!3 Close #I3YDWL

Merge pull request !3 from leelin/#Issue_I3YDWL

@@ -705,6 +705,13 @@ void optek_link_rx_cb(u8 *buf, u16 len, u8 bc_index, u16 pt_end_time, u8 role, u
 		//if (len)
 		//	key_value = buf[len-1];
 
+		
+		if (len < 10) 
+		{
+			// maybe the data is empty or commands/states
+			return;
+		}
+
 		memcpy(rx_data_buf,buf,len);
 		
 		if (optek_link_mode == GAME_HEADPHONE_PT_5MS_LP || optek_link_mode == GAME_HEADPHONE_PT7P5MS_T7R3E)