diff options
| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 14:02:27 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 14:02:27 -0400 |
| commit | 6d8bdc65446a704d0750217efd05532fc641ea7d (patch) | |
| tree | 8ae6d698b3c9801750a8b117b3842fb369872a3a /static/openbsd/man4/gpioow.4 | |
| parent | 2f467bd7ff8f8db0dafa40426166491d7f57f368 (diff) | |
docs: OpenBSD Man Pages Added
Diffstat (limited to 'static/openbsd/man4/gpioow.4')
| -rw-r--r-- | static/openbsd/man4/gpioow.4 | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/static/openbsd/man4/gpioow.4 b/static/openbsd/man4/gpioow.4 new file mode 100644 index 00000000..8c888745 --- /dev/null +++ b/static/openbsd/man4/gpioow.4 @@ -0,0 +1,66 @@ +.\" $OpenBSD: gpioow.4,v 1.7 2013/07/16 16:05:48 schwarze Exp $ +.\" +.\" Copyright (c) 2006 Alexander Yurchenko <grange@openbsd.org> +.\" +.\" Permission to use, copy, modify, and distribute this software for any +.\" purpose with or without fee is hereby granted, provided that the above +.\" copyright notice and this permission notice appear in all copies. +.\" +.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +.\" +.Dd $Mdocdate: July 16 2013 $ +.Dt GPIOOW 4 +.Os +.Sh NAME +.Nm gpioow +.Nd 1-Wire bus bit-banging through GPIO pin +.Sh SYNOPSIS +.Cd "gpioow* at gpio? offset 0 mask 0x1" +.Cd "gpioow* at gpio?" +.Cd "onewire* at gpioow?" +.Sh DESCRIPTION +The +.Nm +driver allows bit-banging a 1-Wire bus as a master using one GPIO pin. +The pin is used as a data signal. +The GPIO pin must be able to drive an output and read an input. +.Pp +The pin number can be specified in the kernel configuration with the +.Ar offset +locator. +The +.Ar mask +locator should always be 0x1 in this case. +The +.Ar offset +and +.Ar mask +can also be specified when +.Nm +is attached at runtime using the +.Dv GPIOATTACH +.Xr ioctl 2 +on the +.Xr gpio 4 +device. +.Sh SEE ALSO +.Xr gpio 4 , +.Xr intro 4 , +.Xr onewire 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 . |