Monday, June 13, 2011

PCB rules and how to access them.

Get access to the PCB rules. Get the width rules and list the details.

Sub GetWidthRule

Dim Board
Dim tmpStr

Set Board = PCBServer.GetCurrentPCBBoard
If Board is Nothing Then Exit Sub

Iterator = Board.BoardIterator_Create
Iterator.AddFilter_ObjectSet(MkSet(eRuleObject))
Iterator.AddFilter_LayerSet(AllLayers)
Iterator.AddFilter_Method(eProcessAll)
Set Rule = Iterator.FirstPCBObject

While Not (Rule Is Nothing)
 If  Rule.Rulekind =  eRule_MaxMinWidth Then
  tmpStr = "Name: " & Rule.Name & vbcrlf
  tmpStr = tmpStr & "Preferred: " & CoordtoMils(Rule.FavoredWidth(eTopLayer))
  tmpStr = tmpStr & "mils" & vbcrlf
  tmpStr = tmpStr & "Minimum: " & CoordtoMils(Rule.MinWidth(eTopLayer))
  tmpStr = tmpStr & "mils" & vbcrlf
  tmpStr = tmpStr & "Maximum: " & CoordtoMils(Rule.MaxWidth(eTopLayer))
  tmpStr = tmpStr & "mils" & vbcrlf
  tmpStr = tmpStr & "Scope1: " & Rule.Scope1Expression & vbcrlf
  tmpStr = tmpStr & "Scope2: " & Rule.Scope2Expression
  ShowMessage( tmpStr )
 End If
 Set Rule = Iterator.NextPCBObject
Wend

Board.BoardIterator_Destroy(Iterator)

End Sub



www.tdpcb.com


A list of available rules:

eRule_Clearance,
eRule_ParallelSegment,
eRule_MaxMinWidth,
eRule_MaxMinLength,
eRule_MatchedLengths,
eRule_DaisyChainStubLength,
eRule_PowerPlaneConnectStyle,
eRule_RoutingTopology,
eRule_RoutingPriority,
eRule_RoutingLayers,
eRule_RoutingCornerStyle,
eRule_RoutingViaStyle,
eRule_PowerPlaneClearance,
eRule_SolderMaskExpansion,
eRule_PasteMaskExpansion,
eRule_ShortCircuit,
eRule_BrokenNets,
eRule_ViasUnderSMD,
eRule_MaximumViaCount,
eRule_MinimumAnnularRing,
eRule_PolygonConnectStyle,
eRule_AcuteAngle,
eRule_ConfinementConstraint,
eRule_SMDToCorner,
eRule_ComponentClearance,
eRule_ComponentRotations,
eRule_PermittedLayers,
eRule_NetsToIgnore,
eRule_SignalStimulus,
eRule_Overshoot_FallingEdge,
eRule_Overshoot_RisingEdge,
eRule_Undershoot_FallingEdge,
eRule_Undershoot_RisingEdge,
eRule_MaxMinImpedance,
eRule_SignalTopValue,
eRule_SignalBaseValue,
eRule_FlightTime_RisingEdge,
eRule_FlightTime_FallingEdge,
eRule_LayerStack,
eRule_MaxSlope_RisingEdge,
eRule_MaxSlope_FallingEdge,
eRule_SupplyNets,
eRule_MaxMinHoleSize,
eRule_TestPointStyle,
eRule_TestPointUsage