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HAL库版本：V1.12.1 最新版

这版CUBEmx生成的LAN8742 的驱动文件有问题，无法正常初始化，导致无法PING通。
lwip 内存池 不需要手动指定0x30040200区域，lwipopts.h已作配置

开启DCACH 和ICACH 和 D2域SRAM3 时钟

/*** @brief  The application entry point.* @retval int*/
int main(void)
{/* Initialize debug print for JlinkView */debug_print_init();/* MPU Configuration--------------------------------------------------------*/MPU_Config();debug_print("-----------------------------\r\n");debug_print("mpu config...\r\n");/* Enable the CPU Cache *//* Enable I-Cache---------------------------------------------------------*/SCB_EnableICache();/* Enable D-Cache---------------------------------------------------------*/SCB_EnableDCache();debug_print("cpu cache enable...\r\n");/* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* Configure the system clock */SystemClock_Config();debug_print("clock config...\r\n");/* Initialize all configured peripherals */MX_GPIO_Init();/* Read Board id */uint8_t id = read_board_id();debug_print("this board id:%d \r\n",id);/* LM75B init */lm75b_hw_init();/* W25Q128 init */w25q128.init();/* Init scheduler */osKernelInitialize();/* Call init function for freertos objects (in cmsis_os2.c) */freertos_init();/* Start scheduler */osKernelStart();/* We should never get here as control is now taken by the scheduler *//* Infinite loop */while (1){}
}

MPU 配置

static void MPU_Config(void)
{MPU_Region_InitTypeDef MPU_InitStruct;/* Disable the MPU */HAL_MPU_Disable();/* Configure the MPU attributes as Device not cacheablefor ETH DMA descriptors */MPU_InitStruct.Enable = MPU_REGION_ENABLE;MPU_InitStruct.BaseAddress = 0x30040000;MPU_InitStruct.Size = MPU_REGION_SIZE_256B;MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;MPU_InitStruct.Number = MPU_REGION_NUMBER0;MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;MPU_InitStruct.SubRegionDisable = 0x00;MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;HAL_MPU_ConfigRegion(&MPU_InitStruct);/* Configure the MPU attributes as Normal Non Cacheablefor LwIP RAM heap which contains the Tx buffers */MPU_InitStruct.Enable = MPU_REGION_ENABLE;MPU_InitStruct.BaseAddress = 0x30044000;MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;MPU_InitStruct.Number = MPU_REGION_NUMBER1;MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;MPU_InitStruct.SubRegionDisable = 0x00;MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;HAL_MPU_ConfigRegion(&MPU_InitStruct);/* Enable the MPU */HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}

SCT 链接文件

; *************************************************************
; *** Scatter-Loading Description File generated by uVision ***
; *************************************************************LR_IROM1 0x08000000 0x00100000  {    ; load region size_regionER_IROM1 0x08000000 0x00100000  {  ; load address = execution address*.o (RESET, +First)*(InRoot$$Sections).ANY (+RO).ANY (+XO)}RW_IRAM2 0x24000000 0x00080000  {  ; RW data.ANY (+RW +ZI)}RW_DMARxDscrTab 0x30040000 0x60 {*(.RxDecripSection)}RW_DMATxDscrTab 0x30040060 0x60 {*(.TxDecripSection)}
}

SCT文件的使用

1、
2 、

LAN8742/DP83848 Init函数

/*** @brief  Initialize the lan8742 and configure the needed hardware resources* @param  pObj: device object LAN8742_Object_t.* @retval LAN8742_STATUS_OK  if OK*         LAN8742_STATUS_ADDRESS_ERROR if cannot find device address*         LAN8742_STATUS_READ_ERROR if cannot read register*/int32_t LAN8742_Init(lan8742_Object_t *pObj){uint32_t tickstart = 0, regvalue = 0, addr = 0;int32_t status = LAN8742_STATUS_OK;if(pObj->Is_Initialized == 0){if(pObj->IO.Init != 0){/* GPIO and Clocks initialization */pObj->IO.Init();}/* for later check */pObj->DevAddr = LAN8742_MAX_DEV_ADDR + 1;/* Get the device address from special mode register */for(addr = 0; addr <= LAN8742_MAX_DEV_ADDR; addr ++){if(pObj->IO.ReadReg(addr, LAN8742_SMR, &regvalue) < 0){status = LAN8742_STATUS_READ_ERROR;/* Can't read from this device addresscontinue with next address */continue;}if((regvalue & LAN8742_SMR_PHY_ADDR) == addr){pObj->DevAddr = addr;status = LAN8742_STATUS_OK;break;}}if(pObj->DevAddr > LAN8742_MAX_DEV_ADDR){status = LAN8742_STATUS_ADDRESS_ERROR;}/* if device address is matched */if(status == LAN8742_STATUS_OK){/* set a software reset  */if(pObj->IO.WriteReg(pObj->DevAddr, LAN8742_BCR, LAN8742_BCR_SOFT_RESET) >= 0){ /* get software reset status */if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_BCR, &regvalue) >= 0){ tickstart = pObj->IO.GetTick();/* wait until software reset is done or timeout occured  */while(regvalue & LAN8742_BCR_SOFT_RESET){if((pObj->IO.GetTick() - tickstart) <= (uint32_t)500U){if(pObj->IO.ReadReg(pObj->DevAddr, LAN8742_BCR, &regvalue) < 0){ status = LAN8742_STATUS_READ_ERROR;break;}}else{status = LAN8742_STATUS_RESET_TIMEOUT;break;}} }else{status = LAN8742_STATUS_READ_ERROR;}}else{status = LAN8742_STATUS_WRITE_ERROR;}}}if(status == LAN8742_STATUS_OK){tickstart =  pObj->IO.GetTick();/* Wait for 2s to perform initialization */while((pObj->IO.GetTick() - tickstart) <= (uint32_t)2000U){}pObj->Is_Initialized = 1;}return status;}

LAN8742 / DP83848 寄存器

#define LAN8742_BCR      ((uint16_t)0x0000U)
#define LAN8742_BSR      ((uint16_t)0x0001U)
#define LAN8742_PHYI1R   ((uint16_t)0x0002U)
#define LAN8742_PHYI2R   ((uint16_t)0x0003U)
#define LAN8742_ANAR     ((uint16_t)0x0004U)
#define LAN8742_ANLPAR   ((uint16_t)0x0005U)
#define LAN8742_ANER     ((uint16_t)0x0006U)
#define LAN8742_ANNPTR   ((uint16_t)0x0007U)
#define LAN8742_ANNPRR   ((uint16_t)0x0008U)
#define LAN8742_MMDACR   ((uint16_t)0x000DU)
#define LAN8742_MMDAADR  ((uint16_t)0x000EU)
#define LAN8742_ENCTR    ((uint16_t)0x0010U)
#define LAN8742_MCSR     ((uint16_t)0x0011U)
#define LAN8742_SMR      ((uint16_t)0x0019U) /* LAN8742 为 0x0012U,我用的83848*/
#define LAN8742_TPDCR    ((uint16_t)0x0018U)
#define LAN8742_TCSR     ((uint16_t)0x0019U)
#define LAN8742_SECR     ((uint16_t)0x001AU)
#define LAN8742_SCSIR    ((uint16_t)0x001BU)
#define LAN8742_CLR      ((uint16_t)0x001CU)
#define LAN8742_ISFR     ((uint16_t)0x001DU)
#define LAN8742_IMR      ((uint16_t)0x001EU)
#define LAN8742_PHYSCSR  ((uint16_t)0x001FU)

