代码收藏家 STM32H7单片机通过STM32CUBEMX移植LWIP，DHCP+tcp_client与上位机通信以及网线断开重连和tcp客户端断开重连机制，通信速率测试能到34Mbps
在H743验证成功。
1、针对H743的MPU配置
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
MPU_InitStruct.BaseAddress = 0x30040000;
MPU_InitStruct.Size = MPU_REGION_SIZE_256B;
MPU_InitStruct.SubRegionDisable = 0x0;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER1;
MPU_InitStruct.BaseAddress = 0x30044000;
MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
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TX Descriptor length 4 |
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First TX Descriptor address 0x3004 0080 |
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RX Descriptor length 4 |
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First RX Descriptor address 0x3004 0000 |
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Rx Buffers Address 0x3004 0100 |
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Rx Buffers length 1536 |
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LWIP RAM HEAP POINTER (RAM Heap Pointer) 0x3004 4000 |
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MEM SIZE (Heap Memory Size) 14336 Byte(s) |
#define TCP_MSS 1460
在TCP_Server的基础上直接修改，其实和重新写一样没啥区别。
2、实现思路：
先通过DHCP获取H743的IP地址，然后TCP_client 初始化，再编连接服务器回调函数，数据接收回调函数。下位机接收指令，下位机持续发送数据，网速测试，tcp客户端中断重连。
2.1 TCP_client 初始化包含：创建TCP_client PCB，绑定本地端口和IP地址，连接服务器。
2.2 tcp客户端中断重连：通过判断clientpcb->state 客户端pcb的状态值，如果clinetpcb->state 不等于ESTABLISHED（int 04），终止PCB连接，删除PCB，重新TCP_client 初始化。
我们通过添加err_clinetpcb_state到各个功能代码区域，
在TCP_client 初始化中，连接服务器后添加第一个err_clinetpcb_state查询模块。
/*tcp_pcb的状态*/
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 0 is:%d \r\n", err_clinetpcb_state);
在连接服务器回调函数中，添加第二个err_clinetpcb_state查询模块。
/*tcp_pcb的状态*/
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 1 is:%d \r\n", err_clinetpcb_state);
在数据接收回调函数中，添加第三个err_clinetpcb_state查询模块。
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 2 is:%d \r\n", err_clinetpcb_state);/*tcp_pcb的状态*/
在while循环，客户端发送数据中，添加第四个err_clinetpcb_state查询模块。
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 3 is:%d \r\n", err_clinetpcb_state);
在while循环中，客户端断开重连中，添加第5个err_clinetpcb_state查询模块。
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 4 is:%d \r\n", err_clinetpcb_state);
2.3来做个验证。
打开网络助手，网络设置TCP Server
本地主机地址，即上位机的IP地址
本地主机端口，即上位机对应的端口
烧录程序,查看串口助手
743 ipaddress is 192.168.124.46 H743通过DHCP获取地址
bind err status is:0 客户端绑定端口和IP地址成功，
err_tcp_connect status is:0 客户端pcb连接服务器动作成功，
err_clinetpcb_state 0 is:2 此时客户端pcb连接服务器处于三次握手
tcp client connected 此时客户端pcb连接服务器已经成功，
err_clinetpcb_state 1 is:4 此时客户端pcb连接服务器已经处于稳定连接状态
我们从网络助手也看到
tcp client is connected 下位机发给上位机，此时客户端pcb连接服务器已经成功
网络助手发送：start
串口助手接收到：
err_clinetpcb_state 2 is:4 数据接收回调函数收到上位机的指令，此时客户端pcb连接服务器已经处于稳定连接状态
接收缓冲区已经释放
err_clinetpcb_state 3 is:4 客户端发送数据中，此时客户端pcb连接服务器已经处于稳定连接状态。
此时网络助手接收到下位机发来的数据。
关闭端口，再打开端口，此时串口助手
RX：err_clinetpcb_state 2 is:7 数据接收回调函数收到上位机的指令，此时客户端pcb连接服务器已经处于CLOSE_WAIT= 7,
tcp client closed 此时客户端pcb连接服务器已经处于关闭状态
