Jump Drives as Data Recorders.

[Pavan Dave]

I remember a while back reading a topic on how you could attach a jump drive to your RC and collect data throughout matches giving you a better idea to isolate problems that may occur.

I was wondering if anyone could please guide me in that direction, because after searching CD, I am still where I started, Confused.

Thanks.

EDIT:Found the topic at last. Here. (http://www.chiefdelphi.com/forums/showthread.php?t=50717&highlight=data+log)

[ericand]

The thread that I recall talked about using an SD card mounted with a serial interface, using DOS on Chip. The thread is in the programming system and refers to a file system for the RC (from December 06). I found it again by looking for "DOS on Chip". The url of the forum page I found is:
http://www.chiefdelphi.com/forums/showthread.php?t=50205&highlight=DOS+on+chip

[Tom Bottiglieri]

If you dont need to save a lot of data you can use the dashboard and record on your laptop.

[JimGRobot]

I started the Chip DOS thread last year after doing some preliminary work with reading SD chips, I haven't tried writing to them yet, but it can be done.

I haven't worked on it since build-season started, but there is a bunch of info on a blog I started here: http://www.techranch.com/blog/

I hope to create a small code library that will make it easy to interface this with the RC, but this project is on a list with others... ;-)

Thanks,
Jim

[Pavan Dave]

I started the Chip DOS thread last year after doing some preliminary work with reading SD chips, I haven't tried writing to them yet, but it can be done.

I haven't worked on it since build-season started, but there is a bunch of info on a blog I started here: http://www.techranch.com/blog/

I hope to create a small code library that will make it easy to interface this with the RC, but this project is on a list with others... ;-)

Thanks,
Jim

Thanks for the help Jim. This is my summer project, trying to get one of the two devices listed on this thread to work so if I meet success I will try and post a white paper, but that is if I can get all the parts to do this.

Pavan.

[Gdeaver]

Jump drives involve usb. SD cards need SPI. Perhaps the easy way to add SD card data storage and logging to the FRC is to use a PIC 18 as a interface between the FRC and SD card. Use the pic to take a ttl serial from the FRC and the massage it and send It out the SPI hardware port. If you look at this link This PIC chip has all the libraries done for you to interface to the SD card and there are high level serial functions to handle the FRC side.
http://kronosrobotics.com/Projects/MMC.pdf
Take a look at the Kronos site while your at it. The Dios chip language provides a large library of functions and routines that handle the low level stuff.