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Altera_Forum
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15 years ago

IOWR and IORD with PIOs

I have a basic question concerning PIOs. Currently, I am sending 4 8-bit integers over 4 ouput PIOs from NIOS to hardware to do a calculation on them and return another 8-bit integer value. This is a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Like you already found out, I was going to suggest that you might still have some other problems with pointers. If you pass a pointer, you have to dereference the pointer in the code/macro/firmware before you can get the info that the pointer points to. You were probably getting the results of the addresses of the data, rather than the values of the data.