err_clinetpcb_state 4 is:9 断开端口重连中，此时客户端pcb连接服务器已经处于 LAST_ACK= 9,
bind err status is:0 初始化中绑定端口和IP地址成功
err_tcp_connect status is:0 客户端pcb连接服务器动作成功，
err_clinetpcb_state 0 is:2 初始化此时客户端pcb连接服务器处于三次握手中SYN_SENT= 2,
err_clinetpcb_state 4 is:2 端口断开重新中，此时客户端pcb连接服务器处于三次握手中SYN_SENT= 2,
bind err status is:0 初始化中绑定端口和IP地址成功。
直到端口断开重连完成。
此时网络助手，
可以再次看到tcp client is connected，开始继续接收下位机发来的数据。
2.4 断开网线重连测试
串口助手，提示网线断开。网络助手，停止接收数据。
网线重新插上
网卡状态个更新，打印出IP地址。网络助手，继续接收数据。
完整代码
main.c
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2025 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.h"
#include "memorymap.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "lwip/tcp.h"
#include "string.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
#define TCP_REMOTE_PORT 8881 /* 远端端口 上位机*/
#define TCP_LOCAL_PORT 8880 /* 本地端口 STM32*/
uint32_t num;
uint8_t newipaddress[4];
err_t status_server, status_new;
/* USER CODE END PV */
char rxbuff[2048];
uint32_t address = 0;
uint32_t rx_flag = 0;//接收到上位机指令为1
uint32_t count = 0;
uint32_t init_flag=0;//初始化完成为1
err_t err_clinetpcb_state;
char sendbuffer[] = "20250106hel20250106hello20250106hello20250106hello20250106hello\r\n";
//char sendbuffer[] = "20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello\r\n";
//char sendbuffer[] = "20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello\r\n";
//char sendbuffer[] = "20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello20250106hello\r\n";
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
extern struct netif gnetif;
struct tcp_pcb *tcp_server_pcb; /* 定义一个TCP服务器控制块 */
struct tcp_pcb *tcppcbnew; /* 定义一个TCP服务器控制块 */
struct tcp_pcb *clientpcb; /* 定义一个TCP客户端控制块 */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MPU_Config(void);
int new_flag = 1;
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
int fputc(int c, FILE *stream) //重写fputc函数
{
/*
huart1是工具生成代码定义的UART1结构体，
如果以后要使用其他串口打印，只需要把这个结构体改成其他UART结构体。
*/
HAL_UART_Transmit(&huart1, (unsigned char *)&c, 1, 1000);
return 1;
}
/* USER CODE END PTD */
static err_t TCPServerCallback(void *arg, struct tcp_pcb *pcb, struct pbuf *tcp_recv_pbuf, err_t err)
{
struct pbuf *tcp_send_pbuf;
char echoString[] = "This is the client content echo:\r\n";
// rx_flag = 1;
if (tcp_recv_pbuf != NULL)
{
/* 更新接收窗口 */
tcp_recved(pcb, tcp_recv_pbuf->tot_len);
//
// /* 将接收的数据拷贝给发送结构体 */
tcp_send_pbuf = tcp_recv_pbuf;
// address=&rxbuff;
// memcpy(rxbuff, tcp_recv_pbuf->payload, 100);
tcp_write(pcb, echoString, strlen(echoString), 1);
// count = tcp_sndbuf(pcb); //查询剩余buf大小
// printf("before payload buffer is %d\r\n", count);
// printf("before payload status is %d\r\n", status);
// printf(" payload length is %d\r\n", tcp_send_pbuf->len);
/* 将接收到的数据再转发出去 */
status_server = tcp_write(pcb, tcp_send_pbuf->payload, tcp_send_pbuf->len, 1);
//
// count = tcp_sndbuf(pcb); //查询剩余buf大小
// printf("after payload buffer is %d\r\n", status);
// rx_flag = 1;
printf("after payload buffer is %d\r\n", count);
pbuf_free(tcp_recv_pbuf);
// tcp_close(pcb);
}
// else if (err == ERR_OK)
// {
// return tcp_close(pcb);
