SFlash Writing target byte

[Anonymous]

I've been through the SFlash example and has success in applying the method to an application with small amounts of information, usually not even a rows worth, but now I'm looking at storing more information that's more dynamic in certain areas.  In the example, the writing function (WriteUserSFlashRow) accepts a row number and a 32-bit array pointer as parameters.  I'm don't really understand the inner-workings of the function, but was wondering if there were checks to not have to rewrite bytes in the row that weren't changed, or if there was a way to change/write to a specific byte(s) within a given row, or if you can only write an entire row at a time. If it makes any difference, I wouldn't want to write all 128u if I just want to change a few in a given row.

[Bob_Marlowe · Accepted solution]

The smallest amount to program flash is a row. You cannot reprogram only part of it, or you have to make a copy, insert your modified data and then erase & program that row again.

       

Bob

[Anonymous]

        Ok. Thank you. Would I have to erase, or would calling the function again just write over the existing data?   

[Bob_Marlowe]

Refer to the description of the function you want to use. Normally the erase and temperature measurement is done automatically.

       

Bob