OK3568 4.19.206 Buildroot Auto-start Applications on Boot

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Copyright

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Revision History

Date	Version	Revision History
04/08/2022	V1.0	Initial Version

Auto-start Applications on Boot

When viewing the /etc/init.d directory, you will find many script files starting with “K” or “S”. These scripts run automatically during system startup and shutdown: scripts beginning with “S” run at boot, while those beginning with “K” run at shutdown.

In Linux buildroot, the desktop application is launched via the /etc/init.d/S99matrix-browser script file. To auto-start your own application, you can modify this file and replace the desktop application startup command with your own program.

Step 1: Create and compile a runnable “Hello World” Qt application to generate the executable binary file helloworld for the development board;

Step 2: Copy the helloworld file generated in Step 1 to the /usr/bin/ directory on the development board;

Step 3: Modify /etc/init.d/S99matrix-browser as shown in the following code, then save and exit:

#!/bin/sh

. /etc/profile

case “$1” in

start)

            printf "Starting matrix: "

            export LC_ALL='zh_CN.utf8'
                # Uncomment to disable mirror mode
    
            # unset WESTON_DRM_MIRROR
                export XDG_RUNTIME_DIR=${XDG_RUNTIME_DIR:-/var/run}
    
            export QT_QPA_PLATFORM=${QT_QPA_PLATFORM:-wayland}

            {

                    # Wait for weston ready

                    while [ ! -e ${XDG_RUNTIME_DIR}/wayland-0 ]; do

                            sleep .1

                    done

#/usr/bin/matrix-browser -no-sandbox –disable-gpu 127.0.0.1 >> /dev/null &

/usr/bin/helloworld

            }&

    ;;

stop)

            #killall matrix-browser

killall helloworld

            printf "stop finished"

    ;;

*)

    echo "Usage: $0 {start|stop}"

    exit 1

    ;;

esac

exit 0

Step 4: Enter the sync command to save changes synchronously, then reboot the development board. You will see the helloworld program start automatically.