Retrostone 2 Pro

This small repository contains a couple helpers, scripts and documentation around the Retrostone 2 Pro.
It represents also how I set up my Retrostone 2 Pro and will be the foundation for my next installation.
The Retrostone 2 Pro can be purchased on http://8bcraft.com.

Setup Retrostone 2

1. Download from http://www.retrorangepi.org/download/

2. Flash SD Card

3. Run Installation

4. Setup wifi

5. Upload SSH keys for simpler login
   Default password for user pi is pi.
   Default password for root is orangepi.

   ssh root@rs2 "mkdir ~/.ssh"
   scp ~/.ssh/id_rsa.pub root@rs2:~/.ssh/authorized_keys
   ssh pi@rs2 "mkdir ~/.ssh"
   scp ~/.ssh/id_rsa.pub pi@rs2:~/.ssh/authorized_keys

6. Change the user passwords
   Default password for user pi is pi.
   Default password for root is orangepi.

   ssh root@rs2 passwd
   ssh pi@rs2 passwd

7. Format eMMC storage for the home directory
   (This step is only necessary on the very first setup of the Retrostone. If it was done before, please skip)

   ssh pi@rs2
   sudo fdisk /dev/mmcblk1

   p to list all partitions, then d and a number to delete all existing partitions, then w to write the changes n to create a new partition, then use all the defaults, then w to write the changes.

   Format disk and copy home directory (you have to ensure that you are not in a directory under /home)

   sudo mkfs.ext4 -L "emmc" /dev/mmcblk1p1
   sudo mount /dev/mmcblk1p1 /mnt
   sudo mv /home /mnt
   sudo umount /mnt

8. Add disk to the fstab so it is mounted on boot

   sudo cat >>/etc/fstab
   /dev/mmcblk1p1      /home       ext4    defaults    0   0

Auto shutdown when battery goes low

A small shell script which observes the battery state. If < 3% of capacity is left, it will beep 5 times and afterwards call shutdown -h 3 so you have 3 minutes to save all game state before it is going to be shutdown.

sudo cp src/autoshutdown.service /etc/systemd/system/
sudo cp src/autoshutdown.sh /usr/bin/
sudo chmod 755 /usr/bin/autoshutdown.sh
sudo systemctl enable autoshutdown.service
sudo systemctl start autoshutdown.service

WiFi in the Retropie Menu

Adding the Enable WiFi switch dirctly into the Retropie Menu as it is annoying always having to open a submenu to do so.

ln -s ~/RetroPie/retropiemenu/RetrOrangePi/Wifi/Enable.sh ~/RetroPie/retropiemenu/Enable\ Wifi.sh

Fix of controller issues

After a long period of intense playing on a device without mounted joystick it happened that the character moves non-stop to the left. Only a restart of the device could fix it, but only for a very limited timeframe. I updated the GPIO controller and disabled the joystick code. To install and use the updated code:

cp src/tz_gpio_controller.py /home/pi/RetrOrangePi/GPIO/drivers/tz_gpio_controller.py
ps aux | grep tz_gpio | grep sudo | awk '{ printf("sudo kill -9 %s\n", $2); }' | /bin/bash
sudo python /home/pi/RetrOrangePi/GPIO/drivers/tz_gpio_controller.py &

No additional action required after restart of the Retrostone.