java - RFID ReaderTrack Loop -


hey guys i'll project call "rfid management system"

i found samlpe code websites , add few codes it.

my rfid can read number mifare card right now, face problem : how create loop rfid machine in order read card again , again without pushing "run" button in eclipse

import java.util.list; import javax.smartcardio.*; import javax.xml.bind.datatypeconverter;  public class blog {  public static void main(string[] args) {   try {    // display list of terminals    terminalfactory factory = terminalfactory.getdefault();    list<cardterminal> terminals = factory.terminals().list();    system.out.println("terminals: " + terminals);     // use first terminal    cardterminal terminal = terminals.get(0);     // connect wit hthe card     card card = terminal.connect("*");    system.out.println("card: " + card);    cardchannel channel = card.getbasicchannel();      // send select applet command    responseapdu answer = channel.transmit(new commandapdu(new byte[] { (byte)0xff, (byte)0xca, (byte)0x00, (byte)0x00, (byte)0x00 } ));     // send test command    answer = channel.transmit(new commandapdu(new byte[] { (byte)0xff, (byte)0xca, (byte)0x00, (byte)0x00, (byte)0x00 } ));    byte r[] = answer.getdata();    string hex = datatypeconverter.printhexbinary(answer.getbytes());    system.out.println("response: " + hex);     // disconnect card    card.disconnect(false);   } catch(exception e) {    system.out.println("ouch: " + e.tostring());   }  } }

u might aware of arduino programming , right?, there have loop function(), whatever code write inside loops ever. logic these things (like rfid, finger print scanner, temp sensors, motion detectors etc) . use same technology here. put ur code inside 

while(1){   }

loop. iterate ur code ever. hence u desired o/p. u can flash ur card many times u want. make sure code reading , processing data should come inside loop. otherwise takes memory , may crash ur code.


Comments

Post a Comment

Popular posts from this blog

php - How to add and update images or image url in Volusion using Volusion API -

actually have store importing products store product data insert , update image or image url not insert , update. this xml code name datapro.txt. <products_joined> <productcode>3710_012t</productcode> <vendor_partno>eah5450silent/di/1gd3(lp)</vendor_partno> <productname>test product ta</productname> <hideproduct>n</hideproduct> <stockstatus>20</stockstatus> <lastmodified>1/5/2016 10:25:00 am</lastmodified> <lastmodby>2</lastmodby> <productweight>0.9</productweight> <productprice>100</productprice> <productmanufacturer>asus tek</productmanufacturer> <vendor_price>32.69</vendor_price> <numproductssharingstock>0</numproductssharingstock> <categoryids>107</categoryids> <producturl>http://tebkq.mvlce.servertrust.com/productdetails.asp?productcode=3710_012t</producturl...
Read more

Laravel mail error `Swift_TransportException in StreamBuffer.php line 269: Connection could not be established with host smtp.gmail.com [ #0]` -

i developing website contact-us page guest users can send me email using gmail . anytime try send mail using contact-us form, error swift_transportexception in streambuffer.php line 269: connection not established host smtp.gmail.com [ #0] this mail.php return [ 'driver' => env('mail_driver', 'smtp'), 'host' => env('mail_host', 'smtp.gmail.com'), 'port' => 587, 'from' => ['address' => '', 'name' => ''], 'encryption' => env('mail_encryption', 'tls'), 'username' => env('mail_username'), 'password' => env(mail_password), 'sendmail' => '/usr/sbin/sendmail -bs', 'pretend' => env('mail_pretend', false), ]; this .env mail_driver=smtp mail_host=smtp.gmail.com mail_port=587 mail_username=afecjaped@gmail.com mail_password=********...
Read more

c# SetCompatibleTextRenderingDefault must be called before the first -

i tried search exception couldn't find solution on case i'am using code below invoke .net application : assembly assem = assembly.load(data); methodinfo method = assem.entrypoint; var o = activator.createinstance(method.declaringtype); method.invoke(o, null); the application invoked has form , in entrypoint of application : [stathread] static void main() { application.enablevisualstyles(); application.setcompatibletextrenderingdefault(false); //exception application.run(new form1()); } setcompatibletextrenderingdefault must called before first iwin32window object created in application. edit : assembly = assembly.load(data); methodinfo method = a.gettype().getmethod("start"); var o = activator.createinstance(method.declaringtype); method.invoke(o, null); you should create new method skips initialization...
Read more