STM32F767ZI-NUCLEO移植LWIP

最新推荐文章于 2025-01-10 18:05:02 发布

春夏冬

最新推荐文章于 2025-01-10 18:05:02 发布

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分类专栏： STM32

本文链接：https://blog.youkuaiyun.com/lllllow__/article/details/107054766

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###一、生成stm32工程

1、选择STM32F767ZI芯片
2、配置时钟源

3、配置外设（串口及网卡）

4、生成代码
配置project.png

code gengerator.png

generate code.png

###二、下载LWIP源码（http://savannah.nongnu.org/projects/lwip/）

1.下载最新版本2.1.2，其他版本亦可。
2.在STM32的工程目录下新建一个文件夹并命名为LWIP

3.将lwip的src目录下的
/api /apps /core /include /netif 拷贝到当前文件夹下

4.在keil工程新建以下文件目录，并将代码添加进去

5.添加源码路径

6.在main.c新增MPU配置及使能缓存函数

static void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct;
  
  /* Disable the MPU */
  HAL_MPU_Disable();
  
  /* Configure the MPU attributes as WT for SRAM */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x20020000;
  MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
  MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x00;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
  
  /* Configure the MPU as Normal Non Cacheable for Ethernet Buffers in the SRAM2 */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x2007C000;
  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);
  
  /* Configure the MPU as Device for Ethernet Descriptors in the SRAM2 */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x2007C000;
  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_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER2;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  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);
}

/**
  * @brief  CPU L1-Cache enable.
  * @param  None
  * @retval None
  */
static void CPU_CACHE_Enable(void)
{
  /* Enable I-Cache */
  SCB_EnableICache();

  /* Enable D-Cache */
  SCB_EnableDCache();
}

7.由于生成代码中网卡RMII引脚不对，需自行修改

void HAL_ETH_MspInit(ETH_HandleTypeDef* ethHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(ethHandle->Instance==ETH)
  { 
    __HAL_RCC_ETH_CLK_ENABLE();
  
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
		__HAL_RCC_GPIOG_CLK_ENABLE();
    /**ETH GPIO Configuration    
        RMII_REF_CLK ----------------------> PA1
        RMII_MDIO -------------------------> PA2
        RMII_MDC --------------------------> PC1
        RMII_MII_CRS_DV -------------------> PA7
        RMII_MII_RXD0 ---------------------> PC4
        RMII_MII_RXD1 ---------------------> PC5
        RMII_MII_RXER ---------------------> PG2
        RMII_MII_TX_EN --------------------> PG11
        RMII_MII_TXD0 ---------------------> PG13
        RMII_MII_TXD1 ---------------------> PB13
    */
    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_13;//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);

   /* Configure PG2, PG11, PG13 and PG14 */
   GPIO_InitStruct.Pin =  GPIO_PIN_2 | GPIO_PIN_11 | GPIO_PIN_13;
   HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

 /* Output HSE clock (25MHz) on MCO pin (PA8) to clock the PHY */
    HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_PLLCLK, RCC_MCODIV_4);
  }
}

8.在ethernetif.c添加以下代码

#if defined ( __CC_ARM   )
ETH_DMADescTypeDef  DMARxDscrTab[ETH_RXBUFNB] __attribute__((at(0x2007C000)));/* Ethernet Rx DMA Descriptors */

ETH_DMADescTypeDef  DMATxDscrTab[ETH_TXBUFNB] __attribute__((at(0x2007C080)));/* Ethernet Tx DMA Descriptors */

uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __attribute__((at(0x2007C100))); /* Ethernet Receive Buffers */

uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE] __attribute__((at(0x2007D8D0))); /* Ethernet Transmit Buffers */

#elif defined ( __ICCARM__ ) /*!< IAR Compiler */
  #pragma data_alignment=4 

#pragma location=0x2007C000
__no_init ETH_DMADescTypeDef  DMARxDscrTab[ETH_RXBUFNB];/* Ethernet Rx DMA Descriptors */

#pragma location=0x2007C080
__no_init ETH_DMADescTypeDef  DMATxDscrTab[ETH_TXBUFNB];/* Ethernet Tx DMA Descriptors */

#pragma location=0x2007C100
__no_init uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE]; /* Ethernet Receive Buffers */

#pragma location=0x2007D8D0
__no_init uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE]; /* Ethernet Transmit Buffers */

#elif defined ( __GNUC__ ) /*!< GNU Compiler */

ETH_DMADescTypeDef  DMARxDscrTab[ETH_RXBUFNB] __attribute__((section(".RxDecripSection")));/* Ethernet Rx DMA Descriptors */

