arduino-esp32/libraries/ESP32/examples/GPIO/FunctionalInterrupt/FunctionalInterrupt.ino

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#include <Arduino.h>
#include <FunctionalInterrupt.h>
#define BUTTON1 16
#define BUTTON2 17
class Button
{
public:
Button(uint8_t reqPin) : PIN(reqPin){
pinMode(PIN, INPUT_PULLUP);
attachInterrupt(PIN, std::bind(&Button::isr,this), FALLING);
};
~Button() {
detachInterrupt(PIN);
}
void IRAM_ATTR isr() {
numberKeyPresses += 1;
pressed = true;
}
void checkPressed() {
if (pressed) {
Serial.printf("Button on pin %u has been pressed %u times\n", PIN, numberKeyPresses);
pressed = false;
}
}
private:
const uint8_t PIN;
volatile uint32_t numberKeyPresses;
volatile bool pressed;
};
Button button1(BUTTON1);
Button button2(BUTTON2);
void setup() {
Serial.begin(115200);
}
void loop() {
button1.checkPressed();
button2.checkPressed();
}