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Altera_Forum's avatar
Altera_Forum
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15 years ago

Configuration from SD card

Hi, Does anyone know solutions to configure FPGAs from SD card? It must be either of the below. I prefer the latter one, but information of any other solutions will be appreciated. (1) A...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi gee,

Probably you have already done this: a good starting point is download the SD card simplified specification from www.sdcard.org and read it.

Here you'll easily find the basic commands to detect SD card type, initialize it and write/read data.

I started this way and in less than two days I built my application from scratch, complete with file system (I used FatFs open source module). My task was easier, since I accessed SD card through Nios and spi port; so it was simply a matter of sending the right command sequences.

With a CPLD it will be much more challenging. Good luck!

Cris