plausibility.c

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/**
 *
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/**
 * @file    plausibility.c
 * @author  foxBMS Team
 * @date    2020-02-24 (date of creation)
 * @updated 2020-02-24 (date of last update)
 * @ingroup APPLICATION
 * @prefix  PL
 *
 * @brief   plausibility checks for cell voltage and cell temperatures
 *
 */
 
/*========== Includes =======================================================*/
#include "plausibility.h"
 
#include "battery_system_cfg.h"
 
#include "diag.h"
#include "foxmath.h"
 
/*========== Macros and Definitions =========================================*/
 
/*========== Static Constant and Variable Definitions =======================*/
 
/*========== Extern Constant and Variable Definitions =======================*/
 
/*========== Static Function Prototypes =====================================*/
 
/*========== Static Function Implementations ================================*/
 
/*========== Extern Function Implementations ================================*/
extern STD_RETURN_TYPE_e PL_CheckStringVoltage(int32_t voltageMic_mV, int32_t voltageCurrentSensor_mV) {
    STD_RETURN_TYPE_e result = STD_NOT_OK;
 
    /* Get deviation between these two measurements */
    int32_t diff_mV = voltageMic_mV - voltageCurrentSensor_mV;
 
    if (abs(diff_mV) < PL_STRING_VOLTAGE_TOLERANCE_mV) {
        result = STD_OK;
    }
    return result;
}
 
extern STD_RETURN_TYPE_e PL_CheckCellvoltage(
    int16_t baseCellVoltage,
    int16_t redundancy0CellVoltage,
    int16_t *pCellVoltage) {
    STD_RETURN_TYPE_e retval = STD_OK;
 
    /* Pointer validity check */
    FAS_ASSERT(pCellVoltage != NULL_PTR);
 
    if (abs(baseCellVoltage - redundancy0CellVoltage) > PL_CELL_VOLTAGE_TOLERANCE_mV) {
        retval = STD_NOT_OK;
    }
    /* Take the average value of base and redundant measurement value */
    *pCellVoltage = (baseCellVoltage + redundancy0CellVoltage) / 2;
    return retval;
}
 
extern STD_RETURN_TYPE_e PL_CheckCelltemperature(
    int16_t baseCelltemperature,
    int16_t redundancy0Celltemperature,
    int16_t *pCelltemperature) {
    /* Pointer validity check */
    FAS_ASSERT(pCelltemperature != NULL_PTR);
 
    STD_RETURN_TYPE_e retval = STD_OK;
 
    if (abs(baseCelltemperature - redundancy0Celltemperature) > PL_CELL_TEMPERATURE_TOLERANCE_dK) {
        retval = STD_NOT_OK;
    }
    /* Take the average value of base and redundant measurement value */
    *pCelltemperature = (baseCelltemperature + redundancy0Celltemperature) / 2;
    return retval;
}
 
extern STD_RETURN_TYPE_e PL_CheckVoltageSpread(
    DATA_BLOCK_CELL_VOLTAGE_s *pCellvoltages,
    DATA_BLOCK_MIN_MAX_s *pMinMaxAverageValues) {
    /* Pointer validity check */
    FAS_ASSERT(pCellvoltages != NULL_PTR);
    FAS_ASSERT(pMinMaxAverageValues != NULL_PTR);
 
    STD_RETURN_TYPE_e retval = STD_OK;
 
    /* Iterate over all cells */
    for (uint8_t s = 0u; s < BS_NR_OF_STRINGS; s++) {
        STD_RETURN_TYPE_e plausibilityIssueDetected = STD_OK;
        for (uint8_t m = 0u; m < BS_NR_OF_MODULES; m++) {
            for (uint8_t c = 0u; c < BS_NR_OF_CELLS_PER_MODULE; c++) {
                /* Only do check for valid voltages */
                if ((pCellvoltages->invalidCellVoltage[s][m] & (0x01u << c)) == 0) {
                    if (abs(pCellvoltages->cellVoltage_mV[s][(m * BS_NR_OF_CELLS_PER_MODULE) + c] -
                            pMinMaxAverageValues->averageCellVoltage_mV[s]) > PL_CELL_VOLTAGE_SPREAD_TOLERANCE_mV) {
                        /* Voltage difference too large */
                        plausibilityIssueDetected = STD_NOT_OK;
                        retval                    = STD_NOT_OK;
                        /* Set this cell voltage invalid */
                        pCellvoltages->invalidCellVoltage[s][m] |= (0x01u << c);
                    }
                }
            }
        }
        DIAG_CheckEvent(plausibilityIssueDetected, DIAG_ID_PLAUSIBILITY_CELL_VOLTAGE_SPREAD, DIAG_STRING, s);
    }
    return retval;
}
 
extern STD_RETURN_TYPE_e PL_CheckTemperatureSpread(
    DATA_BLOCK_CELL_TEMPERATURE_s *pCellTemperatures,
    DATA_BLOCK_MIN_MAX_s *pMinMaxAverageValues) {
    /* Pointer validity check */
    FAS_ASSERT(pCellTemperatures != NULL_PTR);
    FAS_ASSERT(pMinMaxAverageValues != NULL_PTR);
 
    STD_RETURN_TYPE_e retval = STD_OK;
 
    /* Iterate over all cells */
    for (uint8_t s = 0u; s < BS_NR_OF_STRINGS; s++) {
        STD_RETURN_TYPE_e plausibilityIssueDetected = STD_OK;
        for (uint8_t m = 0u; m < BS_NR_OF_MODULES; m++) {
            for (uint8_t c = 0u; c < BS_NR_OF_TEMP_SENSORS_PER_MODULE; c++) {
                /* Only do check for valid temperatures */
                if ((pCellTemperatures->invalidCellTemperature[s][m] & (0x01u << c)) == 0) {
                    if (abs(pCellTemperatures->cellTemperature_ddegC[s][(m * BS_NR_OF_TEMP_SENSORS_PER_MODULE) + c] -
                            (int16_t)pMinMaxAverageValues->averageTemperature_ddegC[s]) >
                        PL_CELL_TEMPERATURE_SPREAD_TOLERANCE_dK) {
                        /* temperature difference too large */
                        plausibilityIssueDetected = STD_NOT_OK;
                        retval                    = STD_NOT_OK;
                        /* Set this cell temperature invalid */
                        pCellTemperatures->invalidCellTemperature[s][m] |= (0x01u << c);
                    } else {
                        pCellTemperatures->nrValidTemperatures[s]++;
                    }
                }
            }
        }
        DIAG_CheckEvent(plausibilityIssueDetected, DIAG_ID_PLAUSIBILITY_CELL_TEMPERATURE_SPREAD, DIAG_STRING, s);
    }
    return retval;
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/