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Altera_Forum's avatar
Altera_Forum
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10 years ago

NiosII memory reservation

Hello guys, I have a system running a NiosII processor. In my Qsys system I have connected one port of a dual-port-onchipmem to the Nios data master port and the second port has been exported...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

So, 

#include <sys/alt_cache.h># include "system.h"# include <stdint.h>
volatile uint8_t * dataset_ptr = (volatile uint8_t*) alt_remap_uncached(ONCHIP_DATASET_DP_RAM_BASE,ONCHIP_DATASET_DP_RAM_SIZE_VALUE);

If I try to build the application I get this error on this function: 

Initializer element is not constant

What's wrong with that ??

It seems to be related to some C rules. If I put the alt_remap() into the main routine the error get solved. by the way I would prefer to have the dataset_ptr as a global variable. Is it possible ?

Ty,

have a nice day !