Hi friends,=20

I develop a datalogger with a MMC card for our special purpose. There is
implemented FAT syst=E9m (not fully, but most of it). I am not able to
solve one problem. When writing operation to root directory is broken
before finishing and it can hap anytime pulling a card out,  I am not
able to find a way how to repair the defected sector. Rewriting such
sector from a PIC ends with endless loop of busy signal. I am not able
to format the card in a PDA because Windows CE doesn't accept by this
way damaged card. =20
I wasn't able to find any appnotes discussed error recovery of MMC cards
as well as a detailed instructions how to erase a sector or block of
sectors.=20
Use SPI mode for communication to MMC/SD card.=20
I appreciate any help.=20

Thanks=20

Igor=20

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics