Re: [avr-chat] Serial Numbers with avrdude (or other?)

[Ned Konz]

On Sep 14, 2005, at 11:21 AM, Joerg Wunsch wrote:

> "E. Weddington" <address@hidden> wrote:
>
> > I would strongly suggest looking at the SRecord utilities.
>
> I think his point was to avoid calling another utility, and have
> avrdude write something directly to a certain memory location.
>
> Otherwise you're right, if you want to use a separate load file, it's
> quite easy.  It doesn't even need srecord-style tools, it probably
> takes some kind of scripting language to manage the serial number
> database anyway, so that scripting language could as well drop out an
> ihex file directly.

Here's a little perl program that generates a single S3 record at a  
given address.

So for instance, if you wanted the serial number 1234 embedded as a 4- 
byte little-endian value at address 0x800000, you'd do:
$ perl srecord.pl 0x800000 V 1234

and you'd get the single line:

S30900800000d2040000a9


It might be useful as an example, but I haven't tried it with avrdude.

srecord.pl
Description: Text Data