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Altera_Forum
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17 years ago

Help:Cann't read or write EPCS in Nios II,why?

my system includes Flash,EPCS,etc,and has a EPCS controller.i want to read and write the EPCS in the nios.i tried to open the device using "alt_flash_open_dev()",but it's alway wrong--"can not open t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi,

include these files also,

#include "altera_avalon_epcs_flash_controller.h"

#include "sys/alt_flash.h"// used for EPCS

#include "sys/alt_flash_dev.h"// used for EPCS# include "sys/alt_sys_init.h"

you need to open the device using the name of the EPCS device, with the value stored in the system.h file, like below

// open flash device

pEPCS = alt_flash_open_dev(EPCS_CONTROLLER_NAME);

this is what is located in the generated system.h header,

#define epcs_controller_name"/dev/epcs_controller"