---
title: "[STM32F723 Discovery Kit] SPI driver for W5500 module pinging network"
url: "https://maker.wiznet.io/chen/projects/stm32f723-discovery-kit-spi-driver-for-w5500-module-pinging-network/"
markdown_url: "https://maker.wiznet.io/chen/projects/stm32f723-discovery-kit-spi-driver-for-w5500-module-pinging-network/md"
type: "UCC: User Created Content"
author: "TL-LED"
author_url: "https://bbs.eeworld.com.cn/thread-1262011-1-1.html"
editor: "WIZnet"
editor_url: "https://maker.wiznet.io/"
original_author: "TL-LED"
original_url: "https://bbs.eeworld.com.cn/thread-1262011-1-1.html"
license: "Apache License 2.0 (Apache-2.0)"
published: "2025-12-05"
language: "en"
likes: 0
views: 330
comments: 0
source: "WIZnet Makers (https://maker.wiznet.io/)"
---

# [STM32F723 Discovery Kit] SPI driver for W5500 module pinging network

> [STM32F723 Discovery Kit] SPI driver for W5500 module pinging network

Original author: TL-LED (source: https://bbs.eeworld.com.cn/thread-1262011-1-1.html)

## Article

| This article will teach you how to drive the W5500 module using the SPI method on the STM32F723 Discovery Kit development board to achieve network ping. I. Hardware Circuit The test interface uses PMOD's SPI2. When using this interface, you need to use PMOD_SEL_0 and PMOD_SEL_1 to switch the interface function.![](https://maker.wiznet.io/upload/ckeditor5/206448191%5F1764935039%2Ejpg) Hardware Connection Diagram ![](https://maker.wiznet.io/upload/ckeditor5/206448191%5F1764935057%2Ejpg) II. Program Partial Driver Programs 2.1 spi.c This article will teach you how to drive the W5500 module using the SPI method on the STM32F723 Discovery Kit development board to achieve network ping. I. Hardware Circuit The test interface uses PMOD's SPI2. When using this interface, you need to use PMOD_SEL_0 and PMOD_SEL_1 to switch the interface function. Hardware Connection Diagram II. Program Partial Driver Programs 2.1 spi.c ```c
#include "main.h"
#include "spi/spi.h"
SPI_HandleTypeDef hspi2;
void init_spi(void)
{
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    
    __HAL_RCC_SPI2_CLK_ENABLE();
    __HAL_RCC_GPIOI_CLK_ENABLE();
    __HAL_RCC_GPIOH_CLK_ENABLE();
    
    /**SPI1 GPIO Configuration
    PI3     ------> SPI2_MOSI
    PI2     ------> SPI2_MISO
    PI1     ------> SPI2_SCK
    */
    GPIO_InitStruct.Pin = GPIO_PIN_3 | GPIO_PIN_2 | GPIO_PIN_1;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
    
    //PH15  ----> PMOD_SEL_0
    //PI10  ----> PMOD_SEL_1
    GPIO_InitStruct.Pin = GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
    
    GPIO_InitStruct.Pin = GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
    
    HAL_GPIO_WritePin(GPIOH, GPIO_PIN_15, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(GPIOI, GPIO_PIN_10, GPIO_PIN_RESET);
    hspi2.Instance = SPI2;
 hspi2.Init.Mode = SPI_MODE_MASTER;
 hspi2.Init.Direction = SPI_DIRECTION_2LINES;
 hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
 hspi2.Init.CLKPolarity = SPI_POLARITY_HIGH;
 hspi2.Init.CLKPhase = SPI_PHASE_2EDGE;
 hspi2.Init.NSS = SPI_NSS_SOFT;
 hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
 hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
 hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
 hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
 hspi2.Init.CRCPolynomial = 7;
 hspi2.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
 hspi2.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
 if (HAL_SPI_Init(&hspi2) != HAL_OK)
 {
 }               
}
``` 2.2 w5500_conf.c The W5500 module driver part; the main modifications are in this file. ```c
/**
******************************************************************************
* [url=home.php?mod=space&uid=1307177]@File[/url] w5500_conf.c                                                                                              
* [url=home.php?mod=space&uid=252314]@version[/url] V1.2                                                  
* [url=home.php?mod=space&uid=311857]@date[/url] 2017-11-01                                 
* [url=home.php?mod=space&uid=159083]@brief[/url] ÓÃ3.5.0°æ±¾¿â½¨µÄ¹¤³ÌÄ£°å                              
* [url=home.php?mod=space&uid=1020061]@attention[/url] ÅäÖÃMCU£¬ÒÆÖ²w5500³ÌÐòÐèÒªÐ޸ĵÄÎļþ£¬ÅäÖÃw5500µÄMACºÍIPµØÖ·                                                                                                  
******************************************************************************
*/

#include <stdio.h> 
#include <string.h>
#include "w5500_conf.h"
//#include "bsp_spi_flash.h"
#include "utility.h"
#include "w5500.h"
#include "dhcp.h"
//#include "bsp_TiMbase.h"
extern SPI_HandleTypeDef hspi2;
CONFIG_MSG  ConfigMsg;                                                                    /*ÅäÖýṹÌå*/
EEPROM_MSG_STR EEPROM_MSG;                                                            /*EEPROM´æ´¢ÐÅÏ¢½á¹¹Ìå*/
/*MACµØÖ·Ê××Ö½Ú±ØÐëΪżÊý*/
/*Èç¹û¶à¿éW5500ÍøÂçÊÊÅä°åÔÚͬһÏÖ³¡¹¤×÷£¬ÇëʹÓò»Í¬µÄMACµØÖ·*/
uint8 mac[6]={0x00,0x08,0xdc,0x11,0x11,0x11};
/*¶¨ÒåĬÈÏIPÐÅÏ¢*/
uint8 local_ip[4]={192,168,1,25};                                                /*¶¨ÒåW5500ĬÈÏIPµØÖ·*/
uint8 subnet[4]={255,255,255,0};                                                /*¶¨ÒåW5500ĬÈÏ×ÓÍøÑÚÂë*/
uint8 gateway[4]={192,168,1,1};                                                    /*¶¨ÒåW5500ĬÈÏÍø¹Ø*/
uint8 dns_server[4]={114,114,114,114};                                    /*¶¨ÒåW5500ĬÈÏDNS*/
uint16 local_port=8080;                                                /*¶¨Òå±¾µØ¶Ë¿Ú*/
/*¶¨ÒåÔ¶¶ËIPÐÅÏ¢*/
uint8  remote_ip[4]={192,168,1,160};                                        /*Ô¶¶ËIPµØÖ·*/
uint16 remote_port=8080;                                                                /*Ô¶¶Ë¶Ë¿ÚºÅ*/
/*IPÅäÖ÷½·¨Ñ¡Ôñ£¬Çë×ÔÐÐÑ¡Ôñ*/
uint8  ip_from=IP_FROM_DEFINE;                
uint8  dhcp_ok=0;                                                                                /*dhcp³É¹¦»ñÈ¡IP*/
uint32 ms=0;                                                                                        /*ºÁÃë¼ÆÊý*/
uint32 dhcp_time= 0;                                                                        /*DHCPÔËÐмÆÊý*/
vu8    ntptimer = 0;                                                                        /*NPTÃë¼ÆÊý*/
/**
*@brief        ÅäÖÃW5500µÄIPµØÖ·
*@param        ÎÞ
*[url=home.php?mod=space&uid=784970]@return[/url] ÎÞ
*/
void set_w5500_ip(void)
{    
        
 /*¸´Öƶ¨ÒåµÄÅäÖÃÐÅÏ¢µ½ÅäÖýṹÌå*/
    memcpy(ConfigMsg.mac, mac, 6);
    memcpy(ConfigMsg.lip,local_ip,4);
    memcpy(ConfigMsg.sub,subnet,4);
    memcpy(ConfigMsg.gw,gateway,4);
    memcpy(ConfigMsg.dns,dns_server,4);
    if(ip_from==IP_FROM_DEFINE)    
        printf(" ʹÓö¨ÒåµÄIPÐÅÏ¢ÅäÖÃW5500:\r\n");
    
    /*ʹÓÃEEPROM´æ´¢µÄIP²ÎÊý*/    
    if(ip_from==IP_FROM_EEPROM)
    {
        /*´ÓEEPROMÖжÁÈ¡IPÅäÖÃÐÅÏ¢*/
        //read_config_from_eeprom();        
        
        /*Èç¹û¶ÁÈ¡EEPROMÖÐMACÐÅÏ¢,Èç¹ûÒÑÅäÖã¬Ôò¿ÉʹÓÃ*/        
        if( *(EEPROM_MSG.mac)==0x00&& *(EEPROM_MSG.mac+1)==0x08&&*(EEPROM_MSG.mac+2)==0xdc)        
        {
            printf(" IP from EEPROM\r\n");
            /*¸´ÖÆEEPROMÅäÖÃÐÅÏ¢µ½ÅäÖõĽṹÌå±äÁ¿*/
            memcpy(ConfigMsg.lip,EEPROM_MSG.lip, 4);                
            memcpy(ConfigMsg.sub,EEPROM_MSG.sub, 4);
            memcpy(ConfigMsg.gw, EEPROM_MSG.gw, 4);
        }
        else
        {
            printf(" EEPROMδÅäÖÃ,ʹÓö¨ÒåµÄIPÐÅÏ¢ÅäÖÃW5500,²¢Ð´ÈëEEPROM\r\n");
            //write_config_to_eeprom();    /*ʹÓÃĬÈϵÄIPÐÅÏ¢£¬²¢³õʼ»¯EEPROMÖÐÊý¾Ý*/
        }            
    }
    /*ʹÓÃDHCP»ñÈ¡IP²ÎÊý£¬Ðèµ÷ÓÃDHCP×Óº¯Êý*/        
    if(ip_from==IP_FROM_DHCP)                                
    {
        /*¸´ÖÆDHCP»ñÈ¡µÄÅäÖÃÐÅÏ¢µ½ÅäÖýṹÌå*/
        if(dhcp_ok==1)
        {
            printf(" IP from DHCP\r\n");         
            memcpy(ConfigMsg.lip,DHCP_GET.lip, 4);
            memcpy(ConfigMsg.sub,DHCP_GET.sub, 4);
            memcpy(ConfigMsg.gw,DHCP_GET.gw, 4);
            memcpy(ConfigMsg.dns,DHCP_GET.dns,4);
        }
        else
        {
            printf(" DHCP×Ó³ÌÐòδÔËÐÐ,»òÕß²»³É¹¦\r\n");
            printf(" ʹÓö¨ÒåµÄIPÐÅÏ¢ÅäÖÃW5500\r\n");
        }
    }
        
    /*ÒÔÏÂÅäÖÃÐÅÏ¢£¬¸ù¾ÝÐèҪѡÓÃ*/    
    ConfigMsg.sw_ver[0]=FW_VER_HIGH;
    ConfigMsg.sw_ver[1]=FW_VER_LOW;    
    /*½«IPÅäÖÃÐÅϢдÈëW5500ÏàÓ¦¼Ä´æÆ÷*/    
    setSUBR(ConfigMsg.sub);
    setGAR(ConfigMsg.gw);
    setSIPR(ConfigMsg.lip);
    
    getSIPR (local_ip);            
    printf(" W5500 IPµØÖ·   : %d.%d.%d.%d\r\n", local_ip[0],local_ip[1],local_ip[2],local_ip[3]);
    getSUBR(subnet);
    printf(" W5500 ×ÓÍøÑÚÂë : %d.%d.%d.%d\r\n", subnet[0],subnet[1],subnet[2],subnet[3]);
    getGAR(gateway);
    printf(" W5500 Íø¹Ø     : %d.%d.%d.%d\r\n", gateway[0],gateway[1],gateway[2],gateway[3]);
}
/**
*@brief        ÅäÖÃW5500µÄMACµØÖ·
*@param        ÎÞ
*@return    ÎÞ
*/
void set_w5500_mac(void)
{
    memcpy(ConfigMsg.mac, mac, 6);
    setSHAR(ConfigMsg.mac);    /**/
    memcpy(DHCP_GET.mac, mac, 6);
}
/**
*@brief        ÅäÖÃW5500µÄGPIO½Ó¿Ú
*@param        ÎÞ
*@return    ÎÞ
*/
void gpio_for_w5500_config(void)
{
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    
    __HAL_RCC_GPIOI_CLK_ENABLE();
    __HAL_RCC_GPIOF_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
//PI0 ----> ETH_CS
    GPIO_InitStruct.Pin = GPIO_PIN_0;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
    
    //PF11 ----> ETH_RST
    GPIO_InitStruct.Pin = GPIO_PIN_11;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
    
    //PB11 ----> ETH_INT
    GPIO_InitStruct.Pin = GPIO_PIN_11;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
    
    HAL_GPIO_WritePin(GPIOF, GPIO_PIN_11, GPIO_PIN_SET);
}
/**
*@brief        W5500ƬѡÐźÅÉèÖú¯Êý
*@param        val: Ϊ¡°0¡±±íʾƬѡ¶Ë¿ÚΪµÍ£¬Îª¡°1¡±±íʾƬѡ¶Ë¿ÚΪ¸ß
*@return    ÎÞ
*/
void wiz_cs(uint8_t val)
{
    #ifdef  STM32_SPI1
        if (val == LOW) 
        {
            GPIO_ResetBits(GPIOA, GPIO_Pin_4); 
        }
        else if (val == HIGH)
        {
            GPIO_SetBits(GPIOA, GPIO_Pin_4); 
        }
    #endif
    #ifdef STM32_SPI2
        if (val == LOW) 
        {
            HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_RESET);
        }
        else if (val == HIGH)
        {
            HAL_GPIO_WritePin(GPIOI, GPIO_PIN_0, GPIO_PIN_SET);
        }
    #endif
}
/**
*@brief        ÉèÖÃW5500µÄƬѡ¶Ë¿ÚSCSnΪµÍ
*@param        ÎÞ
*@return    ÎÞ
*/
void iinchip_csoff(void)
{
    wiz_cs(LOW);
}
/**
*@brief        ÉèÖÃW5500µÄƬѡ¶Ë¿ÚSCSnΪ¸ß
*@param        ÎÞ
*@return    ÎÞ
*/
void iinchip_cson(void)
{    
  wiz_cs(HIGH);
}
/**
*@brief        W5500¸´Î»ÉèÖú¯Êý
*@param        ÎÞ
*@return    ÎÞ
*/
void reset_w5500(void)
{
    HAL_GPIO_WritePin(GPIOF, GPIO_PIN_11, GPIO_PIN_RESET);
 delay_us(50);  
    HAL_GPIO_WritePin(GPIOF, GPIO_PIN_11, GPIO_PIN_SET);
 delay_us(50);
}
uint8_t SPI_FLASH_SendByte(uint8_t byte)
{
    u8 temp = 0;
    HAL_SPI_TransmitReceive(&hspi2,&byte,&temp,1,1000);
 return temp;
}
/**
*@brief        STM32 SPI1¶Áд8λÊý¾Ý
*@param        dat£ºÐ´ÈëµÄ8λÊý¾Ý
*@return    ÎÞ
*/
uint8  IINCHIP_SpiSendData(uint8 dat)
{
    return(SPI_FLASH_SendByte(dat));
}

/**
*@brief        дÈëÒ»¸ö8λÊý¾Ýµ½W5500
*@param        addrbsb: дÈëÊý¾ÝµÄµØÖ·
*@param   data£ºÐ´ÈëµÄ8λÊý¾Ý
*@return    ÎÞ
*/
void IINCHIP_WRITE( uint32 addrbsb,  uint8 data)
{
    iinchip_csoff();                                      
    IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);    
    IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
    IINCHIP_SpiSendData( (addrbsb & 0x000000F8) + 4);  
    IINCHIP_SpiSendData(data);                   
    iinchip_cson();                            
}
/**
*@brief        ´ÓW5500¶Á³öÒ»¸ö8λÊý¾Ý
*@param        addrbsb: дÈëÊý¾ÝµÄµØÖ·
*@param   data£º´ÓдÈëµÄµØÖ·´¦¶ÁÈ¡µ½µÄ8λÊý¾Ý
*@return    ÎÞ
*/
uint8 IINCHIP_READ(uint32 addrbsb)
{
    uint8 data = 0;
    
    //printf(" addrbsb=%x\r\n",addrbsb);
    iinchip_csoff();                            
    IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);
    IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
    IINCHIP_SpiSendData( (addrbsb & 0x000000F8))    ;
    data = IINCHIP_SpiSendData(0x00);            
    iinchip_cson();                               
    return data;    
}
/**
*@brief        ÏòW5500дÈëlen×Ö½ÚÊý¾Ý
*@param        addrbsb: дÈëÊý¾ÝµÄµØÖ·
*@param   buf£ºÐ´Èë×Ö·û´®
*@param   len£º×Ö·û´®³¤¶È
*@return    len£º·µ»Ø×Ö·û´®³¤¶È
*/
uint16 wiz_write_buf(uint32 addrbsb,uint8* buf,uint16 len)
{
    uint16 idx = 0;
    if(len == 0) printf(" Unexpected2 length 0\r\n");
    iinchip_csoff();                               
    IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);
    IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
    IINCHIP_SpiSendData( (addrbsb & 0x000000F8) + 4); 
    for(idx = 0; idx < len; idx++)
    {
        IINCHIP_SpiSendData(buf[idx]);
    }
    iinchip_cson();                           
    return len;  
}
/**
*@brief        ´ÓW5500¶Á³ölen×Ö½ÚÊý¾Ý
*@param        addrbsb: ¶ÁÈ¡Êý¾ÝµÄµØÖ·
*@param     buf£º´æ·Å¶ÁÈ¡Êý¾Ý
*@param        len£º×Ö·û´®³¤¶È
*@return    len£º·µ»Ø×Ö·û´®³¤¶È
*/
uint16 wiz_read_buf(uint32 addrbsb, uint8* buf,uint16 len)
{
 uint16 idx = 0;
 if(len == 0)
 {
   printf(" Unexpected2 length 0\r\n");
 }
 iinchip_csoff();                                
 IINCHIP_SpiSendData( (addrbsb & 0x00FF0000)>>16);
 IINCHIP_SpiSendData( (addrbsb & 0x0000FF00)>> 8);
 IINCHIP_SpiSendData( (addrbsb & 0x000000F8));    
 for(idx = 0; idx < len; idx++)                   
 {
   buf[idx] = IINCHIP_SpiSendData(0x00);
 }
 iinchip_cson();                                  
 return len;
}
/**
*@brief        дÅäÖÃÐÅÏ¢µ½EEPROM
*@param        ÎÞ
*@return    ÎÞ
*/
void write_config_to_eeprom(void)
{
    //uint16 dAddr=0;
    //ee_WriteBytes(ConfigMsg.mac,dAddr,(uint8)EEPROM_MSG_LEN);                
    //delay_ms(10);                                                                                            
}
/**
*@brief        ´ÓEEPROM¶ÁÅäÖÃÐÅÏ¢
*@param        ÎÞ
*@return    ÎÞ
*/
void read_config_from_eeprom(void)
{
    //ee_ReadBytes(EEPROM_MSG.mac,0,EEPROM_MSG_LEN);
    //delay_us(10);
}
/**
*@brief        STM32¶¨Ê±Æ÷2³õʼ»¯
*@param        ÎÞ
*@return    ÎÞ
*/
void timer2_init(void)
{
//    TIM2_Configuration();                                                                        /* TIM2 ¶¨Ê±ÅäÖà */
//    TIM2_NVIC_Configuration();                                                            /* ¶¨Ê±Æ÷µÄÖжÏÓÅÏȼ¶ */
//    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 , ENABLE);        /* TIM2 ÖØпªÊ±ÖÓ£¬¿ªÊ¼¼Æʱ */
}
/**
*@brief        dhcpÓõ½µÄ¶¨Ê±Æ÷³õʼ»¯
*@param        ÎÞ
*@return    ÎÞ
*/
void dhcp_timer_init(void)
{
 //timer2_init();
    init_tim();    
}
/**
*@brief        ntpÓõ½µÄ¶¨Ê±Æ÷³õʼ»¯
*@param        ÎÞ
*@return    ÎÞ
*/
void ntp_timer_init(void)
{
 //timer2_init();
    init_tim();    
}
/**
*@brief        ¶¨Ê±Æ÷2ÖжϺ¯Êý
*@param        ÎÞ
*@return    ÎÞ
*/
//void timer2_isr(void)
void timer2_hdl(void)
{
 ms++;    
 if(ms>=1000)
 {  
   ms=0;
   dhcp_time++;            /*DHCP¶¨Ê±¼Ó1S*/
    #ifndef    __NTP_H__
    ntptimer++;                /*NTPÖØÊÔʱ¼ä¼Ó1S*/
    #endif
 }
}
/**
*@brief        STM32ϵͳÈí¸´Î»º¯Êý
*@param        ÎÞ
*@return    ÎÞ
*/
void reboot(void)
{
//  pFunction Jump_To_Application;
//  uint32 JumpAddress;
 printf(" ϵͳÖØÆôÖÐ......\r\n");
//  JumpAddress = *(vu32*) (0x00000004);
//  Jump_To_Application = (pFunction) JumpAddress;
//  Jump_To_Application();
}
``` 2.3 main.c ```c
#include "main.h"
#include "led/led.h"
#include "delay/delay.h"
#include "key/key.h"
#include "usart/usart.h"
#include "sram/sram.h"
#include "STM32F723E-Discovery/stm32f723e_discovery_lcd.h"  
#include "STM32F723E-Discovery/stm32f723e_discovery_qspi.h"
#include "i2c/i2c.h"
#include "spi/spi.h"
#include "tim/tim.h"
#include "w5500_conf.h"
#include "w5500.h"
#include "ping.h"
static void MPU_Config(void);
static void SystemClock_Config(void);
static void CPU_CACHE_Enable(void);
int main(void)
{
    uint16_t i=0;
    uint8_t txbuf[10];
    uint8_t rxbuf[10];
    
