Pin Assignment on NIOSII Embedded Evaluation Kit with CyclonIII(EP3C25F324)

Hi Gerhard,

--- Quote Start ---

I assigned in .qsf-File :

set_location_assignment PIN_E2 -to top_flash_cs_n

After Fitting I get this Error:

Error (176310): Can't place multiple pins assigned to pin location Pin_E2 (IOPAD_X0_Y25_N0)

Info (176311): Pin top_flash_cs_n is assigned to pin location Pin_E2 (IOPAD_X0_Y25_N0)

Info (176311): Pin ~ALTERA_FLASH_nCE_nCSO~ is assigned to pin location Pin_E2 (IOPAD_X0_Y25_N0)

--- Quote End ---

Altera FPGAs have some dual-purpose pins. In this case, the pin the evaluation kit uses has defaulted to its 'other' purpose. To enable the pin for use as user I/O (after the FPGA has configured), you need to select:

Assignments -> Device, Device and Pin Options, Dual Purpose Pins

And then look at the FLASH_nCE/nCSO setting.

In the project I just opened for another board, it defaults to "As Input Tri-Stated". Click on that setting and change it to "Use as regular I/O".

Now your assignment will work.

Cheers,

Dave