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Altera_Forum's avatar
Altera_Forum
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12 years ago

How to let FPGA get access to HPS pins

I've got an Arrow SOCkit and it has a USB-UART connected to the HPS' pins, but I'd like to access the UART from the FPGA logic. Is this possible? If so how is it done? Thank you!
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

You would need to boot from either QSPI or an SD card to get the HPS going.

SD Card: http://www.rocketboards.org/foswiki/documentation/gsrdsdcard

QSPI: http://www.rocketboards.org/foswiki/documentation/gsrdqspiboot

http://www.rocketboards.org/foswiki/documentation/gsrdqspiprogram

You do need to enable QSPI in Qsys, otherwise it will not work. Also, if you use the ByteBlaster on the JTAG, you can program the QSPI within the embedded command shell (steps 6 and 7 here: http://www.rocketboards.org/foswiki/documentation/gsrdqspiprogram). However, I've found using the SD card is a bit easier to start.

Which board are you using? Is it a custom board? The RocketBoards.org site has some pretty good examples on getting some of the dev boards going.