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Altera_Forum's avatar
Altera_Forum
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14 years ago

Nios II hanging/crashing on PIO write?

I'm using a DE0-Nano board with a design which includes a NIOS II processor with a PIO module to flash the board's LEDs. No problems there - processor works, LEDs flash, jolly good. But, I...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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Are you passing in the base address of the PIO defined by system.h? If so I would look at the base address macro in system.h and compare it against what is shown in the Qsys UI to make sure they match.

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I have made sure that both the address specified in the Qsys and the system.h are same.

In my Qsys i have a 16 bit PIO which i configured it as bidirectional.Will it create any problem?