PCFADC(4) | Device Drivers Manual | PCFADC(4)

# NAME

`pcfadc` — Philips PCF8591 temperature sensor

# SYNOPSIS

`pcfadc* at iic?`

# DESCRIPTION

The `pcfadc` driver supports the PCF8591 I2C analog to digital converter, making its readings available through a sysctl(8) interface.

The driver reads up to four A/D lines configured as temperature inputs. Sensor names, type and calibration information are read from OpenFirmware.

# SEE ALSO

iic(4), intro(4), sensorsd(8), sysctl(8)

# HISTORY

The `pcfadc` driver first appeared in OpenBSD 3.9.

# AUTHORS

The `pcfadc` driver was written by Damien Miller <djm@openbsd.org>.

July 16, 2013 | Debian