* HID-Multitouch: eGalax Touchscreen Pressure
@ 2011-11-19 7:00 Cedric Sodhi
2011-11-20 11:30 ` Benjamin Tissoires
0 siblings, 1 reply; 2+ messages in thread
From: Cedric Sodhi @ 2011-11-19 7:00 UTC (permalink / raw)
To: linux-input
[-- Attachment #1: Type: text/plain, Size: 520 bytes --]
Hello everybody
After I finally got the touchscreen to work thanks to Benjamin, there
remains one little issue for the eGalax 0eef:a001
I'm pretty sure one could measure the pressure by which the finger(s)
touches the screeen. Currently, even coming close to the surface is
taken as a touch land. Here is the rdesc. If it is does not report such
a capability, then something is wrong, I think. I cannot recall having
had such overly responsive behaviour under windows.
How to add support for finger-pressure?
Cedric
[-- Attachment #2: rdesc --]
[-- Type: text/plain, Size: 10987 bytes --]
05 0d 09 04 a1 01 85 04 09 22 a1 00 09 42 15 00 25 01 75 01 95 01 81 02 09 32 15 00 25 01 81 02 09 51 75 05 95 01 16 00 00 26 10 00 81 02 09 47 75 01 95 01 15 00 25 01 81 02 05 01 09 30 75 10 95 01 55 0d 65 33 35 00 46 23 28 26 ff 7f 81 02 09 31 75 10 95 01 55 0d 65 33 35 00 46 11 19 26 ff 7f 81 02 05 0d 09 55 25 08 75 08 95 01 b1 02 c0 c0 05 01 09 01 a1 01 85 01 09 01 a1 00 05 09 19 01 29 02 15 00 25 01 95 02 75 01 81 02 95 01 75 06 81 01 05 01 09 30 09 31 16 00 00 26 ff 0f 36 00 00 46 ff 0f 66 00 00 75 10 95 02 81 02 c0 c0 06 00 ff 09 01 a1 01 09 01 15 00 26 ff 00 85 03 75 08 95 3f 81 02 06 00 ff 09 01 15 00 26 ff 00 75 08 95 3f 91 02 c0 05 0d 09 0e a1 01 85 05 09 22 a1 00 09 52 09 53 15 00 25 0a 75 08 95 02 b1 02 c0 c0
INPUT(4)[INPUT]
Field(0)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
Digitizers.TipSwitch
Logical Minimum(0)
Logical Maximum(1)
Report Size(1)
Report Count(1)
Report Offset(0)
Flags( Variable Absolute )
Field(1)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
Digitizers.InRange
Logical Minimum(0)
Logical Maximum(1)
Report Size(1)
Report Count(1)
Report Offset(1)
Flags( Variable Absolute )
Field(2)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
Digitizers.ContactID
Logical Minimum(0)
Logical Maximum(16)
Report Size(5)
Report Count(1)
Report Offset(2)
Flags( Variable Absolute )
Field(3)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
Digitizers.Confidence
Logical Minimum(0)
Logical Maximum(1)
Report Size(1)
Report Count(1)
Report Offset(7)
Flags( Variable Absolute )
Field(4)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
GenericDesktop.X
Logical Minimum(0)
Logical Maximum(32767)
Physical Minimum(0)
Physical Maximum(10275)
Unit Exponent(13)
Unit(English Linear : Inch^3)
Report Size(16)
Report Count(1)
Report Offset(8)
Flags( Variable Absolute )
Field(5)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
GenericDesktop.Y
Logical Minimum(0)
Logical Maximum(32767)
Physical Minimum(0)
Physical Maximum(6417)
Unit Exponent(13)
Unit(English Linear : Inch^3)
Report Size(16)
Report Count(1)
Report Offset(24)
Flags( Variable Absolute )
INPUT(1)[INPUT]
Field(0)
Physical(GenericDesktop.Pointer)
Application(GenericDesktop.Pointer)
Usage(2)
Button.0001
Button.0002
Logical Minimum(0)
Logical Maximum(1)
Physical Minimum(0)
Physical Maximum(6417)
Unit Exponent(13)
Unit(English Linear : Inch^3)
Report Size(1)
Report Count(2)
Report Offset(0)
Flags( Variable Absolute )
Field(1)
Physical(GenericDesktop.Pointer)
Application(GenericDesktop.Pointer)
Usage(2)
GenericDesktop.X
GenericDesktop.Y
Logical Minimum(0)
Logical Maximum(4095)
Physical Minimum(0)
Physical Maximum(4095)
Unit Exponent(13)
Report Size(16)
Report Count(2)
Report Offset(8)
Flags( Variable Absolute )
INPUT(3)[INPUT]
Field(0)
Application(ff00.0001)
Usage(63)
