USB觸摸屏HID描述符（用於2個聯系人標識符）
[英]USB touch screen HID descriptor for 2 contact identifier
問題描述
目前，我正在STM32f4板上開發USB觸摸屏HID描述符（自定義HID描述符）。 為此，我為單個聯系人標識符（單指觸摸）實現了HID描述符，並且對我有用。但是，我的要求是使用多點觸摸手指。 因此，我正在將我的單指HID修改為多指HID。在這種情況下，我為第二指添加了一些報告。
這是我的2個手指的報告描述符...
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
在分析儀中，我將變成這樣.. 在此處輸入圖像描述
在分析中，即使我發送了不同的數據，它也顯示了與手指1,2相同的數據。
在這里，我附上我如何發送數據..
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);
在這種情況下，我什至無法獲得單點觸摸。但是，如果我禁用了手指2的筆尖開關，那么手指1的觸摸就會起作用。
但是，如果我禁用了手指1的指尖開關，並啟用了手指2的指尖開關，那么即使我也沒有得到單觸。
所以，請幫助我我哪里做錯了。
我不知道問題是由於報表描述符還是其他原因引起的。
謝謝
1 個解決方案
解決方案1
0 2018-07-05 22:32:09
報告描述符在某些方面不太正確，這可能會使主機HID解析器混亂（或在主機操作系統之間引起不同的行為），因此，我建議首先解決這些問題，包括：
- 空的功能報告定義（這可能是真正的問題）
- 未指定邏輯最小值
- 報告大小太小，無法容納邏輯最大值
- 在定義后續字段之前忘記重置物理單位（您可以為此使用PUSH和POP）
就目前而言，報告描述符將被解析為：
//--------------------------------------------------------------------------------
// 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;
這是另一個多點觸控報告描述符（使用報告ID），可能值得嘗試：
//--------------------------------------------------------------------------------
// 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;
符合 HID 的觸摸屏數據包數據結構
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