Sim: Fix tuners

This commit is contained in:
Mikolaj Wielgus 2022-10-24 03:47:48 +02:00
parent 78b193af5f
commit 9b6cc6c505
12 changed files with 118 additions and 254 deletions

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@ -252,21 +252,30 @@ void NETLIST_EXPORTER_SPICE::ReplaceForbiddenChars( std::string& aNetName )
std::string NETLIST_EXPORTER_SPICE::GetItemName( const std::string& aRefName ) const std::string NETLIST_EXPORTER_SPICE::GetItemName( const std::string& aRefName ) const
{
const SPICE_ITEM* item = FindItem( aRefName );
if( !item )
return "";
return item->model->SpiceGenerator().ItemName( *item );
}
const SPICE_ITEM* NETLIST_EXPORTER_SPICE::FindItem( const std::string& aRefName ) const
{ {
const std::list<SPICE_ITEM>& spiceItems = GetItems(); const std::list<SPICE_ITEM>& spiceItems = GetItems();
auto it = std::find_if( spiceItems.begin(), spiceItems.end(), auto it = std::find_if( spiceItems.begin(), spiceItems.end(),
[aRefName]( const SPICE_ITEM& aItem ) [aRefName]( const SPICE_ITEM& item )
{ {
return aItem.refName == aRefName; return item.refName == aRefName;
} ); } );
if( it == spiceItems.end() ) if( it != spiceItems.end() )
return ""; return &*it;
SPICE_ITEM item; return nullptr;
item.refName = aRefName;
return it->model->SpiceGenerator().ItemName( item );
} }

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@ -99,23 +99,27 @@ public:
*/ */
std::set<std::string> GetNets() const { return m_nets; } std::set<std::string> GetNets() const { return m_nets; }
/** /**
* Return name of Spice device corresponding to a schematic symbol. * Return name of Spice device corresponding to a schematic symbol.
* *
* @param aRefName is the component reference. * @param aRefName is the component reference.
* @return Spice device name or empty string if there is no such symbol in the netlist. * @return Spice device name or empty string if there is no such symbol in the netlist.
* Normally the name is either plain reference if the first character of reference corresponds * Normally the name is either a plain reference if the first character of reference
* to the assigned device model type or it is the reference prefixed with a character defining * corresponds to the assigned device model type or a reference prefixed with a character
* the device model type. * defining the device model type.
*/ */
std::string GetItemName( const std::string& aRefName ) const; std::string GetItemName( const std::string& aRefName ) const;
/** /**
* Return the list of items representing schematic components in the Spice world. * Return the list of items representing schematic symbols in the Spice world.
*/ */
const std::list<SPICE_ITEM>& GetItems() const { return m_items; } const std::list<SPICE_ITEM>& GetItems() const { return m_items; }
/**
* Find and return the item corresponding to \a aRefName.
*/
const SPICE_ITEM* FindItem( const std::string& aRefName ) const;
const std::vector<std::string>& GetDirectives() { return m_directives; } const std::vector<std::string>& GetDirectives() { return m_directives; }
protected: protected:

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@ -25,6 +25,7 @@
#include <sim/sim_model_ideal.h> #include <sim/sim_model_ideal.h>
#include <pegtl.hpp> #include <pegtl.hpp>
#include <pegtl/contrib/parse_tree.hpp> #include <pegtl/contrib/parse_tree.hpp>
#include <fmt/core.h>
std::string SPICE_GENERATOR_IDEAL::ModelLine( const SPICE_ITEM& aItem ) const std::string SPICE_GENERATOR_IDEAL::ModelLine( const SPICE_ITEM& aItem ) const
@ -45,6 +46,15 @@ std::string SPICE_GENERATOR_IDEAL::ItemLine( const SPICE_ITEM& aItem ) const
} }
std::string SPICE_GENERATOR_IDEAL::TunerCommand( const SPICE_ITEM& aItem,
const SIM_VALUE_FLOAT& aValue ) const
{
return fmt::format( "alter @{}={}",
aItem.model->SpiceGenerator().ItemName( aItem ),
aValue.ToSpiceString() );
}
SIM_MODEL_IDEAL::SIM_MODEL_IDEAL( TYPE aType ) : SIM_MODEL_IDEAL::SIM_MODEL_IDEAL( TYPE aType ) :
SIM_MODEL( aType, std::make_unique<SPICE_GENERATOR_IDEAL>( *this ) ) SIM_MODEL( aType, std::make_unique<SPICE_GENERATOR_IDEAL>( *this ) )
{ {

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@ -36,6 +36,8 @@ public:
std::string ModelLine( const SPICE_ITEM& aItem ) const override; std::string ModelLine( const SPICE_ITEM& aItem ) const override;
std::string ItemLine( const SPICE_ITEM& aItem ) const override; std::string ItemLine( const SPICE_ITEM& aItem ) const override;
std::string TunerCommand( const SPICE_ITEM& aItem, const SIM_VALUE_FLOAT& aValue ) const override;
}; };

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@ -38,6 +38,15 @@ std::string SPICE_GENERATOR_R_POT::ModelLine( const SPICE_ITEM& aItem ) const
} }
std::string SPICE_GENERATOR_R_POT::TunerCommand( const SPICE_ITEM& aItem,
const SIM_VALUE_FLOAT& aValue ) const
{
return fmt::format( "altermod @{}[position]={}",
aItem.model->SpiceGenerator().ItemName( aItem ),
aValue.ToSpiceString() );
}
SIM_MODEL_R_POT::SIM_MODEL_R_POT() : SIM_MODEL_R_POT::SIM_MODEL_R_POT() :
SIM_MODEL( TYPE::R_POT, std::make_unique<SPICE_GENERATOR_R_POT>( *this ) ) SIM_MODEL( TYPE::R_POT, std::make_unique<SPICE_GENERATOR_R_POT>( *this ) )
{ {

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@ -35,6 +35,7 @@ public:
using SPICE_GENERATOR::SPICE_GENERATOR; using SPICE_GENERATOR::SPICE_GENERATOR;
std::string ModelLine( const SPICE_ITEM& aItem ) const override; std::string ModelLine( const SPICE_ITEM& aItem ) const override;
std::string TunerCommand( const SPICE_ITEM& aItem, const SIM_VALUE_FLOAT& aValue ) const override;
}; };

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@ -549,33 +549,24 @@ void SIM_PLOT_FRAME::AddTuner( SCH_SYMBOL* aSymbol )
if( !plotPanel ) if( !plotPanel )
return; return;
SIM_MODEL::TYPE type = SIM_MODEL::ReadTypeFromFields( aSymbol->GetFields(), wxString ref = aSymbol->GetField( REFERENCE_FIELD )->GetShownText();
static_cast<int>( aSymbol->GetLibPins().size() ) );
SIM_MODEL::DEVICE_TYPE_ deviceType = SIM_MODEL::TypeInfo( type ).deviceType;
switch( deviceType ) // Do not add multiple instances for the same component.
auto tunerIt = std::find_if( m_tuners.begin(), m_tuners.end(),
[ref]( const TUNER_SLIDER* tuner )
{ {
case SIM_MODEL::DEVICE_TYPE_::R: return tuner->GetComponentName() == ref;
case SIM_MODEL::DEVICE_TYPE_::C: } );
case SIM_MODEL::DEVICE_TYPE_::L:
case SIM_MODEL::DEVICE_TYPE_::XSPICE:
break;
default:
return;
}
const wxString componentName = aSymbol->GetField( REFERENCE_FIELD )->GetText();
// Do not add multiple instances for the same component
auto tunerIt = std::find_if( m_tuners.begin(), m_tuners.end(), [&]( const TUNER_SLIDER* t )
{
return t->GetComponentName() == componentName;
}
);
if( tunerIt != m_tuners.end() ) if( tunerIt != m_tuners.end() )
return; // We already have it return; // We already have it.
const SPICE_ITEM* item = GetExporter()->FindItem( std::string( ref.ToUTF8() ) );
const SIM_MODEL::PARAM* tunerParam = item->model->GetTunerParam();
// Do nothing if the symbol is not tunable.
if( !tunerParam )
return;
try try
{ {
@ -586,30 +577,31 @@ void SIM_PLOT_FRAME::AddTuner( SCH_SYMBOL* aSymbol )
} }
catch( const KI_PARAM_ERROR& e ) catch( const KI_PARAM_ERROR& e )
{ {
// Sorry, no bonus
DisplayErrorMessage( nullptr, e.What() ); DisplayErrorMessage( nullptr, e.What() );
} }
} }
void SIM_PLOT_FRAME::UpdateTunerValue( SCH_SYMBOL* aSymbol, int aId, const wxString& aValue ) void SIM_PLOT_FRAME::UpdateTunerValue( SCH_SYMBOL* aSymbol, const wxString& aValue )
{ {
for( auto& item : m_schematicFrame->GetScreen()->Items().OfType( SCH_SYMBOL_T ) ) for( auto& item : m_schematicFrame->GetScreen()->Items().OfType( SCH_SYMBOL_T ) )
{ {
if( item == aSymbol ) if( item == aSymbol )
{ {
SCH_FIELD* field = aSymbol->GetFieldById( aId ); SIM_LIB_MGR mgr( Prj() );
SIM_MODEL& model = mgr.CreateModel( *aSymbol ).model;
if( !field ) const SIM_MODEL::PARAM* tunerParam = model.GetTunerParam();
break;
field->SetText( aValue ); if( !tunerParam )
return;
model.SetParamValue( tunerParam->info.name, std::string( aValue.ToUTF8() ) );
model.WriteFields( aSymbol->GetFields() );
m_schematicFrame->UpdateItem( aSymbol, false, true ); m_schematicFrame->UpdateItem( aSymbol, false, true );
m_schematicFrame->OnModify(); m_schematicFrame->OnModify();
break;
} }
} }
} }
@ -923,17 +915,7 @@ void SIM_PLOT_FRAME::updateTuners()
void SIM_PLOT_FRAME::applyTuners() void SIM_PLOT_FRAME::applyTuners()
{ {
for( auto& tuner : m_tuners ) for( auto& tuner : m_tuners )
{ m_simulator->Command( tuner->GetTunerCommand() );
std::pair<wxString, bool> command = tuner->GetSpiceTuningCommand();
const SPICE_VALUE& value = tuner->GetValue();
// 0 < value < 1 for model parameter to avoid division by zero, etc.
command.first += command.second
? wxString::FromCDouble( Clamp( 1e-9, value.ToDouble() / 100.0, 1-1e-9 ), 9 )
: value.ToSpiceString();
m_simulator->Command( command.first.ToStdString() );
}
} }

