Arduino IDE for ESP8266 项目云盒子（2）一键自配置+网页服务器

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手机一键配置esp8266上网，然后发送命令。

1 esp8266烧录代码

代码逐步添加，方便以后回看

1.1 一键自动配置连WIFI+固定IP

#include <ESP8266WiFi.h>
#define LED 2
  
void smartConfig()
{
  WiFi.mode(WIFI_STA);
  Serial.println("
Wait for Smartconfig");
  WiFi.beginSmartConfig();
  while (1)
  {
    Serial.print(".");
    digitalWrite(LED, 0);
    delay(500);
    digitalWrite(LED, 1);
    delay(500);
    if (WiFi.smartConfigDone())
    {
      Serial.println("SmartConfig Success");
      Serial.printf("SSID:%s
", WiFi.SSID().c_str());// WIFI 名

  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("PSW:%s
", WiFi.psk().c_str());
      break;
    }
  }
}
  
void setwifi(){
  
  
  
  }
void setup()
{
  Serial.begin(115200);
  Serial.println("Start module");
  pinMode(LED, OUTPUT);
  digitalWrite(LED, 0);
    setwifi();
  smartConfig();

    IPAddress staticIP(192,168,1,22);
    IPAddress gateway(192,168,1,22);
    IPAddress subnet(255,255,255,0);
    WiFi.config(staticIP, gateway, subnet);
    Serial.print("Connected, IP change address: ");
  Serial.println(WiFi.localIP());   // 分配的动态地址&自己设置的静态地址
}
  
void loop()
{
 // delay(100);
 // Serial.println("Start module");
}

1.2 添加服务端端口80

#include <ESP8266WiFi.h>
#define LED 2

WiFiServer server(80);

void smartConfig()
{
  WiFi.mode(WIFI_STA);
  Serial.println("
Wait for Smartconfig");
  WiFi.beginSmartConfig();
  while (1)
  {
    Serial.print(".");
    digitalWrite(LED, 0);
    delay(500);
    digitalWrite(LED, 1);
    delay(500);
    if (WiFi.smartConfigDone())
    {
      Serial.println("SmartConfig Success");
      Serial.printf("SSID:%s
", WiFi.SSID().c_str());// WIFI 名

  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("PSW:%s
", WiFi.psk().c_str());
      break;
    }
  }
}
  
void setwifi(){
  
  
  
  }
void setup()
{
  Serial.begin(115200);
  Serial.println("Start module");
  pinMode(LED, OUTPUT);
  digitalWrite(LED, 0);
    setwifi();
  smartConfig();

    IPAddress staticIP(192,168,1,22);
    IPAddress gateway(192,168,1,22);
    IPAddress subnet(255,255,255,0);
    WiFi.config(staticIP, gateway, subnet);
    Serial.print("Connected, IP change address: ");
  Serial.println(WiFi.localIP());   // 分配的动态地址&自己设置的静态地址

   server.begin();
  Serial.printf("Web server started, open %s in a web browser
", WiFi.localIP().toString().c_str());
}
  
void loop()
{
  WiFiClient client = server.available();
 if (client)
  {
    Serial.println("
[Client connected]");
    while (client.connected())
    {
      // read line by line what the client (web browser) is requesting
      if (client.available())
      {
        String line = client.readStringUntil('
');
        Serial.print(line);
        // wait for end of client's request, that is marked with an empty line
        if (line.length() == 1 && line[0] == '
')
        {
         // client.println(prepareHtmlPage());
 
           
          break;
        }
      }
    }
    delay(1); // give the web browser time to receive the data
 
    // close the connection:
    client.stop();
    Serial.println("[Client disonnected]");
  }


}

　　1.3 添加网页，游览器输入IP 返回网页

#include <ESP8266WiFi.h>
#define LED 2

WiFiServer server(80);

void smartConfig()
{
  WiFi.mode(WIFI_STA);
  Serial.println("
Wait for Smartconfig");
  WiFi.beginSmartConfig();
  while (1)
  {
    Serial.print(".");
    digitalWrite(LED, 0);
    delay(500);
    digitalWrite(LED, 1);
    delay(500);
    if (WiFi.smartConfigDone())
    {
      Serial.println("SmartConfig Success");
      Serial.printf("SSID:%s
", WiFi.SSID().c_str());// WIFI 名

  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("PSW:%s
", WiFi.psk().c_str());
      break;
    }
  }
}

// prepare a web page to be send to a client (web browser)
String prepareHtmlPage()
{
  String htmlPage =
     String("HTTP/1.1 200 OK
") +
            "Content-Type: text/html
" +
            "Connection: close
" +  // the connection will be closed after completion of the response
            "Refresh: 5
" +  // refresh the page automatically every 5 sec
            "
" +
            "<!DOCTYPE HTML>" +
            "<html>" +
            "Analog input:  " + String(analogRead(A0)) +
            "</html>" +
            "
";
  return htmlPage;
}
  
void setwifi(){
  
  
  
  }
void setup()
{
  Serial.begin(115200);
  Serial.println("Start module");
  pinMode(LED, OUTPUT);
  digitalWrite(LED, 0);
    setwifi();
  smartConfig();

    IPAddress staticIP(192,168,1,22);
    IPAddress gateway(192,168,1,22);
    IPAddress subnet(255,255,255,0);
    WiFi.config(staticIP, gateway, subnet);
    Serial.print("Connected, IP change address: ");
  Serial.println(WiFi.localIP());   // 分配的动态地址&自己设置的静态地址

   server.begin();
  Serial.printf("Web server started, open %s in a web browser
", WiFi.localIP().toString().c_str());
}
  
void loop()
{
  WiFiClient client = server.available();
 if (client)
  {
    Serial.println("
[Client connected]");
    while (client.connected())
    {
      // read line by line what the client (web browser) is requesting
      if (client.available())
      {
        String line = client.readStringUntil('
');
        Serial.print(line);
        // wait for end of client's request, that is marked with an empty line
        if (line.length() == 1 && line[0] == '
')
        {
          client.println(prepareHtmlPage());
 
           
          break;
        }
      }
    }
    delay(1); // give the web browser time to receive the data
 
    // close the connection:
    client.stop();
    Serial.println("[Client disonnected]");
  }


}

1.4 添加串口回传数据电脑串口-esp-client-WIFI路由器-手机-sever

电脑串口发送1

手机收到 49 （ASCLL码）

#include <ESP8266WiFi.h>
#define LED 2

WiFiServer server(80);

void smartConfig()
{
  WiFi.mode(WIFI_STA);
  Serial.println("
Wait for Smartconfig");
  WiFi.beginSmartConfig();
  while (1)
  {
    Serial.print(".");
    digitalWrite(LED, 0);
    delay(500);
    digitalWrite(LED, 1);
    delay(500);
    if (WiFi.smartConfigDone())
    {
      Serial.println("SmartConfig Success");
      Serial.printf("SSID:%s
", WiFi.SSID().c_str());// WIFI 名

  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("PSW:%s
", WiFi.psk().c_str());
      break;
    }
  }
}

// prepare a web page to be send to a client (web browser)
String prepareHtmlPage()
{
  String htmlPage =
     String("HTTP/1.1 200 OK
") +
            "Content-Type: text/html
" +
            "Connection: close
" +  // the connection will be closed after completion of the response
            "Refresh: 5
" +  // refresh the page automatically every 5 sec
            "
" +
            "<!DOCTYPE HTML>" +
            "<html>" +
            "Analog input:  " + String(analogRead(A0)) +
            "</html>" +
            "
";
  return htmlPage;
}
  

void setup()
{
  Serial.begin(9600);
  Serial.println("Start module");
  pinMode(LED, OUTPUT);
  digitalWrite(LED, 0);

   
  smartConfig();

