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PCALED(4) Device Drivers Manual PCALED(4)

pcaledPhilips PCA9532/PCA9552 GPIO LED dimmer

pcaled* at iic?
gpio* at pcaled?

The pcaled driver provides support for the Philips PCA9532 and PCA9552 GPIO controllers which are specifically optimized to dim LEDs in 256 discrete steps.

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

The pcaled driver was written by Dale Rahn ⟨drahn@openbsd.org⟩.

May 29, 2008 OpenBSD-5.1