ethernetif.c文件

/* USER CODE BEGIN Header */
/********************************************************************************* File Name          : ethernetif.c* Description        : This file provides code for the configuration*                      of the ethernetif.c MiddleWare.******************************************************************************* @attention** Copyright (c) 2024 STMicroelectronics.* All rights reserved.** This software is licensed under terms that can be found in the LICENSE file* in the root directory of this software component.* If no LICENSE file comes with this software, it is provided AS-IS.********************************************************************************/
/* USER CODE END Header *//* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "lwip/opt.h"
#include "lwip/timeouts.h"
#include "netif/ethernet.h"
#include "netif/etharp.h"
#include "lwip/ethip6.h"
#include "ethernetif.h"
#include "lan8742.h"
#include <string.h>
#include "cmsis_os.h"
#include "lwip/tcpip.h"/* Within 'USER CODE' section, code will be kept by default at each generation */
/* USER CODE BEGIN 0 *//* USER CODE END 0 *//* Private define ------------------------------------------------------------*/
/* The time to block waiting for input. */
#define TIME_WAITING_FOR_INPUT ( portMAX_DELAY )
/* USER CODE BEGIN OS_THREAD_STACK_SIZE_WITH_RTOS */
/* Stack size of the interface thread */
#define INTERFACE_THREAD_STACK_SIZE ( 350 )
/* USER CODE END OS_THREAD_STACK_SIZE_WITH_RTOS */
/* Network interface name */
#define IFNAME0 's'
#define IFNAME1 't'/* ETH Setting  */
#define ETH_DMA_TRANSMIT_TIMEOUT               ( 20U )
#define ETH_TX_BUFFER_MAX             ((ETH_TX_DESC_CNT) * 2U)
/* ETH_RX_BUFFER_SIZE parameter is defined in lwipopts.h *//* USER CODE BEGIN 1 *//* USER CODE END 1 *//* Private variables ---------------------------------------------------------*/
/*
@Note: This interface is implemented to operate in zero-copy mode only:- Rx buffers will be allocated from LwIP stack memory heap,then passed to ETH HAL driver.- Tx buffers will be allocated from LwIP stack memory heap,then passed to ETH HAL driver.@Notes:1.a. ETH DMA Rx descriptors must be contiguous, the default count is 4,to customize it please redefine ETH_RX_DESC_CNT in ETH GUI (Rx Descriptor Length)so that updated value will be generated in stm32xxxx_hal_conf.h1.b. ETH DMA Tx descriptors must be contiguous, the default count is 4,to customize it please redefine ETH_TX_DESC_CNT in ETH GUI (Tx Descriptor Length)so that updated value will be generated in stm32xxxx_hal_conf.h2.a. Rx Buffers number must be between ETH_RX_DESC_CNT and 2*ETH_RX_DESC_CNT2.b. Rx Buffers must have the same size: ETH_RX_BUFFER_SIZE, this value mustpassed to ETH DMA in the init field (heth.Init.RxBuffLen)2.c  The RX Ruffers addresses and sizes must be properly defined to be alignedto L1-CACHE line size (32 bytes).
*//* Data Type Definitions */
typedef enum
{RX_ALLOC_OK       = 0x00,RX_ALLOC_ERROR    = 0x01
} RxAllocStatusTypeDef;typedef struct
{struct pbuf_custom pbuf_custom;uint8_t buff[(ETH_RX_BUFFER_SIZE + 31) & ~31] __ALIGNED(32);
} RxBuff_t;/* Memory Pool Declaration */
#define ETH_RX_BUFFER_CNT             12U
LWIP_MEMPOOL_DECLARE(RX_POOL, ETH_RX_BUFFER_CNT, sizeof(RxBuff_t), "Zero-copy RX PBUF pool");/* Variable Definitions */
static uint8_t RxAllocStatus;#if defined ( __ICCARM__ ) /*!< IAR Compiler */#pragma location=0x30040000
ETH_DMADescTypeDef  DMARxDscrTab[ETH_RX_DESC_CNT]; /* Ethernet Rx DMA Descriptors */
#pragma location=0x30040060
ETH_DMADescTypeDef  DMATxDscrTab[ETH_TX_DESC_CNT]; /* Ethernet Tx DMA Descriptors */#elif defined ( __CC_ARM )  /* MDK ARM Compiler */__attribute__((at(0x30040000))) ETH_DMADescTypeDef  DMARxDscrTab[ETH_RX_DESC_CNT]; /* Ethernet Rx DMA Descriptors */
