lmtemp(4) - NetBSD Manual Pages

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LMTEMP(4)               NetBSD Kernel Interfaces Manual              LMTEMP(4)


NAME

     lmtemp -- National Semiconductor LM75, LM77 and compatible hardware moni-
     tors


SYNOPSIS

     lmtemp0 at iic? addr 0x48 flags 0x0000


DESCRIPTION

     The lmtemp driver provides support for the National Semiconductor LM on
     iicbus series temperatures and register compatible chips to be used with
     the envsys(4) API.  The lmtemp supports ranges of the temperature between
     +125 from -55.

     Each device is specified by the value of the address and flags.

           Temperature    addr             flags
           LM75           0x48 - 0x4f      0x0000
           DS75           0x48 - 0x4f      0x0001
           LM77           0x48 - 0x4b      0x0002


HARDWARE

     Chips supported by the lmtemp driver include:

           National Semiconductor LM75

           National Semiconductor LM77

           Dallas Semiconductor DS75


SEE ALSO

     envsys(4), envstat(8)


HISTORY

     The lmtemp device appeared in NetBSD 4.0.


BUGS

     Interrupt support is unimplemented.

NetBSD 6.1.2                     April 4, 2008                    NetBSD 6.1.2