View source for ORCA-TN-003 — Automated test equipment (ATE) monitoring with ORCA SBC, ThingsBoard IoT, and Fledge

==Visualize Fledge GUI on a local display==
To visualize the GUI on the local display, we run a web browser configured to operate in kiosk mode.
===Installing Weston===
First of all, we install [https://wayland.freedesktop.org/ Weston], the compositor required by the browser.

<pre class="workstation-terminal"> 
armbian@sbcorca-00a5:~$ sudo apt update
Hit:1 http://deb.debian.org/debian bullseye InRelease
...
armbian@sbcorca-00a5:~$ sudo apt-get install weston
...
</pre>

Create the file <code>/lib/systemd/system/weston.service</code> with the following contents:

‎<syntaxhighlight>
[Unit]
Description=Weston wayland compositor
After=systemd-logind.service

# D-Bus is necessary for contacting logind. Logind is required.
Wants=dbus.socket
After=dbus.socket
Before=graphical.target

[Service]
Type=oneshot
EnvironmentFile=/etc/default/weston
ExecStart=/usr/bin/weston --shell=kiosk-shell.so

# The user to run Weston as.
User=root
Group=root

# Make sure the working directory is the users home directory
WorkingDirectory=/root/weston

# Set up a full user session for the user, required by Weston.
PAMName=weston-autologin

# A virtual terminal is needed.
TTYPath=/dev/tty7
TTYReset=yes
TTYVHangup=yes
TTYVTDisallocate=yes

[Install]
WantedBy=graphical.target
‎</syntaxhighlight>

Then execute these commands in order to run it as a service:

<pre class="workstation-terminal"> 
armbian@sbcorca-00a5:~$ sudo touch /etc/default/weston
armbian@sbcorca-00a5:~$ sudo mkdir /root/weston
armbian@sbcorca-00a5:~$ sudo systemctl enable weston
Created symlink /etc/systemd/system/graphical.target.wants/weston.service → /lib/systemd/system/weston.service.
armbian@sbcorca-00a5:~$ sudo systemctl start weston
</pre>

===Installing Chromium===
The browser used for this TN is [https://www.chromium.org/chromium-projects/ Chromium]. To install it, please follow these steps.

<pre class="workstation-terminal">
armbian@sbcorca-00a5:~$ sudo apt-get install chromium
Reading package lists... Done
...
</pre>

Create the file <code>/lib/systemd/system/browser.service</code> with the following contents:
‎
<syntaxhighlight>
[Unit]
Description=Chromium browser service
After=systemd-logind.service
StartLimitIntervalSec=0
Wants=dbus.socket
After=dbus.socket

[Service]
Type=simple
Restart=always
RestartSec=5
User=root

PAMName=chromium-autologin

ExecStart=/usr/bin/chromium --ozone-platform=wayland --kiosk --no-sandbox https://www.dave.eu

[Install]
WantedBy=graphical.target
</syntaxhighlight>

Start it as a service:

<pre class="workstation-terminal">
armbian@sbcorca-00a5:~$ sudo systemctl enable browser
Created symlink /etc/systemd/system/graphical.target.wants/browser.service → /lib/systemd/system/browser.service.
armbian@sbcorca-00a5:~$ sudo systemctl start browser
</pre>

If everything works as expected, you will see the home page of the DAVE Embedded Systems' website:

[[File:ORCA-TN-003-4.png|center|thumb|600x600px]] 


===Opening the local web application===
To open the local web application, just replace https://www.dave.eu with http://localhost:4200 in <code>/lib/systemd/system/browser.service</code>. To make the change effective, issue the following commands:
<pre class="workstation-terminal">
armbian@sbcorca-00a5:~$ sudo systemctl daemon-reload
armbian@sbcorca-00a5:~$ sudo systemctl restart browser
</pre>
The home page of Fledge GUI will be displayed:

[[File:ORCA-TN-003-5.png|center|thumb|600x600px]]