gistfile1.txt

#include <Ethernet.h>
#include "Dhcp.h"
#include <string.h>

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte server[] = { 10, 10, 10, 149 }; // Local Rails App
boolean ipAcquired = false;
int  val = 0; 
char code[10]; 
int bytesread = 0; 
int ledPin = 12;

Client client(server, 3000);

void setup() { 
  Serial.begin(2400); // RFID reader SOUT pin connected to Serial RX pin at 2400bps 
  pinMode(2,OUTPUT);   // Set digital pin 2 as OUTPUT to connect it to the RFID /ENABLE pin 
  digitalWrite(2, LOW);                  // Activate the RFID reader
  Serial.println("Trying to get an IP Address.");
  int result = Dhcp.beginWithDHCP(mac);
  if(result == 1)
  {
    ipAcquired = true;
    
    byte buffer[6];
    Serial.println("ip acquired...");
    
    Dhcp.getMacAddress(buffer);
    Serial.print("mac address: ");
    printArray(&Serial, ":", buffer, 6, 16);
    
    Dhcp.getLocalIp(buffer);
    Serial.print("ip address: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getSubnetMask(buffer);
    Serial.print("subnet mask: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getGatewayIp(buffer);
    Serial.print("gateway ip: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getDhcpServerIp(buffer);
    Serial.print("dhcp server ip: ");
    printArray(&Serial, ".", buffer, 4, 10);
    
    Dhcp.getDnsServerIp(buffer);
    Serial.print("dns server ip: ");
    printArray(&Serial, ".", buffer, 4, 10);
    delay(5000);
  }
}  

void printArray(Print *output, char* delimeter, byte* data, int len, int base)
{
  char buf[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
  
  for(int i = 0; i < len; i++)
  {
    if(i != 0)
      output->print(delimeter);
      
    output->print(itoa(data[i], buf, base));
  }
  
  output->println();
}


 void loop() { 
  
  if(Serial.available() > 0) {          // if data available from reader 
    if((val = Serial.read()) == 10) {   // check for header 
      bytesread = 0; 
      while(bytesread<10) {              // read 10 digit code 
        if( Serial.available() > 0) { 
          val = Serial.read(); 
          if((val == 10)||(val == 13)) { // if header or stop bytes before the 10 digit reading 
            break;                       // stop reading 
          } 
          code[bytesread] = val;         // add the digit           
          bytesread++;                   // ready to read next digit  
        } 
      } 
      if(bytesread == 10) {              // if 10 digit read is complete 
              digitalWrite(2, HIGH);
    if (client.connect()) {
      Serial.println("connected");
      client.println("POST /11llrhx HTTP/1.1");
      client.println("Host: www.postbin.org");
      client.println("Content-Length: 20");
      client.println();
      client.print("rfid_code=");
      client.println(code);
      //client.println("Content-Length: 10");
      //client.println();
      //client.println(code);
      Serial.println("COMPLETED POST");
      client.flush();
      client.stop();
      delay(1000);
    } else {
      Serial.println("the connection failed");
    }
        Serial.print("TAG code is: ");   // possibly a good TAG 
        Serial.println(code);            // print the TAG code

      } 
      bytesread = 0; 
      delay(2000);                       // wait for a second 
      digitalWrite(2, LOW);
    } 
  } 
} 

// extra stuff in case
// digitalWrite(2, HIGH);             // deactivate RFID reader