STM32+W5500+以太网应用开发+003_TCP服务器添加OLED（u8g2）显示状态

STM32+W5500+以太网应用开发+003_TCP服务器添加OLED（u8g2）显示状态

• 实验效果3-TCP服务器+OLED
• 1 拷贝显示驱动代码
• • 1.1 拷贝源代码
  • 1.2 将源代码添加到工程
  • 1.3 修改代码优化等级
  • 1.4 添加头文件路径
  • 1.5 修改STM32CubeMX工程
• 2 修改源代码
• • 2.1 添加头文件
  • 2.2 main函数修改
• 3 实验测试效果

实验效果3-TCP服务器+OLED

1 拷贝显示驱动代码

1.1 拷贝源代码

拷贝HARDWARE文件夹，里面包括OLED.c/.h和移植好的U8g2csrc文件夹

1.2 将源代码添加到工程

将代码分别添加到工程的User/OLED组和User/U8G2组（所有.c文件都添加）

1.3 修改代码优化等级

这里添加的好多文件用不到，需要把代码优化等级调整到Level 1

1.4 添加头文件路径

..\\HARDWARE\\oled
..\\HARDWARE\\U8g2csrc

1.5 修改STM32CubeMX工程

只需要添加3个控制引脚，SPI和W5500是共用的

2 修改源代码

源代码全部在main.c里面修改

2.1 添加头文件

/* USER CODE BEGIN Includes */
#include <string.h>
#include <stdio.h>
#include "w5500_spi.h"
#include "wizchip_conf.h"
#include "socket.h"
#include "OLED.h"
#include "u8g2_app.h"
/* USER CODE END Includes */

2.2 main函数修改

局部变量

/* USER CODE BEGIN 1 */
u8g2_t u8g2;
char draw_buf[20];
/* USER CODE END 1 */

显示初始化

/* USER CODE BEGIN 2 */
OLED_RST_Set();//OLED初始化
HAL_Delay(100);
OLED_RST_Clr();
HAL_Delay(200);
OLED_RST_Set();
OLED_Init();

u8g2Init(&u8g2);//U8G2初始化
u8g2_FirstPage(&u8g2);

printf("A simple TCP Server Application using W5500!\\r\\n");
W5500Init(); //W5500初始化
ctlnetwork(CN_SET_NETINFO, (void*)&gWIZNETINFO); //配置网络参数

wiz_PhyConf phyconf;
phyconf.by = PHY_CONFBY_SW;
phyconf.duplex = PHY_DUPLEX_FULL;
phyconf.speed = PHY_SPEED_10;
phyconf.mode = PHY_MODE_AUTONEGO;
ctlwizchip(CW_SET_PHYCONF, (void*)&phyconf); //配置PHY参数

draw_waitcable(&u8g2);//OLED提示：等待网线连接

PHYStatusCheck(); //检查网络连接状态
PrintPHYConf(); //打印PHY配置信息
printf("Simple TCP Server Application\\r\\n");
draw_waitclient(&u8g2);//OLED提示：等待客户端连接
/* USER CODE END 2 */

主循环 添加的代码部分有“OLED提示：”注释

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */

/* USER CODE BEGIN 3 */
printf("\\r\\nInitializing server socket\\r\\n");

//Parameters in order socket_id, protocol TCP or UDP, Port number, Flags=0
//Return value is socket ID on success
if(socket(1,Sn_MR_TCP,LISTEN_PORT,0)!=1)//创建一个socket：Socket号，TCP/UDP类型，端口号
{
//error
printf("Cannot create Socket!\\r\\n");
while(1);//halt here
}

