root/lm-sensors/tags/V2-10-4/lib/libsensors.3

.\" Copyright 1998, 1999 Adrian Baugh <adrian.baugh@keble.ox.ac.uk>
.\" based on sensors.h, part of libsensors by Frodo Looijaard
.\" libsensors is distributed under the GPL
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.\" References consulted:
.\"     libsensors source code
.TH libsensors 3  "October 2006" "" "Linux Programmer's Manual"
.SH NAME
libsensors \- publicly accessible functions provided by the sensors library
.SH SYNOPSIS
.nf
.B #include <sensors/sensors.h>

.B int sensors_init(FILE *input);
.B void sensors_cleanup(void);
.B int sensors_parse_chip_name(const char *orig_name,
                            \fBsensors_chip_name *res);\fP
.B int sensors_match_chip(sensors_chip_name chip1, 
                       \fBsensors_chip_name chip2);\fP
.B int sensors_chip_name_has_wildcards(sensors_chip_name chip);
.B const char *sensors_get_adapter_name(int bus_nr);
.B int sensors_get_label(sensors_chip_name name, int feature, 
                      \fBchar **result);\fP
.B int sensors_get_feature(sensors_chip_name name, int feature,
                        \fBdouble *result);\fP
.B int sensors_set_feature(sensors_chip_name name, int feature,
                        \fBdouble value);\fP
.B int sensors_do_chip_sets(sensors_chip_name name);
.B extern int sensors_do_all_sets(void);
.B const sensors_chip_name *sensors_get_detected_chips(int *nr);
.B const sensors_feature_data *sensors_get_all_features 
             \fB(sensors_chip_name name, int *nr1,int *nr2);\fP
.fi
.SH DESCRIPTION
.B int sensors_init(FILE *input);
.br
(Re)load the configuration file and the detected chips list. If this returns a value unequal to zero, you are in trouble; you can not assume anything will be initialized properly.

.B void sensors_cleanup(void);
.br
Clean-up function: You can't access anything after this, until the next sensors_init() call!
.br

\fBint sensors_parse_chip_name(const char *orig_name,
                            sensors_chip_name *res);\fP
.br
Parse a chip name to the internal representation. Return 0 on succes, <0 on error.

\fBint sensors_match_chip(sensors_chip_name chip1,
                       sensors_chip_name chip2);\fP
.br
Compare two chips name descriptions, to see whether they could match. Return 0 if it does not match, return 1 if it does match.

\fBint sensors_chip_name_has_wildcards
    (sensors_chip_name chip);\fP
.br
Check whether the chip name is an 'absolute' name, which can only match one chip, or whether it has wildcards. Returns 0 if it is absolute, 1 if there are wildcards.

.B const char *sensors_get_adapter_name(int bus_nr);
.br
This function returns the adapter name of a bus number, as used within the
sensors_chip_name structure. If it could not be found, it returns NULL.

.B const char *sensors_get_algorithm_name(int bus_nr);
.br
This function used to return the algorithm name of a bus number.
It is now deprecated and returns an arbitrary string. It will be dropped
in a later version of the library so you should stop using it.

\fBint sensors_get_label(sensors_chip_name name, int feature,
                      char **result);\fP
.br
Look up the label which belongs to this chip. Note that chip should not contain wildcard values! *result is newly allocated (free it yourself). This function will return 0 on success, and <0 on failure.

\fBint sensors_get_feature(sensors_chip_name name,
                        int feature, double *result);\fP
.br
Read the value of a feature of a certain chip. Note that chip should not contain wildcard values! This function will return 0 on success, and <0 on failure.

\fBint sensors_set_feature(sensors_chip_name name,
                        int feature, double value);\fP
.br
Set the value of a feature of a certain chip. Note that chip should not contain wildcard values! This function will return 0 on success, and <0 on failure.

.B int sensors_do_chip_sets(sensors_chip_name name);
.br
Execute all set statements for this particular chip. The chip may contain wildcards!  This function will return 0 on success, and <0 on failure.

.B int sensors_do_all_sets(void);
.br
Execute all set statements for all detected chips. This is the same as calling sensors_do_chip_sets with an all wildcards chip name

\fBconst sensors_chip_name *sensors_get_detected_chips
                        (int *nr);\fP
.br
This function returns all detected chips, one by one. To start at the beginning of the list, use 0 for nr; NULL is returned if we are at the end of the list. Do not try to change these chip names, as they point to internal structures! Do not use nr for anything else.

This structure is used when you want to get all features of a specific chip.
.br
\fBtypedef struct sensors_feature_data {
.br
  int number;
.br
  const char *name;
.br
  int mapping;
.br
  int unused;
.br
  int mode;
.br
} sensors_feature_data;\fP
.br
The mode field can be one of:
.br
SENSORS_MODE_NO_RW, SENSORS_MODE_R, SENSORS_MODE_W or SENSORS_MODE_RW.

\fBconst sensors_feature_data *sensors_get_all_features
      (sensors_chip_name name, int *nr1,int *nr2);\fP
.br
This returns all features of a specific chip. They are returned in bunches: everything with the same mapping is returned just after each other, with the master feature in front (that feature does not map to itself, but has SENSORS_NO_MAPPING as mapping field). nr1 and nr2 are two internally used variables. Set both to zero to start again at the begin of the list. If no more features are found NULL is returned. Do not try to change the returned structure; you will corrupt internal data structures.


.SH "CONFORMING TO"
lm_sensors-2.x
.SH SEE ALSO
sensors.conf(5)

.SH AUTHOR
Frodo Looijaard and the lm_sensors group
http://www.lm-sensors.org/