Button library for arduino with support of almost use cases and optimized memory footprint

Size of SmallButton class - 4 bytes.

• Single button press
• Single press and repeat
• Press or release
• Release
• Get current state
• Support invert flag: active button state can be 0 or 1
• Configure pullup resistor

#define SMALL_BUTTON_FILTER_TIME_MS 100 // this line must be above include
#include "SmallButton.h"

Example of usage:

#include <SmallButton.h>

SmallButton button(1); // 1 - pin number

void setup() {
  Serial.begin(115200); // initialize serial to print log
  button.begin(); // initialize button
}

void loop() {
  if(button.get() & SmallButton::PRESS_OR_REPEAT) {
    Serial.println("Button pressed");
  }
}

Note: get() method returns bit flags with all events, so DO NOT call it in a way:

if((button.get() & SmallButton::PRESS) || (button.get() & SmallButton::REPEAT))

because you may skip events. Use masks from SmallButton::EventMask, or store result value in a variable and then deal with it.