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Hi, All! I am using Cadence IC514 version.
I found a code which increases the parameters by a given factor in
schematic.(i.e width and length etc...)
My problem is as follows...
I have two instances pch_25_mac with
1) "w"="5u" and "l"="500n" and 2)
"w"="5u" and "l"="280n"(this is the default value for this parameter)
dbFindProp(inst prop) is returning it's id on first instance but it is
not when the parameter value is default value.
How to resolve this problem...
Here is the code that I have got....
procedure(CCS_ModifyWL(lib cell factor "ttn")
let((cv new propId)
cv = dbOpenCellViewByType( lib cell "schematic" "" "a")
;foreach(prop list("w" "l")
foreach(prop list("w" "wf" "l" "wr" "lr" "sumW" "sumL")
if(member(prop cdf1~>parameters~>name) then
propId = cdf1~>prop
new = sprintf(nil "%g" cdfParseFloatString(propId~>
This is correct behaviour. dbFindProp only deals with db property objects. When CDF is being used, the default values are not (normally) stored on the instance, and so there is no property object to find.
One way to handle this is to use cdfGetInstCDF (as you have) and then replace the line:
propId = cdf1~>prop
propId = get(cdf1 prop)
I didn't test the code, but I think it should all work with that change
In reply to Andrew Beckett: