1-Wire bus search algorithm, new C implementation

Ondřej Hruška cc979602f3 added some includes that should probably be in the header file		6 lat temu
.gitignore	code import	6 lat temu
LICENSE	Initial commit	6 lat temu
README.md	readme	6 lat temu
main.c	added some includes that should probably be in the header file	6 lat temu
ow_search.c	added checksum support	6 lat temu
ow_search.h	added some includes that should probably be in the header file	6 lat temu

1-Wire search algorithm

This project provides a reimplemented 1-Wire bus search algorithm (used to identify e.g. DS18x20 thermometers on a common open-drain bus).

The algorithm uses no global variables and allows finding a unlimited number of bus devices.

For an example of usage, see main.c.