Difference between revisions of "IoTGateway/BSP/Android/Gettingstarted/How to configure Capacitive Multi-touch Display"
From ESS-WIKI
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<*> I2C bus multiplexing support | <*> I2C bus multiplexing support | ||
Multiplexer I2C Chip support ---> | Multiplexer I2C Chip support ---> | ||
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</pre> | </pre> | ||
Revision as of 04:27, 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 --->
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