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https://github.com/The-OpenROAD-Project/OpenSTA.git
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7fdc304e12
* Add read_vcd -begin_time/-end_time activity windowing. Limit VCD transition and duty counting to an optional time window so activity annotation can ignore regions outside the interval of interest. Co-authored-by: Cursor <[email protected]> * Format VcdCount::setFilter parameters one per line. Co-authored-by: Cursor <[email protected]> * Address VCD begin/end review: VcdTime, sentinel, rename. Use VcdTime and vcd_null_time instead of int64_t/-1, rename VcdCount filter bounds to begin/end_time, rename the regression to vcd_begin_end_time, and document read_vcd -begin_time/-end_time in ChangeLog.txt. Co-authored-by: Cursor <[email protected]> --------- Co-authored-by: Cursor <[email protected]> Co-authored-by: James Cherry <[email protected]>
71 lines
2.0 KiB
Tcl
71 lines
2.0 KiB
Tcl
# Report pin activities
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proc report_activities { } {
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set pins [get_pins -hierarchical *]
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set clk_freq [expr 1.0 / (10 * 1e-12)]
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puts "Pin Name Activity Duty Cycle"
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puts "--------------------------------------------------------"
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foreach pin $pins {
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set prop [get_property $pin activity]
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set transitions_per_sec [lindex $prop 0]
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set duty [lindex $prop 1]
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set activity [expr double($transitions_per_sec) / [expr $clk_freq * 2]]
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puts "[get_full_name $pin] $activity $duty"
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}
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puts ""
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}
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# Setup
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read_liberty asap7_invbuf.lib.gz
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read_verilog vcd_begin_end_time.v
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link_design top
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# Define clock period in ps
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create_clock -name vclk -period 10
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# Full VCD reading works (normal behavior)
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# VCD changes at time 50 and 100 (inverter)
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top
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report_activities
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# Read VCD from start to first transition point
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -end_time 50
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report_activities
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# Read VCD from first transition point to second transition point
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 50 -end_time 100
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report_activities
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# Read VCD from second transition point to end
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 100
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report_activities
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# Read VCD around the first transition point
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 40 -end_time 60
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report_activities
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 20 -end_time 60
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report_activities
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 40 -end_time 80
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report_activities
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# Read VCD around the second transition point (should mirror the first)
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 90 -end_time 110
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report_activities
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 70 -end_time 110
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report_activities
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sta::clear_power
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read_vcd vcd_begin_end_time.vcd -scope top -begin_time 90 -end_time 130
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report_activities
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