sof.c

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/**
 *
 * @copyright © 2010 - 2021, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
 * All rights reserved.
 *
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/**
 * @file    sof.c
 * @author  foxBMS Team
 * @date    2020-10-07 (date of creation)
 * @updated 2021-03-24 (date of last update)
 * @ingroup APPLICATION_CONFIGURATION
 * @prefix  SOX
 *
 * @brief   SOX module responsible for current derating calculation
 *
 */
 
/*========== Includes =======================================================*/
#include "sof.h"
 
#include "battery_cell_cfg.h"
#include "battery_system_cfg.h"
 
#include "bms.h"
#include "database.h"
#include "foxmath.h"
 
#include <float.h>
 
/*========== Macros and Definitions =========================================*/
 
/*========== Static Constant and Variable Definitions =======================*/
/** @{
 * module-local static Variables that are calculated at startup and used later to avoid divisions at runtime
 */
static SOF_CURVE_s sof_curveRecommendedOperatingCurrent;
static SOF_CURVE_s sof_curveMol;
static SOF_CURVE_s sof_curveRsl;
static SOF_CURVE_s sof_curveMsl;
/** @} */
 
/** local copies of database tables */
/**@{*/
static DATA_BLOCK_MIN_MAX_s sof_tableMinimumMaximumValues = {.header.uniqueId = DATA_BLOCK_ID_MIN_MAX};
static DATA_BLOCK_SOF_s sof_tableSofValues                = {.header.uniqueId = DATA_BLOCK_ID_SOF};
/**@}*/
 
/*========== Extern Constant and Variable Definitions =======================*/
 
/*========== Static Function Prototypes =====================================*/
 
/**
 * @brief   calculate SOF curve depending on configured configuration values
 *
 * @param[in]  pConfigurationValues         SOF curve configuration values
 * @param[out] pCalculatedSofCurveValues    calculate SOF curve
 */
static void SOF_CalculateCurves(const SOF_CONFIG_s *pConfigurationValues, SOF_CURVE_s *pCalculatedSofCurveValues);
 
/**
 *  @brief  calculates the SoF from voltage data (i.e., minimum and maximum voltage)
 *
 * @param[in]  minimumCellVoltage_mV        minimum cell voltage
 * @param[in]  maximumCellVoltage_mV        maximum cell voltage
 * @param[out] pAllowedVoltageBasedCurrent  Voltage-based SOF
 * @param[in]  pConfigLimitValues           pointer to the SOF configuration structure
 * @param[in]  pCalculatedSofCurves         pointer to the SOF curve structure
 */
static void SOF_CalculateVoltageBasedCurrentLimit(
    int16_t minimumCellVoltage_mV,
    int16_t maximumCellVoltage_mV,
    SOF_CURRENT_LIMITS_s *pAllowedVoltageBasedCurrent,
    const SOF_CONFIG_s *pConfigLimitValues,
    SOF_CURVE_s *pCalculatedSofCurves);
 
/**
 * @brief   calculates the SoF from temperature data (i.e., minimum and maximum temperature of cells)
 *
 * @param[in]  minimumCellTemperature_ddegC      minimum temperature of cells
 * @param[in]  maximumCellTemperature_ddegC      maximum temperature of cells
 * @param[out] pAllowedTemperatureBasedCurrent   pointer where to store the results
 * @param[in]  pConfigLimitValues                pointer to the structure used for SOF calculation
 * @param[in]  pCalculatedSofCurves              pointer to the structure containing limit values
 */
static void SOF_CalculateTemperatureBasedCurrentLimit(
    int16_t minimumCellTemperature_ddegC,
    int16_t maximumCellTemperature_ddegC,
    SOF_CURRENT_LIMITS_s *pAllowedTemperatureBasedCurrent,
    const SOF_CONFIG_s *pConfigLimitValues,
    SOF_CURVE_s *pCalculatedSofCurves);
 
/**
 * @brief   get the minimum current values of all variants of SoF calculation
 *
 * @param[in]  voltageBasedLimits       voltage constrained current derating values
 * @param[in]  temperatureBasedLimits   temperature constrained current derating values
 *
 * @return minimum SoF current values
 */
static SOF_CURRENT_LIMITS_s SOF_MinimumOfTwoSofValues(
    SOF_CURRENT_LIMITS_s voltageBasedLimits,
    SOF_CURRENT_LIMITS_s temperatureBasedLimits);
 
