Mixed HID descriptors
Hi,
We are developing an HID multitouch device and we want to make it fully compatible with Linux and Windows.
The device descriptor describes a mouse, keyboard and multitouch digitizer as well as a set of features. When we have mouse or keyboard descriptor along the touch device I can no longer get or set features. It gives me a timeout error:
ioctl (GFEATURE): Connection timed out
This only happens in Linux.
I would like to know if this is normal, or if there is anyway of getting more information about the parsing itself in order to understand the problem.
Below is the device report descriptor
__ALIGN_BEGIN
static uint8_t HID_ReportDesc[]__ALIGN_END =
{
#if 0 // IS MESSING HID ON LINUX
0x05, 0x01, // Usage Page (Generic Desktop)
0x09, 0x06, // Usage (Keyboard)
0xA1, 0x01, // Collection (Application)
0x85, REPORTID_KEYBOARD, // REPORT_ID (Mouse)
0x05, 0x07, // Usage page (Key Codes)
0x19, 0xE0, // Usage minimum (224)
0x29, 0xE7, // Usage maximum (231)
0x15, 0x00, // Logical minimum (0)
0x25, 0x01, // Logical maximum (1)
0x75, 0x01, // Report size (1)
0x95, 0x08, // Report count (8)
0x81, 0x02, // Input (data, variable,
absolute)
0x95, 0x01, // Report count (1)
0x75, 0x08, // Report size (8)
0x81, 0x01, // Input (constant)
0x95, 0x06, // Report count (6)
0x75, 0x08, // Report size (8)
0x15, 0x00, // Logical minimum (0)
0x25, 0x65, // Logical maximum (101)
0x05, 0x07, // Usage page (key codes)
0x19, 0x00, // Usage minimum (0)
0x29, 0x65, // Usage maximum (101)
0x81, 0x00, // Input (data, array)
0xC0,
#endif
#if 0 // IS MESSING HID ON LINUX
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x01, // USAGE (Pointer)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORTID_MOUSE, // REPORT_ID (Mouse)
0x09, 0x01, // USAGE (Pointer)
0xa1, 0x00, // COLLECTION (Physical)
0x05, 0x09, // USAGE_PAGE (Buttons)
0x09, 0x01, // USAGE (Button 1)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x01, // REPORT_SIZE (1)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x01, // LOGICAL_MAXIMUM (1)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x95, 0x07, // REPORT_COUNT (7)
0x75, 0x01, // REPORT_SIZE (1)
0x81, 0x03, // INPUT (Const,Var,Abs)
0x95, 0x08, // REPORT_COUNT (8)
0x75, 0x01, // REPORT_SIZE (1)
0x81, 0x03, // INPUT (Const,Var,Abs)
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767)
0x35, 0x00, // PHYSICAL_MINIMUM (0)
0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0)
0x95, 0x02, // REPORT_COUNT (2)
0x75, 0x10, // REPORT_SIZE (16)
0x81, 0x02, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION
0xa1, 0x02, // COLLECTION (Logical)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x09, 0x01, // USAGE (Pointer)
0x95, 0x39, // REPORT_COUNT (57)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x01, // INPUT (Data,Var,Abs)
0xc0, // END_COLLECTION
0xc0, // END_COLLECTION
#endif
#if 1
0x05, 0x0d, // USAGE_PAGE (Digitizers)
0x09, 0x0E, // USAGE (Configuration)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORTID_MODE, // REPORT_ID (Feature)
0x09, 0x23, // USAGE (Device Settings)
0xa1, 0x02, // COLLECTION (logical)
0x09, 0x52, // USAGE (Device Mode)
0x09, 0x53, // USAGE (Device Index)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x28, // LOGICAL_MAXIMUM (40)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x02, // REPORT_COUNT (2)
0xb1, 0x02, // FEATURE (Data,Var,Abs)
0xc0, // END_COLLECTION
0xc0, // END_COLLECTION
0x09, 0x04, // USAGE (Touch Screen)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORTID_TOUCH, // REPORT_ID (Touch)