__attribute__((at(0x30040060))) ETH_DMADescTypeDef  DMATxDscrTab[ETH_TX_DESC_CNT]; /* Ethernet Tx DMA Descriptors */#elif defined ( __GNUC__ ) /* GNU Compiler */ETH_DMADescTypeDef DMARxDscrTab[ETH_RX_DESC_CNT] __attribute__((section(".RxDecripSection"))); /* Ethernet Rx DMA Descriptors */
ETH_DMADescTypeDef DMATxDscrTab[ETH_TX_DESC_CNT] __attribute__((section(".TxDecripSection")));   /* Ethernet Tx DMA Descriptors */#endif/* USER CODE BEGIN 2 *//* USER CODE END 2 */osSemaphoreId RxPktSemaphore = NULL;   /* Semaphore to signal incoming packets */
osSemaphoreId TxPktSemaphore = NULL;   /* Semaphore to signal transmit packet complete *//* Global Ethernet handle */
ETH_HandleTypeDef heth;
ETH_TxPacketConfig TxConfig;/* Private function prototypes -----------------------------------------------*/
int32_t ETH_PHY_IO_Init(void);
int32_t ETH_PHY_IO_DeInit (void);
int32_t ETH_PHY_IO_ReadReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t *pRegVal);
int32_t ETH_PHY_IO_WriteReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t RegVal);
int32_t ETH_PHY_IO_GetTick(void);lan8742_Object_t LAN8742;
lan8742_IOCtx_t  LAN8742_IOCtx = {ETH_PHY_IO_Init,ETH_PHY_IO_DeInit,ETH_PHY_IO_WriteReg,ETH_PHY_IO_ReadReg,ETH_PHY_IO_GetTick};/* USER CODE BEGIN 3 *//* USER CODE END 3 *//* Private functions ---------------------------------------------------------*/
void pbuf_free_custom(struct pbuf *p);/*** @brief  Ethernet Rx Transfer completed callback* @param  handlerEth: ETH handler* @retval None*/
void HAL_ETH_RxCpltCallback(ETH_HandleTypeDef *handlerEth)
{osSemaphoreRelease(RxPktSemaphore);
}
/*** @brief  Ethernet Tx Transfer completed callback* @param  handlerEth: ETH handler* @retval None*/
void HAL_ETH_TxCpltCallback(ETH_HandleTypeDef *handlerEth)
{osSemaphoreRelease(TxPktSemaphore);
}
/*** @brief  Ethernet DMA transfer error callback* @param  handlerEth: ETH handler* @retval None*/
void HAL_ETH_ErrorCallback(ETH_HandleTypeDef *handlerEth)
{if((HAL_ETH_GetDMAError(handlerEth) & ETH_DMACSR_RBU) == ETH_DMACSR_RBU){osSemaphoreRelease(RxPktSemaphore);}
}/* USER CODE BEGIN 4 *//* USER CODE END 4 *//*******************************************************************************LL Driver Interface ( LwIP stack --> ETH)
*******************************************************************************/
/*** @brief In this function, the hardware should be initialized.* Called from ethernetif_init().** @param netif the already initialized lwip network interface structure*        for this ethernetif*/
static void low_level_init(struct netif *netif)
{HAL_StatusTypeDef hal_eth_init_status = HAL_OK;
/* USER CODE BEGIN OS_THREAD_ATTR_CMSIS_RTOS_V2 */osThreadAttr_t attributes;
/* USER CODE END OS_THREAD_ATTR_CMSIS_RTOS_V2 */uint32_t duplex, speed = 0;int32_t PHYLinkState = 0;ETH_MACConfigTypeDef MACConf = {0};/* Start ETH HAL Init */uint8_t MACAddr[6] ;heth.Instance = ETH;MACAddr[0] = 0x00;MACAddr[1] = 0x80;MACAddr[2] = 0xE1;MACAddr[3] = 0x00;MACAddr[4] = 0x00;MACAddr[5] = 0x00;heth.Init.MACAddr = &MACAddr[0];heth.Init.MediaInterface = HAL_ETH_RMII_MODE;heth.Init.TxDesc = DMATxDscrTab;heth.Init.RxDesc = DMARxDscrTab;heth.Init.RxBuffLen = 1536;/* USER CODE BEGIN MACADDRESS *//* USER CODE END MACADDRESS */hal_eth_init_status = HAL_ETH_Init(&heth);memset(&TxConfig, 0 , sizeof(ETH_TxPacketConfig));TxConfig.Attributes = ETH_TX_PACKETS_FEATURES_CSUM | ETH_TX_PACKETS_FEATURES_CRCPAD;TxConfig.ChecksumCtrl = ETH_CHECKSUM_IPHDR_PAYLOAD_INSERT_PHDR_CALC;TxConfig.CRCPadCtrl = ETH_CRC_PAD_INSERT;/* End ETH HAL Init *//* Initialize the RX POOL */LWIP_MEMPOOL_INIT(RX_POOL);#if LWIP_ARP || LWIP_ETHERNET/* set MAC hardware address length */netif->hwaddr_len = ETH_HWADDR_LEN;/* set MAC hardware address */netif->hwaddr[0] =  heth.Init.MACAddr[0];netif->hwaddr[1] =  