How to find the address of stored data on a SD memory card?

[rsocor01]

Well, what I have been working on is a data logging project that loads the data into a SD card. In this project, the user can interface with the system using a graphic LCD display and data is constantly loaded into the 2GB card. So, I thought that instead of having to remove the SD card all the time to be able to read its contents, it would be very nice been able to read the SD card using a USB connection and read the whole thing like a thumbdrive. There are many devices out there in the market that perform a similar function, like for example your photo camera.

An easy way to achieve this seems to be using the FTDI Vinculum VDIP1 modules. BrianT explains how to set this chip up in the next thread.

http://www.picbasic.co.uk/forum/showthread.php?t=7700

I've just been trying to stay away from adding more chips to my circuit but probably the FTDI Vinculum is the best way to go for the project that I am working on. At least, it seems to be the easiest way.

Robert

[mackrackit]

Yes, SDFS can be used for reading a file and send that info out. It can be done serially so if you know how to use USB then it shoulf also work with that.

In my opinion for data logging stay away from the VDIP stuff and use a SD card.
I spent more time trying to use the VDIP than I did learning to use SDFS.

So, in the SDFS docs look at SDFS_READ command.