Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

SD Card Core IP with Nios II - SD Card Detect Issue

Hello, I am having a problem getting my SD card to be detected using the core IP provided by Altera's University Program. I'm using the Nios II processor with Quartus 13.1 and Nios 13.1 Eclipse...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

The code checks the second bit of the auxiliary status register - the 'card detect' bit (you can check this in the IP core's VHDL file) - and returns true if there is a card inserted. You can check this in the debugger. From what I've read here, certain types of SD card don't work with this IP core though (more recent generations, ie SDHC type), so you might want to try a different card or IP core.

-N