STM32中ETH驱动配置注意事项

ETH_DeInit();/* Software reset */ETH_SoftwareReset();/* Wait for software reset */while (ETH_GetSoftwareResetStatus() == SET);/* ETHERNET Configuration*//* Call ETH_StructInit if you dont like to configure all ETH_InitStructure parameter */ETH_StructInit(Ð_InitStructure);/* Fill ETH_InitStructure parametrs *//* ETH_MACCR--*///参数是否自动配置，选择disable需要自动配置默写参数　ETH_InitStructure.ETH_AutoNegotiation = ETH_AutoNegotiation_Disable;ETH_InitStructure.ETH_Watchdog = ETH_Watchdog_Disable;                            //关闭看门狗定时器，允许接收超长帧ETH_InitStructure.ETH_Jabber = ETH_Jabber_Disable;                                //关闭jabber定时器，允许发送超长帧ETH_InitStructure.ETH_InterFrameGap = ETH_InterFrameGap_40Bit;          　　　　　　//发送帧间间隙ETH_InitStructure.ETH_Speed = ETH_Speed_100M;                                     //快速以太网速度ETH_InitStructure.ETH_LoopbackMode = ETH_LoopbackMode_Disable;                    //不启用自循环模式ETH_InitStructure.ETH_Mode = ETH_Mode_FullDuplex;                                 //全双工模式/*自动填充/CRC剥离处理不执行，转发所有帧*/ETH_InitStructure.ETH_AutomaticPadCRCStrip = ETH_AutomaticPadCRCStrip_Disable;   #if CHECKSUM_BY_HARDWARE　ETH_InitStructure.ETH_ChecksumOffload = ETH_ChecksumOffload_Enable; 　　　　　　　　　　　　　　 //IPV4头文件硬件校验#endif/* ETH_MACFFR-*/　ETH_InitStructure.ETH_ReceiveAll = ETH_ReceiveAll_Disable;                                   //MAC过滤只接受通过源目的地址的数据ETH_InitStructure.ETH_SourceAddrFilter = ETH_SourceAddrFilter_Normal_Enable;                 //MAC过滤源地址错误帧？ETH_InitStructure.ETH_PassControlFrames = ETH_PassControlFrames_BlockAll;                    //MAC不转发任何控制帧ETH_InitStructure.ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Enable;        //接收广播帧ETH_InitStructure.ETH_DestinationAddrFilter = ETH_DestinationAddrFilter_Normal;              //目的地址过滤结果正常ETH_InitStructure.ETH_PromiscuousMode = ETH_PromiscuousMode_Disable;                         //混杂模式，启用帧过滤ETH_InitStructure.ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_Perfect;             //过滤器正常工作，不传送控制帧ETH_InitStructure.ETH_UnicastFramesFilter = ETH_UnicastFramesFilter_Perfect;                 //单播帧目的地址完美过滤/*   DMA  ETH_DMAOMR --*/  /* When we use the Checksum offload feature, we need to enable the Store and Forward mode: the store and forward guarantee that a whole frame is stored in the FIFO, so the MAC can insert/verify the checksum, if the checksum is OK the DMA can handle the frame otherwise the frame is dropped *//*丢弃校验错误帧不执行(因为未进行硬件校验)*/ETH_InitStructure.ETH_DropTCPIPChecksumErrorFrame = ETH_DropTCPIPChecksumErrorFrame_Disable;ETH_InitStructure.ETH_ReceiveStoreForward = ETH_ReceiveStoreForward_Disable;              //接收数据超过阈值转发ETH_InitStructure.ETH_FlushReceivedFrame = ETH_FlushReceivedFrame_Enable;                 //描述符被占用和接收FIFO不可用时清空FIFO(解决堵塞)ETH_InitStructure.ETH_TransmitStoreForward = ETH_TransmitStoreForward_Disable;            //发送数据完整帧转发ETH_InitStructure.ETH_TransmitThresholdControl = ETH_TransmitThresholdControl_64Bytes;    //发送阈值为64BytesETH_InitStructure.ETH_ForwardErrorFrames = ETH_ForwardErrorFrames_Disable;                //接收FIFO丢弃所有错误帧/*接收FIFO上传长度不够的好帧*/　　ETH_InitStructure.ETH_ForwardUndersizedGoodFrames = ETH_ForwardUndersizedGoodFrames_Enable;  　　ETH_InitStructure.ETH_ReceiveThresholdControl = ETH_ReceiveThresholdControl_64Bytes;       //接收阈值为64BytesETH_InitStructure.ETH_SecondFrameOperate = ETH_SecondFrameOperate_Enable;                  //DMA直接发送第二个帧，不需要之前帧/*   DMA  ETH_DMABMR --*/      ETH_InitStructure.ETH_AddressAlignedBeats = ETH_AddressAlignedBeats_Enable;                //传输地址对齐ETH_InitStructure.ETH_FixedBurst = ETH_FixedBurst_Enable;                                  //固定的突发ETH_InitStructure.ETH_RxDMABurstLength = ETH_RxDMABurstLength_32Beat;                              ETH_InitStructure.ETH_TxDMABurstLength = ETH_TxDMABurstLength_32Beat;ETH_InitStructure.ETH_DMAArbitration = ETH_DMAArbitration_RoundRobin_RxTx_2_1;             //发送和接收比例(上传数据时重要) 2:1/* Configure Ethernet */ETH_Init(Ð_InitStructure, DP83848_PHY_ADDRESS);/* Enable the Ethernet Rx Interrupt  仅开启接收中断*/ETH_DMAITConfig(ETH_DMA_IT_NIS  ETH_DMA_IT_R, ENABLE);