how to start your application on boot in yocto

1. Create "recipes-support" folder in your own custom layer
2. Inside the "recipes-support" folder, create a folder for example "test"
3. Inside "test" folder, create "test" recipe, $touch test_0.1.bb
4. Open test_0.1.bb and update it with the following:

SUMMARY = "Test Application"
LICENSE = "CLOSED"

inherit update-rc.d
SRC_URI = "file://test.c \

       "

do_compile () {
    ${CC} ${CFLAGS} ${LDFLAGS} ${WORKDIR}/test.c  -o ${WORKDIR}/test
}

do_install () {
    install -d ${D}${sysconfdir}/init.d
    install -m 0755 ${WORKDIR}/test_service ${D}${sysconfdir}/init.d/test_service

    install -d ${D}${sbindir}
    install -m 0755 ${WORKDIR}/test ${D}${sbindir}/
}

INITSCRIPT_NAME = "test_service"
INITSCRIPT_PARAMS = "start 99 1 2 3 4 5 . stop 20 0 1 6 ."

RDEPENDS_${PN} = "initscripts"

CONFFILES_${PN} += "${sysconfdir}/init.d/test_service"

5. Make sure you create "files" folder and put test.c, and test_service in it

test_service:

case "$1" in

  start)

    echo -n "Starting test application: "

    start-stop-daemon --start --exec  /usr/sbin/test

    echo "done"

    ;;  

  stop)

    echo -n "Stopping test application"

    start-stop-daemon --stop --exec /usr/sbin/test

    echo "done"

    ;;  

  restart)

    $0 stop

    $0 start

    ;;  

  *)  

    echo "Usage: test_service { start | stop | restart }" >&2

    exit 1

    ;;

esac

exit 0