Display the splash screen when shutting down

- Also, turn the HDMI off after a short wait

.devcontainer/Dockerfile

@@ -9,7 +9,7 @@ RUN    apt update \
     && apt install -y \
         build-essential git wget binfmt-support qemu gcc-9 \
         parted gcc-avr avr-libc avrdude python3 python3-pip python3-tornado \
-        curl unzip python3-setuptools gcc-arm-linux-gnueabihf bc vim locate sudo \
+        inetutils-ping curl unzip python3-setuptools gcc-arm-linux-gnueabihf bc vim locate sudo \
     && update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 9 \
     && curl -fsSL https://deb.nodesource.com/setup_18.x | bash - \
     && apt install -y nodejs

installer/config/bbctrl-poweroff.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=Turn off HDMI at powerdown
+DefaultDependencies=no
+Before=umount.target
+
+[Service]
+Type=oneshot
+ExecStart=/bin/sh -c ' \
+    killall xinit \
+    && plymouth change-mode --shutdown show-splash \
+    && sleep 10s \
+    && /usr/bin/vcgencmd display_power 0 '
+
+[Install]
+WantedBy=poweroff.target

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "bbctrl",
-  "version": "1.0.10b12",
+  "version": "1.0.10b15",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "bbctrl",
-      "version": "1.0.10b12",
+      "version": "1.0.10b15",
       "hasInstallScript": true,
       "license": "GPL-3.0+",
       "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bbctrl",
-  "version": "1.0.10b12",
+  "version": "1.0.10b15",
   "homepage": "https://onefinitycnc.com/",
   "repository": "https://github.com/OneFinityCNC/onefinity",
   "license": "GPL-3.0+",

scripts/install.sh

@@ -156,6 +156,11 @@ if $UPDATE_PY; then
     service bbctrl restart
 fi
 
+# Install the service that turns off the screen during shutdown
+cp ./installer/config/bbctrl-poweroff.service /etc/systemd/system/
+systemctl daemon-reload
+systemctl enable bbctrl-poweroff
+
 # Expand the file system if necessary
 chmod +x ./installer/scripts/resize_root_fs.sh
 ./installer/scripts/resize_root_fs.sh

src/py/bbctrl/Web.py

@@ -21,18 +21,12 @@ def call_get_output(cmd):
 class RebootHandler(bbctrl.APIHandler):
 
     def put_ok(self):
-        subprocess.Popen(['plymouth', 'show-splash'])
-        subprocess.Popen(['plymouth', 'change-mode', '--shutdown'])
-        subprocess.Popen(['killall', 'xinit'])
         subprocess.Popen(['reboot'])
 
 
 class ShutdownHandler(bbctrl.APIHandler):
 
     def put_ok(self):
-        subprocess.Popen(['plymouth', 'show-splash'])
-        subprocess.Popen(['plymouth', 'change-mode', '--shutdown'])
-        subprocess.Popen(['killall', 'xinit'])
         subprocess.Popen(['shutdown', '-h', 'now'])