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@ -116,7 +116,7 @@ public:
* @param aId id of the symbol field * @param aId id of the symbol field
* @param aValue new value of the symbol field * @param aValue new value of the symbol field
*/ */
void UpdateTunerValue( SCH_SYMBOL* aSymbol, int aId, const wxString& aValue ); void UpdateTunerValue( SCH_SYMBOL* aSymbol, const wxString& aValue );
/** /**
* Return the currently opened plot panel (or NULL if there is none). * Return the currently opened plot panel (or NULL if there is none).

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@ -156,9 +156,10 @@ std::string SPICE_GENERATOR::ItemParams() const
} }
std::string SPICE_GENERATOR::TuningLine( const SPICE_ITEM& aItem ) const std::string SPICE_GENERATOR::TunerCommand( const SPICE_ITEM& aItem,
const SIM_VALUE_FLOAT& aValue ) const
{ {
// TODO. // No tuning available by default.
return ""; return "";
} }

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@ -58,7 +58,7 @@ public:
virtual std::string ItemModelName( const SPICE_ITEM& aItem ) const; virtual std::string ItemModelName( const SPICE_ITEM& aItem ) const;
virtual std::string ItemParams() const; virtual std::string ItemParams() const;
virtual std::string TuningLine( const SPICE_ITEM& aItem ) const; virtual std::string TunerCommand( const SPICE_ITEM& aItem, const SIM_VALUE_FLOAT& aValue ) const;
virtual std::vector<std::string> CurrentNames( const SPICE_ITEM& aItem ) const; virtual std::vector<std::string> CurrentNames( const SPICE_ITEM& aItem ) const;

