mmc card help

aruna1 · Joined: 14 Oct 2008 Posts: 103

Hi guys
I'm trying to write a file to a mmc card (using Proteus).
I haven't done this before. I found lot of codes and few examples but couldn't understand them.
So can someone please post a small code that will simply create a text file on root directory of mmc and with some content in it? So I will be able to follow it
Thank you.

bkamen · Posted: Thu Dec 02, 2010 11:45 pm

This is not a simple task. Your best bet is to download Microchip's free library that handles using FAT on SD/MMC media.

It comes with a help .CHM file that explains all the libraries.

Next, get online and google "fat file system" and look at the various websites that explain it. (Wikipedia isn't a bad place to start.)

You'll also want to download SanDisk's SD/MMC card specification...

Have fun!

-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D

bkamen · Posted: Thu Dec 02, 2010 11:48 pm

p.s. Proteus is a SIMULATOR... written in software... software has bugs.

Do not be surprised when your code in proteus doesn't work quite right.

In fact, you can download and write you code in MPLAB which has a free simulator written by the company that makes the processors(!). If anyone has the most at stake to make their simulator most closely emulate their bread'n'butter products, it's Microchip.

Ultimately, HARDware needs to be built and TESTed before anything can be considered working properly.

Cheers,

-Ben
_________________
Dazed and confused? I don't think so. Just "plain lost" will do. :D