官网API：http://arduino-esp8266.readthedocs.io/en/latest/esp8266wifi/readme.html

STA (客户端）手机连接路由器

S1 *简单的连接WIFI

自己当手机，连接wifi

#include <ESP8266WiFi.h>

 

void setup()

{

  Serial.begin(115200);

  Serial.println();

 

  WiFi.begin("network-name", "pass-to-network");

 

  Serial.print("Connecting");

  while (WiFi.status() != WL_CONNECTED)

  {

    delay(500);

    Serial.print(".");

  }

  Serial.println();

 

  Serial.print("Connected, IP address: ");

  Serial.println(WiFi.localIP());

}

 

void loop() {}

　　

S2 *添加WIFI备用，自动连接

/*

 *  This sketch trys to Connect to the best AP based on a given list

 *

 */

 

#include <ESP8266WiFi.h>

#include <ESP8266WiFiMulti.h>

 

ESP8266WiFiMulti wifiMulti;

 

void setup() {

    Serial.begin(115200);

    Serial.setDebugOutput(true);

    Serial.println();

    delay(10);

     

    wifiMulti.addAP("dongdong", "dongdong");

    wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2");

    wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3");

 

    Serial.println("Connecting Wifi...");

    if(wifiMulti.run() == WL_CONNECTED) {

        Serial.println("");

        Serial.println("WiFi connected");

        Serial.println("IP address: ");

        Serial.println(WiFi.localIP());

    }

}

 

void loop() {

    if(wifiMulti.run() != WL_CONNECTED) {

        Serial.println("WiFi not connected!");

        delay(1000);

    }

}

　　

S3 连接WIFI，主动设置静态地址

#include <ESP8266WiFi.h>

const char* ssid = "dongdong";

const char* password = "dongdong";

String name="DD_Station_01";

IPAddress staticIP(192,168,1,22);

IPAddress gateway(192,168,1,9);

IPAddress subnet(255,255,255,0);

void setup(void)

{

  Serial.begin(115200);

  Serial.println();

  Serial.printf("Connecting to %s\n", ssid);

  WiFi.begin(ssid, password);

  WiFi.config(staticIP, gateway, subnet);

  // 修改主机名

  WiFi.hostname(name);

  Serial.printf("New hostname: %s\n", WiFi.hostname().c_str());

  while (WiFi.status() != WL_CONNECTED)

  {

    delay(500);

    Serial.print(".");

  }

  Serial.println();

  Serial.print("Connected, IP address: ");

  Serial.println(WiFi.localIP());   // 分配的动态地址&自己设置的静态地址

  Serial.printf("SSID: %s\n", WiFi.SSID().c_str());// 连接的WIFI名

}

void loop() {}

　　

S4 http连接网络，访问网页

/*

 *  This sketch sends data via HTTP GET requests to data.sparkfun.com service.

 *

 *  You need to get streamId and privateKey at data.sparkfun.com and paste them

 *  below. Or just customize this script to talk to other HTTP servers.

 *

 */

#include <ESP8266WiFi.h>

 

const char* ssid     = "Doit";

const char* password = "doit3305";

const char* host = "data.sparkfun.com";

const char* streamId   = "ESPDUINO_STA";

const char* privateKey = "pzRb9dawqocbP9n0K0M9";

 

void setup() {

  Serial.begin(115200);

  delay(10);

  // We start by connecting to a WiFi network

  Serial.println();

  Serial.println();

  Serial.print("Connecting to ");

  Serial.println(ssid);

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {

  delay(500);

  Serial.print(".");

  }

  Serial.println("");

  Serial.println("WiFi connected"); 

  Serial.println("IP address: ");

  Serial.println(WiFi.localIP());

}

 

int value = 0;

 

void loop() {

  delay(5000);

  ++value;

  Serial.print("connecting to ");

  Serial.println(host);

  // Use WiFiClient class to create TCP connections

  WiFiClient client;

  const int httpPort = 80;

  if (!client.connect(host, httpPort)) {

    Serial.println("connection failed");

    return;

  }

  // We now create a URI for the request

  String url = "/input/";

  url += streamId;

  url += "?private_key=";

  url += privateKey;

  url += "&value=";

  url += value;

  Serial.print("Requesting URL: ");

  Serial.println(url);

  // This will send the request to the server

  client.print(String("GET ") + url + " HTTP/1.1\r\n" +"Host: " + host + "\r\n" + "Connection: close\r\n\r\n");

  delay(10);

  // Read all the lines of the reply from server and print them to Serial

  while(client.available()){

    String line = client.readStringUntil('\r');

    Serial.print(line);

  }

 

  Serial.println();

  Serial.println("closing connection");

 

}

　　

　　

AP(服务器)  自己当WIFI

A1 自己当WIFI  wifi名称+密码+ IP 不提供服务

#include <ESP8266WiFi.h>

const char *ssid = "Charlie Testing AP";

const char *password = "12345678";

void setup()

{

  Serial.begin(115200);

  Serial.println();

  Serial.print("Setting soft-AP ... ");

 

IPAddress softLocal(192,168,128,1);  

IPAddress softGateway(192,168,128,1);

IPAddress softSubnet(255,255,255,0);

