export_d356.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2011-2013 Lorenzo Marcantonio <[email protected]>
 * Copyright (C) 2004-2022 KiCad Developers, see change_log.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#include <confirm.h>
#include <gestfich.h>
#include <kiface_base.h>
#include <pcb_edit_frame.h>
#include <trigo.h>
#include <build_version.h>
#include <macros.h>
#include <wildcards_and_files_ext.h>
#include <locale_io.h>
#include <pcbnew.h>
#include <board.h>
#include <board_design_settings.h>
#include <footprint.h>
#include <pad.h>
#include <pcb_track.h>
#include <vector>
#include <cctype>
#include <math/util.h> // for KiROUND
#include <export_d356.h>
#include <wx/filedlg.h>
 
 
 
// Compute the access code for a pad. Returns -1 if there is no copper
static int compute_pad_access_code( BOARD *aPcb, LSET aLayerMask )
{
 // Non-copper is not interesting here
 aLayerMask &= LSET::AllCuMask();
 if( !aLayerMask.any() )
 return -1;
 
 // Traditional TH pad
 if( aLayerMask[F_Cu] && aLayerMask[B_Cu] )
 return 0;
 
 // Front SMD pad
 if( aLayerMask[F_Cu] )
 return 1;
 
 // Back SMD pad
 if( aLayerMask[B_Cu] )
 return aPcb->GetCopperLayerCount();
 
 // OK, we have an inner-layer only pad (and I have no idea about
 // what could be used for); anyway, find the first copper layer
 // it's on
 for( int layer = In1_Cu; layer < B_Cu; ++layer )
 {
 if( aLayerMask[layer] )
 return layer + 1;
 }
 
 // This shouldn't happen
 return -1;
}
 
/* Convert and clamp a size from IU to decimils */
static int iu_to_d356(int iu, int clamp)
{
 int val = KiROUND( iu / ( pcbIUScale.IU_PER_MILS / 10 ) );
 if( val > clamp ) return clamp;
 if( val < -clamp ) return -clamp;
 return val;
}
 
/* Extract the D356 record from the footprints (pads) */
static void build_pad_testpoints( BOARD *aPcb, std::vector <D356_RECORD>& aRecords )
{
 VECTOR2I origin = aPcb->GetDesignSettings().GetAuxOrigin();
 
 for( FOOTPRINT* footprint : aPcb->Footprints() )
 {
 for( PAD* pad : footprint->Pads() )
 {
 D356_RECORD rk;
 rk.access = compute_pad_access_code( aPcb, pad->GetLayerSet() );
 
 // It could be a mask only pad, we only handle pads with copper here
 if( rk.access != -1 )
 {
 rk.netname = pad->GetNetname();
 rk.pin = pad->GetNumber();
 rk.refdes = footprint->GetReference();
 rk.midpoint = false; // XXX MAYBE need to be computed (how?)
 const VECTOR2I& drill = pad->GetDrillSize();
 rk.drill = std::min( drill.x, drill.y );
 rk.hole = (rk.drill != 0);
 rk.smd = pad->GetAttribute() == PAD_ATTRIB::SMD
 || pad->GetAttribute() == PAD_ATTRIB::CONN;
 rk.mechanical = ( pad->GetAttribute() == PAD_ATTRIB::NPTH );
 rk.x_location = pad->GetPosition().x - origin.x;
 rk.y_location = origin.y - pad->GetPosition().y;
 rk.x_size = pad->GetSize().x;
 
 // Rule: round pads have y = 0
 if( pad->GetShape() == PAD_SHAPE::CIRCLE )
 rk.y_size = 0;
 else
 rk.y_size = pad->GetSize().y;
 
 rk.rotation = - pad->GetOrientation().AsDegrees();
 
 if( rk.rotation < 0 )
 rk.rotation += 360;
 
