60 lines
1.7 KiB
Groff
60 lines
1.7 KiB
Groff
.TH EEPROMREAD 1
|
|
.SH NAME
|
|
eepromread \- read data from an EEPROM
|
|
.SH SYNOPSIS
|
|
\fBeepromread\fR [\fB\-i\fR] [\fB\-f\fR \fIdev\fR] [\fB\-a\fR \fIslave_addr\fR]
|
|
[\fB\-n\fR]
|
|
.br
|
|
.de FL
|
|
.TP
|
|
\\fB\\$1\\fR
|
|
\\$2
|
|
..
|
|
.de EX
|
|
.TP 20
|
|
\\fB\\$1\\fR
|
|
# \\$2
|
|
..
|
|
.SH OPTIONS
|
|
.TP 5
|
|
.B \-i
|
|
# interpret the data on the EEPROM and display it as a set of fields.
|
|
.TP 5
|
|
.B \-f
|
|
# Use \fIdevice\fR instead of \fI/dev/i2c-1\fR.
|
|
.TP 5
|
|
.B \-a
|
|
# Use \fIslave_address\fR instead of \fI0x50\fR.
|
|
.TP 5
|
|
.B \-n
|
|
# Do not send the page number when addressing the memory on the EEPROM. Some
|
|
smaller EEPROM chips aren't organized into pages and get confused if a page
|
|
number is sent with the memory address. Use this when reading EDID.
|
|
.SH EXAMPLES
|
|
.TP 20
|
|
.B eepromread -i
|
|
# display the contents of the EEPROM as a list of label:value pairs.
|
|
.TP 20
|
|
.B eepromread
|
|
# display the first 256 bytes of the EEPROM in HEX and ASCII.
|
|
.TP 20
|
|
.B eepromread -f /dev/i2c-3 -a 0x54
|
|
# display the first 256 bytes of the EEPROM on I2C bus 3, slave address 0x54.
|
|
.TP 20
|
|
.B eepromread -f /dev/i2c-3 -n
|
|
# read the EDID info from the display on I2C bus 3 on the BeagleBoard-xM.
|
|
.TP 20
|
|
.B eepromread -f /dev/eepromb1s50 -i
|
|
# access the EEPROM through the /dev/eeprom interface once the
|
|
cat24c256 driver has been started.
|
|
.SH DESCRIPTION
|
|
.PP
|
|
\fIeepromread\fR is a simple tool for viewing the contents of an EEPROM.
|
|
For EEPROM data that is in a specific format that this program knows how to
|
|
detect, \fIeepromread\fR can properly format each of the fields and display
|
|
the information via the \fI-i\fR command line option.
|
|
.SH NOTES
|
|
If the \fIcat24c256\fR driver has claimed the EEPROM device that this
|
|
program is attempting to read from, then you must access it through
|
|
the /dev/eeprom interface rather than the /dev/i2c interface.
|