How do I interface a ds2431 1-wire/ line driver to the uart phyiscally ?

[geoffrey]

Does anybody have any ideas on how to interface a ds2431 1-wire to the uart phyiscally ? Do I need a line drive "ds2480" to do this ? Either way, could you give me some suggestions (schematic) on how to do this?  I'm using a 5213 coldfire.

Message Edited by geoffrey on 2007-01-1903:16 PM

[David_L]

I don't think you really want to do that. The dallas 1 wire protocol is NOT compatible with a normal UART. You could if necessary bit bang the 1 wire protocol, but it is not trivial and you'll have a lot of messy time dependent code when you are done. I did it once but it was to talk to a special function 1 wire part for battery gas gauging. The DS2431 on the other hand is nothing but a 1K bit EEPROM. Why not use 1K EEPROM that is either SPI or I2C? Most of the coldfire parts have these ports built in and will easily bolt right up. In addition these EEPROMs are multiple source devices unlike the DS2431.