SD/MMC Card with PIC18F4550 using ELM CHAN's FATfs?

[xpress_embedo]

Hello!!! Everyone,

I want to interface memory card with PIC18F4550, which must support a file system in it (FAT16 at least).

I found ELM Chan's FAT file system as open source and only low level disk input out functions has to be written, i am aware of SPI Protocol and read how mmc/sd card works from different materials collected from different site.

So can any one help me in porting this fat file system with mine.
And i also want to know it is possible to do so (Please dont suggest Petit FAT file system, i want to know if this is possible or not).

 

[embpic]

hello sir do you have done this implementation??
bcoz now i am getting problem over this

 

[xpress_embedo]

No, i used Petit FAT File system, but using that i am not able to write any thing in memory card.
Only read mode.

 

[paulfjujo]

hello,


I did some test on "Petite Fat" with a SD card 2Go , preformatted with a PC as FAT32
I can read and write files on this card.
I use a PIC18F46K22 witch has a large amount of RAM
and modify the linker file to have a bigbuffer of 512 bytes
My Card don' t have a "presence Card" status info..

more info **broken link removed**

Now, i included SDCard software in my application EDFinfo
to save data online. and to optimise the transfert i also use EEPROM 1Ko
as intermediate storage before to write to SDcard.