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@ -35,190 +35,49 @@
#include <complex> // norm #include <complex> // norm
// characteristic curves (default: 0B Lin)
static const struct { double m_law, m_mid; } CURVES[] =
{
// same order as choices in m_curve
{ 1.00, 0.10 }, // 10A Log
{ 1.00, 0.15 }, // 15A Log
{ 0.90, 0.13 }, // 15A Log S
{ 0.00, 0.10 }, // 10C Rev Log
{ 0.00, 0.15 }, // 15C Rev Log
{ 0.10, 0.13 }, // 15C Rev Log S
{ 0.50, 0.50 }, // 0B Lin
{ 0.50, 0.15 }, // 4B S-Curve
{ 0.50, 0.10 }, // 5B S-Curve
{ 0.50, 0.00 } // Switch
};
template <typename T, int S>
static inline int arraysize( const T ( &v )[S] ) { return S; }
/**
* Transform ratio according to linear, logarithmic or reverse logarithmic laws
* (characteristic curve or taper) of rotary or slide potentiometer (pot or fader).
*
* Parameters corresponding to *IEC 60393-1:2008* and *JIS C 5260-1* code letters:
*
* | @p aLaw | @p aMid | Code | Resistance Law (Taper)
* | ------: | ------: | ---: | :---------------------
* | 1.00 | 0.10 | 10A | CW logarithmic
* | ^ | 0.15 | 15A | CW logarithmic (audio)
* | 0.90 | 0.13 | ^ | CW logarithmic (high-end audio)
* | 0.00 | 0.10 | 10C | CCW/reverse logarithmic
* | ^ | 0.15 | 15C | CCW/reverse logarithmic (reverse audio)
* | 0.10 | 0.13 | ^ | CCW/reverse logarithmic (high-end reverse audio)
* | 0.50 | 0.50 | 0B | (ideal) linear
* | ^ | 0.15 | 4B | symmetric (audio S-curve)
* | ^ | 0.10 | 5B | symmetric (S-curve)
* | ^ | 0.00 | - | switch
*
* Standards code letters cross-reference:
*
* | IEC 60393-1:2008 | IEC 60393-1:1989 | MIL-R-94 | Resistance Law
* | ----------------: | :--------------: | :------: | :-------------
* | 0B | A | A | linear
* | 10A | B | C | logarithmic
* | 15A | ^ | - | ^
* | 10C | C | F | reverse logarithmic
* | 15C | ^ | - | ^
*
* **Logarithmic Law** is for *levels* (logarithmic units) and is actually an exponential curve.
* **Reverse** refers to a reverse-mounted resistive element or shaft on a potentiometer
* (resulting in a reflected curve). An **S-curve** is a curve joined to its (scaled) reflection,
* and *may* be symmetric or linear. **Inverse** refers to the mathematical inverse of a function.
*
* @tparam F is a floating point type.
* @param aRatio is the input (travel) ratio or moving contact (wiper) position, from
* 0%/CCW/left (0) through 50%/mid-travel/center (1/2) to 100%/CW/right (1).
* @param aMid is the logarithmic laws' output ratio at 50%/mid-travel/center (1/2)
* input ratio.
* @param aLaw is the (resistance) law, interpolating from *reverse logarithmic* (0)
* through *symmetric/linear* (1/2) to *logarithmic* (1).
* @param aInverse swaps input and output ratios (inverse function, where possible),
* if @c true.
* @return the output (resistance or voltage) ratio in [0, 1].
*/
template <typename F>
static F taper( F aRatio, F aMid = 0.5, F aLaw = 1.0, bool aInverse = false )
{
static_assert( std::is_floating_point<F>::value, "F must be floating point" );
// clamp to [0, 1] and short-cut
if( aRatio <= 0 )
return 0;
if( aRatio >= 1 )
return 1;
// short-cut for ideal linear or at S-curve inflection point
if( aMid == 0.5 || aRatio == aLaw )
return aRatio;
F t = aRatio;
// clamp to [0, 1] and short-cut at (non-invertible) limits
if( aMid <= 0 )
{
t = aInverse ? 1 : 0;
}
else if( aMid >= 1 )
{
t = aInverse ? 0 : 1;
}
else
{
// clamp, and reflect and/or scale for reverse...symmetric...normal laws
if( aLaw >= 1 )
{
// Do nothing, leave t = t
}
else if( aLaw <= 0 )
{
t = 1 - t;
}
else if( aRatio <= aLaw )
{
t = t / aLaw;
}
else
{
t = ( 1 - t ) / ( 1 - aLaw );
}
// scaling factors for domain and range in [0, 1]
F a = std::norm( 1 - 1 / aMid );
F b = std::log( a );
F c = a - 1;
// scaling: a = (1 - 1/m)^2
// log law: (a^t - 1) / (a - 1)
// inverse: log_a(1 + t (a - 1))
t = aInverse ? ( std::log1p( t * c ) / b ) : ( std::expm1( t * b ) / c );
}
// clamp, and scale and/or reflect for reverse...symmetric...normal laws
if( aLaw >= 1 )
{
// Do nothing, leave t = t
}
else if( aLaw <= 0 )
{
t = 1 - t;
}
else if( aRatio <= aLaw )
{
t = t * aLaw;
}
else
{
t = 1 - t * ( 1-aLaw );
}
return t;
}
TUNER_SLIDER::TUNER_SLIDER( SIM_PLOT_FRAME* aFrame, wxWindow* aParent, SCH_SYMBOL* aSymbol ) : TUNER_SLIDER::TUNER_SLIDER( SIM_PLOT_FRAME* aFrame, wxWindow* aParent, SCH_SYMBOL* aSymbol ) :
TUNER_SLIDER_BASE( aParent ), TUNER_SLIDER_BASE( aParent ),
m_symbol( aSymbol ), m_symbol( aSymbol ),