heth.Init.MACAddr[1];netif->hwaddr[2] =  heth.Init.MACAddr[2];netif->hwaddr[3] =  heth.Init.MACAddr[3];netif->hwaddr[4] =  heth.Init.MACAddr[4];netif->hwaddr[5] =  heth.Init.MACAddr[5];/* maximum transfer unit */netif->mtu = ETH_MAX_PAYLOAD;/* Accept broadcast address and ARP traffic *//* don't set NETIF_FLAG_ETHARP if this device is not an ethernet one */#if LWIP_ARPnetif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;#elsenetif->flags |= NETIF_FLAG_BROADCAST;#endif /* LWIP_ARP *//* create a binary semaphore used for informing ethernetif of frame reception */RxPktSemaphore = osSemaphoreNew(1, 0, NULL);/* create a binary semaphore used for informing ethernetif of frame transmission */TxPktSemaphore = osSemaphoreNew(1, 0, NULL);/* create the task that handles the ETH_MAC */
/* USER CODE BEGIN OS_THREAD_NEW_CMSIS_RTOS_V2 */memset(&attributes, 0x0, sizeof(osThreadAttr_t));attributes.name = "EthIf";attributes.stack_size = INTERFACE_THREAD_STACK_SIZE;attributes.priority = osPriorityRealtime;osThreadNew(ethernetif_input, netif, &attributes);
/* USER CODE END OS_THREAD_NEW_CMSIS_RTOS_V2 */
/* USER CODE BEGIN PHY_PRE_CONFIG *//* USER CODE END PHY_PRE_CONFIG *//* Set PHY IO functions */LAN8742_RegisterBusIO(&LAN8742, &LAN8742_IOCtx);/* Initialize the LAN8742 ETH PHY */LAN8742_Init(&LAN8742);if (hal_eth_init_status == HAL_OK){PHYLinkState = LAN8742_GetLinkState(&LAN8742);/* Get link state */if(PHYLinkState <= LAN8742_STATUS_LINK_DOWN){netif_set_link_down(netif);netif_set_down(netif);}else{switch (PHYLinkState){case LAN8742_STATUS_100MBITS_FULLDUPLEX:duplex = ETH_FULLDUPLEX_MODE;speed = ETH_SPEED_100M;break;case LAN8742_STATUS_100MBITS_HALFDUPLEX:duplex = ETH_HALFDUPLEX_MODE;speed = ETH_SPEED_100M;break;case LAN8742_STATUS_10MBITS_FULLDUPLEX:duplex = ETH_FULLDUPLEX_MODE;speed = ETH_SPEED_10M;break;case LAN8742_STATUS_10MBITS_HALFDUPLEX:duplex = ETH_HALFDUPLEX_MODE;speed = ETH_SPEED_10M;break;default:duplex = ETH_FULLDUPLEX_MODE;speed = ETH_SPEED_100M;break;}/* Get MAC Config MAC */HAL_ETH_GetMACConfig(&heth, &MACConf);MACConf.DuplexMode = duplex;MACConf.Speed = speed;HAL_ETH_SetMACConfig(&heth, &MACConf);HAL_ETH_Start_IT(&heth);netif_set_up(netif);netif_set_link_up(netif);/* USER CODE BEGIN PHY_POST_CONFIG *//* USER CODE END PHY_POST_CONFIG */}}else{Error_Handler();}
#endif /* LWIP_ARP || LWIP_ETHERNET *//* USER CODE BEGIN LOW_LEVEL_INIT */debug_print("ethernetif phy link state:%d\r\n",PHYLinkState);
/* USER CODE END LOW_LEVEL_INIT */
}/*** @brief This function should do the actual transmission of the packet. The packet is* contained in the pbuf that is passed to the function. This pbuf* might be chained.** @param netif the lwip network interface structure for this ethernetif* @param p the MAC packet to send (e.g. IP packet including MAC addresses and type)* @return ERR_OK if the packet could be sent*         an err_t value if the packet couldn't be sent** @note Returning ERR_MEM here if a DMA queue of your MAC is full can lead to*       strange results. You might consider waiting for space in the DMA queue*       to become available since the stack doesn't retry to send a packet*       dropped because of memory failure (except for the TCP timers).*/static err_t low_level_output(struct netif *netif, struct pbuf *p)
{uint32_t i = 0U;struct pbuf *q = NULL;err_t errval = ERR_OK;ETH_BufferTypeDef Txbuffer[ETH_TX_DESC_CNT] = {0};memset(Txbuffer, 0 , ETH_TX_DESC_CNT*sizeof(ETH_BufferTypeDef));for(q = p; q != NULL; q = q->next){if(i >= ETH_TX_DESC_CNT)return ERR_IF;Txbuffer[i].buffer = q->payload;Txbuffer[i].len = q->len;if(i>0){Txbuffer[i-1].next = &Txbuffer[i];}if(q->next == NULL){Txbuffer[i].next = NULL;}i++;}TxConfig.Length = p->tot_len;TxConfig.TxBuffer = Txbuffer;TxConfig.pData = p;pbuf_ref(p);if (HAL_ETH_Transmit_IT(&heth, &TxConfig) == HAL_OK) {while(osSemaphoreAcquire(TxPktSemaphore, TIME_WAITING_FOR_INPUT)!=osOK){}HAL_ETH_ReleaseTxPacket(&heth);} else {pbuf_free(p);}return errval;
}/*** @brief Should allocate a pbuf and transfer the bytes of the incoming* packet from the interface into the pbuf.** @param netif the lwip network interface structure for this ethernetif* @return a pbuf filled with the received packet (including MAC header)*         NULL on memory error*/
static struct pbuf * low_level_input(struct netif *netif)
{struct pbuf *p = NULL;if(RxAllocStatus == RX_ALLOC_OK){HAL_ETH_ReadData(&heth, (void **)&p);}return p;
}/*** @brief This function should be called when a packet is ready to be read* from the interface. It uses the function low_level_input() that* should handle the actual reception of bytes from the network* interface. Then the type of the received packet is determined and* the appropriate input function is called.** @param netif the lwip network interface structure for this ethernetif*/
void ethernetif_input(void* argument)
{struct pbuf *p = NULL;struct netif *netif = (struct netif *) argument;for( ;; ){if (osSemaphoreAcquire(RxPktSemaphore, TIME_WAITING_FOR_INPUT) == osOK){do{p = low_level_input( netif );if (p != NULL){if (netif->input( p, netif) != ERR_OK ){pbuf_free(p);}}} while(p!=NULL);}}
}#if !LWIP_ARP
/*** This function has to be completed by user in case of ARP OFF.** @param netif the lwip network interface structure for this ethernetif* @return ERR_OK if ...*/
static err_t low_level_output_arp_off(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr)
{err_t errval;errval = ERR_OK;/* USER CODE BEGIN 5 *//* USER CODE END 5 */return errval;}
#endif /* LWIP_ARP *//*** @brief Should be called at the beginning of the program to set up the* network interface. It calls the function low_level_init() to do the* actual setup of the hardware.** This function should be passed as a parameter to netif_add().** @param netif the lwip network interface structure for this ethernetif* @return ERR_OK if the loopif is initialized*         ERR_MEM if private data couldn't be allocated*         any other err_t on error*/
err_t ethernetif_init(struct netif *netif)
{LWIP_ASSERT("netif != NULL", (netif != NULL));#if LWIP_NETIF_HOSTNAME/* Initialize interface hostname */netif->hostname = "lwip";
#endif /* LWIP_NETIF_HOSTNAME *//** Initialize the snmp variables and counters inside the struct netif.* The last argument should be replaced with your link speed, in units* of bits per second.*/// MIB2_INIT_NETIF(netif, snmp_ifType_ethernet_csmacd, LINK_SPEED_OF_YOUR_NETIF_IN_BPS);netif->name[0] = IFNAME0;netif->name[1] = IFNAME1;/* We directly use etharp_output() here to save a function call.* You can instead declare your own function an call etharp_output()* from it if you have to do some checks before sending (e.g. if link* is available...) */#if LWIP_IPV4
#if LWIP_ARP || LWIP_ETHERNET
#if LWIP_ARPnetif->output = etharp_output;
#else/* The user should write its own code in low_level_output_arp_off function */netif->output = low_level_output_arp_off;
#endif /* LWIP_ARP */
#endif /* LWIP_ARP || LWIP_ETHERNET */
#endif /* LWIP_IPV4 */#if LWIP_IPV6netif->output_ip6 = ethip6_output;
#endif /* LWIP_IPV6 */netif->linkoutput = low_level_output;/* initialize the hardware */low_level_init(netif);return ERR_OK;
}/*** @brief  Custom Rx pbuf free callback* @param  pbuf: pbuf to be freed* @retval None*/
void pbuf_free_custom(struct pbuf *p)
{struct pbuf_custom* custom_pbuf = (struct pbuf_custom*)p;LWIP_MEMPOOL_FREE(RX_POOL, custom_pbuf);/* If the Rx Buffer Pool was exhausted, signal the ethernetif_input task to* call HAL_ETH_GetRxDataBuffer to rebuild the Rx descriptors. */if (RxAllocStatus == RX_ALLOC_ERROR){RxAllocStatus = RX_ALLOC_OK;osSemaphoreRelease(RxPktSemaphore);}
}/* USER CODE BEGIN 6 *//**
* @brief  Returns the current time in milliseconds
*         when LWIP_TIMERS == 1 and NO_SYS == 1
* @param  None
* @retval Current Time value
*/
u32_t sys_now(void)
{return HAL_GetTick();
}/* USER CODE END 6 *//*** @brief  Initializes the ETH MSP.* @param  ethHandle: ETH handle* @retval None*/void HAL_ETH_MspInit(ETH_HandleTypeDef* ethHandle)
{GPIO_InitTypeDef GPIO_InitStruct = {0};if(ethHandle->Instance==ETH){/* USER CODE BEGIN ETH_MspInit 0 *//* USER CODE END ETH_MspInit 0 *//* Enable Peripheral clock */__HAL_RCC_ETH1MAC_CLK_ENABLE();__HAL_RCC_ETH1TX_CLK_ENABLE();__HAL_RCC_ETH1RX_CLK_ENABLE();__HAL_RCC_GPIOC_CLK_ENABLE();__HAL_RCC_GPIOA_CLK_ENABLE();__HAL_RCC_GPIOB_CLK_ENABLE();/**ETH GPIO ConfigurationPC1     ------> ETH_MDCPA1     ------> ETH_REF_CLKPA2     ------> ETH_MDIOPA7     ------> ETH_CRS_DVPC4     ------> ETH_RXD0PC5     ------> ETH_RXD1PB11     ------> ETH_TX_ENPB12     ------> ETH_TXD0PB13     ------> ETH_TXD1*/GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_5;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF11_ETH;HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_7;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF11_ETH;HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13;GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;GPIO_InitStruct.Pull = GPIO_NOPULL;GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;GPIO_InitStruct.Alternate = GPIO_AF11_ETH;HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);/* Peripheral interrupt init */HAL_NVIC_SetPriority(ETH_IRQn, 6, 0);HAL_NVIC_EnableIRQ(ETH_IRQn);/* USER CODE BEGIN ETH_MspInit 1 *//* USER CODE END ETH_MspInit 1 */}
}void HAL_ETH_MspDeInit(ETH_HandleTypeDef* ethHandle)
{if(ethHandle->Instance==ETH){/* USER CODE BEGIN ETH_MspDeInit 0 *//* USER CODE END ETH_MspDeInit 0 *//* Disable Peripheral clock */__HAL_RCC_ETH1MAC_CLK_DISABLE();__HAL_RCC_ETH1TX_CLK_DISABLE();__HAL_RCC_ETH1RX_CLK_DISABLE();/**ETH GPIO ConfigurationPC1     ------> ETH_MDCPA1     ------> ETH_REF_CLKPA2     ------> ETH_MDIOPA7     ------> ETH_CRS_DVPC4     ------> ETH_RXD0PC5     ------> ETH_RXD1PB11     ------> ETH_TX_ENPB12     ------> ETH_TXD0PB13     ------> ETH_TXD1*/HAL_GPIO_DeInit(GPIOC, GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_5);HAL_GPIO_DeInit(GPIOA, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_7);HAL_GPIO_DeInit(GPIOB, GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13);/* Peripheral interrupt Deinit*/HAL_NVIC_DisableIRQ(ETH_IRQn);/* USER CODE BEGIN ETH_MspDeInit 1 *//* USER CODE END ETH_MspDeInit 1 */}
}/*******************************************************************************PHI IO Functions
*******************************************************************************/
/*** @brief  Initializes the MDIO interface GPIO and clocks.* @param  None* @retval 0 if OK, -1 if ERROR*/
int32_t ETH_PHY_IO_Init(void)
{/* We assume that MDIO GPIO configuration is already donein the ETH_MspInit() else it should be done here*//* Configure the MDIO Clock */HAL_ETH_SetMDIOClockRange(&heth);return 0;
}/*** @brief  De-Initializes the MDIO interface .* @param  None* @retval 0 if OK, -1 if ERROR*/
int32_t ETH_PHY_IO_DeInit (void)
{return 0;
}/*** @brief  Read a PHY register through the MDIO interface.* @param  DevAddr: PHY port address* @param  RegAddr: PHY register address* @param  pRegVal: pointer to hold the register value* @retval 0 if OK -1 if Error*/
int32_t ETH_PHY_IO_ReadReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t *pRegVal)
{if(HAL_ETH_ReadPHYRegister(&heth, DevAddr, RegAddr, pRegVal) != HAL_OK){return -1;}return 0;
}/*** @brief  Write a value to a PHY register through the MDIO interface.* @param  DevAddr: PHY port address* @param  RegAddr: PHY register address* @param  RegVal: Value to be written* @retval 0 if OK -1 if Error*/
int32_t ETH_PHY_IO_WriteReg(uint32_t DevAddr, uint32_t RegAddr, uint32_t RegVal)
{if(HAL_ETH_WritePHYRegister(&heth, DevAddr, RegAddr, RegVal) != HAL_OK){return -1;}return 0;
}/*** @brief  Get the time in millisecons used for internal PHY driver process.* @retval Time value*/
int32_t ETH_PHY_IO_GetTick(void)
{return HAL_GetTick();
}/*** @brief  Check the ETH link state then update ETH driver and netif link accordingly.* @retval None*/
void ethernet_link_thread(void* argument)
{ETH_MACConfigTypeDef MACConf = {0};int32_t PHYLinkState = 0;uint32_t linkchanged = 0U, speed = 0U, duplex = 0U;struct netif *netif = (struct netif *) argument;
/* USER CODE BEGIN ETH link init *//* USER CODE END ETH link init */for(;;){PHYLinkState = LAN8742_GetLinkState(&LAN8742);if(netif_is_link_up(netif) && (PHYLinkState <= LAN8742_STATUS_LINK_DOWN)){HAL_ETH_Stop_IT(&heth);netif_set_down(netif);netif_set_link_down(netif);}else if(!netif_is_link_up(netif) && (PHYLinkState > LAN8742_STATUS_LINK_DOWN)){switch (PHYLinkState){case LAN8742_STATUS_100MBITS_FULLDUPLEX:duplex = ETH_FULLDUPLEX_MODE;speed = ETH_SPEED_100M;linkchanged = 1;break;case LAN8742_STATUS_100MBITS_HALFDUPLEX:duplex = ETH_HALFDUPLEX_MODE;speed = ETH_SPEED_100M;linkchanged = 1;break;case LAN8742_STATUS_10MBITS_FULLDUPLEX:duplex = ETH_FULLDUPLEX_MODE;speed = ETH_SPEED_10M;linkchanged = 1;break;case LAN8742_STATUS_10MBITS_HALFDUPLEX:duplex = ETH_HALFDUPLEX_MODE;speed = ETH_SPEED_10M;linkchanged = 1;break;default:break;}if(linkchanged){/* Get MAC Config MAC */HAL_ETH_GetMACConfig(&heth, &MACConf);MACConf.DuplexMode = duplex;MACConf.Speed = speed;HAL_ETH_SetMACConfig(&heth, &MACConf);HAL_ETH_Start_IT(&heth);netif_set_up(netif);netif_set_link_up(netif);}}/* USER CODE BEGIN ETH link Thread core code for User BSP *//* USER CODE END ETH link Thread core code for User BSP */osDelay(100);}
}void HAL_ETH_RxAllocateCallback(uint8_t **buff)
{
/* USER CODE BEGIN HAL ETH RxAllocateCallback */struct pbuf_custom *p = LWIP_MEMPOOL_ALLOC(RX_POOL);if (p){/* Get the buff from the struct pbuf address. */*buff = (uint8_t *)p + offsetof(RxBuff_t, buff);p->custom_free_function = pbuf_free_custom;/* Initialize the struct pbuf.* This must be performed whenever a buffer's allocated because it may be* changed by lwIP or the app, e.g., pbuf_free decrements ref. */pbuf_alloced_custom(PBUF_RAW, 0, PBUF_REF, p, *buff, ETH_RX_BUFFER_SIZE);}else{RxAllocStatus = RX_ALLOC_ERROR;*buff = NULL;}
/* USER CODE END HAL ETH RxAllocateCallback */
}void HAL_ETH_RxLinkCallback(void **pStart, void **pEnd, uint8_t *buff, uint16_t Length)
{
/* USER CODE BEGIN HAL ETH RxLinkCallback */struct pbuf **ppStart = (struct pbuf **)pStart;struct pbuf **ppEnd = (struct pbuf **)pEnd;struct pbuf *p = NULL;/* Get the struct pbuf from the buff address. */p = (struct pbuf *)(buff - offsetof(RxBuff_t, buff));p->next = NULL;p->tot_len = 0;p->len = Length;/* Chain the buffer. */if (!*ppStart){/* The first buffer of the packet. */*ppStart = p;}else{/* Chain the buffer to the end of the packet. */(*ppEnd)->next = p;}*ppEnd  = p;/* Update the total length of all the buffers of the chain. Each pbuf in the chain should have its tot_len* set to its own length, plus the length of all the following pbufs in the chain. */for (p = *ppStart; p != NULL; p = p->next){p->tot_len += Length;}/* Invalidate data cache because Rx DMA's writing to physical memory makes it stale. */SCB_InvalidateDCache_by_Addr((uint32_t *)buff, Length);/* USER CODE END HAL ETH RxLinkCallback */
}void HAL_ETH_TxFreeCallback(uint32_t * buff)
{
/* USER CODE BEGIN HAL ETH TxFreeCallback */pbuf_free((struct pbuf *)buff);/* USER CODE END HAL ETH TxFreeCallback */
}/* USER CODE BEGIN 8 *//* USER CODE END 8 */

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