ETH_DMADescTypeDef  DMATxDscrTab[ETH_TXBUFNB] __attribute__((section(".TxDescripSection")));/* Ethernet Tx DMA Descriptors */

uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __attribute__((section(".RxarraySection"))); /* Ethernet Receive Buffers */

uint8_t Tx_Buff[ETH_TXBUFNB][ETH_TX_BUF_SIZE] __attribute__((section(".TxarraySection"))); /* Ethernet Transmit Buffers */

#endif

static void low_level_init(struct netif *netif)
{ 
  uint8_t macaddress[6]= { MAC_ADDR0, MAC_ADDR1, MAC_ADDR2, MAC_ADDR3, MAC_ADDR4, MAC_ADDR5 };
  
  heth.Instance = ETH;  
  heth.Init.MACAddr = macaddress;
  heth.Init.AutoNegotiation = ETH_AUTONEGOTIATION_ENABLE;//使能自协商模式
  heth.Init.Speed = ETH_SPEED_100M;//网速100M
  heth.Init.DuplexMode = ETH_MODE_FULLDUPLEX;//全双工
  heth.Init.MediaInterface = ETH_MEDIA_INTERFACE_RMII;//RMII接口
  heth.Init.RxMode = ETH_RXPOLLING_MODE;//轮询接收
  heth.Init.ChecksumMode = ETH_CHECKSUM_BY_HARDWARE;//硬件帧校验
  heth.Init.PhyAddress = LAN8742A_PHY_ADDRESS;//PHY都中
  
  /* 配置以太网外设(GPIOs, clocks, MAC, DMA) */
  if (HAL_ETH_Init(&heth) == HAL_OK)
  {
    /* 设置NETIF连接标志*/
    netif->flags |= NETIF_FLAG_LINK_UP;
  }
	
  
	/* 设置netif连接标志 */
  netif->flags |= NETIF_FLAG_LINK_UP;
  /* 初始化tx描述符列表：链接模式 */
  HAL_ETH_DMATxDescListInit(&heth, DMATxDscrTab, &Tx_Buff[0][0], ETH_TXBUFNB);
     
  /* 初始化rx描述符列表：链接模式 */
  HAL_ETH_DMARxDescListInit(&heth, DMARxDscrTab, &Rx_Buff[0][0], ETH_RXBUFNB);
  
  /*设置netif MAC硬件地址长度*/
  netif->hwaddr_len = ETHARP_HWADDR_LEN;

  /* 设置MAC硬件地址 */
  netif->hwaddr[0] =  MAC_ADDR0;
  netif->hwaddr[1] =  MAC_ADDR1;
  netif->hwaddr[2] =  MAC_ADDR2;
  netif->hwaddr[3] =  MAC_ADDR3;
  netif->hwaddr[4] =  MAC_ADDR4;
  netif->hwaddr[5] =  MAC_ADDR5;

  /* 设置netif最大传输单位*/
  netif->mtu = 1500;

  /* 接收广播地址和ARP流量 */
  netif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP;

  /* 使能MAC和DMA发送接收 */
  HAL_ETH_Start(&heth);
}
/**
  * @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();
}

9.调用函数

int main(void)
{
  /* USER CODE BEGIN 1 */
	
  /* Configure the MPU attributes as Device memory for ETH DMA descriptors */
  MPU_Config();
  
  /* Enable the CPU Cache */
  CPU_CACHE_Enable();
	
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  //MX_ETH_Init();
  MX_USART3_UART_Init();
  /* USER CODE BEGIN 2 */
	
  /*初始化lwip*/
	lwip_init();
	printf("LAN8742A Ethernet Demo\n");
	printf("LwIP版本%s\n",LWIP_VERSION_STRING);

	printf("ping实验\n");


	//IP地址和端口可在main.h修改
	printf("IP: %d.%d.%d.%d\n",IP_ADDR0,IP_ADDR1,IP_ADDR2,IP_ADDR3);
	/* 网络接口配置 */
	Netif_Config();
	/* 报告用户网络连接状态*/
	User_notification(&gnetif);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		
		/* 从以太网中读取数据包，交给lwip处理 */
		ethernetif_input(&gnetif);
		/* 处理lwip超时 */
		sys_check_timeouts();
		
		
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
		

  }
  /* USER CODE END 3 */
}

###三、烧录验证
1、打开终端，输入ping + IP
验证成功！！！