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You are here: Home / Topics / RFID interfacing

RFID interfacing

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Microcontroller › 8051 › RFID interfacing

  • This topic has 12 replies, 4 voices, and was last updated 11 years, 2 months ago by SHAH DISHANT H..
Viewing 13 posts - 1 through 13 (of 13 total)
  • Author
    Posts
  • March 31, 2014 at 8:34 am #4873
    Apoorva
    Participant

    Hi, plz help me

     

    my RFID shows some garbage values

     

    I have used code available in the project named

    How to interface RFID with 8051 microcontroller (AT89C51)

     

     

    March 31, 2014 at 8:53 am #11430
    SHAH DISHANT H.
    Participant

    Hi,

     

    LCD needs ASCII data to display anything on it. First check RFID with hyperterminal. If its showing values fine then tell me what are the ID numbers of your TAG.

     

    We have to convert the digit into ASCII.

     

    Post result of hyperterminal.

    March 31, 2014 at 12:31 pm #11431
    Apoorva
    Participant

    I dont know what is hyperterminal, plz tell me what is it.

    April 3, 2014 at 10:44 am #11453
    Apoorva
    Participant

    how can I know my RFID tag’s uniques number without reader module???

     

    Can it be known from printed on it??

     

    plz help me.

     

     

    April 3, 2014 at 11:58 am #11454
    mohita
    Participant

    Hi,

    Hyper terminal is a computer communication software. Some uses of hyper terminal are:

     

    1.Use a TCP/IP n/w to connect to systems on the internet or your n/w.

    2.Use a Dial-up modem to dial into modem based systems.

    3.Talk directly to many different types of devices using serial COM ports.

     

    Thanks

    April 7, 2014 at 4:35 am #11489
    SHAH DISHANT H.
    Participant

    Hi,

     

    Hyperterminal is a communication tool. In windows xp, its by default installed but in Vista, 7 and 8, its not available. You can download it from website. Its easily available. 

     

    Once installed, you can connect RFID module with PC. for laptop you need usb to serial converter.

     

    You can not identify unique tag number without reader. You need above mentioned setup.

     

    If you find any difficulty, post us back.

    April 7, 2014 at 10:54 pm #11500
    Apoorva
    Participant

    thank you,

     

    I got the serial number using HyperTerminal. 

    April 8, 2014 at 8:39 pm #11508
    Apoorva
    Participant
    I get the card number using Hyperterminal
     
    card numbers and numbers printed on card  are; 
     
    4E00706E3B6B –0007368251 112,28219
     
    4F006DD849B3 — 0007198793 109,55369
     
    4F006DD858A2 — 0007198808 109,55384
     
    4F006DE25595 — 0007201365 109,57941
     
    i have tried all the code given in  engineersgarage but still it shows garbage.
     
    plz plz plz help me
     
    thank you..
    April 10, 2014 at 3:26 am #11510
    SHAH DISHANT H.
    Participant

    Hi,

     

    Once you are getting with hyperterminal, lets move ahead step by step…!!

     

    1. WAP to receive data serially on 8051… Send single byte data from hyperterminal and display it on LCD

    2. Modify above progra, to receive data from hyperterminal and store in array and display it on LCD

    3. Run the same code with RFID instead of HYPERTERMINAL…!!

     

     

     

    All the best…!!!

    April 10, 2014 at 7:13 pm #11521
    Apoorva
    Participant

    SCON=0x50;

    TH1=0xFD;

    TMOD=0x20;            
    TR1=1;     
     
    is this right code to recieve 8 bit data at 9600 baud?? 
    April 14, 2014 at 11:29 am #11550
    SHAH DISHANT H.
    Participant

    Hi,

     

    The above code is only to initialise serial communication at 9600 baudrate.

     

    To receive data use following function…

    void main()

    {

     int a;

    a=receivedataserially();

     

     

    }

     

    int receivedataserially()

    {

    while(RI==0);

    RI=0;

    return SBUF;

     

    }

     

     

    From above code, you will get data in variable a.

     

     

    April 15, 2014 at 12:06 pm #11557
    Pratik Agrawal
    Participant

    Hi, I have connected my rfid module with hyperterninal but it is not showing any data, what should i do?

     

    April 16, 2014 at 4:00 pm #11578
    SHAH DISHANT H.
    Participant

    Hi,

     

    If its not showing on hyperterminal try with different baudrates..!!

     

    Even if its not working, may be you have to change the READER…!!!

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