5.1.8. How to use a Mouse instead of the Touchscreen with Matrix¶
A mouse can be used instead of touchscreen input with the Matrix GUI by following these steps. It is also possible to use touchscreen and mouse input simultaneously.
Restrictions: For AM37x and AM35x: The mouse must be connected through a USB 2.0 hub to the EVM. It must not be connected directly to the EVM.
On your Target File system, edit the file: /etc/init.d/matrix-gui-2.0 This script file will set Mouse support by default, but if it detects a touchscreen, then it will setup touchscreen support. If you comment out the touchscreen support then the default will remain mouse support. Use the ‘#’ to comment out the line below:
For Mouse support, Replace:
if [ -e /dev/input/touchscreen0 ] then export QWS_MOUSE_PROTO=Tslib:/dev/input/touchscreen0 fi
# if [ -e /dev/input/touchscreen0 ] # then # export QWS_MOUSE_PROTO=Tslib:/dev/input/touchscreen0 # fi
To Enable both Mouse and touchscreen simultaneously: Replace
export QWS_MOUSE_PROTO="Tslib:/dev/input/touchscreen0 Auto"
Warning: If you enable both, the touchscreen now requires a double touch instead of a single touch.
The Kernel has been configured to enable mouse support in your SDK, so this step is not necessary if you are using the SDK.
If you have built your own kernel: The kernel must be configured to include the PS/2 mouse support. To verify this, run the menuconfig utility.
Device Drivers —> Input device support —> <*> Mouse interface
Device Drivers —> Input device support —> <*> Mice —>
If mouse support is not already included in the kernel, enable the above two configuration by typing ‘y’ and rebuild the kernel. You can find instructions for rebuilding kernel here: