一、W5500模块介绍
建议看这位博主的文章,很详细:
https://blog.csdn.net/lin_strong/article/details/82222068
二、Stm32CubeMx配置
1、RCC开启外部高速时钟(略)
2、配置STLink调试口(略)
3、配置串口方便调试输出(略)
4、配置工程名、生成路径,之后生成工程(略)
(1-4步的基础配置可以参考前面的文章《STM32基础工程模板创建》)
5、SPI 配置,配置PA4为CS片选引脚
6、配置PB4为W5500的RST引脚,PB5为INT引脚
三、Keil代码编写
1、添加W5500驱动代码到工程(添加方法不赘述,驱动代码可以在官网找)
2、在工程中增加代码
(1)MyUDP.h
#ifndef MYUDP_H
#define MYUDP_H
#include "MyUDP.h"
#include "main.h"
#include "w5500.h"
#include "socket.h"
#include "wizchip_conf.h"
#include "spi.h"
#include <string.h> // memcmp
#define SOCK_UDPS 2 //定义socket号
extern uint8_t buff[128]; //定义缓冲区
extern uint8_t UDP_send_buff[128]; //定义UDP发送缓冲区
extern uint8_t remote_ip[4]; //远程IP地址
extern uint16_t remote_port; //远程端口号
void UDPinit(void);
void do_udp(void);
void UDP_send(uint8_t* data,uint8_t len);
void Analysis(uint8_t *buf);
#endif // MYUDP_H
(2)MyUDP.c
#include "MyUDP.h"
#include "main.h"
#include "w5500.h"
#include "socket.h"
#include "wizchip_conf.h"
#include "spi.h"
#include <string.h> // memcmp
uint8_t buff[128];
uint8_t UDP_send_buff[128];
uint8_t remote_ip[4] = {192, 168, 1, 2}; //远程IP地址
uint16_t remote_port = 5002; //远程端口号
//片选
void W5500_Select(void) {
HAL_GPIO_WritePin(W5500_CS_GPIO_Port, W5500_CS_Pin, GPIO_PIN_RESET);
}
void W5500_Unselect(void) {
HAL_GPIO_WritePin(W5500_CS_GPIO_Port, W5500_CS_Pin, GPIO_PIN_SET);
}
void W5500_Restart(void) {
HAL_GPIO_WritePin(W5500_RST_GPIO_Port, W5500_RST_Pin, GPIO_PIN_RESET);
HAL_Delay(1); // delay 1ms
HAL_GPIO_WritePin(W5500_RST_GPIO_Port, W5500_RST_Pin, GPIO_PIN_SET);
HAL_Delay(1600); // delay 1600ms
}
void W5500_ReadBuff(uint8_t* buff, uint16_t len) {
HAL_SPI_Receive(&hspi1, buff, len, HAL_MAX_DELAY);
}
void W5500_WriteBuff(uint8_t* buff, uint16_t len) {
HAL_SPI_Transmit(&hspi1, buff, len, HAL_MAX_DELAY);
}
uint8_t W5500_ReadByte(void) {
uint8_t byte;
W5500_ReadBuff(&byte, sizeof(byte));
return byte;
}
void W5500_WriteByte(uint8_t byte) {
W5500_WriteBuff(&byte, sizeof(byte));
}
//配置W5500网络信息
wiz_NetInfo gSetNetInfo = {
.mac = {0x00, 0x08, 0xdc, 0x11, 0x11, 0x11},
.ip = {192, 168, 1, 10},
.sn = {255, 255, 255, 0},
.gw = {192, 168, 1, 1},
.dns = {144, 144, 144, 144},
.dhcp = NETINFO_STATIC};
wiz_NetInfo gGetNetInfo;
enum Status
{
Failed = 0,
Success = 1
};
/**
* @brief valid the result of set net info
* @return 1: Success
* 0: Failed
*/
uint8_t validSetNetInfoResult(wiz_NetInfo* _set, wiz_NetInfo* _get)
{
return (!memcmp(_set, _get, sizeof(wiz_NetInfo))); // if same, memcmp return 0
}
void UDPinit(void)
{
reg_wizchip_cs_cbfunc(W5500_Select, W5500_Unselect);
reg_wizchip_spi_cbfunc(W5500_ReadByte, W5500_WriteByte);
W5500_Restart(); // hardware restart through RESET pin
ctlnetwork(CN_SET_NETINFO, (void*)&gSetNetInfo); // set net info
// maybe need delay
ctlnetwork(CN_GET_NETINFO, (void*)&gGetNetInfo); // get net info
// W5500 has 8 channel, 32k buffer, 2 means 2KBytes
uint8_t buffer_size_8channel_tx_rx[16] = {2, 2, 2, 2, 2, 2, 2, 2, // 8 channel tx
2, 2, 2, 2, 2, 2, 2, 2}; // 8 channel rx
if(ctlwizchip(CW_INIT_WIZCHIP,(void*)buffer_size_8channel_tx_rx))
{
// failed
}
uint8_t sta = getSn_SR(SOCK_UDPS);
if(sta == SOCK_CLOSED)
{
socket(SOCK_UDPS, Sn_MR_UDP, 5001, 0);
}
HAL_Delay(100);
}
void do_udp(void)
{
uint16_t len=0;
switch(getSn_SR(SOCK_UDPS)) /*获取socket的状态*/
{
case SOCK_CLOSED: /*socket处于关闭状态*/
socket(SOCK_UDPS,Sn_MR_UDP,5001,0); /*初始化socket*/
break;
case SOCK_UDP: /*socket初始化完成*/
HAL_Delay(10);
if(getSn_IR(SOCK_UDPS) & Sn_IR_RECV) //检查是否有接收中断
{
setSn_IR(SOCK_UDPS, Sn_IR_RECV); /*清接收中断*/
}
if((len=getSn_RX_RSR(SOCK_UDPS))>0) /*接收到数据*/
{
recvfrom(SOCK_UDPS,buff, len, remote_ip,&remote_port); /*W5500接收计算机发送来的数据W5500接收计算机发送来的数据,并获取发送方的IP地址和端口号*/
sendto(SOCK_UDPS,buff,len-8, remote_ip, remote_port); /*W5500把接收到的数据发送*/
Analysis(buff);//分析数据
memset(buff, 0, sizeof(buff));
}
break;
}
}
void UDP_send(uint8_t* data,uint8_t len)
{
sendto(SOCK_UDPS, data, len, remote_ip, remote_port);
memset(data, 0, len);
}
//分析数据
void Analysis(uint8_t *buf)
{
}
3、修改CubeMx已生成的代码
(1)main.c
#include <stdio.h>
#include "MyUDP.h"
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_SPI1_Init();
UDPinit();
while (1)
{
do_udp();
}
}
四、硬件连接
五、运行效果
(1)、将W5500和电脑通过网线直连
(2)、给电脑配置一个192.168.1.x网段的IP
(3)、ping 192.168.1.10(W5500的IP),能ping通。再使用网络调试助手给192.186.1.10的5001端口发送数据,之后网络调试助手能收到返回的数据。
————————————————
版权声明:本文为博主原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。
原文链接:https://blog.csdn.net/m0_46295154/article/details/143492901
|
|