Re: [avr-gcc-list] Macro to read /write long to eeprom

[Royce Pereira]

Hi,

On Wed, 10 Aug 2005 14:57:57 +0530, Peter Bosscha <address@hidden>  
wrote:

> Ok, let's try to be more clear about this ..
> Structure size is say 1000 Bytes, when writing the entire structure the  
> write time would therefore be 9mSec * 1000 = 9 Seconds.
> Typically in our situation, parts of the structure change but other  
> parts stay the same (this is configuration data for a PLC-like device).
> When downloading the entire structure from a PC, quite a bit of eeprom  
> memory already contains the correct values.
> So instead of waiting 9 Seconds for a full structure update (and another  
> 9 seconds for a backup structure), we first read before write each byte,  
> typically saving us quite a lot of time.

Meaning if the eeprom already contains the said value, you skip writing  
that location?
Am I right?

--Royce.

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