DifferentialVoltage.hpp

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/*
 * Copyright (C) Cross The Road Electronics.  All rights reserved.
 * License information can be found in CTRE_LICENSE.txt
 * For support and suggestions contact support@ctr-electronics.com or file
 * an issue tracker at https://github.com/CrossTheRoadElec/Phoenix-Releases
 */
#pragma once
 
#include "ctre/phoenix6/configs/Configs.hpp"
#include "ctre/phoenix6/controls/ControlRequest.hpp"
#include "ctre/phoenix6/networking/interfaces/Control_Interface.h"
#include <sstream>
#include <units/voltage.h>
#include <units/angle.h>
#include <units/frequency.h>
#include <units/time.h>
 
 
namespace ctre {
namespace phoenix6 {
namespace controls {
 
/**
 * Request a specified voltage with a differential position closed-loop.
 * 
 * This control mode will attempt to apply the specified voltage to the motor. If the supply voltage is below
 * the requested voltage, the motor controller will output the supply voltage. It will also set the motor's
 * differential position setpoint to the specified position.
 */
class DifferentialVoltage : public ControlRequest
{
    bool ApplyConfigsOnRequest{false};
 
    ctre::phoenix::StatusCode SendRequest(const char *network, uint32_t deviceHash, bool cancelOtherRequests, std::shared_ptr<ControlRequest> &req) override
    {
        if (req.get() != this)
        {
            auto const reqCast = dynamic_cast<DifferentialVoltage *>(req.get());
            if (reqCast != nullptr)
            {
                *reqCast = *this;
            }
            else
            {
                req = std::make_shared<DifferentialVoltage>(*this);
            }
        }
 
        std::stringstream ss;
        ss << Voltage.Serialize();
        std::string strs{ss.str()};
        c_ctre_phoenix6_requestConfigApply(network, deviceHash, ConfigTimeout.to<double>(), strs.c_str(), strs.length(), ApplyConfigsOnRequest);
        ApplyConfigsOnRequest = false;
        return c_ctre_phoenix6_RequestControlDifferentialVoltage(network, deviceHash, UpdateFreqHz.to<double>(), cancelOtherRequests, TargetOutput.to<double>(), DifferentialPosition.to<double>(), EnableFOC, DifferentialSlot, OverrideBrakeDurNeutral);
    }
 
public:
    /**
     * Voltage to attempt to drive at
     */
    units::voltage::volt_t TargetOutput;
    /**
     * Differential position to drive towards in rotations
     */
    units::angle::turn_t DifferentialPosition;
    /**
     * Set to true to use FOC commutation (requires Phoenix Pro), which increases
     * peak power by ~15%. Set to false to use trapezoidal commutation.  FOC
     * improves motor performance by leveraging torque (current) control.  However,
     * this may be inconvenient for applications that require specifying duty cycle
     * or voltage.  CTR-Electronics has developed a hybrid method that combines the
     * performances gains of FOC while still allowing applications to provide duty
     * cycle or voltage demand.  This not to be confused with simple sinusoidal
     * control or phase voltage control which lacks the performance gains.
     */
    bool EnableFOC;
    /**
     * Select which gains are applied to the differential controller by selecting
     * the slot.  Use the configuration api to set the gain values for the selected
     * slot before enabling this feature. Slot must be within [0,2].
     */
    int DifferentialSlot;
    /**
     * Set to true to static-brake the rotor when output is zero (or within
     * deadband).  Set to false to use the NeutralMode configuration setting
     * (default). This flag exists to provide the fundamental behavior of this
     * control when output is zero, which is to provide 0V to the motor.
     */
    bool OverrideBrakeDurNeutral;
 
    /**
     * \brief Voltage-specific configs
     * 
     * \details Voltage-specific configs
     */
    configs::VoltageConfigs Voltage;
 
    /**
     * \brief The timeout when sending configs associated with this control
     */
    units::time::second_t ConfigTimeout{0.1_s};
 
