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初始化函数rt_stm32_eth_init
rt_stm32_eth_init初始化EthHandle时的代码如下：
__HAL_RCC_ETH_CLK_ENABLE();
phy_reset();
/* ETHERNET Configuration */
EthHandle.Instance = ETH;
EthHandle.Init.MACAddr = (rt_uint8_t *)&stm32_eth_device.dev_addr[0];
EthHandle.Init.AutoNegotiation = ETH_AUTONEGOTIATION_DISABLE;
EthHandle.Init.Speed = ETH_SPEED_100M;
EthHandle.Init.DuplexMode = ETH_MODE_FULLDUPLEX;
EthHandle.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;
EthHandle.Init.RxMode = ETH_RXINTERRUPT_MODE;
#ifdef RT_LWIP_USING_HW_CHECKSUM
EthHandle.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;
#else
EthHandle.Init.ChecksumMode = ETH_CHECKSUM_BY_SOFTWARE;
#endif
HAL_ETH_DeInit(&EthHandle);然而，在bsp\stm32\libraries\STM32H7xx_HAL\STM32H7xx_HAL_Driver\Inc\stm32h7xx_hal_eth.h中关于该句柄Init成员 ETH_InitTypeDef Init; /*!< Ethernet Init Configuration */的定义如下：
typedef struct
{
uint8_t *MACAddr; /*!< MAC Address of used Hardware: must be pointer on an array of 6 bytes */
ETH_MediaInterfaceTypeDef MediaInterface; /*!< Selects the MII interface or the RMII interface. */
ETH_DMADescTypeDef *TxDesc; /*!< Provides the address of the first DMA Tx descriptor in the list */
ETH_DMADescTypeDef *RxDesc; /*!< Provides the address of the first DMA Rx descriptor in the list */
uint32_t RxBuffLen; /*!< Provides the length of Rx buffers size */
}ETH_InitTypeDef;可以看到驱动代码初始化的属性和H7对应的结构体成员不匹配，导致在H7中使用LWIP和ETH功能时报错
收发线程
rt_stm32_eth_tx和rt_stm32_eth_rx也会因为没有EthHandle.TxDesc等成员与之对应而报错：
bsp\stm32\libraries\STM32H7xx_HAL\STM32H7xx_HAL_Driver\Inc\stm32h7xx_hal_eth.h
#if (USE_HAL_ETH_REGISTER_CALLBACKS == 1)
typedef struct __ETH_HandleTypeDef
#else
typedef struct
#endif
{
ETH_TypeDef *Instance; /*!< Register base address */
ETH_InitTypeDef Init; /*!< Ethernet Init Configuration */
ETH_TxDescListTypeDef TxDescList; /*!< Tx descriptor wrapper: holds all Tx descriptors list
addresses and current descriptor index */
ETH_RxDescListTypeDef RxDescList; /*!< Rx descriptor wrapper: holds all Rx descriptors list
addresses and current descriptor index */
HAL_LockTypeDef Lock; /*!< Locking object */
__IO HAL_ETH_StateTypeDef gState; /*!< ETH state information related to global Handle management
and also related to Tx operations.
This parameter can be a value of @ref HAL_ETH_StateTypeDef */
__IO HAL_ETH_StateTypeDef RxState; /*!< ETH state information related to Rx operations.
This parameter can be a value of @ref HAL_ETH_StateTypeDef */
__IO uint32_t ErrorCode; /*!< Holds the global Error code of the ETH HAL status machine
This parameter can be a value of of @ref ETH_Error_Code */
__IO uint32_t DMAErrorCode; /*!< Holds the DMA Rx Tx Error code when a DMA AIS interrupt occurs
This parameter can be a combination of @ref ETH_DMA_Status_Flags */
__IO uint32_t MACErrorCode; /*!< Holds the MAC Rx Tx Error code when a MAC Rx or Tx status interrupt occurs
This parameter can be a combination of @ref ETH_MAC_Rx_Tx_Status */
__IO uint32_t MACWakeUpEvent; /*!< Holds the Wake Up event when the MAC exit the power down mode
This parameter can be a value of @ref ETH_MAC_Wake_Up_Event */
__IO uint32_t MACLPIEvent; /*!< Holds the LPI event when the an LPI status interrupt occurs.
This parameter can be a value of @ref ETHEx_LPI_Event */
#if (USE_HAL_ETH_REGISTER_CALLBACKS == 1)
void (* TxCpltCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH Tx Complete Callback */
void (* RxCpltCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH Rx Complete Callback */
void (* DMAErrorCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH DMA Error Callback */
void (* MACErrorCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH MAC Error Callback */
void (* PMTCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH Power Management Callback */
void (* EEECallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH EEE Callback */
void (* WakeUpCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH Wake UP Callback */
void (* MspInitCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH Msp Init callback */
void (* MspDeInitCallback) ( struct __ETH_HandleTypeDef * heth); /*!< ETH Msp DeInit callback */
#endif /* USE_HAL_ETH_REGISTER_CALLBACKS */
} ETH_HandleTypeDef;