002 (1 field x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 32 (LOCAL) USAGE 0x000D0032 In Range (Momentary Control)
81 02 (MAIN) INPUT 0x00000002 (1 field x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 47 (LOCAL) USAGE 0x000D0047 Confidence (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 1 bit) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
95 05 (GLOBAL) REPORT_COUNT 0x05 (5) Number of fields
81 03 (MAIN) INPUT 0x00000003 (5 fields x 1 bit) 1=Constant 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
75 08 (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field
95 01 (GLOBAL) REPORT_COUNT 0x01 (1) Number of fields
09 51 (LOCAL) USAGE 0x000D0051 Contact Identifier (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
05 01 (GLOBAL) USAGE_PAGE 0x0001 Generic Desktop Page
26 FF7F (GLOBAL) LOGICAL_MAXIMUM 0x7FFF (32767)
75 10 (GLOBAL) REPORT_SIZE 0x10 (16) Number of bits per field
09 30 (LOCAL) USAGE 0x00010030 X (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 16 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 31 (LOCAL) USAGE 0x00010031 Y (Dynamic Value)
81 02 (MAIN) INPUT 0x00000002 (1 field x 16 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
C0 (MAIN) END_COLLECTION Logical
05 0D (GLOBAL) USAGE_PAGE 0x000D Digitizer Device Page
09 54 (LOCAL) USAGE 0x000D0054 Contact Count (Dynamic Value)
75 08 (GLOBAL) REPORT_SIZE 0x08 (8) Number of bits per field
25 08 (GLOBAL) LOGICAL_MAXIMUM 0x08 (8)
81 02 (MAIN) INPUT 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
09 55 (LOCAL) USAGE 0x000D0055 Contact Count Maximum (Static Value)
B1 02 (MAIN) FEATURE 0x00000002 (1 field x 8 bits) 0=Data 1=Variable 0=Absolute 0=NoWrap 0=Linear 0=PrefState 0=NoNull 0=NonVolatile 0=Bitmap
C0 (MAIN) END_COLLECTION Application
*/
//--------------------------------------------------------------------------------
// Digitizer Device Page featureReport 54 (Device <-> Host)
//--------------------------------------------------------------------------------
typedef struct
{
uint8_t reportId; // Report ID = 0x54 (84) 'T'
// Collection: TouchScreen
uint8_t DIG_TouchScreenContactCountMaximum; // Usage 0x000D0055: Contact Count Maximum, Value = 0 to 8
} featureReport54_t;
//--------------------------------------------------------------------------------
// Digitizer Device Page inputReport 54 (Device --> Host)
//--------------------------------------------------------------------------------
typedef struct
{
uint8_t reportId; // Report ID = 0x54 (84) 'T'
// Collection: TouchScreen Finger
uint8_t DIG_TouchScreenFingerTipSwitch : 1; // Usage 0x000D0042: Tip Switch, Value = 0 to 1
uint8_t DIG_TouchScreenFingerInRange : 1; // Usage 0x000D0032: In Range, Value = 0 to 1
uint8_t DIG_TouchScreenFingerConfidence : 1; // Usage 0x000D0047: Confidence, Value = 0 to 1
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t DIG_TouchScreenFingerContactIdentifier; // Usage 0x000D0051: Contact Identifier, Value = 0 to 1
uint16_t GD_TouchScreenFingerX; // Usage 0x00010030: X, Value = 0 to 32767
uint16_t GD_TouchScreenFingerY; // Usage 0x00010031: Y, Value = 0 to 32767
uint8_t DIG_TouchScreenFingerTipSwitch_1 : 1; // Usage 0x000D0042: Tip Switch, Value = 0 to 1
uint8_t DIG_TouchScreenFingerInRange_1 : 1; // Usage 0x000D0032: In Range, Value = 0 to 1
uint8_t DIG_TouchScreenFingerConfidence_1 : 1; // Usage 0x000D0047: Confidence, Value = 0 to 1
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t : 1; // Pad
uint8_t DIG_TouchScreenFingerContactIdentifier_1; // Usage 0x000D0051: Contact Identifier, Value = 0 to 1
uint16_t GD_TouchScreenFingerX_1; // Usage 0x00010030: X, Value = 0 to 32767
uint16_t GD_TouchScreenFingerY_1; // Usage 0x00010031: Y, Value = 0 to 32767
// Collection: TouchScreen
uint8_t DIG_TouchScreenContactCount; // Usage 0x000D0054: Contact Count, Value = 0 to 8
} inputReport54_t;页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51191660
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