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STM32+W5500网络通信

2021-12-25 20:59:03 作者：互联网

STM32+W5500网络通信

板子：STM32F103C8

模块：W5500

移植系统：uc/OS-III

编译工具：Keil&STM32CubeMX

烧录工具：FlyMcu

文章目录

一、W5500&Demos

1. W5500以太网模块

Niren_W5500模块是一款基于WIZnet W5500芯片的以太网模块，是泥人电子继 Niren_W5100模块后设计的一块性能更好、性价比更高的以太网模块。模块集成硬件化TCP/IP协议:内部32K字节存储器作TX/RX
缓存:支持10/100Mbps的传输速率;支持8个独立端口同时运行;同时模块还支持3.3V或5V电源供电,5V供电时还可以输出3.3V电源,方便用户在不同的单片机系统中使用;模块与单片机系统的通讯方式是简单、方便的SPI通信。

排针标识	功能说明	接法	排针标识	功能说明
3.3V	3.3V电源输入引脚	–	5V	5V电源输入引脚	–
MISO	SPI主机输入从机输出引脚	A6	GND	电源地引脚	–
MOSI	SPI主机输出从机输入引脚	A7	RST	W5500硬件初始化引脚（低电平有效）	A15
SCS	SPI SLAVE选择引脚（低电平有效）	A4	INT	W5500中断引脚（低电平有效）	C4
SCLK	SPI时钟引脚	A5	NC	悬空	–

2. 厂家Demo测试

资料地址：

链接：https://pan.baidu.com/s/1fiWWfmWQT9CNh4EimU-Igw
提取码：1234

具体例程的调试过程请参考压缩包中NiRen_W5500模块用户手册(用Adobe Reader打开)

客户端：

服务器端：

UDP：

二、STM32+W5500+modbus协议编程

1. 工程文件下载地址

工程文件：https://github.com/Wattson1128/Embedded-System/tree/main/week15-W5500/stm32_w5500_freemodbus_v1-master

2. 源码演示

核心部分：

main.c

int main(void)
{
	unsigned char i;

	/* Initialize STM32F103 */
	System_Initialization();//系统配置
	SysTick_Init();//启动系统滴答定时器 SysTick

	/* Config W5500 */
	W5500_Configuration();//W5500配置
	Delay_ms(200);//延时等待

	/* Modbus-TCP Init */
    eMBTCPInit(MB_TCP_PORT_USE_DEFAULT); //端口依赖事件模块初始化
	Delay_ms(200); //延时等待
	
	/* Enable Modbus-TCP Stack */    
    eMBEnable();//激活协议栈	
    

    printf("\r\nModbus-TCP Start!\r\n");
    printf("IP:192.168.1.128\r\n");


	while(1)
	{
		
		i=Read_SOCK_1_Byte(0,Sn_SR);  //读W5500状态
		if(i==0)	  
		{
			do
			{
				Delay_ms(100);//延时等待
			
			}while(Socket_Listen(0)==FALSE);//设置“Socket n”为“TCP服务器模式”
		}
		else if(i==SOCK_ESTABLISHED)		 //建立TCP连接
		{
		eMBPoll();//启动modbus侦听
		BSP_LED();//线圈控制LED灯
		}
				
	}
}

W5500的配置函数

/* W5500 configuration */
void W5500_Configuration()
{
	unsigned char array[6];

	GPIO_SetBits(GPIO_W5500_RST_PORT, GPIO_W5500_RST_Pin);//上拉
	Delay_ms(100);    /*delay 100ms 使用systick 1ms时基的延时*/
    //等待以太网链路
	while((Read_1_Byte(PHYCFGR)&LINK)==0); 		/* Waiting for Ethernet Link */

	Write_1_Byte(MR, RST);//写入W5500普通寄存器一个字节
	Delay_ms(20);		/*delay 20ms */

	/* Set Gateway IP as: 192.168.1.1 */
	array[0]=192;
	array[1]=168;
	array[2]=1;
	array[3]=1;
	Write_Bytes(GAR, array, 4);//设置网关IP

	/* Set Subnet Mask as: 255.255.255.0 */
	array[0]=255;
	array[1]=255;
	array[2]=255;
	array[3]=0;
	Write_Bytes(SUBR, array, 4);//设置子网掩码

	/* Set MAC Address as: 0x48,0x53,0x00,0x57,0x55,0x00 */
	array[0]=0x48;
	array[1]=0x53;
	array[2]=0x00;
	array[3]=0x57;
	array[4]=0x55;
	array[5]=0x00;
	Write_Bytes(SHAR, array, 6);//设置MAC地址

	/* Set W5500 IP as: 192.168.1.128 */
	array[0]=192;
	array[1]=168;
	array[2]=1;
	array[3]=128;
	Write_Bytes(SIPR, array, 4);//设置W5500的IP地址
}

三、STM32+W5500的web服务

1. 项目下载：

https://github.com/Wattson1128/Embedded-System/tree/main/week15-W5500/HTTP_Server-Two_Page

2. 源码演示：

核心代码：

main.c:

int main(void)
{
	Systick_Init(72);//系统时钟初始化
	GPIO_Configuration(); //GPIO configuration
	USART1_Init(); //串口初始化：115200@8-n-1
	printf("W5500 EVB initialization over.\r\n");
	Reset_W5500();
	WIZ_SPI_Init();//W5500相关引脚配置
	printf("W5500 initialized!\r\n");
	if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_7))
	{
		DefaultSet();//出厂值
	}
	else
	{
 		get_config();//read config data from flash
	}
	printf("Firmware ver%d.%d\r\n",ConfigMsg.sw_ver[0],ConfigMsg.sw_ver[1]);
	if(ConfigMsg.debug==0) ConfigMsg.debug=1;

	set_network();//配置网络信息
	printf("Network is ready.\r\n");
	while(1)
	{
		if(ConfigMsg.JTXD_Control == 0)
		  	do_http();//开启http服务
		else
		  	JTXD_do_http();
		if(reboot_flag)
			NVIC_SystemReset();//发起系统复位请求复位单片机
//        reboot();
        
