hid output?

Reply to hid output? on Tue, 23 Jul 2024 07:23:16 GMT

ben.wes — Tue, 23 Jul 2024 07:23:16 GMT

i'm currently using the [hidraw] external on macOS to read inputs from a PS5 dualsense controller.

it's a wonderful external and works great for this - but it doesn't allow to output hid data to the controller (to control force feedback etc.). any ideas if there is a solution for this that i might be missing (on macOS)?

Reply to hid output? on Tue, 23 Jul 2024 08:18:49 GMT

oid — Tue, 23 Jul 2024 08:18:49 GMT

@ben.wes Does OSX have /proc/ or something like it where devices can be written too? Would mean you can just use [command] to write to the appropriate file. Or perhaps OSX has a command for this which you can run from [command]? Have not used OSX to any real extent since 10.2 so no idea how far it has strayed from its BSD roots.

Reply to hid output? on Tue, 23 Jul 2024 09:53:52 GMT

ben.wes — Tue, 23 Jul 2024 09:53:52 GMT

@oid thanks for pointing me to the option of using [command]! /proc/ is not available on macOS afaict - but in the [command] context, i might use a little tool i found here: https://github.com/todbot/hidapitester

... i admit that i'm a bit scared of destroying things with these low level hid commands. will try to understand of bit more before actually writing data!

Reply to hid output? on Tue, 23 Jul 2024 12:50:06 GMT

ben.wes — Tue, 23 Jul 2024 12:50:06 GMT

following up here if anyone else is curious about this:

while searching for more information on the hid "output report" structure of the dualsense controller, i stumbled upon a python library that implements all of this here: https://github.com/flok/pydualsense/blob/master/pydualsense/pydualsense.py#L445

based on that, i finally felt confident enough to give it a try with a short report that should only change the bytes for the big motors:

hidapitester --vidpid 054C:0CE6 -l 5 --open --send-output 2,255,87,80,160

... the last 2 bytes being the motor levels. aaaand ... it works!

turning them off again via:

hidapitester --vidpid 054C:0CE6 -l 5 --open --send-output 2,255,87,0,0