Fill EEPROM with value, not from file

[jpka-]

Hello. I can write some first bytes of EEPROM like

-U eeprom:w:0xff,0xff:m

Is it possible to fill entire array with similar (short) command? I can't find it at man page. Like as these hypothetical commands:

-U eeprom:w:0xff,...:m
-U eeprom:w:0xff,...,0xff:m
-U eeprom:w:0xff:f

Thanks!

[stefanrueger]

-T "write eeprom 12 34 0xcc ..." fills 34 bytes of EEPROM at address 12 with 0xcc. Here a complete example

$ avrdude -qq -c dryrun -p m328p -T "write eeprom 12 34 0xcc ..." -t

avrdude> dump eeprom
0000  ff ff ff ff ff ff ff ff  ff ff ff ff cc cc cc cc  |................|
0010  cc cc cc cc cc cc cc cc  cc cc cc cc cc cc cc cc  |................|
0020  cc cc cc cc cc cc cc cc  cc cc cc cc cc cc ff ff  |................|
0030  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0040  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0050  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0060  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0070  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0080  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
0090  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00a0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00b0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00c0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00d0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00e0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
00f0  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|

avrdude> write -?
Syntax: write <mem> <addr> <data>[,] {<data>[,]}
        write <mem> <addr> <len> <data>[,] {<data>[,]} ... # Fill, see below
        write <mem> <data> # Any <data> incl file if memory has only 1 byte
        write <mem> <file> # Must be file if memory has more than 1 byte
Function: write data to memory; flash and EEPROM are normally cached

Ellipsis ... writes <len> bytes padded by repeating the last <data> item.

Both the <addr> and <len> can be negative numbers; a negative <addr> starts
an interval from that many bytes below the memory size; a negative <len> ends
the interval at that many bytes below the memory size.

<data> can be binary, octal, decimal or hexadecimal integers, floating point
numbers or C-style strings and characters. If nothing matches, <data> will be
interpreted as name of a file containing data. In absence of a :<f> format
suffix, the terminal will try to auto-detect the file format.

A file name that starts with urboot: autogenerates a bootloader file, try
write flash urboot:help

For more detail increase verbosity and rerun write -?

avrdude> quit

[jpka-]

Thanks so much @stefanrueger, it works exactly as i need.