A pad’s Pin_Type property picks up the pin function from the schematic. It will be one of:
- input
- output
- bidirectional
- tri-state
- passive
- free
- unspecified
- power input
- power output
- open collector
- open emitter
- unconnected
If the pin is marked with a “no connect” in the schematic then it will have “-unconnected” added as a suffix. For instance “passive-unconnected”.
For brevity the “-unconnected” suffix will not appear on an “unconnected” pin.
So let’s say you want to give a bit more clearance to a high-voltage net, but want to allow it between unconnected pins.
This will target a netclass:
A.NetClass == 'HV'
This will target unconnected pins:
B.Pin_Type == '*unconnected' || B.PinType == 'free'
.
However, we want our condition to exclude unconnected pins rather than target them.
!( B.Pin_Type == '*unconnected' || B.PinType == 'free'`)
Note that:
B.Pin_Type != '*unconnected' && B.PinType != 'free'
will not do what we want it to. The test Pin_Type != 'free' means a “pin which is not of type free” rather than “an object which is not a pin of type free”. So it’s going to fail to match on tracks, zones, etc., which is not what we want.
.
The resulting condition is:
(condition "A.NetClass == 'HV' && !( B.Pin_Type == '*unconnected' || B.PinType == 'free'`)"