eeprom(8) [centos man page]

eeprom(8)						       System Administration							 eeprom(8)

NAME

       eeprom - reads and writes 24Cxx EEPROMs connected to I2C serial bus.

SYNOPSIS

       eeprom [-d dev] [-a adr] [-p pgs] [-w] [-y] [-f file]

DESCRIPTION

       eeprom  can  be	used  for reading from / writing to i2c-eeproms like the popular 24C16, 24C08, 24C04, etc.  In contrast to eeprommer which
       supports 24C256-type eeproms (24C16s) this tool works with 1-byte addresses!

NOTE

       Don't forget to load your i2c chipset and the i2c-dev drivers.

       Pages/addresses:
	   eeproms with more than 256 bytes appear as if they
	   were several eeproms with consecutive addresses on the bus
	   so we might as well address several separate eeproms with
	   increasing addresses

PARAMETERS

       dev    device, e.g. /dev/i2c-0	 (def)

       adr    base address of eeprom, eg 0xA0 (def)

       pgs    number of pages to read, eg 8 (def)

       -w     write to eeprom (default is reading!)

       -y     suppress warning when writing (default is to warn!)

       -f file
	      copy eeprom contents to/from file (default for read is test only; for write is all zeros)

SEE ALSO

       eeprog(8) eepromer(8)

AUTHOR

       Christian Vogel <chris@hedonism.cx>

i2c-tools							     Jul 2013								 eeprom(8)

EEP24C(1)						      General Commands Manual							 EEP24C(1)

NAME

       eep24c - read and write 24Cxxx eeprom devices

SYNOPSIS

       eep24c -d device [ -r[n] filename | -w[n] filename | -k[n] filename | -f[n] xx ]

DESCRIPTION

       The command eep24c can be used to read and write 24Cxxx eeprom devices.

OPTIONS

       The following options are available:

       -d device
	      Specify the device type. To see a list of the supported devices, try -d help

       -r filename
	      Read from eeprom and save to a file.

       -w filename
	      Read from a file and write to eeprom.  The addresses not specified in the input file will be filled with 00.

       -k filename
	      Read  from  a  file and write to eeprom.	The addresses not specified in the input file will be kept with its previous values. (this
	      mode is twice slower. It reads whole memory to know previous values, then write whole memory)

       -f XX  Fills the whole eeprom with XX (XX is an hexadecimal value)

       n      Can be used to multiply clock time. If you have a long cable, you may use this option. Example: -r5 will read eeprom 5 times  slower
	      (pulse width will be standard value multiplied by 5). Valid range for n is from 1 to 50.	Default value is 1.

USAGE EXAMPLES

       eep24c -d 24c04 -r file.hex
	      read eeprom, write to file.hex

       eep24c -d 24c04 -r3 file.hex
	      read eeprom, write to file.hex, 3 times slower.

       eep24c -d 24c04 -w file.hex
	      read file.hex and write to eeprom. All the bytes not found in file.hex will be written as 00.

       eep24c -d 24c04 -k file.hex
	      read file.hex and write to eeprom. All the bytes not found in file.hex will remain unchanged.

       eep24c -d 24c04 -f 7A
	      fill eeprom with 7A (hexadecimal).

INPUT AND OUTPUT FORMAT

       Input and output file format is Intel Hexadecimal Object File Format
       You can find this specification at
       ftp://download.intel.com/support/processors/
       i960/devtools/INTELHEX.PDF
       Record  types  00  and 01 are implemented in this version.  In input lines, LF and CR+LF are accepted as newline markers.  Output files are
       generated with LF as a newline marker.

DEVICE SPECIFIC

       If you are using Microchip 24*515, you must tie its pin A2 to VCC (needs a hardware modification, see device datasheet).

SEE ALSO

       ihex2txt(1), txt2ihex(1).

AUTHOR

       This manual page was written by Pedro Zorzenon Neto <pzn@vztech.com.br>.

								    2002-11-14								 EEP24C(1)