c - 用于 2 个联系人标识符的 USB 触摸屏 HID 描述符-6ren

c - 用于 2 个联系人标识符的 USB 触摸屏 HID 描述符

转载作者：行者123 更新时间：2023-11-30 16:30:23

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(单手指触摸)实现了一个 HID 描述符，它对我有用。但是，我的要求是多点触摸手指。因此，我正在将我的单点触摸 HID 修改为多点触摸 HID。在这种情况下，我为第二个手指添加了一些报告。

这是我的 2 根手指的报告描述符...


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 Windows 10 touch lapy 中对此进行测试，其中我有 USBlyzer 来分析从板发送到 PC 的数据。

在分析仪中我得到这样的.. enter image description here

在分析中，尽管我发送了不同的数据，但它显示了手指 1,2 的相同数据。

这里我附上我如何发送数据..


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，我什至没有得到单点触摸。但是，如果我禁用手指 2 中的 Nib 开关，那么手指 1 触摸就可以工作。

但是，如果我禁用手指 1 尖端开关，并启用手指 2 尖端开关，那么即使我也无法进行单点触摸。

所以，请帮助我哪里出错了。

我不知道问题是由于报告描述符还是其他原因造成的..

谢谢

最佳答案

报告描述符有很多不太正确的地方，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:

空的功能报告定义(这可能是真正的问题)
未指定逻辑最小值
报告大小太小，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位(您可以为此使用 PUSH 和 POP)

现有的报告描述符将被解析为:

//--------------------------------------------------------------------------------
// 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;

这是另一个多点触摸报告描述符(使用报告 ID)，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;

关于c - 用于 2 个联系人标识符的 USB 触摸屏 HID 描述符，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51191660/

文章推荐： c - pjsip 2.5本地sdp端口错误

文章推荐： javascript - 基于javascript中的另一个数组过滤数组

文章推荐： javascript - 最简单的递归函数返回 undefined

C++ 标识符
C++ Primer 说: The identifier we define in our programs may not contain 2 consecutive underscores, no
raku - (标识符)术语与常量与空签名例程
标识符术语在文档 alongside constants 中定义。 , 使用几乎相同的用例，尽管术语在运行时计算它们的值，而常量在编译时得到它。潜在地，这可能会使术语使用全局变量，但这是一个遥远而丑陋
.Net/CLR 标识符
我想知道，.Net 标识符中接受哪些字符？不是 C# 或 VB.Net，而是 CLR。我问这个的原因是我正在查看 yield return 语句是如何实现的 (C# In Depth)，并看到
powershell - 如何获取对象类型/标识符？
在PowerShell中，当我专门使用Active Directory时，通常会编译一个包含一组人群列表的对象，通常使用$x = get-adgroup -filter {name -like "*"
java - hibernate :标识符
使用 hibernate 时: 我必须为每个实体指定一个 ID 或复合 ID，如果我想使用没有任何主键且没有复合键的表怎么办... 提前致谢最佳答案没有键的表不是一个好的关系模型。我不会推荐它。
java - <标识符> 预期错误
所以我有一些代码正在尝试编译，但我不断收到此错误: 3SATSolver.java:3: expected 这是代码。我只是没有看到什么吗？ import java.util.ArrayList;
C 标准一致性 - 标识符
我正在寻找有关 C 标准(C99 和/或 C11)部分内容的一些说明，主要是关于标识符的使用。上下文是一个完整的C99标准库的实现，我希望它完全符合标准。基本问题是:C 标准允许我在多大程度上声明
c++ - 标识符 "in"未定义
我有这个 Shader.h 文件，我正在用这段代码制作它: #include #include #include #include in vec2 TexCoords; out vec4 co
c++ - 标识符 "do"未定义
很难说出这里要问什么。这个问题模棱两可、含糊不清、不完整、过于宽泛或夸夸其谈，无法以目前的形式得到合理的回答。如需帮助澄清此问题以便重新打开，visit the help center . 关闭 1
编译源代码时找不到 C++ 标识符
这是我的代码: #include "stdafx.h" #include #include #include #include using namespace std; int _tmain(
c - pthread_create 标识符
pthread_create() 的第一个参数是一个thread 对象，用于标识新创建的线程。但是，我不确定我是否完全理解其中的含义。例如，我正在编写一个简单的聊天服务器并且我计划使用线程。线程会随
php - Preg_match 标识符
我想从我的标识符中获得匹配项。我在 {/describe:foo} 中有一个这样的字符串，我正在尝试匹配 {/describe:} 以返回 foo，但我没有得到正确的正则表达式，会有人介意指出我做错
在抽象类中找不到 C++ 标识符
我遇到了一个奇怪的问题，我似乎找不到答案，但我想我不妨问问。我有一个执行碰撞检查的抽象类，它有一个“更新”函数，以及“updateX”和“updateY”函数。 class MapCollidabl
预期的 c# 标识符？
我正在尝试创建一个程序来将所有文件从一个目录复制到另一个目录。但我遇到了一个基本问题。它说当我尝试在第 52 行编译时需要标识符。 public bool RecursiveCopy() {
C2061 语法错误(标识符)
1>cb.c(51): error C2061: syntax error : identifier 'SaveConfiguration' 1>cb.c(51): error C2059: synt
不使用的 JavaScript 标识符
我刚刚发现命名变量 arguments 是个坏主意。 var arguments = 5; (function () { console.log(arguments); })(); Outpu
.net - 终止服务器上的 session 标识符
我们对我们的网站进行了安全测试，并发现了一个漏洞。问题 If the session identifier were known by an attacker who had access to t
CUDA:标识符 "cudaMemGetInfo"未定义
为了估计程序在一次内核启动中可以处理多少数据，我尝试使用 cudaMemGetInfo() 获取一些内存信息。但是，编译器告诉我: 错误:标识符“cudaMemGetInfo”未定义 cudaGetD
php - 使用不准确的字符串作为 xpath 标识符
我发现我需要使用 xpath 查询来定位几乎是 regexp 类型的字符串，但无法看到如何管理它。我正在使用的当前查询是: $result = $xpath->query('//ul/li[sta
delphi - 加载动态 .ini 标识符
我正在创建我的学生计划表的虚拟版本，它基本上可以让你记下你有哪些科目的作业。这是界面: 用户从组合框中选择主题，并在相邻的备忘录中输入一些注释。完成后，他们将单击“保存”按钮，将其保存到 .ini

行者123

个人简介

我是一名优秀的程序员,十分优秀！

作者热门文章

滴滴打车优惠券免费领取

全站热门文章

首页

博学

6Ren·AI

商城

c - 用于 2 个联系人标识符的 USB 触摸屏 HID 描述符