RTL Compiler : create_clock command

[shyam4908]

What is the problem with this. These are given in sdc file

set PERIOD_HCLK 20
set HCLK_RISE 0
set HCLK_FALL [expr $PERIOD_HCLK*0.5]

create_clock -period $PERIOD_HCLK -waveform {$HCLK_RISE $HCLK_FALL} "hclk"
set_dont_touch_network "hclk"
set_drive 0 "hclk"

--- I am geting the in Compiler as

Error : A command argument is of the wrong type. [TUI-66] [parse_options]
: A floating point number was expected, but '$HCLK_RISE' was seen instead.
: Check the command usage and correct the input to the command.

Please help me out

Thanks

 

[dftrtl]

create_clock -period $PERIOD_HCLK -waveform {0 $HCLK_RISE $HCLK_FALL} "hclk"

 

[englishdogg]

i tried this and strange RTLC does report an Error.. looks like a bug to me...
I initially thought that it was becuase of {} braces but no ..

If not it looks like the waveform option only accpets a number if you directly add {0 10} it works just fine

- - - Updated - - -

@shyam4908

Bang!!! I got it to work... try the below
create_clock -period $PERIOD_HCLK -waveform [list [expr $HCLK_RISE] [expr $HCLK_FALL]] "hclk"

Hope it helps...