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標題: arduino ethernet w5100從server下載檔案，是否有錯?一直連不上(求解) [打印本頁]

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作者: midsl123    時間: 2014-12-28 12:22
標題: arduino ethernet w5100從server下載檔案，是否有錯?一直連不上(求解)


以下是參考別人的範例程式碼：
#include <SPI.h>
#include <Ethernet.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //physical mac address
byte ip[] =  {120,114,151,X}; // ip in lan assigned to arduino
byte gateway[] = { 192, 168, 1, 1 }; // internet access via router
byte subnet[] = { 255, 255, 255, 0 }; //subnet mask
byte myserver[] = { 120, 114, 134, XX}; // zoomkat web page server IP address
EthernetClient client;
//////////////////////

void setup(){

// disable SD SPI interface
pinMode(4,OUTPUT);
digitalWrite(4,HIGH);

Ethernet.begin(mac, ip);
//Ethernet.begin(mac, ip, subnet, gateway);
Serial.begin(9600);
Serial.println("Better client test 12/01/11"); // so I can keep track of what is loaded
Serial.println("Send an e in serial monitor to test"); // what to do to test
}

void loop(){
  // check for serial input
  if (Serial.available() > 0) //if something in serial buffer
  {
    byte inChar; // sets inChar as a byte
    inChar = Serial.read(); //gets byte from buffer
    if(inChar == 'e') // checks to see byte is an e
    {
      Serial.println("ok");
      sendGET(); // call sendGET function below when byte is an e

    }
  }  
}

//////////////////////////

void sendGET() //client function to send/receive GET request data.
{
  if (client.connect(myserver, 80)) {  //starts client connection, checks for connection
    Serial.println("connected");
    client.println("GET /~ksu4010e060/abc.txt HTTP/1.0"); //download text
    client.println(); //end of get request
  }
  else {
    Serial.println("connection filed"); //error message if no client connect
    Serial.println();
  }

  while(client.connected() && !client.available()) delay(1); //waits for data
  while (client.connected() || client.available()) { //connected or data available
    char c = client.read(); //gets byte from ethernet buffer
    Serial.print(c); //prints byte to serial monitor
  }

  Serial.println();
  Serial.println("disconnecting.");
  Serial.println("==================");
  Serial.println();
  client.stop(); //stop client

}

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