Ibutton

[nileshhande]

Hi,
Im looking for DALLAS Ibutton interface...DS1990A or DS1991 MultiKey iButton project(PIC)..

http://www.maxim-ic.com/products/ibutton/products/ibuttons.cfm

Thanks&Regards..

[ogul]

CONTROL1 var byte
K var byte
DATBUF    var byte[8]

tom_wait:
        gosub tom_reset
        if CONTROL1=0 then tom_wait
        gosub tom_read
        lcdout $FE,$01
        For K=0 to 7
           lcdout DATBUF[K]," "
        NEXT K
        pause 2000
        goto tom_wait

tom_reset:     
        CONTROL1=1
        Low PORTB.2           ' Set the data pin low to init
        Pauseus 500             ' wait > 480us
        input PORTB.2
        Pauseus 100             ' Wait > 60us
        If PORTB.2= 1 Then  CONTROL1=0 'no tom
        Return   
tom_read:       '
        OWOUT PORTB.2, 1, [$33]
        OWIN PORTB.2, 0, [STR DATBUF\8]   ' 8-byte "ID"
        return

[nileshhande]

if you could Give some more essential information of this code like... Read multiple ibuttons and if button1 = xxxx then high port1 else if button2 = xxxx then high port2...some thing like that........
Thank you very much...
Regards.