[avr-chat] Debugging contents of external SRAM (avrdude?)

[Juergen Harms]

I have recently augmented an application by adding external NV RAM 
(AT90CAN128, DS1244), using the NV RAM for data I - so far - kept in EEPROM.

For debugging/maintenance purposes it would be nice to have an easy way 
to - very occasionally - manually inspect/modify some few bytes of NV 
RAM storage - for instance to request an application to, at boot time, 
re-initialize the NV RAM from a template that is kept in flash memory.

Avrdude design restricts interactive access to a set of memory types 
which - for obvious reasons - does not include RAM (reasons that do not 
apply to external RAM). Did somebody come across this question and can 
suggest an easy-to-implement solution?

At present I consider to continue using eeprom to flag special actions 
that should be done at boot time (and where I can manipulate the flag 
with Avrdude) - would be more consistent if actions on SRAM could be 
flagged in SRAM.

Juergen