// GPIO LED
#define RedLEDPin 4
#define GreenLEDPin 14
void setup() {
Serial.begin(115200);
// set the GPIOs
pinMode(RedLEDPin, OUTPUT);
pinMode(GreenLEDPin, OUTPUT);
}
void loop() {
// Blink both LEDs together
digitalWrite(RedLEDPin, HIGH);
digitalWrite(GreenLEDPin, HIGH);
delay(1000);
digitalWrite(RedLEDPin, LOW);
digitalWrite(GreenLEDPin, LOW);
delay(1000);
}