haskal
/
kicad
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Diff pair gap only overrides netclass clearance when it's smaller. 

Fixes https://gitlab.com/kicad/code/kicad/issues/8676
This commit is contained in:
Jeff Young 2021-06-24 16:54:59 +01:00
parent 744dadd412
commit 232ffe97be
1 changed files with 17 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
pcbnew/drc/drc_engine.cpp
View File

@ -295,22 +295,25 @@ void DRC_ENGINE::loadImplicitRules()
constraint.Value().SetOpt( nc->GetDiffPairGap() );
netclassRule->AddConstraint( constraint );
// The diffpair gap overrides the netclass min clearance, but not the board
// min clearance.
netclassRule = new DRC_RULE;
netclassRule->m_Name = wxString::Format( _( "netclass '%s' (diff pair)" ),
ncName );
netclassRule->m_Implicit = true;
// A narrower diffpair gap overrides the netclass min clearance (but is still
// trimmed to the board min clearance, which is absolute).
if( nc->GetDiffPairGap() < nc->GetClearance() )
{
netclassRule = new DRC_RULE;
netclassRule->m_Name = wxString::Format( _( "netclass '%s' (diff pair)" ),
ncName );
netclassRule->m_Implicit = true;
expr = wxString::Format( "A.NetClass == '%s' && AB.isCoupledDiffPair()",
ncName );
netclassRule->m_Condition = new DRC_RULE_CONDITION( expr );
netclassItemSpecificRules.push_back( netclassRule );
expr = wxString::Format( "A.NetClass == '%s' && AB.isCoupledDiffPair()",
ncName );
netclassRule->m_Condition = new DRC_RULE_CONDITION( expr );
netclassItemSpecificRules.push_back( netclassRule );
DRC_CONSTRAINT min_clearanceConstraint( CLEARANCE_CONSTRAINT );
min_clearanceConstraint.Value().SetMin( std::max( bds.m_MinClearance,
nc->GetDiffPairGap() ) );
netclassRule->AddConstraint( min_clearanceConstraint );
DRC_CONSTRAINT min_clearanceConstraint( CLEARANCE_CONSTRAINT );
min_clearanceConstraint.Value().SetMin( std::max( bds.m_MinClearance,
nc->GetDiffPairGap() ) );
netclassRule->AddConstraint( min_clearanceConstraint );
}
}
if( nc->GetViaDiameter() || nc->GetViaDrill() )