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PCAGPIO(4)               BSD Kernel Interfaces Manual               PCAGPIO(4)

NAME
     pcagpio -- Philips PCA955[4567] GPIO controller

SYNOPSIS
     pcagpio* at iic?
     gpio* at pcagpio?

DESCRIPTION
     The pcagpio driver provides support for the Philips PCA955[4567] GPIO
     controllers.  The PCA955[467] devices have 8 pins and the PCA9555 device
     has 16 pins which can be configured as either inputs or outputs, and
     accessed using gpioctl(8).

SEE ALSO
     gpio(4), iic(4), intro(4), gpioctl(8)

HISTORY
     The pcagpio driver first appeared in OpenBSD 3.9.

AUTHORS
     The pcagpio driver was written by Theo de Raadt <deraadt@openbsd.org>.

BSD                             April 29, 2017                             BSD