1. 函数注释：
1 /**
2 ******************************************************************************
3 * @file stm32f4x7_eth.h
4 * @author MCD Application Team
5 * @version V1.1.0
6 * @date 31-July-2013
7 * @param None
8 * @retval None
9 * @brief This file contains all the functions prototypes for the Ethernet
10 * firmware driver.
11 ******************************************************************************/