Memory access from Nios I

--- Quote Start ---

originally posted by banx@May 15 2006, 05:42 PM

hello fly,

i presume excalibur.h has given you an address for your block of user logic and has cast it to be a pointer to void like this na_mylogic ((void*) 0x0002010)

if your logic expects to be written and read in 32-bit wide accesses (ints) then just declare an integer pointer and make it point to your logic using a cast.

unsigned int *my_pointer = (unsigned int*)na_mylogic;

you could now use my_pointer to access your logic as if it were a memory array (of integers). you could easily modify the above to suit the width of your logic.

i hope this is what you were asking, and it is of some help.

banx.

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=15382)

--- quote end ---

--- Quote End ---

It&#39;s exactly what I was expecting ! but just one question : will the Nios automatically assert my read and write and chip_select signal correctly when I will write to it ? Moreover, when I have an interrupt from my logic, how can I clear the flag ? because i don&#39;t have anymore any pioedgecapture available !

thanx a lot for your help banx !

Flyjuju2