Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Importing .csv files for DE1 pin assignments

I'm using the DE1_pin_assignments file for a design, and I used the board port names (SW[0], etc) in the design, but when I try to import the .cvs assignment file (Assignments - Import Assignments) I get this warning:

Warning: Can't import assignments from Comma-Separated Value File Y:/118/Labs_F12/Lab4_Quartus_v2/DE1_pin_assignments.csv -- file does not contain at least 'Assignment Name' and 'Value' columns

Warning: ,,,,

and the pins are not assigned properly in the Assignments - Pin window.

The .cvs file looks fine to me, and DOES have the "Assignment Name" and "Value" columns (along with "From", "To", and "Enabled" columns).

Something I'm missing?

6 Replies

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

    Thank you, I've been successful in creating and downloading a few designs, but I'm particularly interested in getting the pin assignment import working. I didn't see anything in the zip file that was helpful (not a sample .csv file for example)

    Appreciate your quick reply though.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    --- Quote Start ---

    I didn't see anything in the zip file that was helpful (not a sample .csv file for example)

    --- Quote End ---

    Please read the readme.txt file, and then look at scripts/synth.tcl. That file creates a project and synthesizes the example design. The scripts/synth.tcl script calls procedures in scripts/constraints.tcl. That file contains all of the pin constraints.

    At a minimum, if you use the same top-level pin names in your design, you can use the Quartus Tcl console and 

    
tcl> source scripts/constraints.tcl
tcl> set_default_constraints

    Ask questions if you need clarification.

    Cheers,

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

    By the way, if you do not like the way I have used scripts, then you can create your own set of pin constraints from my basic design. Run the synthesis script to create the example design, and then use Quartus to export a Tcl script or .csv script for the pin assignments, eg., use Project->Generate Tcl File for Project.

    Cheers,

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

    Thank you for the advice about exporting a .csv file from the project. Once I realized this was accomplished by using the File Export command with the Pin Planner open, rather than "Assignments - Export Assignments, I got the .csv file. It is formatted very differently than the one that came with the boards, so I should be able to figure it out from here. Thanks again.

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

    --- Quote Start ---

    Thank you for the advice about exporting a .csv file from the project. Once I realized this was accomplished by using the File Export command with the Pin Planner open, rather than "Assignments - Export Assignments, I got the .csv file. It is formatted very differently than the one that came with the boards, so I should be able to figure it out from here. Thanks again.

    --- Quote End ---

    I'm glad you figured it out.

    Once you have your project working, come back and look at the scripts, you will find they are more convenient than using the GUI and importing .csv files when rebuilding projects in newer versions of Quartus.

    Cheers,

    Dave