Error 171172 Detected conflicting assignments

[DTruj3]

Error (171173): Node led[1] from partition Top cannot preserve previous placement at PIN A23 and honor the location assignment to PIN AK29.

I'm using the Cyclone V GT Dev Kit.

In the Pin Planner I changed the location of a node from PIN_A23 to PIN_AK29. Recompiled the design and now I have the "Conflicting Assignments Error."

Why is the Fitter trying to preserve the placement at PIN_A23 when I changed the node location?

What do I need to do to clear this error?

[DTruj3]

** UPDATE** DO NOT DO THIS!!!!!!!!!!

In the Pin Planner I created a top level design file by overwriting the previous one. Doing this cleared the "Conflicting Assignments Error" but when I recompiled my design I got some new warnings. Now the majority of my timing constraints are being ignored. So I'm sure there is a better way of getting rid of the "Conflicting Assignments Error."

[DTruj3]

**UPDATE**'

Due to the fact I have no idea what I'm doing, DO NOT CREATE A NEW TOP LEVEL DESIGN!!! It appears I have lost all my code.

[DTruj3]

**UPDATE**

Apparently the top level design file has to be updated and Quartus does not update on recompile. I had to remove pin assignments by clicking on "Assignments" then "Remove Assignments" check "Pin, Location & Routing Assignments" then click "OK." Now in the Pin Planner reassign the node locations to the appropriate pins and recompile. The Error should go away.

[Vicky1 · Accepted solution]

Hi,

After changing the pin/node location, perform Project-> Clean Project & then Start Compilation.

let me know how it works for you.

Regards,

Vicky

[DTruj3]

Vicky,

Thanks for responding!!!

I'm have trouble replicating the error. But I'm sure it'll happen again, when it does I'll try cleaning the project and let you know if it works.

[DTruj3]

Vicky,

Yes, Cleaning the project and recompiling clears the error. Thank you!!!