    HAL_Init();
 MPU_Config();                    /* Configure the MPU attributes */
 CPU_CACHE_Enable();        /* Enable the CPU Cache */
 
 SystemClock_Config();    /* Configure the system clock to 216 MHz */
    delay_init(216);
    led_init();
    usart_init(115200);    
    init_spi();
    BSP_LCD_Init();
    
    gpio_for_w5500_config();
    reset_w5500();    
    PHY_check();                                                       
 set_w5500_mac();                                             
 set_w5500_ip();                                                 
    socket_buf_init(txsize, rxsize);             
    
    printf(" 应用程序执行中......\r\n");
    LED5(0);                                           
 LED6(1);
    BSP_LCD_Clear(LCD_COLOR_RED);
 while (1)
 {
        do_ping();
        if(req>=4)
        {
            close(SOCK_PING);                                     
            break;
        }            
 }
}
``` III. Program Execution 3.1 Pinging the Network ![](https://maker.wiznet.io/upload/ckeditor5/206448191%5F1764935171%2Ejpg) 3.2 Serial Port Output During Operation ![](https://maker.wiznet.io/upload/ckeditor5/206448191%5F1764935196%2Ejpg) |
| --- |

---

Source: https://maker.wiznet.io/chen/projects/stm32f723-discovery-kit-spi-driver-for-w5500-module-pinging-network/