Category Archives: Pi2

Setting up PS3 controllers on Retropie (Gasia/ Shanwan clones)

Pi2, Raspberry Pi, Raspbian, , , , , , , , ,

If you like retro-gaming you probably came across RetroPie, which allows to turn your Raspberry Pi into a retro-gaming machine.

RetroPie supports game-controllers of many different brands, however it can be difficult to configure them, especially if you chose a wireless (bluetooth) controller. I decided for a wireless Sony PS3 controller and purchased a pair of “compatible” devices from Aliexpress a.k.a. Gasia/Shanwan clones.

IMG_7667a

The RetroPie Wiki  provides some useful information on how to pair these controllers with a bluetooth dongle. At the moment RetroPie supports PS3 controllers using the sixad daemon, which is part of the QtSixA package.

The QtSixA  Sixaxis Joystick Manager can connect PS3 hardware, but it takes over bluez/ bluetoothd service and other bluetooth devices, so that keyboards or mice can’t connect when sixad is active.

Thus, I was wondering why there is no ‘native’ bluez support for PS3 devices. A Google search revealed that bluez comes with a ‘sixaxis’ plugin supporting only “genuine” PS3 controllers. However, I found on the gmane mailing list that bluez patches are currently under development, but none of them made it into an official or main developer branch, yet.

BlueZ PS3 support using the Sixaxis plugin

Fortunately Szymon Janc, one of the bluez developers, provided some patches for the OpenELEC.tv Mediacenter. [Update: 2016-09-28] However, development of OpenELEC.tv seems to be dead, since there were no updates for quite a while. Therefore, I do not expect that patches supporting other PS3 clones will be released soon.

Here is a short tutorial on how to use these patches for RetroPie and to fix the annoying PS3 Shanwan/Gasia pairing problem:

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Mastering the Raspberry Pi2 kernel update

Kernel, Pi2, Raspbian, ,

As a visitor of many discussion forums about the Raspberry Pi, I recently stumbled upon a lot of cries for help, such as “My RasPi doesn’t boot anymore!” or “Help, my i2c-, spi devices and 1-wire sensors” suddenly disappeared.

Pi2ModB1GB_-compD O N ‘ T   P A N I C!

All of you probably belong to the Raspi lovers, that wan’t  to keep the device’s linux-kernel at a “bleeding-edge” release, doing an “rpi-update” almost every day. Be aware that such a kernel is still tagged as “experimental”, so that it can seriously damage your Raspbian installation. The number of messages is still very high in all discussion forums and a lot of experienced users already became tired in answering the help requests.

To be on the safe site, update your system using “apt-get update && apt-get upgrade” or “apt-get dist-upgrade”, unless you know what you are doing. If your upgrade already has failed, but you’re still able to boot the system, you can roll-back to a previous release with:

sudo rpi-update b2f6c103e5355bee90ff57f55cdf6d7005485a23

The long string represents the Git hash for the specific firmware revision. You can look for those hash in the rpi-update git repos commits list: https://github.com/Hexxeh/rpi-firmware/commits/master.

However, if you want to stay with the latest 3.18 kernel branch, here’s what you can do to solve your problems with i2c, spi, lirc and 1-wire:

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