Accessing microSD card on a Shield

Other Hardware Storage
1

Short Story - -
I am interested in writing text files (or any file type) to the microSD card that is on my Shield. Then accessing the file and reading it back. No idea where to start.

Long Story - -
I have an adafruit Music Maker Shield and it has a microSD card on it for holding the mp3 files for playing. (My Wifi Shield also has a microSD card operation possible.) Is it possible to write files to the microSD card while it is in the Music Make Shield? Not just mp3 files, but any kind of file such as text? Then can I access the file and read the text back (maybe print on the Serial out)? Sorry I can’t say exactly why I want to do this, it was just given to me as a “see if this is possible” task.
I am not really sure if I would have to do this from within a sketch, or if I would do it through a programming tool or even serial connection?
How would I go about writing and reading a file on the microSD on a shield such as the adafruit Music Maker?

Thanks,

2

Doesn't Adafruit have documentation for their shield?

3

drew345:
Is it possible to write files to the microSD card while it is in the Music Make Shield? Not just mp3 files, but any kind of file such as text?

An SD is an SD and you should be able to write what you like. irrespective of where it is. The standard file write, file read, and filedump examples that come with the IDE should be all you need - particularly if it is text. About the only thing that can go wrong is that the chip select pin is something unusual. There may be jumpers to that effect. If you don't know what it is, try D4. That's the usual choice.

Oops. It is also possible that the slot will not work without a jumper or a solder bridge. Check the data sheet, or it may be written on the board.