man eep24c (Commandes) - read and write 24Cxxx eeprom devices
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
AUTHOR
This manual page was written by Pedro Zorzenon Neto <pzn@vztech.com.br>.