how to set i/O

Altera_Forum · ‎12-14-2005

i have set one i/o pin to bidirectional(tri-state) I/O port,and finished the hardware compile.

but in the nios II IDE ,how to set the bidirectional(tri-state) I/O port to out por.what should i write in the programme?

thanks!

Altera_Forum · ‎12-14-2005

hi wbqyy,

The PIO has a direction register where you can define if its a in- or output. For accessing the PIO registers there are some macros from Altera. Take a look at this thread:

http://forum.niosforum.com/forum/index.php...pic=2978&hl=pio (http://forum.niosforum.com/forum/index.php?showtopic=2978&hl=pio)

regards

revolt

Altera_Forum · ‎12-15-2005

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originally posted by wbqyy@Dec 14 2005, 08:12 PM

i have set one i/o pin to bidirectional(tri-state) i/o port,and finished the hardware compile.

but in the nios ii ide ,how to set the bidirectional(tri-state) i/o port to out por.what should i write in the programme?

thanks!

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thanks

but i still have a few question

ihave write it with a new topic