Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

时间:2021-01-01 10:47:41

Arduio for esp8266 

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

很有价值的参考文献:http://blog.csdn.net/sadshen/article/details/46883245
参考的例程:https://github.com/SmartArduino/ESPDuino/tree/master/Book

网友参考:http://www.arduino.cn/thread-18958-1-1.html

手机一键配置软件

下载ESPTOUCH软件:https://github.com/EspressifApp/IOT-Espressif-Apk
ESPTOUCH的源码:https://github.com/EspressifApp/EsptouchForAndroid

Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

Arduino IDE for ESP8266 项目(4)HTTP客户端+服务端

要想端到端通信两步

1 AP或STA,将自己接入某网络或者自己当网路。

2 建立一个server 或者 client ,在第一里形成的网络里去通信。

1  SF1 STA模式-连接路由器-设置AP-建立sever-手机通过软件 ip+端口访问

/*  WiFiTelnetToSerial - 使用通用异步收发传输器(Universal Asynchronous 

Receiver/Transmitter,UART)与ESPDUINO进行TCP透传的例子 */

#include <ESP8266WiFi.h>

//定义可连接的客户端数目最大值

#define MAX_SRV_CLIENTS 1

const char* ssid = "Doit";

const char* password = "doit3305";

WiFiServer server(23);

WiFiClient serverClients[MAX_SRV_CLIENTS];

void setup() {

  Serial.begin(115200);

  WiFi.begin(ssid, password);

  Serial.print("\nConnecting to "); Serial.println(ssid);

  uint8_t i = 0;

  while (WiFi.status() != WL_CONNECTED && i++ < 20) delay(500);

  if(i == 21){ //超时(20x500=10000,10秒钟),提示连接失败

    Serial.print("Could not connect to"); Serial.println(ssid);

    while(1) delay(500);

  }

  //启动UART传输和服务器

  server.begin();

  server.setNoDelay(true);

  Serial.print("Ready! Use 'telnet ");

  Serial.print(WiFi.localIP());//获得服务器本地IP

  Serial.println(" 23' to connect");

}

void loop() {

  uint8_t i;

  //检测服务器端是否有活动的客户端连接

  if (server.hasClient()){

    for(i = 0; i < MAX_SRV_CLIENTS; i++){

      //查找空闲或者断开连接的客户端,并置为可用

      if (!serverClients[i] || !serverClients[i].connected()){

        if(serverClients[i]) serverClients[i].stop();

        serverClients[i] = server.available();

        Serial.print("New client: "); Serial.println(i);

        continue;

      }

    }

    //若没有可用客户端,则停止连接

    WiFiClient serverClient = server.available();

    serverClient.stop();

  }

  //检查客户端的数据

  for(i = 0; i < MAX_SRV_CLIENTS; i++){

    if (serverClients[i] && serverClients[i].connected()){

      if(serverClients[i].available()){

        //从Telnet客户端获取数据,并推送到URAT端口

        while(serverClients[i].available()) Serial.write(serverClients[i].read());

      }

    }

  }

  //检查UART端口数据

  if(Serial.available()){

    size_t len = Serial.available();

    uint8_t sbuf[len];

    Serial.readBytes(sbuf, len);

    //将UART端口数据推送到所有已连接的telnet客户端,实现双向通信

    for(i = 0; i < MAX_SRV_CLIENTS; i++){

      if (serverClients[i] && serverClients[i].connected()){

        serverClients[i].write(sbuf, len);

        delay(1);

      }

    }

  }

}

  

1.2 SF1 STA模式-连接路由器-设置AP-建立sever-手机通过 网页+软件IP+端口 访问

#include <ESP8266WiFi.h>

const char* ssid = "dongdong";
const char* password = "dongdong"; WiFiServer server(80); void setup()
{
Serial.begin(115200);
Serial.println();

IPAddress staticIP(192,168,1,22);
IPAddress gateway(192,168,1,9);
IPAddress subnet(255,255,255,0);
Serial.printf("Connecting to %s ", ssid);
WiFi.begin(ssid, password); WiFi.config(staticIP, gateway, subnet); while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println(" connected"); server.begin();
Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());
} // 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;
} void loop()
{
WiFiClient client = server.available();
// wait for a client (web browser) to connect
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]");
}
}

2  SF2

2.1 SAT模式-连接WIFI-建立client+远程访问IP+端口

#include <ESP8266WiFi.h>

const char* ssid      = "Doit";    //change to your own ssid

const char* password  = "doit3305";//change to your own password

const char* serverIP  = "115.29.109.104";

int serverPort = 6535;

WiFiClient client;

bool bConnected = false;

char buff[512];

int nm = 0;

void setup() {

  Serial.begin(115200);

  delay(10);

  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());

}

void loop() {

  delay(1);

  if (bConnected == false)

  {

    if (!client.connect(serverIP, serverPort))

    {

      Serial.println("connection failed");

      delay(5000);

      return;

    }

    bConnected = true;

    Serial.println("connection ok");

  }

  else if (client.available())

  {

    Serial.println("Data is coming");

    while (client.available())

    {

      buff[nm++] = client.read();

      if (nm >= 511) break;

    }

    buff[nm] = 0x00;

    nm=0;

    Serial.print(buff);

    client.print(buff);

    client.flush();

  }

}

  

2.2 SAT模式-连接WIFI-建立client+远程访问网页

#include <ESP8266WiFi.h>

const char* ssid = "********";
const char* password = "********"; const char* host = "www.example.com"; void setup()
{
Serial.begin(115200);
Serial.println(); Serial.printf("Connecting to %s ", ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println(" connected");
} void loop()
{
WiFiClient client; Serial.printf("\n[Connecting to %s ... ", host);
if (client.connect(host, 80))
{
Serial.println("connected]"); Serial.println("[Sending a request]");
client.print(String("GET /") + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n" +
"\r\n"
); Serial.println("[Response:]");
while (client.connected())
{
if (client.available())
{
String line = client.readStringUntil('\n');
Serial.println(line);
}
}
client.stop();
Serial.println("\n[Disconnected]");
}
else
{
Serial.println("connection failed!]");
client.stop();
}
delay(5000);
}

3 AF1  AP-Sever

 #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;
}