查看WiFi.setDNS()的源代码

:[[WiFi库|WiFi]]

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<font color="olivedrab" size="+3">'''setDNS()'''</font>



<font color="orange" size="+1">'''描述'''</font>

<span style="background:lightblue">WiFi.setDNS()</span> allows you to configure the DNS (Domain Name System) server.


<font color="orange" size="+1">'''语法'''</font>

WiFi.setDNS(dns_server1)

WiFi.setDNS(dns_server1, dns_server2)


<font color="orange" size="+1">'''参数'''</font>

'''dns_server1''': the IP address of the primary DNS server

'''dns_server2''': the IP address of the secondary DNS server


<font color="orange" size="+1">'''返回值'''</font>

Nothing


<font color="orange" size="+1">'''示例'''</font>

This example shows how to set the Google DNS (8.8.8.8). You can set it as an object IPAddress.

<pre style="color:dimgray">
#include <SPI.h>
#include <WiFi.h>

// the IP address for the shield:
IPAddress dns(8, 8, 8, 8);  //Google dns  

char ssid[] = "yourNetwork";    // your network SSID (name) 
char pass[] = "secretPassword"; // your network password (use for WPA, or use as key for WEP)

int status = WL_IDLE_STATUS;

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:
  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 SSID: ");
    Serial.println(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);
  }

  // print your WiFi shield's IP address:
  WiFi.setDNS(dns);
  Serial.print("Dns configured.");
}

void loop () {
}

</pre>

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