You might find some useful info here:
http://www.lightningnetwork.org/
They implemented 1-wire on a Rabbit 3000 based system.
There is also an RCM4300 based 1-wire sensor kit https://www.digikey.com/us/en/ph/rabbit/sensorkit.html?WT.z_Tab_Cat=Featured%20Products
But I don't see the libraries from it available anywhere on the Digi site.
Regards,
Peter