onewire —
1-Wire bus
onewire* at gpioow?
onewire* at uow?
onewire* at ioc? (sgi)
onewire* at xheart? (sgi)
option ONEWIREVERBOSE
1-Wire bus was originally developed by Dallas Semiconductor for connecting
integrated circuits. It is commonly used for connecting devices such as
electronic keys, EEPROMs, temperature sensors, real-time clocks, security
chips, etc.
The
onewire driver provides a uniform
programming interface layer between 1-Wire master controllers and various
1-Wire slave devices. Each 1-Wire master controller attaches a
onewire framework; several slave devices
can then be attached to the
onewire bus.
The driver supports plugging and unplugging slave devices on the fly.
- gpioow(4)
- 1-Wire bus bit-banging through GPIO pin
- ioc(4)
- IOC3 generic workstation I/O device
- uow(4)
- Maxim/Dallas DS2490 USB 1-Wire adapter
- xheart(4)
- Octane core system widget
intro(4)
The
onewire driver first appeared in
OpenBSD 4.0.
The
onewire driver was written by
Alexander Yurchenko
<
grange@openbsd.org>.
![[OpenBSD]](/openbsd.gif){kind=small}