ESP8266 arduino wifi文档阅读

来源

https://arduino-esp8266.readthedocs.io/en/3.0.2/ideoptions.html
https://www.arduino.cc/en/Reference/WiFi

WIFI库

连接示例

#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(){}

包含的class

Station 连接wifi
SOFT-AP 作为软路由-提供其他设备联网能力
Scan 扫描范围内的SSID

Client

WiFiClient()
connected()
connect()
write()
print()
println()
available()
read()
flush()
stop()

WiFi Multi 记录多个ap并在断线时选择信号最好的wifi连接

#include <ESP8266WiFiMulti.h>

ESP8266WiFiMulti wifiMulti;
// WiFi connect timeout per AP. Increase when connecting takes longer.
const uint32_t connectTimeoutMs = 5000;

void setup()
{
  // Set in station mode
  WiFi.mode(WIFI_STA);

  // Register multi WiFi networks
  wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1");
  wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2");
  wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3");
}

void loop()
{
  // Maintain WiFi connection
  if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) {
      ...
  }
}

Server
例子

#include <ESP8266WiFi.h>

const char* ssid = "********";
const char* password = "********";

WiFiServer server(80);

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");

  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;
  htmlPage.reserve(1024);               // prevent ram fragmentation
  htmlPage = F("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:  ");
  htmlPage += analogRead(A0);
  htmlPage += F("</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;
        }
      }
    }

    while (client.available()) {
      // but first, let client finish its request
      // that's diplomatic compliance to protocols
      // (and otherwise some clients may complain, like curl)
      // (that is an example, prefer using a proper webserver library)
      client.read();
    }

    // close the connection:
    client.stop();
    Serial.println("[Client disconnected]");
  }
}

UDP UDP通信

begin()
available()
beginPacket()
endPacket()
write()
parsePacket()
peek()
read()
flush()
stop()
remoteIP()
remotePort()

《ESP8266 arduino wifi文档阅读》上有1条评论

ForexInorwak说道：

2022年1月20日上午9:02

初心者のための外国為替取引ビデオ. https://jp.system-forex.com

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