If I could ask a basic query , how do you get the string “`multiplier_0_source_E`” in the edgeX of port definition for a

straight_route()

? For eg. I moved my pmos and nmos in the current mirror in x as well as y direction so that are not in the same straight row. I have defined the

straight_route()

to connect the reference and mirror ports from these multiplier names, but the route function doesn’t route the connection all the way through for the ports as expected. I could use the

L_route()

instead , but where do I get the string name of the instance ports for different instances ? I understand the

_

denotes a hierarchy of the instances, but how do you get the hierarchical names (multiplier, source etc.) from the instances built when asking the function ?

def currentMirror(pdk: MappedPDK):
  currMirrComp = Component()
  pfet_ref = pmos(pdk, with_substrate_tap=False, with_dummy=(False, True))
  pfet_mir = pmos(pdk, with_substrate_tap=False, with_dummy=(True, False))
  cref_ref = currMirrComp << pfet_ref
  cmir_ref = currMirrComp << pfet_mir
  cref_ref.movex(evaluate_bbox(pfet_mir)[0] + pdk.util_max_metal_seperation())
  cref_ref.movey(evaluate_bbox(pfet_mir)[1])
  currMirrComp << straight_route(pdk, cref_ref.ports["multiplier_0_source_E"], cmir_ref.ports["multiplier_0_source_E"])
  currMirrComp << straight_route(pdk, cref_ref.ports["multiplier_0_gate_E"], cmir_ref.ports["multiplier_0_gate_E"])
  currMirrComp << c_route(pdk, cref_ref.ports["multiplier_0_drain_E"], cref_ref.ports["multiplier_0_gate_E"])
  return currMirrComp

currentMirror(sky130).write_gds("cmirror_example.gds")