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我已经用 arduino 玩了 2 天了，所以我是新手，但我有一个问题：wifi shield 不能与 arduino ethernet R3 一起使用。我是从 sparkfun 那里得到的：

https://www.sparkfun.com/products/11361 https://www.sparkfun.com/products/11287

每次我尝试运行这段代码时：

/*

 This example  prints the Wifi shield's MAC address, and
 scans for available Wifi networks using the Wifi shield.
 Every ten seconds, it scans again. It doesn't actually
 connect to any network, so no encryption scheme is specified.

 Circuit:
 * WiFi shield attached

 created 13 July 2010
 by dlf (Metodo2 srl)
 modified 21 Junn 2012
 by Tom Igoe and Jaymes Dec
*/


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

void setup() {
  //Initialize serial and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }

  // check for the presence of the shield:
  unsigned long start=millis();
  while (WiFi.status() == WL_NO_SHIELD) 
  {
    if ((millis()-start)>30000)
    {
      Serial.println("WiFi shield not present"); 
      // don't continue:
      while(true);
    }
    delay(500);
  }

  // Print WiFi MAC address:
  printMacAddress();

  // scan for existing networks:
  Serial.println("Scanning available networks...");
  listNetworks();
}

void loop() {
  delay(10000);
  // scan for existing networks:
  Serial.println("Scanning available networks...");
  listNetworks();
}

void printMacAddress() {
  // the MAC address of your Wifi shield
  byte mac[6];                     

  // print your MAC address:
  WiFi.macAddress(mac);
  Serial.print("MAC: ");
  Serial.print(mac[5],HEX);
  Serial.print(":");
  Serial.print(mac[4],HEX);
  Serial.print(":");
  Serial.print(mac[3],HEX);
  Serial.print(":");
  Serial.print(mac[2],HEX);
  Serial.print(":");
  Serial.print(mac[1],HEX);
  Serial.print(":");
  Serial.println(mac[0],HEX);
}

void listNetworks() {
  // scan for nearby networks:
  Serial.println("** Scan Networks **");
  int numSsid = WiFi.scanNetworks();
  if (numSsid == -1)
  {
    Serial.println("Couldn't get a wifi connection");
    while(true);
  }

  // print the list of networks seen:
  Serial.print("number of available networks:");
  Serial.println(numSsid);

  // print the network number and name for each network found:
  for (int thisNet = 0; thisNet<numSsid; thisNet++) {
    Serial.print(thisNet);
    Serial.print(") ");
    Serial.print(WiFi.SSID(thisNet));
    Serial.print("\tSignal: ");
    Serial.print(WiFi.RSSI(thisNet));
    Serial.print(" dBm");
    Serial.print("\tEncryption: ");
    printEncryptionType(WiFi.encryptionType(thisNet));
  }
}

void printEncryptionType(int thisType) {
  // read the encryption type and print out the name:
  switch (thisType) {
  case ENC_TYPE_WEP:
    Serial.println("WEP");
    break;
  case ENC_TYPE_TKIP:
    Serial.println("WPA");
    break;
  case ENC_TYPE_CCMP:
    Serial.println("WPA2");
    break;
  case ENC_TYPE_NONE:
    Serial.println("None");
    break;
  case ENC_TYPE_AUTO:
    Serial.println("Auto");
    break;
  }
}

我得到一个不存在的 WiFi 屏蔽。关于如何正确连接它的任何想法？

谢谢你！

4

1 回答 1

1

您列出的产品似乎是多余的。具体来说，~/11361 是一个多合一的 arduino 开发者。板 + 以太网但没有无线（即以太网连接是通过电缆），而 ~/11287 是一个 WiFi 屏蔽，用于通用 Arduino 板上并连接到互联网。

问题可能是在 11361 上使用 11287 作为屏蔽会导致冲突？我不知道，但链接http://arduino.cc/en/Reference/WiFi有以下评论：

WiFi库与以太网库非常相似，很多函数调用都是一样的。

这让我有点怀疑。

在标准 Arduino 板上试用屏蔽 (11287)。

于 2013-08-12T22:38:03.157 回答