ESP32 Sender

#include <esp_now.h>
#include <WiFi.h>

uint8_t broadcastAddress[] = {0x24, 0x0A, 0xC4, 0x35, 0x3A, 0x90}; // MAC address of the receiver

void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);

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

  esp_now_peer_info_t peerInfo;
  memcpy(peerInfo.peer_addr, broadcastAddress, 6);
  peerInfo.channel = 0;
  peerInfo.encrypt = false;

  if (esp_now_add_peer(&peerInfo) != ESP_OK) {
    Serial.println("Failed to add peer");
    return;
  }
}

void loop() {
  const char *message = "Hello, ESP-NOW!";
  esp_err_t result = esp_now_send(broadcastAddress, (uint8_t *)message, strlen(message));

  if (result == ESP_OK) {
    Serial.println("Message sent successfully");
  } else {
    Serial.println("Error sending message");
  }

  delay(1000); // Send message every second
}