/*========== Static Function Implementations ================================*/
static void SOF_CalculateCurves(const SOF_CONFIG_s *pConfigurationValues, SOF_CURVE_s *pCalculatedSofCurveValues) {
    FAS_ASSERT(pConfigurationValues != NULL_PTR);
    FAS_ASSERT(pCalculatedSofCurveValues != NULL_PTR);
 
    /* Calculating SOF curve for the maximum allowed current for MOL/RSL/MSL */
    pCalculatedSofCurveValues->slopeLowTemperatureDischarge =
        (pConfigurationValues->maximumDischargeCurrent_mA - pConfigurationValues->limpHomeCurrent_mA) /
        (pConfigurationValues->cutoffLowTemperatureDischarge_ddegC -
         pConfigurationValues->limitLowTemperatureDischarge_ddegC);
    pCalculatedSofCurveValues->offsetLowTemperatureDischarge =
        pConfigurationValues->limpHomeCurrent_mA - (pCalculatedSofCurveValues->slopeLowTemperatureDischarge *
                                                    pConfigurationValues->limitLowTemperatureDischarge_ddegC);
 
    pCalculatedSofCurveValues->slopeHighTemperatureDischarge =
        (0.0f - pConfigurationValues->maximumDischargeCurrent_mA) /
        (pConfigurationValues->limitHighTemperatureDischarge_ddegC -
         pConfigurationValues->cutoffHighTemperatureDischarge_ddegC);
    pCalculatedSofCurveValues->offsetHighTemperatureDischarge =
        0.0f - (pCalculatedSofCurveValues->slopeHighTemperatureDischarge *
                pConfigurationValues->limitHighTemperatureDischarge_ddegC);
 
    pCalculatedSofCurveValues->slopeLowTemperatureCharge = (pConfigurationValues->maximumChargeCurrent_mA - 0.0f) /
                                                           (pConfigurationValues->cutoffLowTemperatureCharge_ddegC -
                                                            pConfigurationValues->limitLowTemperatureCharge_ddegC);
    pCalculatedSofCurveValues->offsetLowTemperatureCharge =
        0.0f -
        (pCalculatedSofCurveValues->slopeLowTemperatureCharge * pConfigurationValues->limitLowTemperatureCharge_ddegC);
 
    pCalculatedSofCurveValues->slopeHighTemperatureCharge = (0.0f - pConfigurationValues->maximumChargeCurrent_mA) /
                                                            (pConfigurationValues->limitHighTemperatureCharge_ddegC -
                                                             pConfigurationValues->cutoffHighTemperatureCharge_ddegC);
    pCalculatedSofCurveValues->offsetHighTemperatureCharge = 0.0f -
                                                             (pCalculatedSofCurveValues->slopeHighTemperatureCharge *
                                                              pConfigurationValues->limitHighTemperatureCharge_ddegC);
 
    pCalculatedSofCurveValues->slopeUpperCellVoltage =
        (pConfigurationValues->maximumDischargeCurrent_mA - 0.0f) /
        (pConfigurationValues->cutoffLowerCellVoltage_mV - pConfigurationValues->limitLowerCellVoltage_mV);
    pCalculatedSofCurveValues->offsetUpperCellVoltage =
        0.0f - (pCalculatedSofCurveValues->slopeUpperCellVoltage * pConfigurationValues->limitLowerCellVoltage_mV);
 
    pCalculatedSofCurveValues->slopeLowerCellVoltage =
        (pConfigurationValues->maximumChargeCurrent_mA - 0.0f) /
        (pConfigurationValues->cutoffUpperCellVoltage_mV - pConfigurationValues->limitUpperCellVoltage_mV);
    pCalculatedSofCurveValues->offsetLowerCellVoltage =
        0.0f - (pCalculatedSofCurveValues->slopeLowerCellVoltage * pConfigurationValues->limitLowerCellVoltage_mV);
}
 
static void SOF_CalculateVoltageBasedCurrentLimit(
    int16_t minimumCellVoltage_mV,
    int16_t maximumCellVoltage_mV,
    SOF_CURRENT_LIMITS_s *pAllowedVoltageBasedCurrent,
    const SOF_CONFIG_s *pConfigLimitValues,
    SOF_CURVE_s *pCalculatedSofCurves) {
    FAS_ASSERT(pAllowedVoltageBasedCurrent != NULL_PTR);
    FAS_ASSERT(pConfigLimitValues != NULL_PTR);
    FAS_ASSERT(pCalculatedSofCurves != NULL_PTR);
 
