查看“Microduino W5500 Network (3)”的源代码

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==Purpose==
The course will show you how to send data to one website and receive returned data of the website.

==Equipment==
*'''[[Microduino-Core]]'''
*'''[[Microduino-USBTTL]]'''
*'''[[Microduino-W5500]]'''
*'''[[Microduino-RJ45]]'''

*Other hardware equipment 
**USB cable   One 

==Schematic==

*Microduino-W5500
*Microduino-RJ45
*Microduino-Core
*Microduino-USBTTL
Stack them and then plug in cable. 

As follows: 
[[File:MicroduinoW5500Show.png|600px|center|thumb]]

==Program==

[[https://github.com/Microduino/Microduino_Tutorials/tree/master/Microduino_Advanced_Tutorial/W5500Code/MicroduinoW5500Three MicroduinoW5500Three]]

==Debugging==

Step 1: First, make sure there is _02_Microduino_Ethernet_WIZ library in your IDE. If not, you should download one and put it into libraries folder of the IDE and restart IDE. 

Step 2: If there still exists the previous Ethernet library in your libraries folder, it needs to be deleted since the previous Ethernet is compiled according to W5100. 


Then, you need to change _02_Microduino_Ethernet_WIZ file so that the library function could be corresponding with Microduino-W5500: 

First find w5100.h of utility in _02_Microduino_Ethernet_WIZ library. 

Change #define wiz_cs_pin 8	//CS_PIN of the code to #define wiz_cs_pin 10	//CS_PIN. 

Step 3: Interpret the code:  

Here is a simple php webpage. 
http://www.lucadentella.it/demo/aphorisms.php
Each time you open the link, it will return you a maxim. 

The code we complied can get these maxims and output to serial port. 

  // if you get a connection, report back via serial:
  if (client.connect(server, 80)) {
    Serial.println("connected");
    // Make a HTTP request:
    client.println("GET /demo/aphorisms.php HTTP/1.1");
    client.println("Host: www.lucadentella.it");
    client.println("Connection: close");
    client.println();
  } 
  else {
    // if you didn't get a connection to the server:
    Serial.println("connection failed");
  }
First, visit this page in the code. 
  // if there are incoming bytes available 
  // from the server, read them and print them:
  if (client.available()) {
    char c = client.read();
    Serial.print(c);
  }
Output the returned info. to serial port and when failed to visit, you’ll see notice in the serial port

Step 3: Download code and pass compile. 

Step 4: Watch the serial port. 

==Result==

If everything goes well, you’ll see the information below: 

[[File:MicroduinoW5500WebClient.png|600px|center|thumb]]

It will show a maxim randomly and then close.    

==Video==


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