kicad/eeschema/sim/ngspice.cpp

477 lines
12 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* 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 3
* 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:
* https://www.gnu.org/licenses/gpl-3.0.html
* or you may search the http://www.gnu.org website for the version 3 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "ngspice.h"
#include "spice_reporter.h"
#include <common.h> // LOCALE_IO
#include <wx/stdpaths.h>
#include <wx/dir.h>
#include <wx/dynlib.h>
#include <sstream>
#include <stdexcept>
using namespace std;
NGSPICE::NGSPICE()
{
init_dll();
}
NGSPICE::~NGSPICE()
{
delete m_dll;
}
void NGSPICE::Init()
{
Command( "reset" );
}
vector<COMPLEX> NGSPICE::GetPlot( const string& aName, int aMaxLen )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
vector<COMPLEX> data;
vector_info* vi = m_ngGet_Vec_Info( (char*) aName.c_str() );
if( vi )
{
int length = aMaxLen < 0 ? vi->v_length : std::min( aMaxLen, vi->v_length );
data.reserve( length );
if( vi->v_realdata )
{
for( int i = 0; i < length; i++ )
data.push_back( COMPLEX( vi->v_realdata[i], 0.0 ) );
}
else if( vi->v_compdata )
{
for( int i = 0; i < length; i++ )
data.push_back( COMPLEX( vi->v_compdata[i].cx_real, vi->v_compdata[i].cx_imag ) );
}
}
return data;
}
vector<double> NGSPICE::GetRealPlot( const string& aName, int aMaxLen )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
vector<double> data;
vector_info* vi = m_ngGet_Vec_Info( (char*) aName.c_str() );
if( vi )
{
int length = aMaxLen < 0 ? vi->v_length : std::min( aMaxLen, vi->v_length );
data.reserve( length );
if( vi->v_realdata )
{
for( int i = 0; i < length; i++ )
{
data.push_back( vi->v_realdata[i] );
}
}
else if( vi->v_compdata )
{
for( int i = 0; i < length; i++ )
{
assert( vi->v_compdata[i].cx_imag == 0.0 );
data.push_back( vi->v_compdata[i].cx_real );
}
}
}
return data;
}
vector<double> NGSPICE::GetImagPlot( const string& aName, int aMaxLen )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
vector<double> data;
vector_info* vi = m_ngGet_Vec_Info( (char*) aName.c_str() );
if( vi )
{
int length = aMaxLen < 0 ? vi->v_length : std::min( aMaxLen, vi->v_length );
data.reserve( length );
if( vi->v_compdata )
{
for( int i = 0; i < length; i++ )
{
data.push_back( vi->v_compdata[i].cx_imag );
}
}
}
return data;
}
vector<double> NGSPICE::GetMagPlot( const string& aName, int aMaxLen )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
vector<double> data;
vector_info* vi = m_ngGet_Vec_Info( (char*) aName.c_str() );
if( vi )
{
int length = aMaxLen < 0 ? vi->v_length : std::min( aMaxLen, vi->v_length );
data.reserve( length );
if( vi->v_realdata )
{
for( int i = 0; i < length; i++ )
data.push_back( vi->v_realdata[i] );
}
else if( vi->v_compdata )
{
for( int i = 0; i < length; i++ )
data.push_back( hypot( vi->v_compdata[i].cx_real, vi->v_compdata[i].cx_imag ) );
}
}
return data;
}
vector<double> NGSPICE::GetPhasePlot( const string& aName, int aMaxLen )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
vector<double> data;
vector_info* vi = m_ngGet_Vec_Info( (char*) aName.c_str() );
if( vi )
{
int length = aMaxLen < 0 ? vi->v_length : std::min( aMaxLen, vi->v_length );
data.reserve( length );
if( vi->v_realdata )
{
for( int i = 0; i < length; i++ )
data.push_back( 0.0 ); // well, that's life
}
else if( vi->v_compdata )
{
for( int i = 0; i < length; i++ )
data.push_back( atan2( vi->v_compdata[i].cx_imag, vi->v_compdata[i].cx_real ) );
}
}
return data;
}
bool NGSPICE::LoadNetlist( const string& aNetlist )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
vector<char*> lines;
stringstream ss( aNetlist );
m_netlist = "";
while( !ss.eof() )
{
char line[1024];
ss.getline( line, sizeof( line ) );
lines.push_back( strdup( line ) );
m_netlist += std::string( line ) + std::string( "\n" );
}
lines.push_back( nullptr ); // sentinel, as requested in ngSpice_Circ description
m_ngSpice_Circ( lines.data() );
for( auto line : lines )
free( line );
return true;
}
bool NGSPICE::Run()
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
return Command( "bg_run" ); // bg_* commands execute in a separate thread
}
bool NGSPICE::Stop()
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
return Command( "bg_halt" ); // bg_* commands execute in a separate thread
}
bool NGSPICE::IsRunning()
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
return m_ngSpice_Running();
}
bool NGSPICE::Command( const string& aCmd )
{
LOCALE_IO c_locale; // ngspice works correctly only with C locale
validate();
m_ngSpice_Command( (char*) aCmd.c_str() );
return true;
}
string NGSPICE::GetXAxis( SIM_TYPE aType ) const
{
switch( aType )
{
case ST_AC:
