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+====== Zero Rocrail Server ======
+  * [[:wio:wiopi-en|WIOpi]]
+    * [[:wiopi-pios-en|PiOS]]
+{{:wiopi:zero-usb-serial.jpg?300}}\\
+=====Introduction=====
+The Rasberry Zero has two USB connectors:
+|< >|
+^ Code ^ Usage ^
+| PWR | 5V power supply |
+| USB | Normal USB port |
+The USB connector can be used to connect a CommandStation with Serial port.\\
+This will be available in Rocrail as device ''/dev/ttyUSB0''.\\
+ \\
+=====Setup Zero=====
+Provide the Zero with a PiOS Lite SD-Card and activate ssh and WiFi.\\
+How to setup a Raspberry Pi is found on many places in Internet, so it won't be part of this Wiki.\\
+Some hints and tips can be found here: [[:rocnet:headless-cam-en|Headless CAM]] \\
+ \\
+=====Setup Rocrail=====
+Open an ssh session with the zero.\\
+====Install the Server====
+<code>
+sudo apt install zip
+mkdir Rocrail
+cd Rocrail/
+wget https://wiki.rocrail.net/rocrail-snapshot/Rocrail-ARMHF.zip
+unzip Rocrail-ARMHF.zip
+</code>
+====Create a Workspace and Startup script====
+<code>
+cd
+mkdir RocrailZero
+nano startrocrail.sh
+</code>
+Content of startrocrail.sh:
+<code>
+#!/bin/sh
+cd /home/pi/RocrailZero
+/home/pi/Rocrail/bin/rocrail -l /home/pi/Rocrail/bin
+if [ $? -eq 70 ]
+then
+  sudo halt -p
+fi
+</code>
+The last 4 lines will shut down the Zero properly in case of a normal end, but is of course optional.\\
+A normal Server end is signalled by the return value of 70.\\
+Booting the Zero 2 W is very fast, so the Rocrail server is available after 10...20 seconds.\\
+====Make startrocrail.sh executable====
+<code>
+chmod +x startrocrail.sh
+</code>
+====Add a line in CronTab====
+<code>
+crontab -e
+@reboot /home/pi/startrocrail.sh
+</code>
+====Update the Server====
+<code>
+cd ~/Rocrail/
+wget https://wiki.rocrail.net/rocrail-snapshot/Rocrail-ARMHF.zip
+unzip Rocrail-ARMHF.zip
+</code>
+ \\
+=====GO=====
+After a reboot the Rocrail server will be started automatically, and every Rocrail Client can connect to it by the Network name as assigned at the Zero setup.\\
+__**Note:**__ The default network name is //Raspberry//. (Rename it)\\
+ \\
+=====Command Stations=====
+Every __**[[:english#command_stations|Command Station]]**__ featuring a serial USB, LAN or WLAN connection can be connected.\\
+ \\
+=====WIOpi=====
+Parallel a __**[[:wio:wiopi-en|WIOpi]]**__ can be active on the same Zero.\\
+It will automatically connect to the Rocrail Server.\\