Reply To: Tutorial: RetroPie with DualShock 4 and Bluetooth

[diliegrOS]

Hi exonerated, you are completely right, the correct file to edit is /etc/rc.local, it is already changed in the tutorial.

About the problem of connection, (and sorry for my English): There is a solution for that. The problem seems to happen when the controller is paired to the BT dongle in the Raspberry, disconnected, paired on another device, and then paired again to the Raspberry. I think it happens because Bluez has some kind of bug.

Anyway, to fix that you need to delete the controller pair data, you need python-gobject, so:

sudo apt-get install python-gobject

And then:

bluez-simple-agent hciX XX:XX:XX:XX:XX:XX remove

Where X in hciX is the number of your BT device, usually 0 (hci0), check it with:

hciconfig

And XX:XX:XX:XX:XX:XX is the DS4 MAC, that you can get with:

hcitool scan

Once you do the bluez-simple-agent command, you can try ds4drv again, it should connect:

pi@raspberrypi ~ $ ds4drv –led 000008
[info][controller 1] Created devices /dev/input/js0 (joystick) /dev/input/event0 (evdev)
[info][bluetooth] Scanning for devices
[info][bluetooth] Found device A4:15:66:4E:CA:53
[info][controller 1] Connected to Bluetooth Controller (A4:15:66:4E:CA:53)
[info][bluetooth] Scanning for devices
[info][controller 1] Battery: 75%
[warning][controller 1] Signal strength is low (48 reports/s)