#include <SPI.h>
#include <LoRa.h>

#define SS 2
#define RST 3
#define DI0 4
#define B2 7

void setup() {
  pinMode(B2, OUTPUT);

  Serial.begin(115200);
  while(!Serial);

  LoRa.setPins(SS, RST, DI0);

  Serial.println("LoRa Receiver");

  if (!LoRa.begin(915E6)) {
    Serial.println("Starting LoRa failed!");
    while (1);
  }
}

void loop() {
  int packetSize = LoRa.parsePacket();
  if (packetSize) {
    int buttonState = LoRa.parseInt();
    Serial.println(buttonState);
    digitalWrite(B2, buttonState);
  }
}