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


uint8_t receiverMAC[] = {0xD4, 0xF9, 0x8D, 0x04, 0x42, 0x64}; // Change to actual receiver MAC

// Data structure to send
typedef struct struct_message {
    int value;
} struct_message;

struct_message myData;

// Callback when data is sent
void onDataSent(const uint8_t *mac_addr, esp_now_send_status_t status) {
    Serial.print("Send Status: ");
    Serial.println(status == ESP_NOW_SEND_SUCCESS ? "Success" : "Fail");
}

void setup() {
    Serial.begin(115200);
    WiFi.mode(WIFI_STA); // Set ESP32 to Station mode

    // Initialize ESP-NOW
    if (esp_now_init() != ESP_OK) {
        Serial.println("ESP-NOW Init Failed!");
        return;
    }

    esp_now_register_send_cb(onDataSent);

    // Register peer
    esp_now_peer_info_t peerInfo = {};
    memcpy(peerInfo.peer_addr, receiverMAC, 6);
    peerInfo.channel = 0;
    peerInfo.encrypt = false;

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

void loop() {
    myData.value = random(1, 100);;

    // Send data
    esp_err_t result = esp_now_send(receiverMAC, (uint8_t *)&myData, sizeof(myData));

    if (result == ESP_OK) {
        Serial.println("Sent successfully");
    } else {
        Serial.println("Error sending data");
    }

    delay(2000); // Send every 2 seconds
}