Can't get rid of "ID:169085 No exact pin location assignment(s) for 72 pins of 135 total pins.

[Alberto_F]

Hello all,

As the title suggests. I can't get rid of the message:

"ID:169085 No exact pin location assignment(s) for 72 pins of 135 total pins. For the list of pins please refer to the I/O Assignment Warnings table in the fitter report."

A little background. I'm working on a Cyclone V HPS. I set the SDRAM parameters with the tcl scripts "hps_sdram_p0_pin_assignments" and "hps_sdram_p0_parameters". I'm setting my FPGA IO pins manually, and the HPS pins are set automatically.

The project compiles successfully, and I am able to boot a Linux system from an SD card and peripherals work ok.

When I look at the "Pin Planner" after compiling, my custom FPGA pins were assigned manually, and a new "Fitter" column has the location of the HPS pins.

I cannot change the values for "Location" on the Pin Planner, I get an error message.

How can I get rid of the "ID: 169085 No exact pin location assignment(s)..." message? What do I need to do to to correct the pin assigment? What am I missing? I looked at the help entry but I could not get more information, nor other examples.

Cheers,

Alberto

[sstrell]

It's just a warning.  It can be safely ignored.

[EBERLAZARE_I_Intel]

Hi,

Do you have any further questions?

[Alberto_F]

Hi,

No, not really questions. It is a confusing warning though... it'd be good if there was a way to get rid of it. But everything else seems to work, so I guess it's all good.

Cheers,

Alberto.

[sstrell · Accepted solution]

The warning means that some location assignments have not been explicitly added to the .qsf file.  However, hardened pins (like from the HPS) don't need explicit location assignments.  The warning is just letting you know of this fact.