0x09, 0x22, // USAGE (Finger)
0x05, 0x0d, /* USAGE_PAGE
(Digitizers) */
0xa1, 0x02, /* COLLECTION
(Logical) */
0x09, 0x42, /* USAGE (Tip
Switch) */
0x15, 0x00, /* LOGICAL_MINIMUM
(0) */
0x25, 0x01, /* LOGICAL_MAXIMUM
(1) */
0x75, 0x01, /* REPORT_SIZE
(1) */
0x95, 0x01, /* REPORT_COUNT
(1) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0x09, 0x32, /* USAGE (In
Range) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0x09, 0x47, /* USAGE
(Confidence) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0x95, 0x05, /* REPORT_COUNT
(5) */
0x81, 0x03, /* INPUT
(Cnst,Ary,Abs) */
0x09, 0x51, /* USAGE (Contact
Identifier) */
0x75, 0x08, /* REPORT_SIZE
(8) */
0x95, 0x01, /* REPORT_COUNT
(1) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0xa1, 0x00, /* COLLECTION
(Physical) */
0x05, 0x01, /* USAGE_PAGE (Generic
Desktop) */
0x15, 0x00, /* LOGICAL_MINIMUM
(0) */
0x26, 0x3A, 0x20, /* LOGICAL_MAXIMUM
(8200) */
0x75, 0x10, /* REPORT_SIZE
(16) */
0x09, 0x30, /* USAGE
(X) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0x15, 0x00, /* LOGICAL_MINIMUM
(0) */
0x26, 0x5C, 0x12, /* LOGICAL_MAXIMUM
(4700) */
0x09, 0x31, /* USAGE
(Y) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0x05, 0x0d, /* USAGE_PAGE
(Digitizers) */
0x09, 0x30, /* USAGE
(X) */
0x75, 0x10, /* REPORT_SIZE
(16) */
0x95, 0x01, /* REPORT_COUNT
(1) */
0x81, 0x02, /* INPUT
(Data,Var,Abs) */
0xc0, /*
END_COLLECTION */
0xc0, /* END_COLLECTION */
0x05, 0x0d, // USAGE_PAGE (Digitizers)
0x09, 0x54, // USAGE (Actual count)
0x15, 0x00, // LOGICAL_MAXIMUM (0)
0x25, 0x14, // LOGICAL_MAXIMUM (20)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0x81, 0x02, // INPUT (Data,Var,Abs) 0x85, REPORTID_MAX_COUNT, // REPORT_ID (Feature)
0x09, 0x55, // USAGE(Maximum Count)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x14, // LOGICAL_MAXIMUM (20)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0xb1, 0x02, // FEATURE (Data,Var,Abs)
0xc0, // END_COLLECTION
#endif
#if 1
0x09, 0x00, // USAGE (Undefined)
0xa1, 0x01, // COLLECTION (Application)
0x85, REPORTID_ENABLE, // REPORT_ID (Feature)
0x09, 0x00, // USAGE(Undefined)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0xb1, 0x02, // FEATURE (Data,Var,Abs)
0x85, REPORTID_GAIN, // REPORT_ID (Feature)
0x09, 0x00, // USAGE(Undefined)
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x25, 0x07, // LOGICAL_MAXIMUM (7)
0x95, 0x01, // REPORT_COUNT (1)
0x75, 0x08, // REPORT_SIZE (8)
0xb1, 0x02, // FEATURE (Data,Var,Abs)
0xc0, // END_COLLECTION
#endif
};With my best regards,
Nuno Santos
www.displax.com
Hi
CC Jiri, Benjamin and Henrik
Quoted 12 lines · Nuno Santos
Hi,
We are developing an HID multitouch device and we want to make it fully compatible with Linux and Windows.
The device descriptor describes a mouse, keyboard and multitouch digitizer as well as a set of features. When we have mouse or keyboard descriptor along the touch device I can no longer get or set features. It gives me a timeout error:
ioctl (GFEATURE): Connection timed out
Quoted 7 lines
This only happens in Linux.
I would like to know if this is normal, or if there is anyway of getting more information about the parsing itself in order to understand the problem.
Below is the device report descriptor
I don't have much time to test it myself, but you can get a lot of debug information via debugfs. Most distros enable it by default. Try looking into /sys/kernel/debug/hid/<dev>/
These debugfs files contain runtime information about HID internals.
