#include <ESP8266WiFi.h>
#include <espnow.h>

// Structure example to receive data
typedef struct struct_message {
  char message[32];
} struct_message;

// Create a struct_message called myData
struct_message myData;

const int ledPin = 12; // Change to your actual LED pin

// Callback function that will be executed when data is received
void OnDataRecv(uint8_t *mac, uint8_t *incomingData, uint8_t len) {
  memcpy(&myData, incomingData, sizeof(myData));
  Serial.print("Bytes received: ");
  Serial.println(len);
  Serial.print("Message: ");
  Serial.println(myData.message);

  // Turn on or off LED based on the received message
  if (String(myData.message) == "1") {
    digitalWrite(ledPin, HIGH);
  } else if (String(myData.message) == "0") {
    digitalWrite(ledPin, LOW);
  }
}

void setup() {
  // Initialize Serial Monitor
  Serial.begin(115200);

  // Set device as a Wi-Fi Station
  WiFi.mode(WIFI_STA);

  // Init ESP-NOW
  if (esp_now_init() != 0) {
    Serial.println("Error initializing ESP-NOW");
    return;
  }

  // Register for recv CB to get recv packet info
  esp_now_set_self_role(ESP_NOW_ROLE_SLAVE);
  esp_now_register_recv_cb(OnDataRecv);

  // Initialize LED pin
  pinMode(ledPin, OUTPUT);
}

void loop() {
}