I need to make a QT app to run on the startup of an embedded linux system that I made. I have access to the system via serial port ttySAC0. I tried adding the app to inittab , it runs but tslib is not working, probably because it can't find the environment variables it needs to work because I'm setting those environment variables in the /etc/.profile file which runs after user login. I need to auto login a user so the environment variables are set so tslib would work, or a way to set those environment variables without logging in. The system is made with buildroot and busybox.
I've figured it out, I made this shell script:
#!/bin/sh
#
#Sets necessary environment variables and runs the desktop
#
export TSLIB_TSDEVICE=/dev/touchscreen-1wire
export TSLIB_TSEVENTTYPE=INPUT
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_PLUGINDIR=/usr/lib/ts/
export TSLIB_CONSOLEDEVICE=none
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_CALIBFILE=/etc/pointercal
export LD_LIBRARY_PATH=/usr/lib
export QTDIR=/usr/lib/qt
export QWS_MOUSE_PROTO=tslib:/dev/touchscreen-1wire
/path/to/application -qws
Then made it executable with:
$chmod +x startup.sh
then added this line to inittab:
tty1::once:/path/to/startup.sh
Now when I boot up, the application is running fine with tslib and I still got acces via serial line whenever I need.