// }
return ERR_OK;
}
static err_t TCPServerAccept(void *arg, struct tcp_pcb *pcb, err_t err)
{
/* 确认监听与连接 */
// tcp_arg(pcb, mem_calloc(sizeof(struct name), 1));
// /* 发送一个建立连接的字符串 */
// tcp_write(pcb, "hello my dream \n\r",strlen("hello my dream \n\r ")-2,1);
// /* 配置接收回调函数 */
// tcp_recv(pcb, tcp_server_recv);
tcp_recv(pcb, TCPServerCallback);
return ERR_OK;
}
/*****************************************************
* 描述 ：数据接收回调函数
* 参数 ：——
* 返回 ：——
*****************************************************/
static err_t tcp_client_recv(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)
{
uint32_t i;
/*数据回传*/
//tcp_write(tpcb,p->payload,p->len,1);
err_clinetpcb_state = clientpcb->state;
// printf("err_clinetpcb_state 2 is:%d \r\n", err_clinetpcb_state);/*tcp_pcb的状态*/
if (p != NULL)
{
struct pbuf *ptmp = p;
rx_flag = 1;//接收到上位机发来的数据，可当作指令
/*打印接收到的数据*/
// printf("get msg from %d:%d:%d:%d: port:%d:\r\n", *((uint8_t *)&tpcb->remote_ip.addr),
// *((uint8_t *)&tpcb->remote_ip.addr + 1), *((uint8_t *)&tpcb->remote_ip.addr + 2),
// *((uint8_t *)&tpcb->remote_ip.addr + 3), tpcb->remote_port);
// while (ptmp != NULL)
// {
// for (i = 0; i < p->len; i++)
// {
// printf("%c", *((char *)p->payload + i));
// rx_flag = 1;
// }
// ptmp = p->next;
// }
// printf("\r\n");
// tcp_recved(tpcb, p->tot_len);
/*释放缓冲区数据*/
pbuf_free(p);
// printf("接收缓冲区已经释放\r\n");
}
else if (err == ERR_OK)
{
printf("tcp client closed\r\n");
tcp_recved(tpcb, p->tot_len);
return tcp_close(tpcb);
}
return ERR_OK;
}
/********************************************************
* 描述 ：连接服务器回调函数
* 参数：—
* 返回：—
*********************************************************/
static err_t tcp_client_connected(void *arg, struct tcp_pcb *tpcb, err_t err)
{
printf("tcp client is connected\r\n"); //tcp客户端连接成功
tcp_write(tpcb, "tcp client is connected\r\n", strlen("tcp client is connected\r\n"), 1); //反馈连接状态给客户端
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 1 is:%d \r\n", err_clinetpcb_state); /*tcp_pcb的状态*/
/*注册接收回调函数*/
tcp_recv(tpcb, tcp_client_recv);
return ERR_OK;
}
/**********************************
* 描述 ：创建tcp客户端
* 参数： 无
* 返回： 无
************************************/
void tcp_client_init(void)
{
ip_addr_t serverIp;
/*服务器IP*/
IP4_ADDR(&serverIp, 192, 168, 124, 48);
/*创建tcp客户端控制块*/
clientpcb = tcp_new();
if (clientpcb != NULL)
{
err_t err, err_tcp_connect;
/*绑定本地端口号和IP地址*/
err = tcp_bind(clientpcb, IP_ADDR_ANY, TCP_LOCAL_PORT);
printf("bind err status is:%d \r\n", err);
if (err == ERR_OK)
{
/*连接服务器*/
init_flag=1;
err_tcp_connect = tcp_connect(clientpcb, &serverIp, TCP_REMOTE_PORT, tcp_client_connected);
printf("err_tcp_connect status is:%d \r\n", err_tcp_connect);
/*tcp_pcb的状态*/
err_clinetpcb_state = clientpcb->state;
printf("err_clinetpcb_state 0 is:%d \r\n", err_clinetpcb_state);
}
else
{
printf("can not bind pcb\r\n");
memp_free(MEMP_TCP_PCB, clientpcb);
}
}
}
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MPU_Config(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MPU Configuration--------------------------------------------------------*/
