> Or I can just create my own protocol. What I'm doing is not rocket =20 > science, and fairly low speed, so I can do some sort of serial with =20 > the master telling each slave when to send over it's data. I don't =20 > plan to implement unique serial numbers, because the only thing I =20 > didn't care for with 1-Wire is that the order of the slaves (such as =20 > multiple temp sensors) was unknown until after they were connected. =20 > Yes, it can be corrected in software (with the user indicating which =20 > one is sensor 1, sensor 2, etc) or by physically swapping sensors =20 > after that. And I don't need it to be 1-wire compatible. >=20 > Thanks, > -Neil. >=20 The serial number is also used to let a master find out which devices are=20 present on the bus using the Rom Search algorithm. So even if the master do= es=20 not have prior knowledge about the the serial numbers of the devices that a= re=20 connected to it's 1-wire bus, using the Rom Search algorithm and the unique= =20 serial numbers it can find this information. There are even some new temperature sensors that uses an extra wire which c= an=20 be used to find out in which physical order the sensors are located on the = bus. /Ruben =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D Ruben J=F6nsson AB Liros Electronic Box 9124, 200 39 Malm=F6, Sweden TEL INT +46 40142078 FAX INT +46 40947388 ruben@pp.sbbs.se =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .