diff --git a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
index 2a9e8a972..fcd3cfa75 100644
--- a/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
+++ b/ESP-IDF_Robot/tutorial/docs/source/transmitter.rst
@@ -24,12 +24,7 @@ Sending & Ecapsulating 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));
-
-        x_axis = buf.x_axis;
-        y_axis = buf.y_axis
+    void sendData (void) {
     }
 
 Main Function