	}
}

GPIO.C

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO , ENABLE);
  // Port A output
  GPIO_InitStructure.GPIO_Pin =GPIO_Pin_0|GPIO_Pin_1| GPIO_Pin_2 |GPIO_Pin_3; 
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  
//  GPIO_ResetBits(GPIOA, GPIO_Pin_0);
//  GPIO_ResetBits(GPIOA, GPIO_Pin_1);
//  GPIO_SetBits(GPIOA, GPIO_Pin_2); // led off
//  GPIO_SetBits(GPIOA, GPIO_Pin_3); // led off
  // Port B output;
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; 
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
  GPIO_SetBits(GPIOB, GPIO_Pin_9);
  // Port C input
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
//  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
//  GPIO_Init(GPIOC, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;//控制flash
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
  GPIO_SetBits(GPIOB, GPIO_Pin_7);	
}

W5500配置：

void WIZ_SPI_Init(void)
{
	SPI_InitTypeDef   SPI_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
  RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB |RCC_APB2Periph_AFIO , ENABLE);	
  // Port B output
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; 
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
  GPIO_SetBits(GPIOB, GPIO_Pin_12);
  /* Configure SPIy pins: SCK, MISO and MOSI */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
	  /* SPI Config -------------------------------------------------------------*/
	  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
	  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
	  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
	  SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
	  SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
	  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
	  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
	  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
	  SPI_InitStructure.SPI_CRCPolynomial = 7;

	  SPI_Init(SPI2, &SPI_InitStructure);
	  SPI_Cmd(SPI2, ENABLE);
}

http请求：

void do_http(void)
{
  uint8 ch=SOCK_HTTP;
  uint16 len;

  st_http_request *http_request;
  memset(rx_buf,0x00,MAX_URI_SIZE);
  http_request = (st_http_request*)rx_buf;		// struct of http request  
  /* http service start */
  switch(getSn_SR(ch))
  {
    case SOCK_INIT:
      listen(ch);
      break;
    case SOCK_LISTEN:
      break;
    case SOCK_ESTABLISHED:
    //case SOCK_CLOSE_WAIT:
      if(getSn_IR(ch) & Sn_IR_CON)
      {
        setSn_IR(ch, Sn_IR_CON);
      }
      if ((len = getSn_RX_RSR(ch)) > 0)		
      {
        len = recv(ch, (uint8*)http_request, len); 
        *(((uint8*)http_request)+len) = 0;
        proc_http(ch, (uint8*)http_request); // request is processed
        disconnect(ch);
      }
      break;
    case SOCK_CLOSE_WAIT:   
      if ((len = getSn_RX_RSR(ch)) > 0)
      {
        //printf("close wait: %d\r\n",len);
        len = recv(ch, (uint8*)http_request, len);       
        *(((uint8*)http_request)+len) = 0;
        proc_http(ch, (uint8*)http_request); // request is processed
      }
      disconnect(ch);
      break;
    case SOCK_CLOSED:
      socket(ch, Sn_MR_TCP, 80, 0x00);    /* reinitialize the socket */
      break;
    default:
    break;
  }// end of switch
}


void JTXD_do_http(void)
{
  uint8 ch=SOCK_HTTP;
  uint16 len;

  st_http_request *http_request;
  memset(rx_buf,0x00,MAX_URI_SIZE);
  http_request = (st_http_request*)rx_buf;		// struct of http request
  
  /* http service start */
  switch(getSn_SR(ch))
  {
    case SOCK_INIT:
      listen(ch);
      break;
    case SOCK_LISTEN:

      break;
    case SOCK_ESTABLISHED:
    //case SOCK_CLOSE_WAIT:
      if(getSn_IR(ch) & Sn_IR_CON)
      {
        setSn_IR(ch, Sn_IR_CON);
      }
      if ((len = getSn_RX_RSR(ch)) > 0)		
      {
        len = recv(ch, (uint8*)http_request, len); 
        *(((uint8*)http_request)+len) = 0;
        JTXD_proc_http(ch, (uint8*)http_request); // request is processed
        disconnect(ch);
      }
      break;
    case SOCK_CLOSE_WAIT:   
      if ((len = getSn_RX_RSR(ch)) > 0)
      {
        //printf("close wait: %d\r\n",len);
        len = recv(ch, (uint8*)http_request, len);       
        *(((uint8*)http_request)+len) = 0;
        JTXD_proc_http(ch, (uint8*)http_request); // request is processed
      }
      disconnect(ch);
      break;
    case SOCK_CLOSED:                   
      socket(ch, Sn_MR_TCP, 80, 0x00);    /* reinitialize the socket */
      break;
    default:
    break;
  }// end of switch
}

四、总结

w5500通过对PB7引脚的操作来实现缺省值和flash之间的切换。

五、参考文章

天才精英2020: STM32+W5500+Freemodbus Modbus-TCP协议功能实现，工程文件下载

天才精英2020: 基于STM32_DM9000_UIP_FreeModbus的Modbus-TCP功能实现工程下载

六、源代码

https://github.com/Wattson1128/Embedded-System

标签：网络通信,ch,http,W5500,STM32,SPI,InitStructure,GPIO
来源： https://blog.csdn.net/ChenJ_1012/article/details/122148537