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You are here: Home / Topics / rfid based security system code of c programming using the id given

rfid based security system code of c programming using the id given

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Microcontroller › 8051 › rfid based security system code of c programming using the id given

  • This topic has 4 replies, 3 voices, and was last updated 12 years, 3 months ago by chandrasekhar.
Viewing 5 posts - 1 through 5 (of 5 total)
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  • April 18, 2012 at 9:32 am #1494
    amulya
    Participant

     

    please respond to my question as soon as possible….we have undertaken rfid security system as our project and in the code given the rfid tag ie the serial number is of matrix 6, 12 matrix form  but the tag we have  purchased has number which goes… 0012815517 195,35997 plz provide me the solution of this rfid serial number in the code
    that woud be a great deal of help…please respond asap…
    thanku
    April 20, 2012 at 12:57 pm #7519
    AJISH ALFRED
    Participant

    Each RFID tag has a seperate number. Easy method is that read the number serially and store it as a string, and then simply use string comparison functions like strcmp ( ) to identify the tag. Could you please share why are you going for a 6*12 matrix ?

    April 20, 2012 at 1:56 pm #7524
    amulya
    Participant

    hey thanks for the help,but the code that was already availabe had a 6×12 matrix. our main question is how to read the tag  serially,because unlike other tags,ours has a 20 character unique id, which includes spaces and even a comma. and we are using 6X12 matrix bcz lcd display has the following specifications…

     

    April 21, 2012 at 12:05 pm #7528
    AJISH ALFRED
    Participant

    Hi amulya,

    could you please share the part number of your 6,12 LCD module, coz so far I’ve seen only LCD module with specification 16,2 or 16,1 or 16,4 etc.

    Anyway for your 6, 12 matrix, consider it as a linear array of 72 elements (6*12). Now you can start from 0th elemnt and store the 0th character coming in serially, increment the array elemnt to 1, store the 1th serial character….. do it till the 19th character is received.

    March 26, 2013 at 5:05 pm #9376
    chandrasekhar
    Participant

    what u have specified is not the tag serial code.inorder to find the serial code.u have to interface your rfid module with pc then u can see the 12 bit serial code in the hyperterminal.

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