Thanks
David
Quoted 214 lines
__ALIGN_BEGIN
staticuint8_tHID_ReportDesc[]__ALIGN_END={ #if 0 // IS MESSING HID ON LINUX 0x05, 0x01, // Usage Page (Generic Desktop) 0x09, 0x06, // Usage (Keyboard) 0xA1, 0x01, // Collection (Application) 0x85, REPORTID_KEYBOARD, // REPORT_ID (Mouse) 0x05, 0x07, // Usage page (Key Codes) 0x19, 0xE0, // Usage minimum (224) 0x29, 0xE7, // Usage maximum (231) 0x15, 0x00, // Logical minimum (0) 0x25, 0x01, // Logical maximum (1) 0x75, 0x01, // Report size (1) 0x95, 0x08, // Report count (8) 0x81, 0x02, // Input (data, variable, absolute) 0x95, 0x01, // Report count (1) 0x75, 0x08, // Report size (8) 0x81, 0x01, // Input (constant) 0x95, 0x06, // Report count (6) 0x75, 0x08, // Report size (8) 0x15, 0x00, // Logical minimum (0) 0x25, 0x65, // Logical maximum (101) 0x05, 0x07, // Usage page (key codes) 0x19, 0x00, // Usage minimum (0) 0x29, 0x65, // Usage maximum (101) 0x81, 0x00, // Input (data, array) 0xC0, #endif #if 0 // IS MESSING HID ON LINUX 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x01, // USAGE (Pointer) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_MOUSE, // REPORT_ID (Mouse) 0x09, 0x01, // USAGE (Pointer) 0xa1, 0x00, // COLLECTION (Physical) 0x05, 0x09, // USAGE_PAGE (Buttons) 0x09, 0x01, // USAGE (Button 1) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x01, // REPORT_SIZE (1) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x01, // LOGICAL_MAXIMUM (1) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x95, 0x07, // REPORT_COUNT (7) 0x75, 0x01, // REPORT_SIZE (1) 0x81, 0x03, // INPUT (Const,Var,Abs) 0x95, 0x08, // REPORT_COUNT (8) 0x75, 0x01, // REPORT_SIZE (1) 0x81, 0x03, // INPUT (Const,Var,Abs) 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x30, // USAGE (X) 0x09, 0x31, // USAGE (Y) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767) 0x35, 0x00, // PHYSICAL_MINIMUM (0) 0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0) 0x95, 0x02, // REPORT_COUNT (2) 0x75, 0x10, // REPORT_SIZE (16) 0x81, 0x02, // INPUT (Data,Var,Abs) 0xc0, // END_COLLECTION 0xa1, 0x02, // COLLECTION (Logical) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255) 0x09, 0x01, // USAGE (Pointer) 0x95, 0x39, // REPORT_COUNT (57) 0x75, 0x08, // REPORT_SIZE (8) 0x81, 0x01, // INPUT (Data,Var,Abs) 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION #endif #if 1 0x05, 0x0d, // USAGE_PAGE (Digitizers) 0x09, 0x0E, // USAGE (Configuration) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_MODE, // REPORT_ID (Feature) 0x09, 0x23, // USAGE (Device Settings) 0xa1, 0x02, // COLLECTION (logical) 0x09, 0x52, // USAGE (Device Mode) 0x09, 0x53, // USAGE (Device Index) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x28, // LOGICAL_MAXIMUM (40) 0x75, 0x08, // REPORT_SIZE (8) 0x95, 0x02, // REPORT_COUNT (2) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION 0x09, 0x04, // USAGE (Touch Screen) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_TOUCH, // REPORT_ID (Touch) 0x09, 0x22, // USAGE (Finger) 0x05, 0x0d, /* USAGE_PAGE (Digitizers) */ 0xa1, 0x02, /* COLLECTION (Logical) */ 0x09, 0x42, /* USAGE (Tip Switch) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ 0x75, 0x01, /* REPORT_SIZE (1) */ 0x95, 0x01, /* REPORT_COUNT (1) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x09, 0x32, /* USAGE (In Range) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x09, 0x47, /* USAGE (Confidence) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x95, 0x05, /* REPORT_COUNT (5) */ 0x81, 0x03, /* INPUT (Cnst,Ary,Abs) */ 0x09, 0x51, /* USAGE (Contact Identifier) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x95, 0x01, /* REPORT_COUNT (1) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0xa1, 0x00, /* COLLECTION (Physical) */ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x26, 0x3A, 0x20, /* LOGICAL_MAXIMUM (8200) */ 0x75, 0x10, /* REPORT_SIZE (16) */ 0x09, 0x30, /* USAGE (X) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x26, 0x5C, 0x12, /* LOGICAL_MAXIMUM (4700) */ 0x09, 0x31, /* USAGE (Y) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x05, 0x0d, /* USAGE_PAGE (Digitizers) */ 0x09, 0x30, /* USAGE (X) */ 0x75, 0x10, /* REPORT_SIZE (16) */ 0x95, 0x01, /* REPORT_COUNT (1) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0xc0, /* END_COLLECTION */ 0xc0, /* END_COLLECTION*/
0x05, 0x0d, // USAGE_PAGE (Digitizers) 0x09, 0x54, // USAGE (Actual count) 0x15, 0x00, // LOGICAL_MAXIMUM (0) 0x25, 0x14, // LOGICAL_MAXIMUM (20) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0x81, 0x02, // INPUT (Data,Var,Abs)0x85, REPORTID_MAX_COUNT, // REPORT_ID (Feature) 0x09, 0x55, // USAGE(Maximum Count) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x14, // LOGICAL_MAXIMUM (20) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0xc0, // END_COLLECTION #endif #if 1 0x09, 0x00, // USAGE (Undefined) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_ENABLE, // REPORT_ID (Feature) 0x09, 0x00, // USAGE(Undefined) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0x85, REPORTID_GAIN, // REPORT_ID (Feature) 0x09, 0x00, // USAGE(Undefined) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x07, // LOGICAL_MAXIMUM (7) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0xc0, // END_COLLECTION #endif };With my best regards,
Nuno Santos
www.displax.com
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Quoted 22 lines · David Herrmann
Hi
CC Jiri, Benjamin and Henrik
Quoted 17 lines · Nuno Santos
Hi,
We are developing an HID multitouch device and we want to make it fully compatible with Linux and Windows.
