aslm
Advanced Member level 4
Hi Have a small question about SD cards, if anyone has worked with those...
I have written code to read write the card and a small FAT system is implemented.
I have no problem reading the cards and I can in almost all cases write to them as well. But in some rare ocations when I remove the card during a write the whole SD dies (users might do this so it must work).
The card reports as unformated when I try to read it on a windows PC and the most strange thing is that I cannot format it either. I have eaven tried to write to it byte by byte in my aplicaiton without succeding.
I would understand if the FAT or something gets messed up, but now I cant eaven accec the card. Any ideas about what I do wrong? The same has hapend to 3 SD cards in total until now.
All the communication is done in SPI mode so there is no "secure" part involved.
re Me
I have written code to read write the card and a small FAT system is implemented.
I have no problem reading the cards and I can in almost all cases write to them as well. But in some rare ocations when I remove the card during a write the whole SD dies (users might do this so it must work).
The card reports as unformated when I try to read it on a windows PC and the most strange thing is that I cannot format it either. I have eaven tried to write to it byte by byte in my aplicaiton without succeding.
I would understand if the FAT or something gets messed up, but now I cant eaven accec the card. Any ideas about what I do wrong? The same has hapend to 3 SD cards in total until now.
All the communication is done in SPI mode so there is no "secure" part involved.
re Me
