Blinky for ESP32 LilyGO T-Beam

#define LED 4

void setup() {
  pinMode(LED, OUTPUT);
  digitalWrite(LED, LOW);

  Serial.begin(115200);
  Serial.println("Start blinky");
}

void loop() {
  Serial.println("LED ON");
  digitalWrite(LED, LOW);
  delay(1000);

  Serial.println("LED OFF");
  digitalWrite(LED, HIGH);
  delay(1000);
}

BOARD?=esp32:esp32:t-beam
PORT?=/dev/cu.SLAB_USBtoUART

.PHONY: default lint all flash clean

default: all flash clean

lint:
	cpplint --extensions=ino --filter=-legal/copyright *.ino

all:
	arduino-cli compile --fqbn $(BOARD) ./

flash:
	arduino-cli upload -p $(PORT) --fqbn $(BOARD)

clean:
	rm -r build