* Start gimx at boot as a systemd unit (no X needed)
* Led turns on to confirm gimx is running
* Hardware button to shutdown the raspberry pi
It is all documented in my blog http://b.minwi.com/2016/04/17/using-a-p ... with-gimx/ and I'll paste it here as I don't want you to mark it as spam
I had a Driving Force GT wheel which is not supported and it doesn't work in PS4, so it was basically covering in dust... but the community is awesome and there exists a project called gimx that enables support for old wheels in new systems like PS4, so I decided to give it a try, and after a few hours understanding what I needed and getting my hands dirty, it is working perfect with the DIY adapter (using a Chinese atmega32u4 + CP2102 converter) and a Raspberry PI 2.
The official wiki is pretty well documented, so I'm going to explain the addons I've made to fit what I wanted
Autostart at boot in without X
Instead using a .desktop file that will start X and then gimx, I've created a simple systemd init file that starts gimx.
Simply create a file /etc/systemd/system/gimx.service with the following content:
Run systemctl daemon-reload to notify systemd about the new file and systemctl enable gimx && systemctl start gimx to enable the gimx service start at boot and start it in the same line.
Code: Select all
[Unit] Description=GIMX After=syslog.target network.target [Service] User=pi Type=simple ExecStart=/usr/bin/gimx -p /dev/ttyUSB0 -c LogitechDrivingForceGT_G29.xml --nograb Restart=always RestartSec=5 [Install] WantedBy=multi-user.target
Please note LogitechDrivingForceGT_G29.xml file should be available in the pi home directory as /home/pi/LogitechDrivingForceGT_G29.xml
Notify when gimx is running
In order to have a proper confirmation about if the gimx service is up and running, I've created a simple python script that turns a led on if the gimx service is running.
The file is located at /home/pi/blink.py:
As a bonus, I've also added a button so when it is pressed, there is a little blink effect, and the pi is shutted down. Pretty cool uh?
Code: Select all
#!/usr/bin/python import os import time import RPi.GPIO as GPIO led = 23 button = 18 GPIO.setmode(GPIO.BCM) GPIO.setup(led, GPIO.OUT) GPIO.setup(button, GPIO.IN, pull_up_down = GPIO.PUD_UP) def Shutdown(channel): GPIO.output(led, True) time.sleep(0.2) GPIO.output(led, False) time.sleep(0.2) GPIO.output(led, True) time.sleep(0.2) GPIO.output(led, False) os.system("sudo shutdown -h now") GPIO.add_event_detect(18, GPIO.FALLING, callback = Shutdown, bouncetime = 2000) while True: found = False time.sleep(5) pids = [pid for pid in os.listdir('/proc') if pid.isdigit()] for pid in pids: try: cmd = open(os.path.join('/proc', pid, 'cmdline'), 'rb').read() if "gimx" in cmd: found = True except IOError: # proc has already terminated continue if found == True: GPIO.output(led, True) else: GPIO.output(led, False)
The schema is the following:
To start at boot, simply add it to the pi user crontab (crontab -e) as @reboot /home/pi/blink.py
All the wires, pi, etc. is hidden inside a Samsung Galaxy S6 box, which makes it pretty convenient.