    /* minimum cell voltage calculation */
    if (minimumCellVoltage_mV <= pConfigLimitValues->limitLowerCellVoltage_mV) {
        pAllowedVoltageBasedCurrent->continuousDischargeCurrent_mA = 0.0f;
        pAllowedVoltageBasedCurrent->peakDischargeCurrent_mA       = 0.0f;
    } else {
        if (minimumCellVoltage_mV <= pConfigLimitValues->cutoffLowerCellVoltage_mV) {
            pAllowedVoltageBasedCurrent->continuousDischargeCurrent_mA =
                (pCalculatedSofCurves->slopeUpperCellVoltage *
                 (minimumCellVoltage_mV - pConfigLimitValues->limitLowerCellVoltage_mV));
            pAllowedVoltageBasedCurrent->peakDischargeCurrent_mA =
                pAllowedVoltageBasedCurrent->continuousDischargeCurrent_mA;
        } else {
            pAllowedVoltageBasedCurrent->continuousDischargeCurrent_mA = pConfigLimitValues->maximumDischargeCurrent_mA;
            pAllowedVoltageBasedCurrent->peakDischargeCurrent_mA       = pConfigLimitValues->maximumDischargeCurrent_mA;
        }
    }
    /* maximum cell voltage calculation */
    if (maximumCellVoltage_mV >= pConfigLimitValues->limitUpperCellVoltage_mV) {
        pAllowedVoltageBasedCurrent->continuousChargeCurrent_mA = 0.0f;
        pAllowedVoltageBasedCurrent->peakChargeCurrent_mA       = 0.0f;
    } else {
        if (maximumCellVoltage_mV >= pConfigLimitValues->cutoffUpperCellVoltage_mV) {
            pAllowedVoltageBasedCurrent->continuousChargeCurrent_mA =
                (pCalculatedSofCurves->slopeLowerCellVoltage *
                 (maximumCellVoltage_mV - pConfigLimitValues->limitUpperCellVoltage_mV));
            pAllowedVoltageBasedCurrent->peakChargeCurrent_mA = pAllowedVoltageBasedCurrent->continuousChargeCurrent_mA;
        } else {
            pAllowedVoltageBasedCurrent->continuousChargeCurrent_mA = pConfigLimitValues->maximumChargeCurrent_mA;
            pAllowedVoltageBasedCurrent->peakChargeCurrent_mA       = pConfigLimitValues->maximumChargeCurrent_mA;
        }
    }
}
 
static void SOF_CalculateTemperatureBasedCurrentLimit(
    int16_t minimumCellTemperature_ddegC,
    int16_t maximumCellTemperature_ddegC,
    SOF_CURRENT_LIMITS_s *pAllowedTemperatureBasedCurrent,
    const SOF_CONFIG_s *pConfigLimitValues,
    SOF_CURVE_s *pCalculatedSofCurves) {
    FAS_ASSERT(pAllowedTemperatureBasedCurrent != NULL_PTR);
    FAS_ASSERT(pConfigLimitValues != NULL_PTR);
    FAS_ASSERT(pCalculatedSofCurves != NULL_PTR);
 
