Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org>
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.Dd $Mdocdate: May 3 2021 $ .Dt ONEWIRE 4 .Os .Sh NAME .Nm onewire .Nd 1-Wire bus .Sh SYNOPSIS .Cd "onewire* at gpioow?" .Cd "onewire* at uow?"
p .Cd "option ONEWIREVERBOSE" .Sh 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.
p The .Nm 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 .Nm framework; several slave devices can then be attached to the .Nm bus.
p The driver supports plugging and unplugging slave devices on the fly. .Sh SUPPORTED MASTERS l -tag -width 11n -offset ind -compact t Xr gpioow 4 1-Wire bus bit-banging through GPIO pin t Xr uow 4 Maxim/Dallas DS2490 USB 1-Wire adapter .El .Sh SUPPORTED SLAVES l -tag -width 11n -offset ind -compact t Xr owctr 4 1-Wire counter device t Xr owid 4 1-Wire ID device t Xr owsbm 4 1-Wire smart battery monitor device t Xr owtemp 4 1-Wire temperature device .El .Sh SEE ALSO .Xr intro 4 .Sh HISTORY The .Nm driver first appeared in .Ox 4.0 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Alexander Yurchenko Aq Mt grange@openbsd.org .