1.\" $OpenBSD: ecadc.4,v 1.4 2013/07/16 16:05:49 schwarze Exp $ 2.\" 3.\" Copyright (c) 2006 Damien Miller <djm@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: July 16 2013 $ 18.Dt ECADC 4 sparc64 19.Os 20.Sh NAME 21.Nm ecadc 22.Nd environmental monitoring subsystem temperature sensor 23.Sh SYNOPSIS 24.Cd "ecadc* at iic?" 25.Sh DESCRIPTION 26The 27.Nm 28driver supports the PCF8591 I2C analog to digital converter that is 29part of the environmental monitoring subsystem found on the Sun 30Enterprise 250 and Sun Enterprise 450 systems. 31The temperature readings are made available through the 32.Xr sysctl 8 33interface. 34.Pp 35The driver reads up to four A/D lines configured as temperature inputs. 36Sensor names, type and calibration information are read from OpenFirmware. 37.Sh SEE ALSO 38.Xr iic 4 , 39.Xr intro 4 , 40.Xr pcfadc 4 , 41.Xr sensorsd 8 , 42.Xr sysctl 8 43.Sh HISTORY 44The 45.Nm 46driver first appeared in 47.Ox 4.3 . 48.Sh AUTHORS 49.An -nosplit 50The 51.Nm 52driver was written by 53.An Mark Kettenis Aq Mt kettenis@openbsd.org 54based on the 55.Xr pcfadc 4 56driver written by 57.An Damien Miller Aq Mt djm@openbsd.org . 58