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Unread 04-09-2007, 01:18
Tom Bottiglieri Tom Bottiglieri is offline
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Re: Can the robot read a text file?

Quote:
Originally Posted by Greg Marra View Post
Do you know what teams have done it? I know people who have implemented reading from SD cards on PICs before, but not on FIRST robots, and I would love to find out how their procedure works.
If I remember correctly, SD/MMC cards run on an SPI connection. The IFI RC is using SPI on the user processor for something else.

This could be fixed by using an auxiliary PIC (although I would prefer an AVR.. woo GCC!), connecting the card via SPI, and using a serial connection between the aux board and the IFI controller. Also, I suppose if you wanted to get really fancy, you could emulate SPI by bit banging through the available i/o.