 // the value indicates which sides are *not* accessible
 rk.soldermask = 3;
 
 if( pad->GetLayerSet()[F_Mask] )
 rk.soldermask &= ~1;
 
 if( pad->GetLayerSet()[B_Mask] )
 rk.soldermask &= ~2;
 
 aRecords.push_back( rk );
 }
 }
 }
}
 
/* Compute the access code for a via. In D-356 layers are numbered from 1 up,
 where '1' is the 'primary side' (usually the component side);
 '0' means 'both sides', and other layers follows in an unspecified order */
static int via_access_code( BOARD *aPcb, int top_layer, int bottom_layer )
{
 // Easy case for through vias: top_layer is component, bottom_layer is
 // solder, access code is 0
 if( (top_layer == F_Cu) && (bottom_layer == B_Cu) )
 return 0;
 
 // Blind via, reachable from front
 if( top_layer == F_Cu )
 return 1;
 
 // Blind via, reachable from bottom
 if( bottom_layer == B_Cu )
 return aPcb->GetCopperLayerCount();
 
 // It's a buried via, accessible from some inner layer
 // (maybe could be used for testing before laminating? no idea)
 return bottom_layer + 1; // XXX is this correct?
}
 
/* Extract the D356 record from the vias */
static void build_via_testpoints( BOARD *aPcb, std::vector <D356_RECORD>& aRecords )
{
 VECTOR2I origin = aPcb->GetDesignSettings().GetAuxOrigin();
 
 // Enumerate all the track segments and keep the vias
 for( auto track : aPcb->Tracks() )
 {
 if( track->Type() == PCB_VIA_T )
 {
 PCB_VIA *via = static_cast<PCB_VIA*>( track );
 NETINFO_ITEM *net = track->GetNet();
 
 D356_RECORD rk;
 rk.smd = false;
 rk.hole = true;
 if( net )
 rk.netname = net->GetNetname();
 else
 rk.netname = wxEmptyString;
 rk.refdes = wxT("VIA");
 rk.pin = wxT("");
 rk.midpoint = true; // Vias are always midpoints
 rk.drill = via->GetDrillValue();
 rk.mechanical = false;
 
 PCB_LAYER_ID top_layer, bottom_layer;
 
 via->LayerPair( &top_layer, &bottom_layer );
 
 rk.access = via_access_code( aPcb, top_layer, bottom_layer );
 rk.x_location = via->GetPosition().x - origin.x;
 rk.y_location = origin.y - via->GetPosition().y;
 rk.x_size = via->GetWidth();
 rk.y_size = 0; // Round so height = 0
 rk.rotation = 0;
 rk.soldermask = 3; // XXX always tented?
 
 aRecords.push_back( rk );
 }
 }
}
 
/* Add a new netname to the d356 canonicalized list */
static const wxString intern_new_d356_netname( const wxString &aNetname,
 std::map<wxString, wxString> &aMap, std::set<wxString> &aSet )
{
 wxString canon;
 
 for( size_t ii = 0; ii < aNetname.Len(); ++ii )
 {
 // Rule: we can only use the standard ASCII, control excluded
 wxUniChar ch = aNetname[ii];
 
 if( ch > 126 || !std::isgraph( static_cast<unsigned char>( ch ) ) )
 ch = '?';
 
 canon += ch;
 }
 
 // Rule: only uppercase (unofficial, but known to give problems
 // otherwise)
 canon.MakeUpper();
 
 // Rule: maximum length is 14 characters, otherwise we keep the tail
 if( canon.size() > 14 )
 {
 canon = canon.Right( 14 );
 }
 
 // Check if it's still unique
 if( aSet.count( canon ) )
 {
 // Nope, need to uniquify it, trim it more and add a number
 wxString base( canon );
 if( base.size() > 10 )
 {
 base = base.Right( 10 );
 }
 
 int ctr = 0;
 do
 {
 ++ctr;
 canon = base;
 canon << '#' << ctr;
 } while ( aSet.count( canon ) );
 }
 
