Hello all !
Read several AD data-sheets, app notes, etc. plenty of information, but nothing about the "slave" device that I could make on my own. For example, I am running a DS2484 break board from Adafruit, works well, no problems, however, I can only get it to run the DS18B20, which is ok too, but I want to use my own "slave". For example, an extra uC. Thats ok too. Found the Arduino OWI library on the gitHub, very good, I thought thats it, however, I am not on Arduino target, actually, I am using Arduino as UPDI programmer. Indeed, I am on the megaTinyCore. All that is very good, I can program the new tinys very well, etc. , all good, however, I cannot find a One Wire "slave" that I could work on another new AT Tiny, like 3216, etc.
So the question.
Interestingly, the Adafruit DS248x lib compiles and works well on the megaTinyCore and its relevant tinys.
For example, the DS18B20 can be read without a problem. On this note, would it not be possible to use this library and write my own "slave", actually would not the example that comes along with the Adafruit DS248x lib, namely the "DS2484_DS18B20" be a good start ?
Indeed, if any body else has done that, it would be event easier to get going :slight_smile 
Any comments, ideas, etc, are more than appreciated!
Best.
PS was warned about the fact that one wire simulation may be rather used when looking, googling for such an example, if that better rings a bell