The device descriptor describes a mouse, keyboard and multitouch digitizer as well as a set of features. When we have mouse or keyboard descriptor along the touch device I can no longer get or set features. It gives me a timeout error:
ioctl (GFEATURE): Connection timed out
This only happens in Linux.
I would like to know if this is normal, or if there is anyway of getting more information about the parsing itself in order to understand the problem.
The only reason I can think of is that the driver at init used to call GET_REPORT on all the input reports, and this is known to be broken on many devices.
I added in v3.12 a quirk which is default for win 8 certified multitouch devices: HID_QUIRK_NO_INIT_INPUT_REPORTS.
If you force your device to use this quirk, the behavior at connect should be the same across all platforms, and hopefully, you will not encounter this error anymore.
If you are running an older kernel, you can try using HID_QUIRK_NO_INIT_REPORTS, but that means that the features will not be called at plug (it all depend if you need to access the values of these features at plug or not).
Cheers,
Benjamin
Quoted 225 lines
Quoted 2 lines
Below is the device report descriptor
I don't have much time to test it myself, but you can get a lot of debug information via debugfs. Most distros enable it by default. Try looking into /sys/kernel/debug/hid/<dev>/
These debugfs files contain runtime information about HID internals.Thanks
DavidQuoted 214 lines
__ALIGN_BEGIN
staticuint8_tHID_ReportDesc[]__ALIGN_END={ #if 0 // IS MESSING HID ON LINUX 0x05, 0x01, // Usage Page (Generic Desktop) 0x09, 0x06, // Usage (Keyboard) 0xA1, 0x01, // Collection (Application) 0x85, REPORTID_KEYBOARD, // REPORT_ID (Mouse) 0x05, 0x07, // Usage page (Key Codes) 0x19, 0xE0, // Usage minimum (224) 0x29, 0xE7, // Usage maximum (231) 0x15, 0x00, // Logical minimum (0) 0x25, 0x01, // Logical maximum (1) 0x75, 0x01, // Report size (1) 0x95, 0x08, // Report count (8) 0x81, 0x02, // Input (data, variable, absolute) 0x95, 0x01, // Report count (1) 0x75, 0x08, // Report size (8) 0x81, 0x01, // Input (constant) 0x95, 0x06, // Report count (6) 0x75, 0x08, // Report size (8) 0x15, 0x00, // Logical minimum (0) 0x25, 0x65, // Logical maximum (101) 0x05, 0x07, // Usage page (key codes) 0x19, 0x00, // Usage minimum (0) 0x29, 0x65, // Usage maximum (101) 0x81, 0x00, // Input (data, array) 0xC0, #endif #if 0 // IS MESSING HID ON LINUX 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x01, // USAGE (Pointer) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_MOUSE, // REPORT_ID (Mouse) 0x09, 0x01, // USAGE (Pointer) 0xa1, 0x00, // COLLECTION (Physical) 0x05, 0x09, // USAGE_PAGE (Buttons) 0x09, 0x01, // USAGE (Button 1) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x01, // REPORT_SIZE (1) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x01, // LOGICAL_MAXIMUM (1) 0x81, 0x02, // INPUT (Data,Var,Abs) 0x95, 0x07, // REPORT_COUNT (7) 0x75, 0x01, // REPORT_SIZE (1) 0x81, 0x03, // INPUT (Const,Var,Abs) 0x95, 0x08, // REPORT_COUNT (8) 0x75, 0x01, // REPORT_SIZE (1) 0x81, 0x03, // INPUT (Const,Var,Abs) 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x30, // USAGE (X) 0x09, 0x31, // USAGE (Y) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x26, 0xff, 0x7f, // LOGICAL_MAXIMUM (32767) 0x35, 0x00, // PHYSICAL_MINIMUM (0) 0x46, 0x00, 0x00, // PHYSICAL_MAXIMUM (0) 0x95, 0x02, // REPORT_COUNT (2) 0x75, 0x10, // REPORT_SIZE (16) 0x81, 0x02, // INPUT (Data,Var,Abs) 0xc0, // END_COLLECTION 0xa1, 0x02, // COLLECTION (Logical) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255) 0x09, 0x01, // USAGE (Pointer) 0x95, 0x39, // REPORT_COUNT (57) 0x75, 0x08, // REPORT_SIZE (8) 0x81, 0x01, // INPUT (Data,Var,Abs) 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION #endif #if 1 0x05, 0x0d, // USAGE_PAGE (Digitizers) 0x09, 0x0E, // USAGE (Configuration) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_MODE, // REPORT_ID (Feature) 0x09, 0x23, // USAGE (Device Settings) 0xa1, 0x02, // COLLECTION (logical) 0x09, 0x52, // USAGE (Device Mode) 0x09, 0x53, // USAGE (Device Index) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x28, // LOGICAL_MAXIMUM (40) 0x75, 0x08, // REPORT_SIZE (8) 0x95, 0x02, // REPORT_COUNT (2) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0xc0, // END_COLLECTION 0xc0, // END_COLLECTION 0x09, 0x04, // USAGE (Touch Screen) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_TOUCH, // REPORT_ID (Touch) 0x09, 0x22, // USAGE (Finger) 0x05, 0x0d, /* USAGE_PAGE (Digitizers) */ 0xa1, 0x02, /* COLLECTION (Logical) */ 0x09, 0x42, /* USAGE (Tip Switch) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x25, 0x01, /* LOGICAL_MAXIMUM (1) */ 0x75, 0x01, /* REPORT_SIZE (1) */ 0x95, 0x01, /* REPORT_COUNT (1) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x09, 0x32, /* USAGE (In Range) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x09, 0x47, /* USAGE (Confidence) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x95, 0x05, /* REPORT_COUNT (5) */ 0x81, 0x03, /* INPUT (Cnst,Ary,Abs) */ 0x09, 0x51, /* USAGE (Contact Identifier) */ 0x75, 0x08, /* REPORT_SIZE (8) */ 0x95, 0x01, /* REPORT_COUNT (1) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0xa1, 0x00, /* COLLECTION (Physical) */ 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x26, 0x3A, 0x20, /* LOGICAL_MAXIMUM (8200) */ 0x75, 0x10, /* REPORT_SIZE (16) */ 0x09, 0x30, /* USAGE (X) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x15, 0x00, /* LOGICAL_MINIMUM (0) */ 0x26, 0x5C, 0x12, /* LOGICAL_MAXIMUM (4700) */ 0x09, 0x31, /* USAGE (Y) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0x05, 0x0d, /* USAGE_PAGE (Digitizers) */ 0x09, 0x30, /* USAGE (X) */ 0x75, 0x10, /* REPORT_SIZE (16) */ 0x95, 0x01, /* REPORT_COUNT (1) */ 0x81, 0x02, /* INPUT (Data,Var,Abs) */ 0xc0, /* END_COLLECTION */ 0xc0, /* END_COLLECTION*/
0x05, 0x0d, // USAGE_PAGE (Digitizers) 0x09, 0x54, // USAGE (Actual count) 0x15, 0x00, // LOGICAL_MAXIMUM (0) 0x25, 0x14, // LOGICAL_MAXIMUM (20) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0x81, 0x02, // INPUT (Data,Var,Abs)0x85, REPORTID_MAX_COUNT, // REPORT_ID (Feature) 0x09, 0x55, // USAGE(Maximum Count) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x14, // LOGICAL_MAXIMUM (20) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0xc0, // END_COLLECTION #endif #if 1 0x09, 0x00, // USAGE (Undefined) 0xa1, 0x01, // COLLECTION (Application) 0x85, REPORTID_ENABLE, // REPORT_ID (Feature) 0x09, 0x00, // USAGE(Undefined) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0x85, REPORTID_GAIN, // REPORT_ID (Feature) 0x09, 0x00, // USAGE(Undefined) 0x15, 0x00, // LOGICAL_MINIMUM (0) 0x25, 0x07, // LOGICAL_MAXIMUM (7) 0x95, 0x01, // REPORT_COUNT (1) 0x75, 0x08, // REPORT_SIZE (8) 0xb1, 0x02, // FEATURE (Data,Var,Abs) 0xc0, // END_COLLECTION #endif };With my best regards,
Nuno Santos
www.displax.com
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