Altera Quartus II Scripting Manuel d'utilisateur télécharger pdf (Page 619)

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Chapter 3: Tcl Packages & Commands 3–489

timing_assignment

get_clocks

Usage

get_clocks [-tag <data>]

Options

-tag <data>: Option to tag data to this assignment

Description

Returns a list of lists consisting of node name and clock setting name. The output has the following format:

{{<node name #1> <clock setting name #1>}

{<node name #2> <clock setting name #2>}

...

{<node name #N> <clock setting name #N>}}

If <node name> is empty, <clock setting name> was not assigned to any node. If <clock setting name> is

empty, <node name> was assigned to an undefined <clock setting name>.

You can create <clock setting name> using the "create_base_clock" or "create_relative_clock" commands.

You can create node names using the following command:

set_instance_assignment -name CLOCK_SETTINGS -to <clock setting name> <node name>

Example

# Search for all pairs of node names and clock setting names

# and print the information

set clock_lists [get_clocks]

foreach clock_asgn $clock_lists {

set node_name [lindex $clock_asgn 0]

set clock_setting_name [lindex $clock_asgn 1]

if { $node_name == "" } {

puts "No node uses the clock \"$clock_setting_name\""

} elseif {$clock_setting_name == ""} {

puts "The node \"$node_name\" uses an undefined clock setting";

} else {

puts "The node \"$node_name\" uses the clock \

\"$clock_setting_name\""

}

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Altera Quartus II Scripting Manuel d'utilisateur Page 619

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