gpioow(4) - NetBSD Manual Pages

GPIOOW(4)               NetBSD Kernel Interfaces Manual              GPIOOW(4)


NAME
gpioow -- 1-Wire bus bit-banging through GPIO pin
SYNOPSIS
gpioow* at gpio? offset 0 mask 0x1 onewire* at gpioow?
DESCRIPTION
The gpioow 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. The pin number is specified in the kernel configuration with the offset locator. The mask locator should always be 0x1.
SEE ALSO
gpio(4), intro(4), onewire(4)
HISTORY
The gpioow driver first appeared in OpenBSD 4.0 and NetBSD 4.0.
AUTHORS
The gpioow driver was written by Alexander Yurchenko <grange@openbsd.org> and was ported to NetBSD by Jeff Rizzo <riz@NetBSD.org>. NetBSD 5.0.2 March 4, 2006 NetBSD 5.0.2

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