本文会利用W5500实现服务器，并自动分配网络IP地址，使用SPI轮询方式和SPI+DMA方式，实现网络通信
不会讲解W5500代码，只是快速搭建

一、SPI轮询方式驱动W5500

1、CubeMx配置

由于引脚没有硬件上拉电阻，所以使用内部上拉



生成工程

2、代码移植编写

复制代码文件到工程路径下：此文件可以从后面工程文件获取

修改引脚端口

为DHCP所需定时器实现回调函数调用

main.c主函数调用W550配置，并启动服务器

/* USER CODE BEGIN Header */
/********************************************************************************* @file           : main.c* @brief          : Main program body******************************************************************************* @attention** 
© Copyright (c) 2023 STMicroelectronics.* All rights reserved.
** This software component is licensed by ST under BSD 3-Clause license,* the "License"; You may not use this file except in compliance with the* License. You may obtain a copy of the License at:*                        opensource.org/licenses/BSD-3-Clause********************************************************************************/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "spi.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "w5500.h"
#include "W5500_conf.h"
#include "socket.h"
#include "utility.h"
#include "dhcp.h"
#include "tcp_demo.h"/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD *//* USER CODE END PTD *//* 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);
/* 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 *//* 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_SPI1_Init();MX_TIM6_Init();MX_USART1_UART_Init();/* USER CODE BEGIN 2 */gpio_for_w5500_config();						/*初始化MCU相关引脚*/reset_w5500();											/*硬复位W5500*/set_w5500_mac();										/*配置MAC地址*/socket_buf_init(txsize, rxsize);		/*初始化8个Socket的发送接收缓存大小*/IP_AutoSet(3500);/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */do_tcp_server();}/* USER CODE END 3 */
}

收发回显测试

收发速度35.5KB/秒

二、SPI+DMA方式驱动W5500

1、CubeMx配置

沿用上一个工程得基础直接修改



生成代码

2、代码移植编写

文件复制：

其余代码不用修改
记得把printf打印所需要得库勾选



可见接收依旧很慢
主要是发送会增加，向上位机发送数据速度测试达到200多KB/s

三、工程文件下载

21.0_W5500_所需文件
链接：https://pan.baidu.com/s/1HpFj8-_SDYefrTu02EATtg
提取码：9knm
21.1_STM32H750_W5500_SPI轮询方式
链接：https://pan.baidu.com/s/1Lc_plrbWAREKgrgDq-VhZA
提取码：5ee7
21.2_STM32H750_W5500_SPI_DMA方式
链接：https://pan.baidu.com/s/1riEKrhBvXRQbc8sNRkNS5Q
提取码：dytm