What steps are necessary to detect sensors in a controller?

I’m having trouble with getting the motion controls from the Dualsense controller I have plugged into my computer.

To try isolating whatever is going wrong, I made a simple test program:

// Starting up the program


// Initializing the controller
SDL_GameController* gc = SDL_GameControllerOpen(0);

SDL_GameControllerSetSensorEnabled(gc, SDL_SENSOR_ACCEL, SDL_TRUE);
SDL_GameControllerSetSensorEnabled(gc, SDL_SENSOR_GYRO, SDL_TRUE);

// Polling the controller
if(SDL_GameControllerHasSensor(gc, SDL_SENSOR_GYRO))
	cout << SDL_GameControllerName(gc) << " has a gyroscope." << endl;
	cout << SDL_GameControllerName(gc) << " does not have a gyroscope." << endl;

Now I know this PlayStation 5 controller has a gyroscope in it, but I don’t know SDL all that well. What am I not doing to properly set up the HID and its sensors? The output, Sony Interactive Entertainment Wireless Controller does not have a gyroscope., tells me I’m at least accessing the device in a coherent manner.

What steps are missing in my code?

At least, SDL2 finds the sensors of my PS4 controller with this code. What OS and what version of SDL2 are you using right now? I had problems finding the sensors on linux using older versions of SDL2 for example.

v2.0.14, with Kubuntu Linux 21.10

UPDATE #1: I compiled v2.0.21 and installed it. Now the program says PS5 Controller does not have a gyroscope., which is at least more specific than my last attempt. :laughing:

UPDATE #2: Oh, I just had to restart.

Hi, I just got my hands on a PS5 controller and figured out that gyro does not work, because there is (at least in ubuntu 20.04) no udev rule for the controller in the steam-devices package (which usually covers most controllers). You are using kubuntu, so this might be the problem.

Add this file to /etc/udev/rules.d:

# /etc/udev/rules.d/60-ps5.rules
# PS5 DualSense controller over USB hidraw
KERNEL=="hidraw*", ATTRS{idVendor}=="054c", ATTRS{idProduct}=="0ce6", MODE="0660", TAG+="uaccess"

# PS5 DualSense controller over bluetooth hidraw
KERNEL=="hidraw*", KERNELS=="*054C:0CE6*", MODE="0660", TAG+="uaccess"

Reload the rules:

sudo udevadm control --reload-rules && sudo udevadm trigger

then reconnect the controller. Gyro and accel should work now.