    SOF_CURRENT_LIMITS_s temporaryCurrentLimits = {0.0f, 0.0f, 0.0f, 0.0f};
    /* Temperature low Discharge */
    if (minimumCellTemperature_ddegC <= pConfigLimitValues->limitLowTemperatureDischarge_ddegC) {
        pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA = pConfigLimitValues->limpHomeCurrent_mA;
        pAllowedTemperatureBasedCurrent->peakDischargeCurrent_mA       = pConfigLimitValues->limpHomeCurrent_mA;
    } else {
        if (minimumCellTemperature_ddegC <= pConfigLimitValues->cutoffLowTemperatureDischarge_ddegC) {
            pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA =
                (pCalculatedSofCurves->slopeLowTemperatureDischarge * minimumCellTemperature_ddegC) +
                pCalculatedSofCurves->offsetLowTemperatureDischarge;
            pAllowedTemperatureBasedCurrent->peakDischargeCurrent_mA =
                pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA;
        } else {
            pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA =
                pConfigLimitValues->maximumDischargeCurrent_mA;
            pAllowedTemperatureBasedCurrent->peakDischargeCurrent_mA = pConfigLimitValues->maximumDischargeCurrent_mA;
        }
    }
    /* Temperature low charge */
    if (minimumCellTemperature_ddegC <= pConfigLimitValues->limitLowTemperatureCharge_ddegC) {
        pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA = 0;
        pAllowedTemperatureBasedCurrent->peakChargeCurrent_mA       = 0;
    } else {
        if (minimumCellTemperature_ddegC <= pConfigLimitValues->cutoffLowTemperatureCharge_ddegC) {
            pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA =
                (pCalculatedSofCurves->slopeLowTemperatureCharge * minimumCellTemperature_ddegC) +
                pCalculatedSofCurves->offsetLowTemperatureCharge;
            pAllowedTemperatureBasedCurrent->peakChargeCurrent_mA =
                pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA;
        } else {
            pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA = pConfigLimitValues->maximumChargeCurrent_mA;
            pAllowedTemperatureBasedCurrent->peakChargeCurrent_mA       = pConfigLimitValues->maximumChargeCurrent_mA;
        }
    }
    /* Temperature high discharge */
    if (maximumCellTemperature_ddegC >= pConfigLimitValues->limitHighTemperatureDischarge_ddegC) {
        pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA = 0.0f;
        pAllowedTemperatureBasedCurrent->peakDischargeCurrent_mA       = 0.0f;
    } else {
        if (maximumCellTemperature_ddegC >= pConfigLimitValues->cutoffHighTemperatureDischarge_ddegC) {
            temporaryCurrentLimits.continuousDischargeCurrent_mA =
                (pCalculatedSofCurves->slopeHighTemperatureDischarge * maximumCellTemperature_ddegC) +
                pCalculatedSofCurves->offsetHighTemperatureDischarge;
            temporaryCurrentLimits.peakDischargeCurrent_mA = temporaryCurrentLimits.continuousDischargeCurrent_mA;
        } else {
            /* do nothing because this situation is handled with minimumCellTemperature_ddegC */
            temporaryCurrentLimits.continuousDischargeCurrent_mA = pConfigLimitValues->maximumDischargeCurrent_mA;
            temporaryCurrentLimits.peakDischargeCurrent_mA       = pConfigLimitValues->maximumDischargeCurrent_mA;
        }
        /* Derating value for minimum cell temperature has already been calculated and result is saved in
           pAllowedTemperatureBasedCurrentCheck. Check now if newly calculated derating value for maximum
           cell temperatures is smaller than the previously calculated value */
        pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA = MATH_MinimumOfTwoFloats(
            pAllowedTemperatureBasedCurrent->continuousDischargeCurrent_mA,
            temporaryCurrentLimits.continuousDischargeCurrent_mA);
        pAllowedTemperatureBasedCurrent->peakDischargeCurrent_mA = MATH_MinimumOfTwoFloats(
            pAllowedTemperatureBasedCurrent->peakDischargeCurrent_mA, temporaryCurrentLimits.peakDischargeCurrent_mA);
    }
    /* Temperature high Charge */
    if (maximumCellTemperature_ddegC >= pConfigLimitValues->limitHighTemperatureCharge_ddegC) {
        pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA = 0.0f;
        pAllowedTemperatureBasedCurrent->peakChargeCurrent_mA       = 0.0f;
    } else {
        if (maximumCellTemperature_ddegC >= pConfigLimitValues->cutoffHighTemperatureCharge_ddegC) {
            temporaryCurrentLimits.continuousChargeCurrent_mA =
                (pCalculatedSofCurves->slopeHighTemperatureCharge * maximumCellTemperature_ddegC) +
                pCalculatedSofCurves->offsetHighTemperatureCharge;
            temporaryCurrentLimits.peakChargeCurrent_mA = temporaryCurrentLimits.continuousChargeCurrent_mA;
        } else {
            /* do nothing because this situation is handled with minimumCellTemperature_ddegC */
            temporaryCurrentLimits.continuousChargeCurrent_mA = pConfigLimitValues->maximumChargeCurrent_mA;
            temporaryCurrentLimits.peakChargeCurrent_mA       = pConfigLimitValues->maximumChargeCurrent_mA;
        }
        /* Derating value for minimum cell temperature has already been calculated and result is saved in
           pAllowedTemperatureBasedCurrentCheck. Check now if newly calculated derating value for maximum
           cell temperatures is smaller than the previously calculated value */
        pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA = MATH_MinimumOfTwoFloats(
            pAllowedTemperatureBasedCurrent->continuousChargeCurrent_mA,
            temporaryCurrentLimits.continuousChargeCurrent_mA);
        pAllowedTemperatureBasedCurrent->peakChargeCurrent_mA = MATH_MinimumOfTwoFloats(
            pAllowedTemperatureBasedCurrent->peakChargeCurrent_mA, temporaryCurrentLimits.peakChargeCurrent_mA);
    }
}
 
