タクトスイッチのチャタリング対策をしてみた

...
	void ARDUINO_ISR_ATTR isr() {
        const unsigned long now = millis();

        diff_times[numberKeyPresses] = now - falled_time_ms;
        numberKeyPresses += 1;
        pressed = true;
        falled_time_ms = now;
	}

	void checkPressed() {
		if (pressed) {
            for(int i = 0 ; i < numberKeyPresses; i++){
                Serial.printf("diff time %u ms\n", diff_times[i]);
            }

		    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 = 0;
    volatile bool pressed = false;
    volatile unsigned long falled_time_ms = 0;
    volatile unsigned long diff_times[128] = {};
};

...

// ここを変えないとreboot祭りになってしまった。
Button* button1;

void setup() {
    Serial.begin(115200);
    button1 = new Button(BUTTON1);
}

void loop() {
	button1->checkPressed();
}

....
	void ARDUINO_ISR_ATTR isr() {
        const unsigned long now = millis();
        const unsigned long diff = now - falled_time_ms;
        diff_times[numberKeyPresses] = diff;

        if(diff > CHATTERING_TIME_MS){
            numberKeyPresses += 1;
            pressed = true;
        }

        falled_time_ms = now;
	}