MPU_Config();
/* Enable the CPU Cache */
/* Enable I-Cache---------------------------------------------------------*/
SCB_EnableICache();
/* Enable D-Cache---------------------------------------------------------*/
SCB_EnableDCache();
/* 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_USART1_UART_Init();
/* USER CODE BEGIN 2 */
//PHY芯片复位
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_SET);
HAL_Delay(50);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_RESET);
HAL_Delay(50);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_8, GPIO_PIN_SET);
HAL_Delay(50);
/* USER CODE END 2 */
MX_LWIP_Init();
printf("<<<<<<<<<<<<H743 lwip tcp client test<<<<<<<<<<<<\r\n");
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (gnetif.ip_addr.addr == 0)
{
//DHCP分配的IP地址
MX_LWIP_Process();
}
*(uint32_t *)newipaddress = (gnetif.ip_addr.addr);
if (new_flag)
{
new_flag = 0;
printf("the new ip address is configing!\r\n");
printf("743 ipaddress is %d.%d.%d.%d\r\n", newipaddress[0], newipaddress[1], newipaddress[2], newipaddress[3]);
tcp_client_init();//客户端初始化
// tcppcbnew = tcp_new();
// err_t res = tcp_bind(tcppcbnew, IP_ADDR_ANY, 8080);
// printf(" tcp_bind res is %d\r\n", res);
// /* 监听之前创建的结构体tcp_server_pcb */
// tcp_server_pcb = tcp_listen(tcppcbnew);
// /* 初始化结构体接收回调函数 */
// tcp_accept(tcp_server_pcb, TCPServerAccept);
}
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
MX_LWIP_Process();
// num++;
// HAL_Delay(1);
//
// if(num% 100000 ==0)
// {
// printf("ipaddress is %d.%d.%d.%d\r\n", newipaddress[0], newipaddress[1], newipaddress[2], newipaddress[3]);
// }
// count = tcp_sndbuf(tcppcbnew); //查询剩余buf大小
// HAL_Delay(2500);
// printf("before payload buffer is %d\r\n", count);
// if ((count / TCP_MSS) > 1)
// {
// tcp_write(tcppcbnew, sendbuffer, strlen(sendbuffer), 1);
// tcp_output(tcppcbnew);
count = tcp_sndbuf(tcppcbnew); //查询剩余buf大小
printf("after payload buffer is %d\r\n", count);
HAL_Delay(2500);
// }
// else
// {
// HAL_Delay(1);
if ((init_flag==1)&&(rx_flag == 1) && (clientpcb->state == ESTABLISHED))//客户端发送数据
{
err_clinetpcb_state = clientpcb->state;
// printf("err_clinetpcb_state 3 is:%d \r\n", err_clinetpcb_state);
// HAL_Delay(1000);
status_new = tcp_write(clientpcb, sendbuffer, strlen(sendbuffer), 1);
tcp_output(clientpcb);
// HAL_Delay(5000);
// rx_flag = 0;
}
if ((init_flag==1)&&(rx_flag == 1) && (clientpcb->state != ESTABLISHED))//客户端断开重连
{
err_clinetpcb_state = clientpcb->state;
// printf("err_clinetpcb_state 4 is:%d \r\n", err_clinetpcb_state);
/* 移除回调 */
init_flag=0;
tcp_abort(clientpcb); /* 终止连接,删除pcb控制块 */
tcp_arg(clientpcb, NULL); /* 应用程序状态设置函数为空 */
tcp_recv(clientpcb, NULL); /* 提示远程主机已经关闭连接 */
tcp_sent(clientpcb, NULL); /* 确认回调为空 */
tcp_err(clientpcb, NULL); /* 处理错误的回调函数为空 */
tcp_poll(clientpcb, NULL, 0); /* 轮询时间为零 */
tcp_client_init();
}
// count = tcp_sndbuf(tcppcbnew); //查询剩余buf大小
// printf("after payload buffer is %d\r\n", count);
// HAL_Delay(2500);
// }
// printf("after payload buffer is %d\r\n", count);
