diff --git a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
index e51908568..e09bd5ba3 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
@@ -8,6 +8,15 @@ Configuration Variables
 
     uint8_t receiver_mac[ESP_NOW_ETH_ALEN]  = {0xe4, 0xb0, 0x63, 0x17, 0x9e, 0x44};
 
+Receiving Data
+--------------
+
+.. code-block:: c
+
+    void onDataReceived (const uint8_t *mac_addr, const uint8_t *data, uint8_t data_len) {
+        ESP_LOGI(TAG, "Data received from: %02x:%02x:%02x:%02x:%02x:%02x, len=%d", mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5], data_len);
+        memcpy(&buf, data, sizeof(buf));
+    }
 
 Data Encapsulation
 ------------------