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LMENV(4)                     Device Drivers Manual                    LMENV(4)

NAME
     lmenv - National Semiconductor LM81, LM87, and compatible hardware
     monitors

SYNOPSIS
     lmenv0 at iic0 addr 0x2c: ADM9240 rev 2

DESCRIPTION
     The lmenv driver provides support for the National Semiconductor LM87,
     National Semiconductor LM81, Analog Devices ADM9240, and Dallas
     Semiconductor DS1780 iicbus hardware monitors.  Sensor values are
     reported through the envstat(8) interface.

     The lmenv supports the following voltage, temperature, and fan speed
     sensors:

           Sensor       Type
           +2.5Vin      Volts DC
           Vccp1        Volts DC
           +Vcc         Volts DC
           +5Vin/Vcc    Volts DC
           +12Vin       Volts DC
           Vccp2        Volts DC
           External     Temperature
           Internal     Temperature
           FAN1         Speed
           FAN2         Speed
     On the LM87 monitor, AIN1 and AIN2 Volts DC sensors may replace either,
     or both of the FAN1 and FAN2 speed sensors, respectively.

SEE ALSO
     envsys(4), envstat(8)

HISTORY
     The lmenv driver first appeared in OpenBSD 3.9.  NetBSD support was added
     in NetBSD 7.0.

AUTHORS
     The lmenv driver was written for OpenBSD by Mark Kettenis
     <kettenis@openbsd.org>, and ported to NetBSD by
     Julian Coleman <jdc@NetBSD.org>.

BUGS
     High and low sensor limits are not supported.

     Interrupt support is not implemented.

NetBSD 10.99                   October 14, 2013                   NetBSD 10.99