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Inkplate 6MOTION - User buttons

The Inkplate 6MOTION features three onboard buttons that can be used for user interaction or to wake the device from deep sleep. These buttons are:

  • USER1 (INKPLATE_USER1)
  • USER2 (INKPLATE_USER2)
  • WAKE (INKPLATE_WAKE)

The WAKE button has a special function: it can wake Inkplate 6MOTION from deep sleep. See here for more info on waking via WAKE button.

Configuration​

The buttons need to be configured as input pull-ups, meaning they are normally HIGH and go LOW when pressed:

// Configure button pin modes
pinMode(INKPLATE_USER1, INPUT_PULLUP);
pinMode(INKPLATE_USER2, INPUT_PULLUP);
pinMode(INKPLATE_WAKE, INPUT_PULLUP);

Reading button presses​

A simple way to detect button presses is using digitalRead(). The example below waits for a button press and identifies which button was pressed by returning an integer:

int getButtonPress() {
  // Wait for button press and return which button was pressed accordingly
  while (true) {
    if (digitalRead(INKPLATE_USER1) == LOW)
      return 1;
    if (digitalRead(INKPLATE_USER2) == LOW)
      return 2;
    if (digitalRead(INKPLATE_WAKE) == LOW)
      return 3;
    
    delay(5);  // Short debounce delay
  }
}

Full example​

For an all-in-one demonstration, the Inkplate Motion library provides an example:

Inkplate_6_MOTION_Buttons.ino

Full example with pressing buttons and printing out which one was pressed