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Altera_Forum's avatar
Altera_Forum
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11 years ago

EPCS access fail

Hi there

I'm having trouble accessing the EPCS from withing NIOS. When running the following code:

void OpenEpcsFlash()

{

fd_f = alt_flash_open_dev(EPCS_FLASH_CONTROLLER_NAME);

alt_printf("EPCS pointer: %x\r\n",fd_f);

}

fd_f always returns a NULL pointer.

I've enabled small_device_drivers and the small_c_library, but I've included the ALT_USE_EPCS_FLASH# define. If I run the exact same code on the DE0_Nano_SOPC demo project, included in the Altera DE0 Nano board, the software works. Is it possibly a setup problem in my Qsys system?

I'm using Quartus 13.1.0.

Thanks in advance

Jean

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    I found the problem. The# define ALT_USE_EPCS_FLASH, is removed each time the BSP is regenerated. Thus it needs to be added after BSP generation.

    Hope this helps someone in the future

    Kind regards

    Jean
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    11 years ago

    There are others cases where some user installed the EDS and tool chain in different folder location where causing the inclusion path is not updated correctly. :)