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

// Structure to receive data
typedef struct struct_message {
    int a0;
    int a1;
    int a2;
} struct_message;

// Create a struct_message instance
struct_message myData;

// Callback function when data is received
void OnDataRecv(const uint8_t *mac, const uint8_t *incomingData, int len) {
    memcpy(&myData, incomingData, sizeof(myData));
    Serial.printf("%lu Analog_in A0: %4d, A1: %4d, A2: %4d\n", micros(), myData.a0, myData.a1, myData.a2);
}

void setup() {
    Serial.begin(115200);

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

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

    // Register callback function to receive data
    esp_now_register_recv_cb(OnDataRecv);
}

void loop() {
    // Data is received via callback, nothing needed here
}