diff --git a/duckdns/station/main/station_example_main.c b/duckdns/station/main/station_example_main.c
index 7d41645..154e1b6 100644
--- a/duckdns/station/main/station_example_main.c
+++ b/duckdns/station/main/station_example_main.c
@@ -1,3 +1,13 @@
+/**
+ * @brief Sends a JSON-formatted telemetry payload to Azure IoT Hub using HTTPS POST.
+ *
+ * This function builds and sends an HTTP POST request with telemetry data (e.g., temperature, humidity)
+ * to the Azure IoT Hub endpoint using the SAS token for authentication.
+ * 
+ * The server response is logged for debugging. The function retries connection if it fails initially.
+ */
+
+
 /*
  * station_example_main.c
  *
@@ -35,6 +45,11 @@ static const char *TAG = "ESP32_IoT_Hub";
 
 void send_data_to_azure(void *pvParameter) {
     char post_data[256];
+// Azure IoT Hub REST endpoint for sending device-to-cloud messages.
+// Format: https://<iot-hub-name>.azure-devices.net/devices/<device-id>/messages/events?api-version=<api-version>
+//
+// This example sends telemetry from device 'Simulated-ESP32' to the 'esp32-iothub' IoT Hub.
+// The 'api-version' specifies which version of the Azure IoT Hub REST API to use.
     char url[] = "https://ESP32-IoTHub.azure-devices.net/devices/Simulated-ESP32/messages/events?api-version=2020-09-30";
     
     esp_http_client_config_t config = {