fixed and improved ui
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Martino Ferrari
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/**
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* @file PulseGeneratorGAM.h
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* @brief GAM that synthesizes a triggered high-voltage pulse waveform.
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* @date 29/08/2026
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* @author Martino Ferrari
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*
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* @copyright Copyright 2015 F4E | European Joint Undertaking for ITER and
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* the Development of Fusion Energy ('Fusion for Energy').
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* Licensed under the EUPL, Version 1.1 or - as soon they will be approved
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* by the European Commission - subsequent versions of the EUPL (the "Licence")
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* You may not use this work except in compliance with the Licence.
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* You may obtain a copy of the Licence at: http://ec.europa.eu/idabc/eupl
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*
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* @warning Unless required by applicable law or agreed to in writing,
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* software distributed under the Licence is distributed on an "AS IS"
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* basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the Licence permissions and limitations under the Licence.
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*
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* @details Emulates a charged-capacitor pulse discharge on a high-voltage bus:
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*
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* - on a rising edge of the (optional) Trigger input — the EPICS "start"
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* setpoint — the output ramps linearly from its current level to HighLevel
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* over RampUpMs (default 1 ms, the charger ramp);
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* - it then holds HighLevel flat for PlateauMs — read from the (optional)
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* PlateauMs input at trigger time, i.e. the EPICS "duration" setpoint;
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* - finally it ramps back to 0 over RampDownMs (default 100 ms, the
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* capacitive discharge);
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* - until the next trigger the output sits at 0 (the "off" phase).
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*
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* Gaussian noise (NoiseStdDev, default 333.33 V → 3σ ≈ ±1000 V) is added to
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* every sample, and random EMI spikes of ±EMIAmplitude (default 5000 V,
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* probability EMIProbabilityPerSample per sample, EMISpikeSamples long) strike
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* during both the on and off phases.
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*
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* With no Trigger input connected, AutoTriggerPeriodMs > 0 self-triggers the
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* sequence periodically so the GAM runs standalone.
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*
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* Configuration:
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* <pre>
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* +MyGAM = {
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* Class = PulseGeneratorGAM
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* SamplingRate = 1000000.0 // must match the output signal rate
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* RampUpMs = 1.0
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* RampDownMs = 100.0
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* HighLevel = -40000.0
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* NoiseStdDev = 333.33
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* EMIAmplitude = 5000.0
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* EMIProbabilityPerSample = 0.00001
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* EMISpikeSamples = 5
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* PlateauMsDefault = 500.0 // used when PlateauMs input absent
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* AutoTriggerPeriodMs = 0.0 // 0 = external trigger only
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* Seed = 0 // PRNG seed; 0 = from wall clock
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* InputSignals = { // optional: 0, 1 or 2 inputs
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* Trigger = { DataSource = DDB; Type = float32 }
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* PlateauMs = { DataSource = DDB; Type = float32 }
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* }
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* OutputSignals = {
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* HV = { DataSource = DDB; Type = float32; NumberOfElements = 1000 }
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* }
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* }
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* </pre>
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*/
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#ifndef PULSEGENERATORGAM_H_
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#define PULSEGENERATORGAM_H_
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/*---------------------------------------------------------------------------*/
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/* Standard header includes */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/* Project header includes */
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/*---------------------------------------------------------------------------*/
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#include "CompilerTypes.h"
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#include "GAM.h"
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/*---------------------------------------------------------------------------*/
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/* Class declaration */
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/*---------------------------------------------------------------------------*/
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namespace MARTe {
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class PulseGeneratorGAM : public GAM {
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public:
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CLASS_REGISTER_DECLARATION()
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/**
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* @brief Constructor. Sets safe defaults.
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*/
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PulseGeneratorGAM();
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/**
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* @brief Destructor.
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*/
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virtual ~PulseGeneratorGAM();
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/**
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* @brief Reads the waveform parameters from config and seeds the PRNG.
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*/
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virtual bool Initialise(StructuredDataI &data);
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/**
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* @brief Resolves the output array and the optional input scalars.
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* @return true if exactly one float32 output signal and at most two inputs.
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*/
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virtual bool Setup();
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/**
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* @brief Emits the next block of waveform samples (noise + EMI included).
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* @return true always.
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*/
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virtual bool Execute();
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private:
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/** @brief Pulse state machine phases. */
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typedef enum {
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PulsePhaseOff = 0u, /**< Output at 0 V, waiting for a trigger */
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PulsePhaseRampUp = 1u, /**< Charger ramp: startLevel → HighLevel */
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PulsePhaseFlat = 2u, /**< Holding HighLevel for the plateau */
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PulsePhaseRampDown = 3u /**< Discharge ramp: HighLevel → 0 */
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} PulsePhase;
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float64 samplingRate; /**< Sample rate [Hz] */
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float64 rampUpMs; /**< Charger ramp duration [ms] */
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float64 rampDownMs; /**< Discharge ramp duration [ms] */
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float64 highLevel; /**< Plateau level [V] */
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float64 noiseStdDev; /**< Gaussian noise sigma [V] */
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float64 emiAmplitude; /**< EMI spike amplitude [V] */
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float64 emiProbabilityPerSample; /**< Probability of starting an EMI spike per sample */
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uint32 emiSpikeSamples; /**< Length of one EMI spike [samples] */
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float64 plateauMsDefault; /**< Plateau used when the PlateauMs input is absent [ms] */
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float64 autoTriggerPeriodMs; /**< Self-trigger period [ms]; 0 = external only */
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uint32 seed; /**< PRNG seed; 0 = wall clock */
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uint32 nElements; /**< Output samples per Execute() call */
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float32 *outputBuf; /**< Output waveform memory */
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float32 *triggerIn; /**< Optional rising-edge trigger input */
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float32 *plateauMsIn; /**< Optional plateau-duration input [ms] */
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PulsePhase phase; /**< Current state machine phase */
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float64 startLevel; /**< Waveform level when the current ramp started */
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float64 currentLevel; /**< Clean (pre-noise) level of the last emitted sample */
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uint64 phaseElapsed; /**< Samples consumed in the current phase */
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uint64 phaseTotal; /**< Total samples of the current phase */
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uint64 rampUpSamples; /**< RampUpMs expressed in samples */
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uint64 rampDownSamples; /**< RampDownMs expressed in samples */
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uint64 plateauSamples; /**< Plateau for the current pulse [samples] */
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float64 prevTrigger; /**< Previous Trigger input value (edge detection) */
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uint64 samplesSinceTrigger; /**< Samples since the last trigger (auto-trigger) */
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uint32 spikeRemaining; /**< Samples left in the current EMI spike */
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float64 spikeValue; /**< Signed amplitude of the current EMI spike */
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/** @brief Starts a new pulse: ramp up from the current level. */
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void StartSequence(float64 plateauMs);
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/** @brief Advances to the next phase, skipping zero-length ones. */
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void AdvanceToNextPhase();
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};
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} /* namespace MARTe */
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#endif /* PULSEGENERATORGAM_H_ */
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