Hi
CC Jiri, Benjamin and Henrik
On Thu, Feb 20, 2014 at 12:12 PM, Nuno Santos <nsantos@xxxxxxxxxxx> wrote:
> 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
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
> __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
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