case ST_NOISE:
return string( "frequency" );
break;
case ST_DC:
return string( "v-sweep" );
break;
case ST_TRANSIENT:
return string( "time" );
break;
default:
break;
}
return string( "" );
}
void NGSPICE::init_dll()
{
if( m_initialized )
return;
LOCALE_IO c_locale; // ngspice works correctly only with C locale
#ifdef __WINDOWS__
m_dll = new wxDynamicLibrary( "libngspice-0.dll" );
#else
m_dll = new wxDynamicLibrary( wxDynamicLibrary::CanonicalizeName( "ngspice" ) );
#endif
if( !m_dll || !m_dll->IsLoaded() )
throw std::runtime_error( "Missing ngspice shared library" );
m_error = false;
// Obtain function pointers
m_ngSpice_Init = (ngSpice_Init) m_dll->GetSymbol( "ngSpice_Init" );
m_ngSpice_Circ = (ngSpice_Circ) m_dll->GetSymbol( "ngSpice_Circ" );
m_ngSpice_Command = (ngSpice_Command) m_dll->GetSymbol( "ngSpice_Command" );
m_ngGet_Vec_Info = (ngGet_Vec_Info) m_dll->GetSymbol( "ngGet_Vec_Info" );
m_ngSpice_AllPlots = (ngSpice_AllPlots) m_dll->GetSymbol( "ngSpice_AllPlots" );
m_ngSpice_AllVecs = (ngSpice_AllVecs) m_dll->GetSymbol( "ngSpice_AllVecs" );
m_ngSpice_Running = (ngSpice_Running) m_dll->GetSymbol( "ngSpice_running" ); // it is not a typo
m_ngSpice_Init( &cbSendChar, &cbSendStat, &cbControlledExit, NULL, NULL, &cbBGThreadRunning, this );
// Load a custom spinit file, to fix the problem with loading .cm files
// Switch to the executable directory, so the relative paths are correct
const wxStandardPaths& paths = wxStandardPaths::Get();
wxString cwd( wxGetCwd() );
wxFileName exeDir( paths.GetExecutablePath() );
wxSetWorkingDirectory( exeDir.GetPath() );
// Find *.cm files
string cmPath = findCmPath();
// __CMPATH is used in custom spinit file to point to the codemodels directory
if( !cmPath.empty() )
Command( "set __CMPATH=\"" + cmPath + "\"" );
// Possible relative locations for spinit file
const vector<string> spiceinitPaths =
{
".",
"../share/kicad",
"../share",
"../../share/kicad",
"../../share"
};
bool foundSpiceinit = false;
for( const auto& path : spiceinitPaths )
{
if( loadSpinit( path + "/spiceinit" ) )
{
foundSpiceinit = true;
break;
}
}
// Last chance to load codemodel files, we have not found
// spiceinit file, but we know the path to *.cm files
if( !foundSpiceinit && !cmPath.empty() )
loadCodemodels( cmPath );
// Restore the working directory
wxSetWorkingDirectory( cwd );
// Workarounds to avoid hang ups on certain errors
// These commands have to be called, no matter what is in the spinit file
Command( "unset interactive" );
Command( "set noaskquit" );
Command( "set nomoremode" );
m_initialized = true;
}
bool NGSPICE::loadSpinit( const string& aFileName )
{
if( !wxFileName::FileExists( aFileName ) )
return false;
wxTextFile file;
if( !file.Open( aFileName ) )
return false;
for( auto cmd = file.GetFirstLine(); !file.Eof(); cmd = file.GetNextLine() )
Command( cmd.ToStdString() );
return true;
}
string NGSPICE::findCmPath() const
{
const vector<string> cmPaths =
{
#ifdef __APPLE__
"/Applications/ngspice/lib/ngspice",
#endif /* __APPLE__ */
"../lib/ngspice",
"../../lib/ngspice"
"lib/ngspice",
"ngspice"
};
for( const auto& path : cmPaths )
{
if( wxFileName::DirExists( path ) )
return path;
}
return string();
}
bool NGSPICE::loadCodemodels( const string& aPath )
{
wxArrayString cmFiles;
size_t count = wxDir::GetAllFiles( aPath, &cmFiles );
for( const auto& cm : cmFiles )
Command( "codemodel " + cm.ToStdString() );
return count != 0;
}
int NGSPICE::cbSendChar( char* what, int id, void* user )
{
NGSPICE* sim = reinterpret_cast<NGSPICE*>( user );
if( sim->m_reporter )
{
// strip stdout/stderr from the line
if( ( strncasecmp( what, "stdout ", 7 ) == 0 )
|| ( strncasecmp( what, "stderr ", 7 ) == 0 ) )
what += 7;
sim->m_reporter->Report( what );
}
return 0;
}
int NGSPICE::cbSendStat( char* what, int id, void* user )
{
/* NGSPICE* sim = reinterpret_cast<NGSPICE*>( user );
if( sim->m_consoleReporter )
sim->m_consoleReporter->Report( what );*/
return 0;
}
int NGSPICE::cbBGThreadRunning( bool is_running, int id, void* user )
{
NGSPICE* sim = reinterpret_cast<NGSPICE*>( user );
if( sim->m_reporter )
// I know the test below seems like an error, but well, it works somehow..
sim->m_reporter->OnSimStateChange( sim, is_running ? SIM_IDLE : SIM_RUNNING );
return 0;
}
int NGSPICE::cbControlledExit( int status, bool immediate, bool exit_upon_quit, int id, void* user )
{
// Something went wrong, reload the dll
NGSPICE* sim = reinterpret_cast<NGSPICE*>( user );
sim->m_error = true;
return 0;
}
void NGSPICE::validate()
{
if( m_error )
{
delete m_dll;
m_initialized = false;
init_dll();
}
}
const std::string NGSPICE::GetNetlist() const
{
return m_netlist;
}
bool NGSPICE::m_initialized = false;