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  3. AR# 45715: Project Navigator - How to pass a Tcl variable to an XST generic

AR# 45715

Project Navigator - How to pass a Tcl variable to an XST generic

Description

Using Tcl variables to apply values to HDL and XST generics can be very powerful to allow users to have greater control of their design without modifying constant values in their code. Is this possible with Tcl scripts?

Solution

While XST is not able to directly read a Tcl variable, it is possible to assign the value of a Tcl variable to an XST property.

To apply a Tcl variable value to an XST generic the syntax in the example below can be used:

Example:

set test_var 16

set_property generic generic_name_in_hdl=$test_var [current_fileset]

This will apply the value 16 to the generic in question, (i.e. generic_name_in_hdl).
AR# 45715
Date 12/15/2012
Status Active
Type General Article
Tools
  • ISE Design Suite - 13.1
  • ISE Design Suite - 13.2
  • ISE Design Suite - 13.3
  • ISE Design Suite - 13.4
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