//success
printf("Socket Created Successfully ! \\r\\n");

uint8_t socket_io_mode=SOCK_IO_BLOCK;

ctlsocket(1, CS_SET_IOMODE , &socket_io_mode);//set blocking IO mode

printf("IP Address is %d.%d.%d.%d\\r\\n",gWIZNETINFO.ip[0],gWIZNETINFO.ip[1],gWIZNETINFO.ip[2],gWIZNETINFO.ip[3]);
printf("Start listening on port %d ! \\r\\n",LISTEN_PORT);
printf("Waiting for a client connection. \\r\\n");

memset(draw_buf,0,20);
snprintf(draw_buf,20,"%d.%d.%d.%d:%d",gWIZNETINFO.ip[0],gWIZNETINFO.ip[1],gWIZNETINFO.ip[2],gWIZNETINFO.ip[3],LISTEN_PORT);
draw_server(&u8g2,draw_buf);//OLED提示：等待客户端连接
//Make it a passive socket (i.e. listen for connection)
if(listen(1)!=SOCK_OK)//监听端口
{//our socket id is 1 (w5500 have 8 sockets from 0-7)
//error
printf("Cannot listen on port %d",LISTEN_PORT);
while(1);
}

uint8_t sr=0x00;//socket status register

do
{
sr=getSn_SR(1);//获取Sn_SR寄存器，参数0~7
}while (sr!=SOCK_ESTABLISHED && sr!=SOCK_CLOSED);

if(sr==SOCK_CLOSED)
{
printf("Some error occurred on server socket. Please restart.\\r\\n");
while(1);
}

if(sr==SOCK_ESTABLISHED)//成功连接
{
//we come here only when a client has connected.
//Now we can read data from the socket
printf("A client connected!\\r\\n");
printf("Waiting for Client Data …!\\r\\n");
draw_conn_client(&u8g2);//OLED提示：客户端连接
while(1)
{
int len=recv(1, receive_buff, RECEIVE_BUFF_SIZE);//从连接设备读取数据到receive_buff

if(len==SOCKERR_SOCKSTATUS)
{
//client has disconnected
printf("Client has disconnected\\r\\n");
printf("*** SESSION OVER ***\\r\\n\\r\\n");
break;
}

receive_buff[len]='\\0';

printf("Received %d bytes from client\\r\\n",len);
printf("Data Received: %s", receive_buff);

// memset(draw_buf,0,20);
// snprintf(draw_buf,20,"%d.%d.%d.%d:%d",gWIZNETINFO.ip[0],gWIZNETINFO.ip[1],gWIZNETINFO.ip[2],gWIZNETINFO.ip[3],LISTEN_PORT);
draw_waitdata(&u8g2,(char *)receive_buff);//OLED提示：显示接收数据

if(strcmp((char*)receive_buff,"Who are u")==0)
{//判断接收到"Who are u"
memcpy(receive_buff,"I am role_2099!",15);//修改应答内容
len = 15;
}
//Echo the data back encloused in a [] pair
send(1,(uint8_t*)"[",1);//starting sq bracket 向客户端发送[
send(1,receive_buff,len);// the data 向客户端发送接收到的内容或者特定的回答
send(1,(uint8_t*)"]",1);//closing sq bracket 向客户端发送]

printf("\\r\\nECHO sent back to client\\r\\n");

//Look for quit message and quit if received
if(strcmp((char*)receive_buff,"QUIT")==0)
{//收到"QUIT"，端口客户端连接
printf("Received QUIT command from client\\r\\n");
printf("Disconnecting … \\r\\n");
printf("*** SESSION OVER ***\\r\\n\\r\\n");
memset(draw_buf,0,20);
snprintf(draw_buf,20,"%d.%d.%d.%d:%d",gWIZNETINFO.ip[0],gWIZNETINFO.ip[1],gWIZNETINFO.ip[2],gWIZNETINFO.ip[3],LISTEN_PORT);
draw_server(&u8g2,draw_buf);//OLED提示：等待客户端连接
disconnect(1);//disconnect from the clinet 断开客户端连接
break;//come out of while loop 退出，回到131行，重新等待客户端连接
}

}//While loop (as long as client is connected)

}//if block, client connect success
}
/* USER CODE END 3 */

3 实验测试效果