    IPAddress staticIP(192,168,1,4);
    IPAddress gateway(192,168,1,4 );
    IPAddress subnet(255,255,255,0);  
    WiFi.config(staticIP, gateway, subnet);
    Serial.print("Connected, IP change address: ");
  Serial.println(WiFi.localIP());   // 分配的动态地址&自己设置的静态地址

   server.begin();
  Serial.printf("Web server started, open %s in a web browser
", WiFi.localIP().toString().c_str());
}
  
void loop()
{
  WiFiClient client = server.available();
 if (client)
  {
    Serial.println("
[Client connected]");
    while (client.connected())
    {
  
   if (Serial.available()) {
   Serial.print("1");
       client.println(Serial.read());
  }
      // read line by line what the client (web browser) is requesting
      if (client.available())
      {
  
  
        String line = client.readStringUntil('
');
        Serial.print(line);
        // wait for end of client's request, that is marked with an empty line
        if (line.length() == 1 && line[0] == '
')
        {
          client.println(prepareHtmlPage());
 
           
          break;
        }
      }
    }
    delay(1); // give the web browser time to receive the data
 
    // close the connection:
    client.stop();
    Serial.println("[Client disonnected]");
  }


}

1.5被用一段代码用于分割收到的命令，提取我们想要的数据

// First line of HTTP request looks like "GET /path HTTP/1.1"  // 收到的命令格式（可修改），解析跟着改
  // Retrieve the "/path" part by finding the spaces
  int addr_start = req.indexOf(' ');//  找到第一个空格
  int addr_end = req.indexOf(' ', addr_start + 1); // 找到第二个空格
  if (addr_start == -1 || addr_end == -1) {
    Serial.print("Invalid request: ");
    Serial.println(req);
    return;
  }
  req = req.substring(addr_start + 1, addr_end);//  截取两个空格间字符
  Serial.print("Request: ");
  Serial.println(req);

　自动保存WIFI信息自渎取　http://blog.csdn.net/sadshen/article/details/47832551

1. 路由器参数的保存和查询

在DEMO中，设置完STATION模式后，就直接smartconfig。我们应当在smartconfig之前做一个参数判断，判断是否有保存的路由器信息。有保存，就连接路由器。没保存，才smartconfig。

void user_init(void)
{
    os_printf("SDK version:%s
", system_get_sdk_version());

    wifi_set_opmode(STATION_MODE);
    smartconfig_start(smartconfig_done);
}

关于这个路由器参数存储，查了下官方手册，发现SDK还是很贴心的，已经有API可以直接保存和查询了，而不需要我们再去做flash参数存储。

两个关键API摆出来。

保存

wifi_station_set_config
功能:设置 WiFi station 接口的配置参数，并保存到 flash

查询

wifi_station_get_config_default
功能:查询 WiFi station 接口保存在 flash 中的配置参数。

三、代码操作

1.初始化时判断FLASH中是否存有有效的路由器参数。

void user_init(void)
{
    wifi_set_opmode(STATION_MODE);

    wifi_station_get_config_default(&s_staconf);
    if (os_strlen(s_staconf.ssid) != 0) {
      os_printf("user_scan
");
      system_init_done_cb(user_scan);
    } else {
      os_printf("smartcfg
");
      smartconfig_start(smartconfig_done);
    }
}

2.已存有路由器参数，去搜索看看AP当前是否存在。

void ICACHE_FLASH_ATTR
user_scan(void)
{
   struct scan_config config;

   os_memset(&config, 0, sizeof(config));

   config.ssid = s_staconf.ssid;

   wifi_station_scan(&config, user_scan_done);

}

3.之后的操作就看个人处理了。

规范的处理是要开启一个线程，周期性检测AP的连接状态，处理不同的错误状态。我就不展开了。

1.6烧录程序