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我最近买了一个 arduino wifi shield（Atmal 芯片 32UC3A1512-U），我将它与我的 Arduino Mega ADK R3 板连接）...它正在连接到我的 wifi 网络，但是当我运行
库中提供的 SimpleWebServer 示例时开/关 LED 不工作。代码如下...

#include <SPI.h>
#include <WiFi.h>

char ssid[] = "belkin.E33";      //  your network SSID (name) 
char pass[] = "abc123cde456";   // your network password
int keyIndex = 0;                 // your network key Index number (needed only for WEP)

int status = WL_IDLE_STATUS;
WiFiServer server(80);

void setup() {
  Serial.begin(9600);      // initialize serial communication
  pinMode(9, OUTPUT);      // set the LED pin mode

  // check for the presence of the shield:
  if (WiFi.status() == WL_NO_SHIELD) {
  Serial.println("WiFi shield not present"); 
   while(true);        // don't continue
   } 

   // attempt to connect to Wifi network:
  while ( status != WL_CONNECTED) { 
    Serial.print("Attempting to connect to Network named: ");
    Serial.println(ssid);                   // print the network name (SSID);

    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:    
     status = WiFi.begin(ssid, pass);
     // wait 10 seconds for connection:
     delay(10000);
   } 
  server.begin();                           // start the web server on port 80
  printWifiStatus();        // you're connected now, so print out the        status
}


void loop() {


  WiFiClient client = server.available();   // listen for incoming clients

  if (client) {                             // if you get a client,
    Serial.println("new client");           // print a message out the serial port
    String currentLine = "";      // make a String to hold incoming data from the client
    while (client.connected()) {            // loop while the client's connected
     if (client.available()) {             // if there's bytes to read from the client,
     char c = client.read();             // read a byte, then
     Serial.write(c);                    // print it out the serial monitor
     if (c == '\n') {                    // if the byte is a newline character

      // if the current line is blank, you got two newline characters in a row.
      // that's the end of the client HTTP request, so send a response:
      if (currentLine.length() == 0) {  
        // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
        // and a content-type so the client knows what's coming, then a blank line:    
        client.println("HTTP/1.1 200 OK");
        client.println("Content-type:text/html");
        client.println();

        // the content of the HTTP response follows the header:
        client.print("Click <a href=\"/H\">here</a> turn the LED on pin 9 on<br>");
        client.print("Click <a href=\"/L\">here</a> turn the LED on pin 9 off<br>");

        // The HTTP response ends with another blank line:
        client.println();
        // break out of the while loop:
        break;         
       } 
       else {      // if you got a newline, then clear currentLine:
         currentLine = "";
       }
     }     
     else if (c != '\r') {  // if you got anything else but a carriage return character,
      currentLine += c;      // add it to the end of the currentLine
    }

    // Check to see if the client request was "GET /H" or "GET /L":
    if (currentLine.endsWith("GET /H")) {
      digitalWrite(9, HIGH);               // GET /H turns the LED on
    }
    if (currentLine.endsWith("GET /L")) {
      digitalWrite(9, LOW);                // GET /L turns the LED off
     }
   }
 }
// close the connection:
client.stop();
Serial.println("client disonnected");
  }
}

void printWifiStatus() {
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
 Serial.println(WiFi.SSID());

 // print your WiFi shield's IP address:
 IPAddress ip = WiFi.localIP();
 Serial.print("IP Address: ");
 Serial.println(ip);

 // print the received signal strength:
 long rssi = WiFi.RSSI();
 Serial.print("signal strength (RSSI):");
 Serial.print(rssi);
 Serial.println(" dBm");
// print where to go in a browser:
Serial.print("To see this page in action, open a browser to http://");
Serial.println(ip);
 }

我在串行监视器中得到的结果是

Attempting to connect to Network named: belkin.E33
SSID: belkin.E33
IP Address: 192.168.2.5
strength (RSSI):-56 dBm
To see this page in action, open a browser to http://192.168.2.5

但是当我使用指定的 IP 地址打开浏览器时，它显示无法连接到 192.168.2.5 我已经在我的 ubuntu 机器上的 mozilla 和 chrome 中尝试过这个......也从同一网络中的其他一些机器上尝试过，但使用同样的结果。但是当我 ping 到 192.168.2.5 时，它正在 ping...出了什么问题？？？. 我的朋友建议更改固件...这是一个问题吗，bcas 如前所述建立连接的简单示例正在工作...请指导我

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1 回答 1

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在将 Arduino IDE 从 v1.0.8 升级到最新版本 (v2) 后，我遇到了同样的问题，这在 wifi shield 测试（客户端和服务器）方面做得很好。

现在要尝试夜间构建，看看它是否已修复。

编辑：是的，Nightly build 解决了这个问题。

于 2013-07-03T00:19:24.167 回答