SmartButton Library is used for handling various button events. It supports button press, release, multiple click and button hold events. Library is implemented in C++ with build-in Arduino port, but it is easy to port to different architecture.
- asynchronous non-blocking API based on events callbacks
- hardware independent high-level architecture
- works well with digital, analogs and other signal input backends
- easy to use with Arduino boards
- unlimited number of buttons
- support multi-click events
- support press and release events
- support hold and long-hold events
- support auto-repeat events during hold and long-hold
- build-in debounce algorithm
- configurable timeouts
- hold auto-repeat periodic events added
- optional initialization by object-interface added
- optional initialization by bool-pointer added
- optional context passing added
Single and double click example:
#include <Arduino.h>
#include <SmartButton.h>
constexpr int BUTTON_PIN = 2;
constexpr int LED_PIN = 13;
using namespace smartbutton;
SmartButton button(BUTTON_PIN, SmartButton::InputType::NORMAL_HIGH);
void setup()
{
pinMode(LED_PIN, OUTPUT); // Digital output for led
pinMode(BUTTON_PIN, INPUT_PULLUP); // Digital input with pull-up resistors (normal high)
// Initialize and register smart button
button.begin([] (SmartButton *button, SmartButton::Event event, int clickCounter)
{
if (event == SmartButton::Event::CLICK) { // Click event handler
if (clickCounter == 1) {
digitalWrite(LED_PIN, LOW); // Single click will turn led off
} else if (clickCounter == 2) {
digitalWrite(LED_PIN, HIGH); // Double click will turn led on
}
}
});
}
void loop()
{
SmartButton::service(); // Asynchronous service routine, should be called periodically
}