WiFi.softAPConfig(softLocal, softGateway, softSubnet);  

    WiFi.softAP(ssid, password);

 

   IPAddress myIP = WiFi.softAPIP();

  Serial.print("AP IP address: ");

  Serial.println(myIP);

}

void loop()

{

  delay(3000);

}

　　

 

　　

A2 1主动设置自己的WIFI   wifi名称+密码+ IP  2建立一个服务接收手机的请求和信息 3网页返回给手机

#include <ESP8266WiFi.h>

const char *ssid = "Charlie Testing AP";

const char *password = "12345678";

WiFiServer server(80);

void setup()

{

  Serial.begin(115200);

  Serial.println();

  Serial.print("Setting soft-AP ... ");

IPAddress softLocal(192,168,128,1);  

IPAddress softGateway(192,168,128,1);

IPAddress softSubnet(255,255,255,0);

WiFi.softAPConfig(softLocal, softGateway, softSubnet);  

    WiFi.softAP(ssid, password);

   IPAddress myIP = WiFi.softAPIP();

  Serial.print("AP IP address: ");

  Serial.println(myIP);

 server.begin();

 Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());

}

void loop()

{

 WiFiClient client = server.available();

 if (client)

  {

    Serial.println("\n[Client connected]");

    while (client.connected())

    {

      // read line by line what the client (web browser) is requesting

      if (client.available())

      {

        String line = client.readStringUntil('\r');

        Serial.print(line);

        // wait for end of client's request, that is marked with an empty line

        if (line.length() == 1 && line[0] == '\n')

        {

          client.println(prepareHtmlPage());

          break;

        }

      }

    }

    delay(1); // give the web browser time to receive the data

    // close the connection:

    client.stop();

    Serial.println("[Client disonnected]");

  }

}

// prepare a web page to be send to a client (web browser)

String prepareHtmlPage()

{

  String htmlPage =

     String("HTTP/1.1 200 OK\r\n") +

            "Content-Type: text/html\r\n" +

            "Connection: close\r\n" +  // the connection will be closed after completion of the response

            "Refresh: 5\r\n" +  // refresh the page automatically every 5 sec

            "\r\n" +

            "<!DOCTYPE HTML>" +

            "<html>" +

            "Analog input:  " + String(analogRead(A0)) +

            "</html>" +

            "\r\n";

  return htmlPage;

}

　　

STA (客户端)+ AP（服务器）

#include <ESP8266WiFi.h>

#include <WiFiUdp.h>

/******************* STA 当手机 *****************************/

//设置STA网络参数

IPAddress sip(192, 168, 1, 29);//本地IP

IPAddress sip1(192, 168, 1, 1);//本地网关

IPAddress sip2(255, 255, 255, 0);//本地子网掩码

//设置STA

const char *ssid = "Netcore_wsn";

const char *password = "99325408322";

/**********************************************************/

/******************* AP 当wifi *****************************/

IPAddress xip(192, 168,2, 2);//下位远程IP

//设置AP网络参数

IPAddress lxip(192, 168,2, 1);//AP端IP

IPAddress lxip1(192, 168,2, 1);//AP端网关

IPAddress lxip2(255, 255,255, 0);//AP端子网掩码

//设置AP账号密码

const char *ssid1 = "Netcore_wsn1";//AP  wifi名

const char *password1 = "99325408322";//AP  wifi密码

/**********************************************************/

IPAddress Serverip(192, 168, 1, 4);//上位机远程IP

unsigned int localPort = 9999;//本地端口

unsigned int remoteport = 9999;//远程端口

WiFiUDP udp;

char packetBuffer[255];//收发缓冲区

void setup() {

Serial.begin(115200);//初始化串口波特率

delay(5000);//延时5S

WiFi.mode(WIFI_AP_STA);//设置模式为AP+STA

/******************* AP 当WIFI  *****************************/

WiFi.softAPConfig(lxip,lxip1,lxip2);//设置AP网络参数

WiFi.softAP(ssid1,password1,1);//设置AP账号密码

/******************************************************************/

Serial.print("apip:");

Serial.println(WiFi.softAPIP());// AP 自己当WIFI 自己设置的内网地址

/******************* STA 当手机连接WIFI *****************************/

WiFi.begin(ssid,password);//连接指定路由

WiFi.config(sip,sip1,sip2);//设置本地网络参数

Serial.print("Is connection routing, please wait");

while(WiFi.status()!=WL_CONNECTED)//等待路由连接

{

delay(500);

Serial.print(".");

}

/******************************************************************/

Serial.println(" ");

udp.begin(localPort);//监听指定端口

Serial.print("ip:");

Serial.println(WiFi.localIP());// STA 当手机连接WIFI 自己设置的静态地址

}

void loop()

{

if(udp.parsePacket())

{

udp.read(packetBuffer,255);//读取数据

udp.beginPacket(Serverip,remoteport);

udp.write(packetBuffer,255);

udp.endPacket();

Serial.println(packetBuffer);

udp.beginPacket(xip,remoteport);

udp.write(packetBuffer,255);

udp.endPacket();

memset(packetBuffer, 0, 255);//清除缓冲器数值

}

}

　　

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