Simulator interfaces

Cadence

pycircuit.post.cds

class pycircuit.post.cds.CadenceSession(cmd=None, timeout=30, verbose=False)

Bases: object

Class to handle a non-graphical cadence session

>>> s = CadenceSession()
>>> s.send("(list 1 2 3)")
[1, 2, 3]
>>> s.callfunc('list', 1,2,3)
[1, 2, 3]
>>> s.list(1,2,3)
[1, 2, 3]

callfunc(name, *args, **optargs)

Call skill function in session

evalexpr(expr, *args)

Eval skill-expression with optional SkillObjects arguments expanded

SkillObjects can be used in the expression by using %s and supplying the SkillObjects to be expanded in the args argument

send(expr, parse=True, parseall=False)

class pycircuit.post.cds.CadenceSessionFile(file=<_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>, timeout=30, verbose=False)

Bases: CadenceSession

Class to handle that writes to a skill file instead of real cadence session.

>>> s = CadenceSessionFile(file=sys.stdout)
>>> s.send("(list 1 2 3)")
(list 1 2 3)
>>> s.callfunc('list', 1,2,3)
(list 1 2 3)
>>> s.list(1,2,3)
(list 1 2 3)
>>> s.testfunc(1,2,3,apa=3,b="test",c=False)
(testfunc 1 2 3 ?c nil ?apa 3 ?b "test")

send(expr)

class pycircuit.post.cds.PSFResultSet(resultdir=None)

Bases: ResultDict

PSFResultSet class handles a PSF result directory

A PSFResultSet may contain one or more runs (PSFRun objects) which in turn contain one or more results (PSFResult).

isfamily()

Return true if resultset is a parametric sweep

>>> resultset=PSFResultSet('./test/resultdirs/simple')
>>> resultset.isfamily()
False
>>> resultset=PSFResultSet('./test/resultdirs/parsweep/psf')
>>> resultset.isfamily()
True

keys()

Get name of results

>>> resultset=PSFResultSet('./test/resultdirs/simple')
>>> resultset.keys()
('srcSweep', 'opBegin')

>>> resultset=PSFResultSet('./test/resultdirs/parsweep/psf')
>>> resultset.keys()
('srcSweep', 'opBegin')

pycircuit.post.cds.skill

class pycircuit.post.cds.skill.Symbol(name)

Bases: object

pycircuit.post.cds.skill.parse(str)

Parse skill expression. @return Python representation of str

>>> parse("1")==1
True
>>> parse("1.0")==1.0
True
>>> parse('"apa"')=="apa"
True
>>> parse('apa')!="apa"
True
>>> parse("(1 2 3)")==[1,2,3]
True
>>> parse("nil").name == 'nil'
True
>>> parse("nil")==Symbol('nil')
True
>>> parse("(1 ?a)")==[1,Symbol('?a')]
True

pycircuit.post.cds.skill.toSkill(x)

Convert python type to skill code

>>> toSkill([1,2,3,"apa"])
'(list 1 2 3 "apa")'
>>> toSkill([1,False,"apa",True])
'(list 1 nil "apa" t)'

Mentor Graphics