RFID will only read tag once. Help.

hello,

i have program written text different message based on tag read. works out, except rfid scan 1 tag, , green light stays lit. way have found reset open serial monitor again. post code , insight appreciated.

thanks

code: [select]

#include <softwareserial.h>
softwareserial sim900(7,8);
char card[12] = {'7','2','0','0','7','7','5','2','4','9'};
char card2[12] = {'7','2','0','0','7','7','4','9','e','b'};
char code[12];
int bytesread = 0;
int rfidpin = 2; // rfid enable pin connected digital pin 2
int val=0;


void setup()
{
  serial.begin(2400); // rfid reader sout pin connected serial rx pin @ 2400bps
  pinmode(rfidpin,output);   // set digital pin 2 output connect rfid /enable pin
  digitalwrite(rfidpin, low); // activate rfid reader
  sim900.begin(19200);
  sim900power();
  delay(10000);
}
void sim900power()
{digitalwrite(9,high);
delay(1000);
digitalwrite(9,low);
delay(3000);
}
void sendsms()
{         
  sim900.println("code great: ");
  sim900.print("at+cmgf=1\r");                                                        // @ command send sms message
  delay(100);
  sim900.println("at + cmgs = \"+xxxxxxxxxxx\"");                                     // recipient's mobile number, in international format
  delay(100);
  sim900.println("hello");   // message send
  delay(100);
  sim900.println((char)26);                       // end @ command ^z, ascii code 26
  delay(100);
  sim900.println();
  delay(5000);                                     // give module time send sms
  sim900power();                                   // turn off module
}
void sendsms2()
{
            sim900.println("code good: ");
          sim900.print("at+cmgf=1\r");                                                        // @ command send sms message
  delay(100);
  sim900.println("at + cmgs = \"+xxxxxxxxxxx\"");                                     // recipient's mobile number, in international format
  delay(100);
  sim900.println("howdy");   // message send
  delay(100);
  sim900.println((char)26);                       // end @ command ^z, ascii code 26
  delay(100);
  sim900.println();
  delay(5000);                                     // give module time send sms
  sim900power();                                   // turn off module
}
void loop()
{
  digitalwrite(rfidpin, low);

  if(serial.available() > 0)    // if data available reader
  {     

     if((val = serial.read()) == 10)    // check 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 10 digit reading
            break;               // stop reading

          code[bytesread] = val;       // add digit
          bytesread++;           // ready read next digit
        }
      }
      if(bytesread >= 10)       // if 10 digit read complete
      {       
        digitalwrite(rfidpin, high);        // de-activate rfid reader

        if(strcmp(code, card) == 0)
        {
          serial.print("code accecpted: ");
          serial.println(code);
          sendsms();
          {} while (1);
         
        }
         if(strcmp(code, card2) == 0)
        {
          serial.print("code alright: ");
          serial.println(code);
          sendsms2();
          {} while (1);
         
        }
       
 
        else
        {
          serial.print(code);
          serial.println(" not valid!");
     
        }
      }
      bytesread = 0;
      delay(500);                // wait second
     }
  }
}


could post code using code tags.

i don't want have to:
download file,
store in folder correct name.
open arduino ide view file.
and delete file after viewing it.

i'd rather read on page.

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