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Altera_Forum
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12 years ago

Programming EPCS flash via Nios HAL API

Hi, I must be confused by the difference between the EPCS and parallel CFI type flash. I wrote programming software for the CFI but the EPCS API doesn't make sense to me. How do I query the system...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Hi,

there is a struct automaically initialized on initialization of your device, just before alt_main is called i think.

You'll find the init in your BSP/alt_sys_init.c in function alt_sys_init() there the MAKRO 

 
ALTERA_AVALON_EPCS_FLASH_CONTROLLER_INIT ( EPCS_FLASH_CONTROLLER_0, epcs_flash_controller_0);

should be caled, and therefore the struct epcs_flash_controller_0 is initialized.

So for accesing the EPCS i use this structure, which works well for me.