Arduino W5100排错

试了几天的W5100模块，做本地server正常，但是以web client模式运行时，总是连接失败，更换几台电脑以及arduino IDE版本，都是这个问题，后来才发现是MAC地址冲突，更改之后正常。

 

 1 /*
 2   Web client
 3  
 4  This sketch connects to a website (http://www.google.com)
 5  using an Arduino Wiznet Ethernet shield. 
 6  
 7  Circuit:
 8  * Ethernet shield attached to pins 10, 11, 12, 13
 9  
10  created 18 Dec 2009
11  by David A. Mellis
12  
13  */
14 
15 #include <SPI.h>
16 #include <Ethernet.h>
17 
18 // Enter a MAC address and IP address for your controller below.
19 // The IP address will be dependent on your local network:
20 byte mac[] = {  
21   0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xEF };
22 byte ip[] = { 
23   192,168,1,177 };
24 byte server[] = { 
25   203,208,36,20}; // Google
26 
27 // Initialize the Ethernet client library
28 // with the IP address and port of the server 
29 // that you want to connect to (port 80 is default for HTTP):
30 Client client(server, 80);
31 
32 void setup() {
33   // start the Ethernet connection:
34   Ethernet.begin(mac, ip);
35   // start the serial library:
36   Serial.begin(9600);
37   // give the Ethernet shield a second to initialize:
38   delay(1000);
39   Serial.println("connecting...");
40 
41   // if you get a connection, report back via serial:
42   if (client.connect()) {
43     Serial.println("connected");
44     // Make a HTTP request:
45     client.println("GET /search?q=arduino HTTP/1.0");
46     client.println();
47   } 
48   else {
49     // kf you didn't get a connection to the server:
50     Serial.println("connection failed");
51   }
52 }
53 
54 void loop()
55 {
56   if (client.available()) {
57     char c = client.read();
58     Serial.print(c);
59   }
60 }

上面的google ip地址通过nslookup获得。

 

返回的结果是

connecting...
connected
HTTP/1.0 302 Found
Location: http://www.google.com.hk/url?sa=p&hl=zh-CN&pref=hkredirect&pval=yes&q=http://www.google.com.hk/search%3Fq%3Darduino&ust=1364544912341937&usg=AFQjCNFj1fSI9ED_CL0COWIPK91qxDpCiQ
Cache-Control: private
Content-Type: text/html; charset=UTF-8
Set-Cookie: PREF=ID=2e6ecd05dee87fb8:FF=0:NW=1:TM=1364544882:LM=1364544882:S=OnU-EIEfNhz0bbsG; expires=Sun, 29-Mar-2015 08:14:42 GMT; path=/; domain=.google.com
Date: Fri, 29 Mar 2013 08:14:42 GMT
Server: gws
Content-Length: 396
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN

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posted on 2013-03-29 16:45  ardypro  阅读(920)  评论(1)    收藏  举报