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

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:copy and rename&nbsp;<code>.config</code>&nbsp;to <code>arch/arm/configs/imx_v7_android_defconfig</code>&lt;/code&gt;<br/>
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I2C interface
 +
 
 +
*Enable I2C bus&nbsp;in menuconfig
 +
<pre>Device drivers --->
 +
        I2C support  --->
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            <*> I2C support
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                [*]  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  --->
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                            <*> Atmel AT91 I2C Two-Wire interface (TWI)
 +
                            <*> GPIO-based bitbanging I2C
 +
 
 +
</pre>
 +
 
 +
copy and rename .config to arch/arm/configs/imx_v7_android_defconfig
  
 
==== Test ====
 
==== Test ====

Revision as of 04:14, 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


I2C interface

  • Enable I2C bus in menuconfig
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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