用yocto在Raspberry Pi 3上启动时启动电子应用程序

问题描述 投票:0回答:1

我使用yocto用X11为Raspberry Pi 3和触摸屏制作了图像。我可以通过在串行会话中手动运行命令来启动用Electron(铬)构建的应用程序:

export DISPLAY=:0
/usr/lib/node/electron/dist/electron --no-sandbox /home/root/app

我虽然使用init.d脚本在启动时自动执行此操作,但我想以正确的方式执行操作。我试图使用上述命令在用户目录中创建.Xsession文件,但该文件不起作用,并且我不知道是否可以获取发生情况的日志。

根据this wiki,X11启动有很多步骤。目前,我仅看到一个终端(我猜是从Matchbox终端)和一个鼠标光标。

使用系统启动应用程序的“标准”方法是什么,有没有一种方法可以删除触摸屏的光标?

编辑

这是我的/etc/X11目录的内容:

  • Xsession
  • Xsession.d /
  • xinit /
  • xorg.conf

Xsession

#!/bin/sh

if [ -x /usr/bin/dbus-launch ]; then
    # As this is the X session script, always start a new DBus session.
    eval `dbus-launch --sh-syntax --exit-with-session </dev/null`
    echo "D-BUS per-session daemon address is: $DBUS_SESSION_BUS_ADDRESS"
fi

. /etc/profile

if [ -f $HOME/.profile ]; then
    . $HOME/.profile
fi

SYSSESSIONDIR=/etc/X11/Xsession.d

export CLUTTER_DISABLE_MIPMAPPED_TEXT=1

for SESSIONFILE in $SYSSESSIONDIR/*; do
    set +e
    case "$SESSIONFILE" in
        *.sh)
            . "$SESSIONFILE"
            ;;
        *.shbg)
            "$SESSIONFILE" &
            ;;
        *~)
            # Ignore backup files
            ;;
        *)
            "$SESSIONFILE"
            ;;
    esac
    set -e
done

exit 0

xorg.con f:空。

Xsession.d /

  • 13xdgbasedirs.sh
  • 30xinput_calibrate.sh
  • 89xdgautostart.sh
  • 90XWindowManager.sh

89xdgautostart.sh

XDGAUTOSTART=/etc/xdg/autostart
if [ -d $XDGAUTOSTART ]; then
    for SCRIPT in $XDGAUTOSTART/*; do
        CMD=`grep ^Exec= $SCRIPT | cut -d '=' -f 2`
        $CMD &
    done
fi

90XWindowManager.sh

if [ -x $HOME/.Xsession ]; then
    exec $HOME/.Xsession
elif [ -x /usr/bin/x-session-manager ]; then
    exec /usr/bin/x-session-manager
else
    exec /usr/bin/x-window-manager
fi

还有一个文件/etc/xserver-nodm/Xserver

#!/bin/sh

# This script is only needed to make sure /etc/X11/xserver-common
# can affect XSERVER, ARGS & DPI: otherwise systemd could just use
# /etc/default/xserver-nodm as EnvironmentFile and sysvinit could just
# source the same file

. /etc/profile

# load default values for XSERVER, ARGS, DISPLAY...
. /etc/default/xserver-nodm

# Allow xserver-common to override ARGS, XSERVER, DPI
if [ -e /etc/X11/xserver-common ] ; then
    . /etc/X11/xserver-common
    if [ ! -e $XSERVER ] ; then
        XSERVER=$(which $XSERVER)
    fi
fi

if [ -n "$DPI" ] ; then
    ARGS="$ARGS -dpi $DPI"
fi

exec xinit /etc/X11/Xsession -- $XSERVER $DISPLAY $ARGS $*

和文件/etc/rc5.d/S09xserver-nodm

#!/bin/sh
#
### BEGIN INIT INFO
# Provides: xserver
# Required-Start: $local_fs $remote_fs dbus
# Required-Stop: $local_fs $remote_fs
# Default-Start:     5
# Default-Stop:      0 1 2 3 6
### END INIT INFO

killproc() {            # kill the named process(es)
        pid=`/bin/pidof $1`
        [ "$pid" != "" ] && kill $pid
}

read CMDLINE < /proc/cmdline
for x in $CMDLINE; do
        case $x in
        x11=false)
        echo "X Server disabled" 
        exit 0;
                ;;
        esac
done

case "$1" in
  start)
       . /etc/profile

       #default for USER
       . /etc/default/xserver-nodm
       echo "Starting Xserver"
       if [ "$USER" != "root" ]; then
           # setting for rootless X
           chmod o+w /var/log
           chmod g+r /dev/tty[0-3]
           # hidraw device is probably needed
           if [ -e /dev/hidraw0 ]; then
               chmod o+rw /dev/hidraw*
           fi
       fi

       # Using su rather than sudo as latest 1.8.1 cause failure [YOCTO #1211]
       su -l -c '/etc/xserver-nodm/Xserver &' $USER
       # Wait for the desktop to say its finished loading
       # before loading the rest of the system
       # dbus-wait org.matchbox_project.desktop Loaded
  ;;

  stop)
        echo "Stopping XServer"
        killproc xinit
        sleep 1
        chvt 1 &
  ;;

  restart)
    $0 stop
        $0 start
  ;;

  *)
        echo "usage: $0 { start | stop | restart }"
  ;;
esac

exit 0
linux raspberry-pi3 x11 yocto
1个回答
1
投票

定义完整X会话的正确方法取决于您的会话管理器:在Yocto上,通常是matchbox-session或mini-x-session。从您的描述中,我猜您正在使用mini-x-session(如果找不到会话文件,它会启动终端和窗口管理器)。

引用mini-x-session

if [ -e $HOME/.mini_x/session ]
then
exec $HOME/.mini_x/session
fi

if [ -e /etc/mini_x/session ]
then
exec /etc/mini_x/session
fi

因此添加/ etc / mini_x / session脚本应该可以。

顺便说一句,您可能还需要在会话文件中启动一个窗口管理器(X可以在没有一个窗口管理器的情况下做一些奇怪的事情:]

your-app-here &
exec matchbox-window-manager
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