Button

The available buttons on a V5 Controller are as follows:

V5 Controller
ButtonA - The A button. ButtonB - The B button. ButtonX - The X button. ButtonY - The Y button. ButtonDown - The Down button. ButtonUp - The Up button. ButtonLeft - The Left button. ButtonRight - The Right button. ButtonL1 - The L1 button. ButtonL2 - The L2 button. ButtonR1 - The R1 button. ButtonR2 - The R2 button.

pressed()

The pressed(callback) method registers a function to be called when a button is pressed.

Parameter	Description
callback	A function that will be called when the button is pressed.

Returns: An instance of the Event class.

// Define the buttonPressed function with a void return
// type, showing it doesn't return a value.
void buttonPressed() {
  // The Brain will print that a controller button was
  // pressed on the Brain's screen.
  Brain.Screen.print("controller button pressed");
}

int main() {
  // Initializing Robot Configuration. DO NOT REMOVE!
  vexcodeInit();

  // Run buttonPressed when the 'A' controller button is pressed.
  Controller.ButtonA.pressed(buttonPressed);
}

released()

The released(callback, arg) method registers a function to be called when a button is released.

Parameter	Description
callback	A function that will be called when the button is released.
arg	Optional. A parameter to pass to the callback function.

Returns: An instance of the Event class.

// Define the buttonReleased function with a void return
// type, showing it doesn't return a value.
void buttonReleased() {
  // The Brain will print that a controller button was
  // released on the Brain's screen.
  Brain.Screen.print("controller button released");
}

int main() {
  // Initializing Robot Configuration. DO NOT REMOVE!
  vexcodeInit();

  // Run buttonReleased when the 'A' controller button is released.
  Controller.ButtonA.released(buttonReleased);
}

pressing()

The pressing() method returns whether a button is currently being pressed.

Returns: True if the button is currently being pressed. False if it is not currently being pressed.