How to compare strings/array? RFID Project


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  1. #8
    Join Date
    Jun 2007
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    Quote Originally Posted by Bruce View Post
    Are you sure you're programming your tag numbers in EEPROM at burn time? You should be
    able to read back the .hex after programming to check.
    I donīt wrote the code before for storing on eeprom.

    But maybe this could work
    Code:
    DATA @$00, $D7, $7C, $4B, $02, $2D, $C9, $80, $3A, $C4, $72
    
    Loop    VAR BYTE
    ReadTag VAR BYTE[2]
    Tag     VAR WORD[5]
    TmpTag  VAR BYTE[10]
    ConvTag VAR WORD
    
    ' -----[ Program Code ]----------------------------------------------------
    
    FOR Loop= 0 TO 9           ' Reading Data from EEprom Adr: $00 -$09
        READ Loop,TmpTag(Loop)
    NEXT Loop
    
    Main:
    
    LOW PORTB.3 ' activate the reader
    SERIN2 PORTB.2, T2400, [WAIT($0A,"100050"), STR ReadTag\2]
    HIGH PORTB.3 ' deactivate reader
    
    Check_List:
    
    FOR Loop = 0 TO 8 STEP 2    ' Calculate Word from HighByte + LowByte
        Tag(Loop/2) = TmpTag(Loop)*$100+TmpTag(Loop+1)
    NEXT Loop
    
    ConvTag = ReadTag(0)*$100+ReadTag(1) ' Conversion of ReadTag to WORD
    
    FOR Loop = 0 TO 4           ' Compare if ReadTag compares to Database in Eeprom
        IF ConvTag = Tag(Loop) THEN Tag_found
    NEXT Loop
    GOTO Bad_Char
    
    Bad_Char: ' try next tag
    '....
    '....
    GOTO main
    
    Tag_Found:
    Error corrected... Sorry
    Last edited by Robson; - 25th August 2007 at 18:16.

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