m_fieldId( MANDATORY_FIELD_T::VALUE_FIELD ),
m_min( 0.0 ), m_min( 0.0 ),
m_max( 0.0 ), m_max( 0.0 ),
m_value( 0.0 ), m_value( 0.0 ),
m_changed( false ), m_changed( false ),
m_frame ( aFrame ) m_frame ( aFrame )
{ {
// TODO. wxString ref = aSymbol->GetField( REFERENCE_FIELD )->GetShownText();
m_item = aFrame->GetExporter()->FindItem( std::string( ref.ToUTF8() ) );
/*const wxString compName = aSymbol->GetField( REFERENCE_FIELD )->GetText(); if( !m_item )
m_name->SetLabel( compName ); throw KI_PARAM_ERROR( wxString::Format( _( "Could not find Spice item with reference '%s'" ),
m_spiceTuningCommand = aFrame->GetExporter()->GetSpiceTuningCommand( compName ); ref ) );
if( m_spiceTuningCommand.second ) m_name->SetLabel( ref );
const SIM_MODEL::PARAM* tunerParam = m_item->model->GetTunerParam();
if( !tunerParam )
throw KI_PARAM_ERROR( wxString::Format(
_( "Symbol '%s' has simulation model of type '%s %s', which cannot be tuned" ),
ref,
m_item->model->GetDeviceTypeInfo().fieldValue,
m_item->model->GetTypeInfo().fieldValue ) );
m_value = SPICE_VALUE( m_item->model->GetTunerParam()->value->ToSpiceString() );
// Special case for potentiometers because we don't have value ranges implemented yet.
if( m_item->model->GetType() == SIM_MODEL::TYPE::R_POT )
{ {
// model parameter, with fixed %-range and unknown initial value m_min = SPICE_VALUE( 0 );
m_min = 0; m_max = SPICE_VALUE( 1 );
m_max = 100;
m_value = ( m_max - m_min ) / 2.0; // midpoint
m_minText->Disable();
m_maxText->Disable();
m_saveBtn->Disable(); // not an instance parameter that could be updated (invalid m_fieldId)
} }
else else
{ {
// instance parameter
if( aSymbol->FindField( netlist_exporter_spice::GetSpiceFieldName( SF_MODEL ) ) )
m_fieldId = aSymbol->FindField( netlist_exporter_spice::GetSpiceFieldName( SF_MODEL ) )->GetId();
else
m_fieldId = aSymbol->GetField( VALUE_FIELD )->GetId();
m_value = SPICE_VALUE( aSymbol->GetFieldById( m_fieldId )->GetText() );
m_min = SPICE_VALUE( 0.5 ) * m_value; m_min = SPICE_VALUE( 0.5 ) * m_value;
m_max = SPICE_VALUE( 2.0 ) * m_value; m_max = SPICE_VALUE( 2.0 ) * m_value;
} }
// Call Set*() methods to update fields and slider
m_minText->SetValue( m_min.ToOrigString() ); m_minText->SetValue( m_min.ToOrigString() );
m_maxText->SetValue( m_max.ToOrigString() ); m_maxText->SetValue( m_max.ToOrigString() );
@ -226,7 +85,14 @@ TUNER_SLIDER::TUNER_SLIDER( SIM_PLOT_FRAME* aFrame, wxWindow* aParent, SCH_SYMBO
updateSlider(); updateSlider();
m_simTimer.SetOwner( this ); m_simTimer.SetOwner( this );
Connect( wxEVT_TIMER, wxTimerEventHandler( TUNER_SLIDER::onSimTimer ), nullptr, this );*/ Connect( wxEVT_TIMER, wxTimerEventHandler( TUNER_SLIDER::onSimTimer ), nullptr, this );
}
std::string TUNER_SLIDER::GetTunerCommand() const
{
return m_item->model->SpiceGenerator().TunerCommand( *m_item,
SIM_VALUE_FLOAT( m_value.ToDouble() ) );
} }
@ -292,13 +158,7 @@ void TUNER_SLIDER::updateComponentValue()
void TUNER_SLIDER::updateSlider() void TUNER_SLIDER::updateSlider()
{ {
wxASSERT( m_max >= m_value && m_value >= m_min ); wxASSERT( m_max >= m_value && m_value >= m_min );
m_slider->SetValue( ( ( m_value - m_min ) / ( m_max - m_min ) ).ToDouble() * 100 );
int choice = m_curve->GetSelection();
wxCHECK( choice >= 0 && choice < arraysize( CURVES ), /*void*/ );
double ratio = ( ( m_value - m_min ) / ( m_max - m_min ) ).ToDouble();
double travel = taper( ratio, CURVES[choice].m_mid, CURVES[choice].m_law, true );
m_slider->SetValue( KiROUND( travel * 100.0 ) );
} }
@ -363,18 +223,13 @@ void TUNER_SLIDER::onClose( wxCommandEvent& event )
void TUNER_SLIDER::onSave( wxCommandEvent& event ) void TUNER_SLIDER::onSave( wxCommandEvent& event )
{ {
m_frame->UpdateTunerValue( m_symbol, m_fieldId, m_value.ToOrigString() ); m_frame->UpdateTunerValue( m_symbol, m_value.ToOrigString() );
} }
void TUNER_SLIDER::onSliderChanged( wxScrollEvent& event ) void TUNER_SLIDER::onSliderChanged( wxScrollEvent& event )
{ {
int choice = m_curve->GetSelection(); m_value = m_min + ( m_max - m_min ) * SPICE_VALUE( m_slider->GetValue() / 100.0 );
wxCHECK( choice >= 0 && choice < arraysize( CURVES ), /*void*/ );
double travel = m_slider->GetValue() / 100.0;
double ratio = taper( travel, CURVES[choice].m_mid, CURVES[choice].m_law, false );
m_value = m_min + ( m_max - m_min ) * SPICE_VALUE( ratio );
updateValueText(); updateValueText();
updateComponentValue(); updateComponentValue();
m_changed = true; m_changed = true;