    /**
     * \brief The period at which this control will update at.
     * This is designated in Hertz, with a minimum of 20 Hz
     * (every 50 ms) and a maximum of 1000 Hz (every 1 ms).
     *
     * If this field is set to 0 Hz, the control request will
     * be sent immediately as a one-shot frame. This may be useful
     * for advanced applications that require outputs to be
     * synchronized with data acquisition. In this case, we
     * recommend not exceeding 50 ms between control calls.
     */
    units::frequency::hertz_t UpdateFreqHz{100_Hz}; // Default to 100_Hz
 
    /**
     * \brief Request a specified voltage with a differential position closed-loop.
     * 
     * \details This control mode will attempt to apply the specified voltage to the
     *          motor. If the supply voltage is below the requested voltage, the
     *          motor controller will output the supply voltage. It will also set
     *          the motor's differential position setpoint to the specified
     *          position.
     * 
     * \param TargetOutput    Voltage to attempt to drive at
     * \param DifferentialPosition    Differential position to drive towards in
     *                                rotations
     * \param EnableFOC    Set to true to use FOC commutation (requires Phoenix
     *                     Pro), which increases peak power by ~15%. Set to false to
     *                     use trapezoidal commutation.  FOC improves motor
     *                     performance by leveraging torque (current) control. 
     *                     However, this may be inconvenient for applications that
     *                     require specifying duty cycle or voltage. 
     *                     CTR-Electronics has developed a hybrid method that
     *                     combines the performances gains of FOC while still
     *                     allowing applications to provide duty cycle or voltage
     *                     demand.  This not to be confused with simple sinusoidal
     *                     control or phase voltage control which lacks the
     *                     performance gains.
     * \param DifferentialSlot    Select which gains are applied to the differential
     *                            controller by selecting the slot.  Use the
     *                            configuration api to set the gain values for the
     *                            selected slot before enabling this feature. Slot
     *                            must be within [0,2].
     * \param OverrideBrakeDurNeutral    Set to true to static-brake the rotor when
     *                                   output is zero (or within deadband).  Set
     *                                   to false to use the NeutralMode
     *                                   configuration setting (default). This flag
     *                                   exists to provide the fundamental behavior
     *                                   of this control when output is zero, which
     *                                   is to provide 0V to the motor.
     */
    DifferentialVoltage(units::voltage::volt_t TargetOutput, units::angle::turn_t DifferentialPosition, bool EnableFOC, int DifferentialSlot, bool OverrideBrakeDurNeutral) : ControlRequest{"DifferentialVoltage"},
        TargetOutput{std::move(TargetOutput)},
        DifferentialPosition{std::move(DifferentialPosition)},
        EnableFOC{std::move(EnableFOC)},
        DifferentialSlot{std::move(DifferentialSlot)},
        OverrideBrakeDurNeutral{std::move(OverrideBrakeDurNeutral)}
    {}
 
        /**
     * \brief Request a specified voltage with a differential position closed-loop.
     * 
     * \details This control mode will attempt to apply the specified voltage to the
     *          motor. If the supply voltage is below the requested voltage, the
     *          motor controller will output the supply voltage. It will also set
     *          the motor's differential position setpoint to the specified
     *          position.
     * 
     * \param TargetOutput    Voltage to attempt to drive at
     * \param DifferentialPosition    Differential position to drive towards in
     *                                rotations
     */
    DifferentialVoltage(units::voltage::volt_t TargetOutput, units::angle::turn_t DifferentialPosition) : DifferentialVoltage{TargetOutput, DifferentialPosition, true, 1, false}
    {}
    
    /**
     * \brief Modifies this Control Request's TargetOutput parameter and returns itself for
     *        method-chaining and easier to use request API.
     * \param newTargetOutput Parameter to modify
     * \returns Itself
     */
    DifferentialVoltage& WithTargetOutput(units::voltage::volt_t newTargetOutput)
    {
        TargetOutput = std::move(newTargetOutput);
        return *this;
    }
    
    /**
     * \brief Modifies this Control Request's DifferentialPosition parameter and returns itself for
     *        method-chaining and easier to use request API.
     * \param newDifferentialPosition Parameter to modify
     * \returns Itself
     */
    DifferentialVoltage& WithDifferentialPosition(units::angle::turn_t newDifferentialPosition)
    {
        DifferentialPosition = std::move(newDifferentialPosition);
        return *this;
    }
    
