ESP32: GPIO 入力

プログラム

button_monitor.ino

// ---------------------------------------------------------------------
//	button_monitor.ino
//
//						Feb/04/2023
// ---------------------------------------------------------------------
#define	PROGRAM	"button_monitor.ino"
#define	VERSION	"2023-2-4 AM 10:30"

const int buttonPin = 15;  // the number of the pushbutton pin
const int ledPin = 13;    // the number of the LED pin

// variables will change:
int buttonState = 0;
int buttonState_before = 0;

// ---------------------------------------------------------------------
void setup()
{
	Serial.begin(115200);
	delay(3000);
	Serial.println(PROGRAM);
	Serial.println(VERSION);
	Serial.println();

	pinMode(ledPin, OUTPUT);
	pinMode(buttonPin, INPUT);
}

// ---------------------------------------------------------------------
void loop() {
	buttonState = digitalRead(buttonPin);

	if (buttonState == HIGH) {
		digitalWrite(ledPin, HIGH);
	} else {
		digitalWrite(ledPin, LOW);
	}

	if (buttonState_before != buttonState)
		{
		Serial.println(buttonState);
		Serial.println(PROGRAM);
		Serial.println(VERSION);
		Serial.println();

		buttonState_before = buttonState;
		}
}

// ---------------------------------------------------------------------