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Jean Delvare
4d095e0921
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2490 7894878c-1315-0410-8ee3-d5d059ff63e0
51 lines
1.8 KiB
Plaintext
51 lines
1.8 KiB
Plaintext
.TH I2CSET 8 "March 2004"
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.SH "NAME"
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i2cset \- set I\u2\dC registers
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.SH SYNOPSIS
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.B i2cset
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.I i2cbus
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.I chip-address
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.I data-address
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.I value
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.RI [ mode ]
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.SH DESCRIPTION
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i2cset is a small helper program to set registers visible through the I\u2\dC
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bus.
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.SH OPTIONS
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There are four required options to i2cset. \fIi2cbus\fR indicates the number
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of the I\u2\dC bus to be scanned. This number should correspond to one of
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the busses listed by \fIi2cdetect -l\fR. \fIchip-address\fR specifies the
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address of the chip on that bus, and is an integer between 0x00 and 0x7F.
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\fIdata-address\fR specifies the address on that chip to write to, and is an
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integer between 0x00 and 0xFF. \fIvalue\fR is the value to write to that
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location on the chip.
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.PP
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The \fImode\fR parameter, if specified, is one of the letters \fBb\fP or
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\fBw\fP, corresponding to a write size of a single byte or a 16-bit word,
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respectively. If the \fImode\fR parameter is omitted, i2cset defaults to byte
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mode. The \fIvalue\fR provided must be within range for the specified data
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type (0x00-0xFF for bytes, 0x0000-0xFFFF for words).
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.SH WARNING
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i2cset can be extremely dangerous if used improperly. It can confuse your
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I\u2\dC bus, cause data loss, or have more serious side effects. Writing to
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a serial EEPROM on a memory DIMM (chip addresses between 0x50 and 0x57) may
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DESTROY your memory, leaving your system unbootable! Be extremely careful
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using this program.
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.SH CONFORMING TO
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lm_sensors-2.x
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.SH SEE ALSO
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i2cdump(8), isaset(8)
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.SH AUTHOR
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Frodo Looijaard, Mark D. Studebaker, and the lm_sensors group
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http://www.lm-sensors.nu/
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This manual page was originally written by David Z Maze <dmaze@debian.org> for
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the Debian GNU/Linux system. It was then reviewed by the lm_sensors team and
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is now part of the lm_sensors source distribution.
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