diff --git a/esp32_device/main/main.c b/esp32_device/main/main.c
index 0fc3759..a491b8c 100755
--- a/esp32_device/main/main.c
+++ b/esp32_device/main/main.c
@@ -164,7 +164,23 @@ void app_main(void)
     ESP_LOGI(TAG, "Current device certificate:\n%s", dev_certificate);
     free(dev_certificate);
 
+    // Main loop
     ESP_LOGI(TAG, "Starting main loop");
+
+    while (true)
+    {
+        if (!secure_api_sync_device())
+        {
+            ESP_LOGE(TAG, "Failed to synchronise device!");
+        }
+        else
+        {
+            ESP_LOGI(TAG, "Successfully synchronised device!");
+        }
+
+        system_sleep(10);
+    }
+
     system_sleep(120);
 
     reboot();
diff --git a/esp32_device/main/secure_api.c b/esp32_device/main/secure_api.c
index 156fd26..7200cc7 100644
--- a/esp32_device/main/secure_api.c
+++ b/esp32_device/main/secure_api.c
@@ -192,4 +192,10 @@ char *secure_api_get_dev_certificate()
     }
 
     return res;
+}
+
+void *secure_api_sync_device()
+{
+    printf("here implement sync device logic\n");
+    return NULL;
 }
\ No newline at end of file
diff --git a/esp32_device/main/secure_api.h b/esp32_device/main/secure_api.h
index 9546095..4d486f2 100644
--- a/esp32_device/main/secure_api.h
+++ b/esp32_device/main/secure_api.h
@@ -40,6 +40,13 @@ extern "C"
      */
     char *secure_api_get_dev_certificate();
 
+    /**
+     * Synchronise device with central backend
+     *
+     * Returns NULL in case of failure
+     */
+    void *secure_api_sync_device();
+
 #ifdef __cplusplus
 }
 #endif