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@ -30,6 +30,7 @@
#include "tuner_slider_base.h" #include "tuner_slider_base.h"
#include <sim/spice_value.h> #include <sim/spice_value.h>
#include <sim/spice_generator.h>
#include <wx/timer.h> #include <wx/timer.h>
@ -49,16 +50,6 @@ public:
return m_name->GetLabel(); return m_name->GetLabel();
} }
const std::pair<wxString, bool>& GetSpiceTuningCommand() const
{
return m_spiceTuningCommand;
}
const SPICE_VALUE& GetValue() const
{
return m_value;
}
const SPICE_VALUE& GetMin() const const SPICE_VALUE& GetMin() const
{ {
return m_min; return m_min;
@ -69,6 +60,8 @@ public:
return m_max; return m_max;
} }
std::string GetTunerCommand() const;
bool SetValue( const SPICE_VALUE& aVal ); bool SetValue( const SPICE_VALUE& aVal );
bool SetMin( const SPICE_VALUE& aVal ); bool SetMin( const SPICE_VALUE& aVal );
bool SetMax( const SPICE_VALUE& aVal ); bool SetMax( const SPICE_VALUE& aVal );
@ -97,14 +90,12 @@ private:
void onSimTimer( wxTimerEvent& event ); void onSimTimer( wxTimerEvent& event );
std::pair<wxString, bool> m_spiceTuningCommand;
///< Timer that restarts the simulation after the slider value has changed ///< Timer that restarts the simulation after the slider value has changed
wxTimer m_simTimer; wxTimer m_simTimer;
SCH_SYMBOL* m_symbol; SCH_SYMBOL* m_symbol;
const SPICE_ITEM* m_item;
int m_fieldId;
SPICE_VALUE m_min, m_max, m_value; SPICE_VALUE m_min, m_max, m_value;
bool m_changed; bool m_changed;