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.\"
.\" eeprog.8 - manpage for the i2c-tools/eeprog utility
.\" Copyright (C) 2013 Jaromir Capik
.\"
.\" This program is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License as published by
.\" the Free Software Foundation; either version 2 of the License, or
.\" (at your option) any later version.
.\"
.\" This program is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public License along
.\" with this program; if not, write to the Free Software Foundation, Inc.,
.\" 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
.\"
.TH eeprog "8" "Jul 2013" "i2c-tools" "System Administration"
.SH NAME
eeprog \- reads and writes 24Cxx EEPROMs connected to I2C serial bus
.SH SYNOPSIS
.B eeprog
[-fqxdh] [-16|-8] [-r addr[:count]|-w addr] <device> <i2c-addr>
.SH DESCRIPTION
.B eeprog
uses the SMBus protocol used by most of the recent chipsets.
.SH NOTE
Don't forget to load your i2c chipset and the i2c-dev drivers.
.P
The following environment variables could be set instead of the command line arguments:
.P
EEPROG_DEV device
.br
EEPROG_I2C_ADDR i2c-addr
.SH PARAMETERS
.I Address modes
.TP
.B \-8
Use 8bit address mode for 24c0x...24C16 [default]
.TP
.B \-16
Use 16bit address mode for 24c32...24C256
.TP
.I Actions
.TP
.B \-r addr[:count]
Read
.B count
(1 if omitted) bytes from
.B addr
and print them to the standard output
.TP
.B \-w addr
Write input (stdin) at address
.B addr
of the EEPROM
.TP
.B \-h
Print this help
.TP
.I Options
.TP
.B \-x
Set hex output mode
.TP
.B \-d
Dummy mode, display what *would* have been done
.TP
.B \-f
Disable warnings and don't ask confirmation
.TP
.B \-q
Quiet mode
.TP
.I Bus
.TP
.B device
Device file representing the I2C bus (eg. /dev/i2c-0)
.TP
.B i2c-addr
I2C bus address of the EEPROM (eg. 0x3A)
.SH EXAMPLES
Read 64 bytes from the EEPROM at address 0x54 on bus 0 starting at address 123 (decimal)
.P
.B eeprog
/dev/i2c-0 0x54 -r 123:64
.P
Print the hex codes of the first 32 bytes read from bus 1 at address 0x22
.P
.B eeprog
/dev/i2c-1 0x51 -x -r 0x22:0x20
.P
Write the current timestamp at address 0x200 of the EEPROM on bus 0 at address 0x33
.P
date |
.B eeprog
/dev/i2c-0 0x33 -w 0x200
.SH SEE ALSO
.BR eeprom (8),
.BR eepromer (8)
.SH AUTHOR
Stefano Barbato
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