static SOF_CURRENT_LIMITS_s SOF_MinimumOfTwoSofValues(
    SOF_CURRENT_LIMITS_s voltageBasedLimits,
    SOF_CURRENT_LIMITS_s temperatureBasedLimits) {
    SOF_CURRENT_LIMITS_s retval       = {0};
    retval.continuousChargeCurrent_mA = MATH_MinimumOfTwoFloats(
        voltageBasedLimits.continuousChargeCurrent_mA, temperatureBasedLimits.continuousChargeCurrent_mA);
    retval.peakChargeCurrent_mA =
        MATH_MinimumOfTwoFloats(voltageBasedLimits.peakChargeCurrent_mA, temperatureBasedLimits.peakChargeCurrent_mA);
    retval.continuousDischargeCurrent_mA = MATH_MinimumOfTwoFloats(
        voltageBasedLimits.continuousDischargeCurrent_mA, temperatureBasedLimits.continuousDischargeCurrent_mA);
    retval.peakDischargeCurrent_mA = MATH_MinimumOfTwoFloats(
        voltageBasedLimits.peakDischargeCurrent_mA, temperatureBasedLimits.peakDischargeCurrent_mA);
    return retval;
}
 
/*========== Extern Function Implementations ================================*/
extern void SOF_Init(void) {
    /* Calculating SOF curve for the recommended operating current */
    SOF_CalculateCurves(&sof_recommendedCurrent, &sof_curveRecommendedOperatingCurrent);
 
#if BMS_CHECK_SOF_CURRENT_LIMITS == true
    /* Calculating SOF curve for maximum operating limit */
    SOF_CalculateCurves(&sof_maximumOperatingLimit, &sof_curveMol);
 
    /* Calculating SOF curve for recommended safety limit */
    SOF_CalculateCurves(&sof_recommendedSafetyLimit, &sof_curveRsl);
 
    /* Calculating SOF curve for maximum safety limit */
    SOF_CalculateCurves(&sof_configMaximumSafetyLimit, &sof_curveMsl);
#endif
}
 
extern void SOF_Calculation(void) {
    SOF_CURRENT_LIMITS_s allowedCurrent = {0};
 
    DATA_READ_DATA(&sof_tableMinimumMaximumValues);
 
    /* Reset allowed current values */
    sof_tableSofValues.recommendedContinuousPackChargeCurrent_mA    = 0.0f;
    sof_tableSofValues.recommendedContinuousPackDischargeCurrent_mA = 0.0f;
    sof_tableSofValues.recommendedPeakPackChargeCurrent_mA          = 0.0f;
    sof_tableSofValues.recommendedPeakPackDischargeCurrent_mA       = 0.0f;
 
    uint8_t nrClosedStrings = 0;
    float minDischarge_mA   = FLT_MAX;
    float minCharge_mA      = FLT_MAX;
 
