NAME

onewire —

1-Wire bus

SYNOPSIS

onewire* at gpioow?
onewire* at uow?
onewire* at ioc? (sgi)
onewire* at xheart? (sgi)

option ONEWIREVERBOSE

DESCRIPTION
SUPPORTED MASTERS
SUPPORTED SLAVES
SEE ALSO
HISTORY
AUTHORS

DESCRIPTION

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.

SUPPORTED MASTERS

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

SUPPORTED SLAVES

owctr(4): 1-Wire counter device
owid(4): 1-Wire ID device
owmac(4): 1-Wire Ethernet address
owsbm(4): 1-Wire smart battery monitor device
owserial(4): 1-Wire serial number
owtemp(4): 1-Wire temperature device

HISTORY

The onewire driver first appeared in OpenBSD 4.0.

AUTHORS

The onewire driver was written by Alexander Yurchenko <grange@openbsd.org>.

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