Difference between revisions of "IoTGateway/BSP/Android/Gettingstarted/How to configure Capacitive Multi-touch Display"

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       HID Devices --->
 
       HID Devices --->
 
             [*]/dev/hidraw raw HID device support Special HID drivers --->
 
             [*]/dev/hidraw raw HID device support Special HID drivers --->
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                   <*> HID Multitouch panels
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                   <*> HID Multitouch panels&nbsp;</pre>
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</pre>
 
  
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{|
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Enable I2C bus&nbsp;in menuconfigI2C interface
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|-
 
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|
 
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<tt>Device Drivers ---></tt>
 
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:<tt>Input device support ---></tt>
 
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::<tt>'''&lt;*&gt;'''&nbsp;Event interface</tt>
 
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::<tt>Miscellaneous devices ---></tt>
 
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:::<tt>'''&lt;*&gt;'''&nbsp;User level driver support</tt>
 
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:<tt>HID Devices ---></tt>
 
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::<tt>'''[*]'''&nbsp;/dev/hidraw raw HID device support</tt>
 
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::<tt>Special HID drivers ---></tt>
 
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:::<tt>'''&lt;*&gt;'''&nbsp;HID Multitouch panels</tt>
 
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|}
 
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I2C interface
 
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*Enable I2C bus&nbsp;in menuconfig
 
 
<pre>Device drivers --->
 
<pre>Device drivers --->
 
         I2C support  --->
 
         I2C support  --->

Revision as of 04:26, 3 February 2017

Configure

HID interface

  • Enable HID in menuconfig
Device Drivers --->
       Input device support --->
            <*> Event interface Miscellaneous devices --->
                  <*>User level driver support 
       HID Devices --->
            [*]/dev/hidraw raw HID device support Special HID drivers --->
                  <*> HID Multitouch panels 

Enable I2C bus in menuconfigI2C interface 

Device drivers --->
        I2C support  --->
            <*> I2C support
                [*]   Enable compatibility bits for old user-space
                <*>   I2C device interface
                <*>   I2C bus multiplexing support
                        Multiplexer I2C Chip support  --->
                [*]   Autoselect pertinent helper modules
                        I2C Hardware Bus support  --->
                            <*> Atmel AT91 I2C Two-Wire interface (TWI)
                            <*> GPIO-based bitbanging I2C

copy and rename .config to arch/arm/configs/imx_v7_android_defconfig

Test

The getevent tool provides information about the touch device. 

# getevent -lt
[   78826.389007] EV_ABS       ABS_MT_TRACKING_ID   0000001f
[   78826.389038] EV_ABS       ABS_MT_PRESSURE      000000ab
[   78826.389038] EV_ABS       ABS_MT_POSITION_X    000000ab
[   78826.389068] EV_ABS       ABS_MT_POSITION_Y    0000025b
[   78826.389068] EV_ABS       ABS_MT_SLOT          00000001
[   78826.389068] EV_ABS       ABS_MT_TRACKING_ID   00000020
[   78826.389068] EV_ABS       ABS_MT_PRESSURE      000000b9
[   78826.389099] EV_ABS       ABS_MT_POSITION_X    0000019e
[   78826.389099] EV_ABS       ABS_MT_POSITION_Y    00000361
[   78826.389099] EV_SYN       SYN_REPORT           00000000
[   78826.468688] EV_ABS       ABS_MT_SLOT          00000000
[   78826.468688] EV_ABS       ABS_MT_TRACKING_ID   ffffffff
[   78826.468719] EV_ABS       ABS_MT_SLOT          00000001
[   78826.468719] EV_ABS       ABS_MT_TRACKING_ID   ffffffff
[   78826.468719] EV_SYN       SYN_REPORT           00000000
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