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
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ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
Logical Minimum(0)
Logical Maximum(255)
Physical Minimum(0)
Physical Maximum(4095)
Unit Exponent(13)
Report Size(8)
Report Count(63)
Report Offset(0)
Flags( Variable Absolute )
OUTPUT(3)[OUTPUT]
Field(0)
Application(ff00.0001)
Usage(63)
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
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ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
ff00.0001
Logical Minimum(0)
Logical Maximum(255)
Physical Minimum(0)
Physical Maximum(4095)
Unit Exponent(13)
Report Size(8)
Report Count(63)
Report Offset(0)
Flags( Variable Absolute )
FEATURE(4)[FEATURE]
Field(0)
Physical(Digitizers.Finger)
Application(Digitizers.TouchScreen)
Usage(1)
Digitizers.ContactMaximumNumber
Logical Minimum(0)
Logical Maximum(8)
Physical Minimum(0)
Physical Maximum(6417)
Unit Exponent(13)
Unit(English Linear : Inch^3)
Report Size(8)
Report Count(1)
Report Offset(0)
Flags( Variable Absolute )
FEATURE(5)[FEATURE]
Field(0)
Physical(Digitizers.Finger)
Application(Digitizers.000e)
Usage(2)
Digitizers.InputMode
Digitizers.DeviceIndex
Logical Minimum(0)
Logical Maximum(10)
Physical Minimum(0)
Physical Maximum(4095)
Unit Exponent(13)
Report Size(8)
Report Count(2)
Report Offset(0)
Flags( Variable Absolute )
Digitizers.TipSwitch ---> Key.Touch
Digitizers.InRange ---> Key.ToolFinger
Digitizers.ContactID ---> Absolute.Misc
Digitizers.Confidence ---> Key.Btn0
GenericDesktop.X ---> Absolute.MTPositionX
GenericDesktop.Y ---> Absolute.MTPositionY
Button.0001 ---> Key.LeftBtn
Button.0002 ---> Key.RightBtn
GenericDesktop.X ---> Absolute.X
GenericDesktop.Y ---> Absolute.Y
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
ff00.0001 ---> Sync.Report
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: HID-Multitouch: eGalax Touchscreen Pressure
2011-11-19 7:00 HID-Multitouch: eGalax Touchscreen Pressure Cedric Sodhi
@ 2011-11-20 11:30 ` Benjamin Tissoires
0 siblings, 0 replies; 2+ messages in thread
From: Benjamin Tissoires @ 2011-11-20 11:30 UTC (permalink / raw)
To: Cedric Sodhi; +Cc: linux-input
Hi Cedric,
On Sat, Nov 19, 2011 at 08:00, Cedric Sodhi <manday@gmx.net> wrote:
> Hello everybody
>
> After I finally got the touchscreen to work thanks to Benjamin, there
> remains one little issue for the eGalax 0eef:a001
>
> I'm pretty sure one could measure the pressure by which the finger(s)
> touches the screeen. Currently, even coming close to the surface is
> taken as a touch land. Here is the rdesc. If it is does not report such
> a capability, then something is wrong, I think. I cannot recall having
> had such overly responsive behaviour under windows.
Well, the reports don't show pressure, so you won't be able to handle
it in a generic way.
Maybe under windows you have a vendor-specific driver that talks to
the proprietary input interface on your device:
With little luck:
You may change the value of the input mode in mt_set_input_mode to
switch the device mode (0x01 means mouse/touchscreen emulation, 0x02
means win7 generic multitouch), try 0x03 for instance...
Then, try to see if the event node is active (do not forget to have
someone reading /dev/input/eventX).
Then, once you decoded the reports, you may write a specific driver
for this eGalax product ;-)
Cheers,
Benjamin
>
> How to add support for finger-pressure?
>
> Cedric
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-11-19 7:00 HID-Multitouch: eGalax Touchscreen Pressure Cedric Sodhi
2011-11-20 11:30 ` Benjamin Tissoires
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