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how to interface DS2431 in arduino

some good introduction from instructables: Bus Pirate 3EEPROM Explorer Board


steps are:
1. find the device address
2. write 8 bytes to scratchpad
3. verify from scratchpad and get the authorization code
4. write scratchpad to EEPROM
5. verify scratchpad write
6. read back the values

FredBlais has written a working example here

and the Onwire.h library is located in PaulStoffregen's github


references:
sheepdogguides
PJRC
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1271724996/3#3
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