Okay, that makes sense, but now I have no idea what is happening. I am writing data in 50 byte chunks to a single page in flash (which I erase before writing). After each write I call sync(). The first 4 writes seem to work as intended (when I read the page, the flash is all 1s after the data I have written). After the 5th write, though 6 bytes of garbage are appended (page offsets 250-255). Do you know why this might be happening. I have verified that when I call PageEEPROM.write(), the "size" value is, in fact, 50.
Thanks, Jacob On 2/6/07, David Gay <[EMAIL PROTECTED]> wrote:
On 2/6/07, Jacob Sorber <[EMAIL PROTECTED]> wrote: > I am seeing some bizarre behavior, and I suspect that it is due to my not > understanding exactly what these two functions do. I have not been able to > find any documentation on the subject, so any help would be great. flush starts writing the specified page to flash and signals completion "immediiately" (well, before the write completes). sync does the same thing, but only signals completion when the write is complete. Note that the pages are handled like a cache, so may be flushed anyway because of subsequent reads or writes. But if you want to ensure data is written, you do need to call sync or flush. David Gay
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