    for (uint8_t stringNumber = 0u; stringNumber < BS_NR_OF_STRINGS; stringNumber++) {
        SOF_CURRENT_LIMITS_s voltageBasedSof     = {0};
        SOF_CURRENT_LIMITS_s temperatureBasedSof = {0};
        /* Calculate allowed current if string is connected */
        if (true == BMS_IsStringClosed(stringNumber)) {
            SOF_CalculateVoltageBasedCurrentLimit(
                (float)sof_tableMinimumMaximumValues.minimumCellVoltage_mV[stringNumber],
                (float)sof_tableMinimumMaximumValues.maximumCellVoltage_mV[stringNumber],
                &voltageBasedSof,
                &sof_recommendedCurrent,
                &sof_curveRecommendedOperatingCurrent);
            SOF_CalculateTemperatureBasedCurrentLimit(
                (float)sof_tableMinimumMaximumValues.minimumTemperature_ddegC[stringNumber],
                (float)sof_tableMinimumMaximumValues.maximumTemperature_ddegC[stringNumber],
                &temperatureBasedSof,
                &sof_recommendedCurrent,
                &sof_curveRecommendedOperatingCurrent);
            allowedCurrent = SOF_MinimumOfTwoSofValues(voltageBasedSof, temperatureBasedSof);
 
            sof_tableSofValues.recommendedContinuousChargeCurrent_mA[stringNumber] =
                allowedCurrent.continuousChargeCurrent_mA;
            sof_tableSofValues.recommendedContinuousDischargeCurrent_mA[stringNumber] =
                allowedCurrent.continuousDischargeCurrent_mA;
            sof_tableSofValues.recommendedPeakChargeCurrent_mA[stringNumber] = allowedCurrent.peakChargeCurrent_mA;
            sof_tableSofValues.recommendedPeakDischargeCurrent_mA[stringNumber] =
                allowedCurrent.peakDischargeCurrent_mA;
 
            nrClosedStrings++;
            if (minCharge_mA > sof_tableSofValues.recommendedContinuousChargeCurrent_mA[stringNumber]) {
                minCharge_mA = sof_tableSofValues.recommendedContinuousChargeCurrent_mA[stringNumber];
            }
            if (minDischarge_mA > sof_tableSofValues.recommendedContinuousDischargeCurrent_mA[stringNumber]) {
                minDischarge_mA = sof_tableSofValues.recommendedContinuousDischargeCurrent_mA[stringNumber];
            }
        } else {
            sof_tableSofValues.recommendedContinuousChargeCurrent_mA[stringNumber]    = 0.0f;
            sof_tableSofValues.recommendedContinuousDischargeCurrent_mA[stringNumber] = 0.0f;
            sof_tableSofValues.recommendedPeakChargeCurrent_mA[stringNumber]          = 0.0f;
            sof_tableSofValues.recommendedPeakDischargeCurrent_mA[stringNumber]       = 0.0f;
        }
 
#if BMS_CHECK_SOF_CURRENT_LIMITS == true
        /* Calculate maximum allowed current MOL level */
        SOF_CalculateVoltageBasedCurrentLimit(
            (float)sof_tableMinimumMaximumValues.minimumCellVoltage_mV[stringNumber],
            (float)sof_tableMinimumMaximumValues.maximumCellVoltage_mV[stringNumber],
            &voltageBasedSof,
            &sof_maximumOperatingLimit,
            &sof_curveMol);
        SOF_CalculateTemperatureBasedCurrentLimit(
            (float)sof_tableMinimumMaximumValues.minimumTemperature_ddegC[stringNumber],
            (float)sof_tableMinimumMaximumValues.maximumTemperature_ddegC[stringNumber],
            &temperatureBasedSof,
            &sof_maximumOperatingLimit,
            &sof_curveMol);
        allowedCurrent = SOF_MinimumOfTwoSofValues(voltageBasedSof, temperatureBasedSof);
        sof_tableSofValues.continuousMolChargeCurrent_mA[stringNumber] = allowedCurrent.continuousChargeCurrent_mA;
        sof_tableSofValues.continuousMolDischargeCurrent_mA[stringNumber] =
            allowedCurrent.continuousDischargeCurrent_mA;
        sof_tableSofValues.peakMolChargeCurrent_mA[stringNumber]    = allowedCurrent.peakChargeCurrent_mA;
        sof_tableSofValues.peakMolDischargeCurrent_mA[stringNumber] = allowedCurrent.peakDischargeCurrent_mA;
 
