TCP服务器示例
#include <ESP8266WiFi.h>
int port = 8888; //Port number
WiFiServer server(port);
//Server connect to WiFi Network
const char *ssid = "xx"; //Enter your wifi SSID
const char *password = "xx"; //Enter your wifi Password
int count=0;
// 复位或上电后运行一次:
void setup() {
//在这里加入初始化相关代码,只运行一次:
Serial.begin(115200);
Serial.println();
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password); //Connect to wifi
// Wait for connection
Serial.println("Connecting to Wifi");
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
delay(500);
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
Serial.print("port:");
Serial.println(port);
server.begin();
}
//一直循环执行:
void loop() {
// 在这里加入主要程序代码,重复执行:
WiFiClient client = server.available();
if (client) {
if(client.connected())
{
Serial.println("Client Connected");
}
while(client.connected()){
while(client.available()>0){
// read data from the connected client
Serial.write(client.read());
}
//Send Data to connected client
while(Serial.available()>0)
{
client.write(Serial.read());
}
}
client.stop();
Serial.println("Client disconnected");
}
}
TCP客户端示例
#include <ESP8266WiFi.h>
#define SSID "xx" //这里改成你的wifi名字
#define PASSWD "xx"//这里改成你的wifi密码
const uint16_t port = 8888;
const char * host = "192.168.0.111"; // ip or dns
WiFiClient client;//创建一个tcp client连接
// 复位或上电后运行一次:
void setup() {
//在这里加入初始化相关代码,只运行一次:
Serial.begin(115200);
WiFi.mode(WIFI_STA);
WiFi.begin(SSID,PASSWD);
Serial.println("Wait for WiFi... ");
//等待wifi连接成功
while (WiFi.status() != WL_CONNECTED) {
Serial.print(".");
delay(500);
}
Serial.println("");
Serial.println("WiFi connected");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
delay(500);
}
//一直循环执行:
void loop() {
// 在这里加入主要程序代码,重复执行:
Serial.print("connecting to ");
Serial.println(host);
if (!client.connect(host, port)) {
Serial.println("connection failed");
Serial.println("wait 5 sec...");
delay(5000);
return;
}
// 发送数据到Tcp server
Serial.println("Send this data to server");
client.println(String("lingzhilab"));
//读取从server返回到响应数据
String line = client.readStringUntil('\r');
Serial.println(line);
Serial.println("closing connection");
client.stop();
Serial.println("wait 5 sec...");
delay(5000);
}