![]() It updates real time for any status change, such as button press, button release, joystick movement. We are using ev_type, code and value to monitor the PS4 controller inputs. tv_usec (long unsigned value) : Microsecond portion of the timestamp.tv_sec (long unsigned value) : Time in seconds since epoch at which event occurred.Based on the information we reviewed, we learnt that event4 contains 16 bytes of data as shown below, We are going to use the Wireless Controller to control the Dog, event4 is the target handler to get all inputs information. Handler Event 4 = Input4 – Wireless Controller.Handler Event 3 = Input3 – Wireless Controller Motion Sensors.Handler Event 2 = Input2 – Wireless Controller Touchpad.Handler Event 1 = Input1 – EV3 Brick Buttons.Handler Event 0 = Input0 – LEGO Mindstorms EV3 Speaker.When we looked into the device detail from /proc/bus/input/devices, we can get the following details, As shown below, event2, event3 and event4 are created when the PS4 controller is connected. Since ev3dev is Linux based, when PS4 controller connected to the EV3 Brick via Bluetooth, we can identify the handler from a directory call /dev/input. ![]() Thanks for Anton’s Mindstorms Hacks, evdev and Linux Input drivers v1.0 (c) 1999-2001 Vojtech Pavlik, they gave us good idea how Linux deal with inputs. This is an extended project of LEGO MindStorms – Znap with a remote controller, please refer it for the Dog movement and communication between EV3 Bricks. ![]()
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