        /* Calculate maximum allowed current RSL level */
        SOF_CalculateVoltageBasedCurrentLimit(
            (float)sof_tableMinimumMaximumValues.minimumCellVoltage_mV[stringNumber],
            (float)sof_tableMinimumMaximumValues.maximumCellVoltage_mV[stringNumber],
            &voltageBasedSof,
            &sof_recommendedSafetyLimit,
            &sof_curveRsl);
        SOF_CalculateTemperatureBasedCurrentLimit(
            (float)sof_tableMinimumMaximumValues.minimumTemperature_ddegC[stringNumber],
            (float)sof_tableMinimumMaximumValues.maximumTemperature_ddegC[stringNumber],
            &temperatureBasedSof,
            &sof_recommendedSafetyLimit,
            &sof_curveRsl);
        allowedCurrent = SOF_MinimumOfTwoSofValues(voltageBasedSof, temperatureBasedSof);
        sof_tableSofValues.continuousRslChargeCurrent_mA[stringNumber] = allowedCurrent.continuousChargeCurrent_mA;
        sof_tableSofValues.continuousRslDischargeCurrent_mA[stringNumber] =
            allowedCurrent.continuousDischargeCurrent_mA;
        sof_tableSofValues.peakRslChargeCurrent_mA[stringNumber]    = allowedCurrent.peakChargeCurrent_mA;
        sof_tableSofValues.peakRslDischargeCurrent_mA[stringNumber] = allowedCurrent.peakDischargeCurrent_mA;
 
        /* Calculate maximum allowed current MSL level */
        SOF_CalculateVoltageBasedCurrentLimit(
            (float)sof_tableMinimumMaximumValues.minimumCellVoltage_mV[stringNumber],
            (float)sof_tableMinimumMaximumValues.maximumCellVoltage_mV[stringNumber],
            &voltageBasedSof,
            &sof_configMaximumSafetyLimit,
            &sof_curveMsl);
        SOF_CalculateTemperatureBasedCurrentLimit(
            (float)sof_tableMinimumMaximumValues.minimumTemperature_ddegC[stringNumber],
            (float)sof_tableMinimumMaximumValues.maximumTemperature_ddegC[stringNumber],
            &temperatureBasedSof,
            &sof_configMaximumSafetyLimit,
            &sof_curveMsl);
        allowedCurrent = SOF_MinimumOfTwoSofValues(voltageBasedSof, temperatureBasedSof);
        sof_tableSofValues.continuousMslChargeCurrent_mA[stringNumber] = allowedCurrent.continuousChargeCurrent_mA;
        sof_tableSofValues.continuousMslDischargeCurrent_mA[stringNumber] =
            allowedCurrent.continuousDischargeCurrent_mA;
        sof_tableSofValues.peakMslChargeCurrent_mA[stringNumber]    = allowedCurrent.peakChargeCurrent_mA;
        sof_tableSofValues.peakMslDischargeCurrent_mA[stringNumber] = allowedCurrent.peakDischargeCurrent_mA;
#else  /* BMS_CHECK_SOF_CURRENT_LIMITS == false */
        sof_tableSofValues.continuousMolChargeCurrent_mA[stringNumber]    = BC_CURRENT_MAX_CHARGE_MOL_mA;
        sof_tableSofValues.continuousMolDischargeCurrent_mA[stringNumber] = BC_CURRENT_MAX_DISCHARGE_MOL_mA;
        sof_tableSofValues.peakMolChargeCurrent_mA[stringNumber]          = BC_CURRENT_MAX_CHARGE_MOL_mA;
        sof_tableSofValues.peakMolDischargeCurrent_mA[stringNumber]       = BC_CURRENT_MAX_DISCHARGE_MOL_mA;
 
