SD or MMC card as storage for logging

[HYETİK]

I want to use 16,32 or 64 mb mmc or sd card to save log file and some constant and glcd image codes.

Do you help me about this problem.
I searched on internet but I only find MMC/SD card reader with RS-232 inteface. I dont want to use rs-232, I only use it as storage device for pic micro.

Another question:
can I change code inside the Pic, without programming it again. I heard that 18f series can do it but how??

Thanks for your helps

Hasan...

[Darrel Taylor]

I want to use 16,32 or 64 mb mmc or sd card to save log file and some constant and glcd image codes.

sdfs3.zip
http://melabs.com/resources/samples.htm

Requires an 18F PIC, PBP 2.50b using PBPL.

See the sdreadme.txt, and SDschem.pdf files in the zip.
<br>

[Chris Barron]

sdfs3.zip
http://melabs.com/resources/samples.htm

Requires an 18F PIC, PBP 2.50b using PBPL.

See the sdreadme.txt, and SDschem.pdf files in the zip.
<br>

I'll vouch for that !

I downloaded it, fully expecting to have to make some changes(other than pin assignments). I compiled the code and it worked the very first time .

What I would say in all seriousness though, is to check the pinout ever so carefully. Although in the schematic diagram the pic pins (via buffers) are wired to the correct SD card 'pins' you mut take care to note that the indented pin on the edge connector of the SD Card is pin number 9. You might then assume that next to it is pin 8, but no , the next pin along is pin 1

I took the indented pin to be pin 1 and the next pin to be 2, etc, and blew my first test SD card because there was a power reversal. (Pic was undamaged)

In summary, from the underside of the SD card with the pads exposed and the indent to the bottom, the pinout is like this..

8
7
6
5
4
3
2
1
~9


Other than that, the supporting code simply works as it should, many thanks to the author for that !

[HYETİK]

thanks for it I wil try
I will report the result

[SOMRU]

Hey there...
have been working on similar project,
check out

http://www.parallax.com/Store/Microc...me,ProductName

really cool device...

cheers

[mackrackit]

Hey there...
have been working on similar project,
check out

http://www.parallax.com/Store/Microc...me,ProductName

really cool device...

cheers

Tell me how you are going to stick an SD card into that?