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USBHost : KeyboardController class

getModifiers()

Description

Reports any modifier keys pressed or released on an attached USB keyboard.

Syntax

keyboard.getModifiers()

Parameters

none

Returns

int : a numeric representation of the modifier keys being pressed. Values for the keys are below.

• LeftCtrl = 1
• LeftShift = 2
• Alt = 4
• LeftCmd = 8
• RightCtrl = 16
• RightShift = 32
• AltGr = 64
• RightCmd = 128

Example

#include <KeyboardController.h> // Initialize USB Controller
USBHost usb; // Attach Keyboard controller to USB
KeyboardController keyboard(usb) ; void setup ( ) {
  Serial.begin ( 9600 ) ;
} void loop ( ) {
  usb.Task ( ) ;
  int mod = keyboard.getModifiers ( ) ;
  Serial.print ( "mod: " ) ;
  Serial.print (mod) ;
}

See Also

• keyPressed()
• keyReleased()
• getKey()
• getOemKey()
• KeyboardController example

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