// HAL_Delay(1000);
// if(rx_flag==1)
// {
// status_new= tcp_write(tcppcbnew, sendbuffer, strlen(sendbuffer), 1);
// printf("tcppcbnew status is %d\r\n",status_new);
// rx_flag=0;
// }
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Supply configuration update enable
*/
HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
/** Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
while (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
__HAL_RCC_SYSCFG_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0);
while (!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 1;
RCC_OscInitStruct.PLL.PLLN = 120;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_3;
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
RCC_OscInitStruct.PLL.PLLFRACN = 0;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2
| RCC_CLOCKTYPE_D3PCLK1 | RCC_CLOCKTYPE_D1PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
Error_Handler();
}
__HAL_RCC_D2SRAM1_CLK_ENABLE();//对SRAM内存块时钟使能
__HAL_RCC_D2SRAM2_CLK_ENABLE();
__HAL_RCC_D2SRAM3_CLK_ENABLE();
__HAL_RCC_BKPRAM_CLKAM_ENABLE();
__HAL_RCC_D3SRAM1_CLKAM_ENABLE();
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/* MPU Configuration */
void MPU_Config(void)
{
MPU_Region_InitTypeDef MPU_InitStruct = {0};
/* Disables the MPU */
HAL_MPU_Disable();
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Enable = MPU_REGION_ENABLE;
MPU_InitStruct.Number = MPU_REGION_NUMBER0;
MPU_InitStruct.BaseAddress = 0x30040000;
MPU_InitStruct.Size = MPU_REGION_SIZE_256B;
MPU_InitStruct.SubRegionDisable = 0x0;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;// MPU_ACCESS_SHAREABLE
MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/** Initializes and configures the Region and the memory to be protected
*/
MPU_InitStruct.Number = MPU_REGION_NUMBER1;
MPU_InitStruct.BaseAddress = 0x30044000;
MPU_InitStruct.Size = MPU_REGION_SIZE_16KB;
MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL1;
MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
HAL_MPU_ConfigRegion(&MPU_InitStruct);
/* Enables the MPU */
HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
Lwip.c 中修改ethernet_link_status_updated函数
static void ethernet_link_status_updated(struct netif *netif)//网络连接状态更新
{
printf("\r\n enter netif_status_updated func\r\n");
HAL_Delay(500);
if (netif_is_up(netif))
{
printf("link available\r\n");
printf("IP:%hhu.%hhu.%hhu.%hhu\r\n", ip4_addr1_val(netif->ip_addr), ip4_addr2_val(netif->ip_addr),
ip4_addr3_val(netif->ip_addr), ip4_addr4_val(netif->ip_addr));
printf("NM:%hhu.%hhu.%hhu.%hhu\r\n", ip4_addr1_val(netif->netmask), ip4_addr2_val(netif->netmask),
ip4_addr3_val(netif->netmask), ip4_addr4_val(netif->netmask));
printf("GW:%hhu.%hhu.%hhu.%hhu\r\n", ip4_addr1_val(netif->gw), ip4_addr2_val(netif->gw),
ip4_addr3_val(netif->gw), ip4_addr4_val(netif->gw));
/* USER CODE BEGIN 5 */
/* USER CODE END 5 */
}
else /* netif is down */
{
/* USER CODE BEGIN 6 */
printf("link unavailable\r\n");
HAL_Delay(500);
/* USER CODE END 6 */
}
}
作者：zztxr-c
