diff --git a/ESP-IDF_Robot/main/blink_example_main.c b/ESP-IDF_Robot/main/blink_example_main.c
index 6451f50ca..d751f8811 100644
--- a/ESP-IDF_Robot/main/blink_example_main.c
+++ b/ESP-IDF_Robot/main/blink_example_main.c
@@ -344,6 +344,7 @@ static void espnow_task (void *pvParameter) {
     ESP_LOGI(TAG, "Start sending broadcast data");
 
     /* Start sending broadcast ESPNOW data. */
+    // Retrieve send parameters passed as reference.
     espnow_send_param_t *send_param = (espnow_send_param_t *)pvParameter;
     if (esp_now_send(send_param->dest_mac, send_param->buffer, send_param->len) != ESP_OK) {
         ESP_LOGE(TAG, "Send error");