 // Register it
 aMap[aNetname] = canon;
 aSet.insert( canon );
 return canon;
}
 
/* Write all the accumuled data to the file in D356 format */
void IPC356D_WRITER::write_D356_records( std::vector <D356_RECORD> &aRecords, FILE* aFile )
{
 // Sanified and shorted network names and set of short names
 std::map<wxString, wxString> d356_net_map;
 std::set<wxString> d356_net_set;
 
 for( unsigned i = 0; i < aRecords.size(); i++ )
 {
 D356_RECORD &rk = aRecords[i];
 
 // Try to sanify the network name (there are limits on this), if
 // not already done. Also 'empty' net are marked as N/C, as
 // specified.
 wxString d356_net( wxT( "N/C" ) );
 
 if( !rk.netname.empty() )
 {
 d356_net = d356_net_map[rk.netname];
 
 if( d356_net.empty() )
 d356_net = intern_new_d356_netname( rk.netname, d356_net_map, d356_net_set );
 }
 
 // Choose the best record type
 int rktype;
 
 if( rk.smd )
 rktype = 327;
 else
 {
 if( rk.mechanical )
 rktype = 367;
 else
 rktype = 317;
 }
 
 // Operation code, signal and component
 fprintf( aFile, "%03d%-14.14s %-6.6s%c%-4.4s%c",
 rktype, TO_UTF8(d356_net),
 TO_UTF8(rk.refdes),
 rk.pin.empty()?' ':'-',
 TO_UTF8(rk.pin),
 rk.midpoint?'M':' ' );
 
 // Hole definition
 if( rk.hole )
 {
 fprintf( aFile, "D%04d%c",
 iu_to_d356( rk.drill, 9999 ),
 rk.mechanical ? 'U':'P' );
 }
 else
 fprintf( aFile, " " );
 
 // Test point access
 fprintf( aFile, "A%02dX%+07dY%+07dX%04dY%04dR%03d",
 rk.access,
 iu_to_d356( rk.x_location, 999999 ),
 iu_to_d356( rk.y_location, 999999 ),
 iu_to_d356( rk.x_size, 9999 ),
 iu_to_d356( rk.y_size, 9999 ),
 rk.rotation );
 
 // Soldermask
 fprintf( aFile, "S%d\n", rk.soldermask );
 }
}
 
 
void IPC356D_WRITER::Write( const wxString& aFilename )
{
 FILE* file = nullptr;
 LOCALE_IO toggle; // Switch the locale to standard C
 
 if( ( file = wxFopen( aFilename, wxT( "wt" ) ) ) == nullptr )
 {
 wxString details;
 details.Printf( wxT( "The file %s could not be opened for writing." ), aFilename );
 DisplayErrorMessage( m_parent, wxT( "Could not write IPC-356D file!" ), details );
 return;
 }
 
 // This will contain everything needed for the 356 file
 std::vector<D356_RECORD> d356_records;
 
 build_via_testpoints( m_pcb, d356_records );
 
 build_pad_testpoints( m_pcb, d356_records );
 
 // Code 00 AFAIK is ASCII, CUST 0 is decimils/degrees
 // CUST 1 would be metric but gerbtool simply ignores it!
 fprintf( file, "P CODE 00\n" );
 fprintf( file, "P UNITS CUST 0\n" );
 fprintf( file, "P arrayDim N\n" );
 write_D356_records( d356_records, file );
 fprintf( file, "999\n" );
 
 fclose( file );
}
 
 
void PCB_EDIT_FRAME::GenD356File( wxCommandEvent& aEvent )
{
 wxFileName fn = GetBoard()->GetFileName();
 wxString ext, wildcard;
 
 ext = IpcD356FileExtension;
 wildcard = IpcD356FileWildcard();
 fn.SetExt( ext );
 
 wxString pro_dir = wxPathOnly( Prj().GetProjectFullName() );
 
 wxFileDialog dlg( this, _( "Export D-356 Test File" ), pro_dir,
 fn.GetFullName(), wildcard,
 wxFD_SAVE | wxFD_OVERWRITE_PROMPT );
 
 if( dlg.ShowModal() == wxID_CANCEL )
 return;
 
 IPC356D_WRITER writer( GetBoard(), this );
 
 writer.Write( dlg.GetPath() );
}