        sof_tableSofValues.continuousRslChargeCurrent_mA[stringNumber]    = BC_CURRENT_MAX_CHARGE_RSL_mA;
        sof_tableSofValues.continuousRslDischargeCurrent_mA[stringNumber] = BC_CURRENT_MAX_DISCHARGE_RSL_mA;
        sof_tableSofValues.peakRslChargeCurrent_mA[stringNumber]          = BC_CURRENT_MAX_CHARGE_RSL_mA;
        sof_tableSofValues.peakRslDischargeCurrent_mA[stringNumber]       = BC_CURRENT_MAX_DISCHARGE_RSL_mA;
 
        sof_tableSofValues.continuousMslChargeCurrent_mA[stringNumber]    = BC_CURRENT_MAX_CHARGE_MSL_mA;
        sof_tableSofValues.continuousMslDischargeCurrent_mA[stringNumber] = BC_CURRENT_MAX_DISCHARGE_MSL_mA;
        sof_tableSofValues.peakMslChargeCurrent_mA[stringNumber]          = BC_CURRENT_MAX_CHARGE_MSL_mA;
        sof_tableSofValues.peakMslDischargeCurrent_mA[stringNumber]       = BC_CURRENT_MAX_DISCHARGE_MSL_mA;
#endif /* BMS_CHECK_SOF_CURRENT_LIMITS == true */
    }
 
    if (minCharge_mA > (float)BS_MAXIMUM_STRING_CURRENT_mA) {
        minCharge_mA = (float)BS_MAXIMUM_STRING_CURRENT_mA;
    }
    if (minDischarge_mA > (float)BS_MAXIMUM_STRING_CURRENT_mA) {
        minDischarge_mA = (float)BS_MAXIMUM_STRING_CURRENT_mA;
    }
 
    /* Compute recommended pack values */
    sof_tableSofValues.recommendedContinuousPackChargeCurrent_mA    = (float)nrClosedStrings * minCharge_mA;
    sof_tableSofValues.recommendedContinuousPackDischargeCurrent_mA = (float)nrClosedStrings * minDischarge_mA;
    sof_tableSofValues.recommendedPeakPackChargeCurrent_mA          = (float)nrClosedStrings * minCharge_mA;
    sof_tableSofValues.recommendedPeakPackDischargeCurrent_mA       = (float)nrClosedStrings * minDischarge_mA;
 
    DATA_WRITE_DATA(&sof_tableSofValues);
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/
#ifdef UNITY_UNIT_TEST
extern void TEST_SOF_CalculateCurves(const SOF_CONFIG_s *pConfigurationValues, SOF_CURVE_s *pCalculatedSofCurveValues) {
    SOF_CalculateCurves(pConfigurationValues, pCalculatedSofCurveValues);
}
extern void TEST_SOF_CalculateVoltageBasedCurrentLimit(
    int16_t minimumCellVoltage_mV,
    int16_t maximumCellVoltage_mV,
    SOF_CURRENT_LIMITS_s *pAllowedVoltageBasedCurrent,
    const SOF_CONFIG_s *pConfigLimitValues,
    SOF_CURVE_s *pCalculatedSofCurves) {
    SOF_CalculateVoltageBasedCurrentLimit(
        minimumCellVoltage_mV,
        maximumCellVoltage_mV,
        pAllowedVoltageBasedCurrent,
        pConfigLimitValues,
        pCalculatedSofCurves);
}
extern void TEST_SOF_CalculateTemperatureBasedCurrentLimit(
    int16_t minimumCellTemperature_ddegC,
    int16_t maximumCellTemperature_ddegC,
    SOF_CURRENT_LIMITS_s *pAllowedTemperatureBasedCurrent,
    const SOF_CONFIG_s *pConfigLimitValues,
    SOF_CURVE_s *pCalculatedSofCurves) {
    SOF_CalculateTemperatureBasedCurrentLimit(
        minimumCellTemperature_ddegC,
        maximumCellTemperature_ddegC,
        pAllowedTemperatureBasedCurrent,
        pConfigLimitValues,
        pCalculatedSofCurves);
}
extern SOF_CURRENT_LIMITS_s TEST_SOF_MinimumOfTwoSofValues(
    SOF_CURRENT_LIMITS_s voltageBasedLimits,
    SOF_CURRENT_LIMITS_s temperatureBasedLimits) {
    return SOF_MinimumOfTwoSofValues(voltageBasedLimits, temperatureBasedLimits);
}
#endif