    /**
     * \brief Modifies this Control Request's EnableFOC parameter and returns itself for
     *        method-chaining and easier to use request API.
     * \param newEnableFOC Parameter to modify
     * \returns Itself
     */
    DifferentialVoltage& WithEnableFOC(bool newEnableFOC)
    {
        EnableFOC = std::move(newEnableFOC);
        return *this;
    }
    
    /**
     * \brief Modifies this Control Request's DifferentialSlot parameter and returns itself for
     *        method-chaining and easier to use request API.
     * \param newDifferentialSlot Parameter to modify
     * \returns Itself
     */
    DifferentialVoltage& WithDifferentialSlot(int newDifferentialSlot)
    {
        DifferentialSlot = std::move(newDifferentialSlot);
        return *this;
    }
    
    /**
     * \brief Modifies this Control Request's OverrideBrakeDurNeutral parameter and returns itself for
     *        method-chaining and easier to use request API.
     * \param newOverrideBrakeDurNeutral Parameter to modify
     * \returns Itself
     */
    DifferentialVoltage& WithOverrideBrakeDurNeutral(bool newOverrideBrakeDurNeutral)
    {
        OverrideBrakeDurNeutral = std::move(newOverrideBrakeDurNeutral);
        return *this;
    }
    /**
     * \brief Sets the period at which this control will update at.
     * This is designated in Hertz, with a minimum of 20 Hz
     * (every 50 ms) and a maximum of 1000 Hz (every 1 ms).
     *
     * If this field is set to 0 Hz, the control request will
     * be sent immediately as a one-shot frame. This may be useful
     * for advanced applications that require outputs to be
     * synchronized with data acquisition. In this case, we
     * recommend not exceeding 50 ms between control calls.
     *
     * \param newUpdateFreqHz Parameter to modify
     * \returns Itself
     */
    DifferentialVoltage &WithUpdateFreqHz(units::frequency::hertz_t newUpdateFreqHz)
    {
        UpdateFreqHz = newUpdateFreqHz;
        return *this;
    }
    /**
     * Returns a string representation of the object.
     *
     * \returns a string representation of the object.
     */
    std::string ToString() const override
    {
        std::stringstream ss;
        ss << "class: DifferentialVoltage" << std::endl;
        ss << "TargetOutput: " << TargetOutput.to<double>() << std::endl;
        ss << "DifferentialPosition: " << DifferentialPosition.to<double>() << std::endl;
        ss << "EnableFOC: " << EnableFOC << std::endl;
        ss << "DifferentialSlot: " << DifferentialSlot << std::endl;
        ss << "OverrideBrakeDurNeutral: " << OverrideBrakeDurNeutral << std::endl;
        return ss.str();
    }
 
    /**
     * \brief Forces configs to be applied the next time this is used in a setControl.
     *        This is not necessary in the majority of cases, because Phoenix will make sure configs are
     *        properly set when they are not already set
     */
    void ForceApplyConfigs() { ApplyConfigsOnRequest = true; }
 
    /**
     * \brief Gets information about this control request.
     *
     * \returns Map of control parameter names and corresponding applied values
     */
    std::map<std::string, std::string> GetControlInfo() const override
    {
        std::map<std::string, std::string> controlInfo;
        std::stringstream ss;
        controlInfo["Name"] = GetName();
        ss << TargetOutput.to<double>(); controlInfo["TargetOutput"] = ss.str(); ss.str(std::string{});
        ss << DifferentialPosition.to<double>(); controlInfo["DifferentialPosition"] = ss.str(); ss.str(std::string{});
        ss << EnableFOC; controlInfo["EnableFOC"] = ss.str(); ss.str(std::string{});
        ss << DifferentialSlot; controlInfo["DifferentialSlot"] = ss.str(); ss.str(std::string{});
        ss << OverrideBrakeDurNeutral; controlInfo["OverrideBrakeDurNeutral"] = ss.str(); ss.str(std::string{});
        return controlInfo;
    }
};
 
}
}
}