Sure! I'm out of town right now, but I'll see what I can do tomorrow when
I get back. I'm doing this on a pic32. What processor are you using?

Harold


> Harold,
>
> It sounds like similar to what I was thinking to do. Can you share the
> code?
> I just want to see how things are done. how do you keep track of counts
> and
> locate next log? are you using FAT file system?
>
> thanks
>
> Andre
>
>
>
> ________________________________
> From: Harold Hallikainen <harold@hallikainen.org>
> To: Microcontroller discussion list - Public. <piclist@mit.edu>
> Sent: Wed, March 30, 2011 8:18:27 PM
> Subject: Re: [PIC]: what's the best way  to save large data in flash
> memory
>
> I'm doing something like what you described. I'm suing a 2MB SPI flash to
> do logging in a system. I save 64 byte records sequentially. I keep track
> of the address I'm going to write the next record to. I have a function
> called FlashStreamProgram. I pass in the starting address, a pointer to
> the data I want to write, and the number of bytes to write. Every time th=
e
> FlashStreamProgram detects we have gone over a sector boundary and need t=
o
> erase, it does so before moving on. I pull the data back by reading an
> array similarly. When reading the log, I specify a log record number,
> which converts to an address, then gets the log record. On power up, when
> the system does not know where the next log record would go, it scans
> through memory starting from  the bottom looking for the first erased
> record (0xff in all bytes). It then uses this as its next llog address.
>
> Harold
>
>
>
>
>
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