can_cbs_tx_minmax.c

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/**
 * @file    can_cbs_tx_minmax.c
 * @author  foxBMS Team
 * @date    2021-04-20 (date of creation)
 * @updated 2021-07-21 (date of last update)
 * @ingroup DRIVER
 * @prefix  CAN
 *
 * @brief   CAN driver Tx callback implementation
 * @details CAN Tx callback for min/max values
 */
 
/*========== Includes =======================================================*/
#include "bms.h"
#include "can_cbs.h"
#include "can_helper.h"
 
/*========== Macros and Definitions =========================================*/
 
/*========== Static Constant and Variable Definitions =======================*/
 
/*========== Extern Constant and Variable Definitions =======================*/
 
/*========== Static Function Prototypes =====================================*/
 
/*========== Static Function Implementations ================================*/
 
/*========== Extern Function Implementations ================================*/
extern uint32_t CAN_TxMinimumMaximumValues(
    uint32_t id,
    uint8_t dlc,
    CAN_ENDIANNESS_e endianness,
    uint8_t *pCanData,
    uint8_t *pMuxId,
    const CAN_SHIM_s *const kpkCanShim) {
    /* pMuxId is not used here, therefore has to be NULL_PTR */
    FAS_ASSERT(pMuxId == NULL_PTR);
 
    FAS_ASSERT(id < CAN_MAX_11BIT_ID); /* Currently standard ID, 11 bit */
    FAS_ASSERT(dlc <= CAN_MAX_DLC);    /* Currently max 8 bytes in a CAN frame */
    FAS_ASSERT(pCanData != NULL_PTR);
    FAS_ASSERT(kpkCanShim != NULL_PTR);
    uint64_t message = 0;
 
    DATA_READ_DATA(kpkCanShim->pTableMinMax);
 
    int16_t packMaximumVoltage_mV        = INT16_MIN;
    int16_t packMinimumVoltage_mV        = INT16_MAX;
    int16_t packMaximumTemperature_ddegC = INT16_MIN;
    int16_t packMinimumTemperature_ddegC = INT16_MAX;
 
    if (0u == BMS_GetNumberOfConnectedStrings()) {
        /* Calculate min/max values of complete pack if all slice switches are open */
        for (uint8_t stringNumber = 0u; stringNumber < BS_NR_OF_STRINGS; stringNumber++) {
            if (kpkCanShim->pTableMinMax->maximumCellVoltage_mV[stringNumber] >= packMaximumVoltage_mV) {
                packMaximumVoltage_mV = kpkCanShim->pTableMinMax->maximumCellVoltage_mV[stringNumber];
            }
            if (kpkCanShim->pTableMinMax->minimumCellVoltage_mV[stringNumber] <= packMinimumVoltage_mV) {
                packMinimumVoltage_mV = kpkCanShim->pTableMinMax->minimumCellVoltage_mV[stringNumber];
            }
            if (kpkCanShim->pTableMinMax->maximumTemperature_ddegC[stringNumber] >= packMaximumTemperature_ddegC) {
                packMaximumTemperature_ddegC = kpkCanShim->pTableMinMax->maximumTemperature_ddegC[stringNumber];
            }
            if (kpkCanShim->pTableMinMax->minimumTemperature_ddegC[stringNumber] <= packMinimumTemperature_ddegC) {
                packMinimumTemperature_ddegC = kpkCanShim->pTableMinMax->minimumTemperature_ddegC[stringNumber];
            }
        }
    } else {
        /* Calculate min/max values of connected slices */
        for (uint8_t stringNumber = 0u; stringNumber < BS_NR_OF_STRINGS; stringNumber++) {
            if (true == BMS_IsStringClosed(stringNumber)) {
                if (kpkCanShim->pTableMinMax->maximumCellVoltage_mV[stringNumber] >= packMaximumVoltage_mV) {
                    packMaximumVoltage_mV = kpkCanShim->pTableMinMax->maximumCellVoltage_mV[stringNumber];
                }
                if (kpkCanShim->pTableMinMax->minimumCellVoltage_mV[stringNumber] <= packMinimumVoltage_mV) {
                    packMinimumVoltage_mV = kpkCanShim->pTableMinMax->minimumCellVoltage_mV[stringNumber];
                }
                if (kpkCanShim->pTableMinMax->maximumTemperature_ddegC[stringNumber] >= packMaximumTemperature_ddegC) {
                    packMaximumTemperature_ddegC = kpkCanShim->pTableMinMax->maximumTemperature_ddegC[stringNumber];
                }
                if (kpkCanShim->pTableMinMax->minimumTemperature_ddegC[stringNumber] <= packMinimumTemperature_ddegC) {
                    packMinimumTemperature_ddegC = kpkCanShim->pTableMinMax->minimumTemperature_ddegC[stringNumber];
                }
            }
        }
    }
 
    /* AXIVION Disable Style Generic-NoMagicNumbers: Signal data defined in .dbc file. */
    /* Minimum cell voltage */
    float signalData = (float)packMinimumVoltage_mV;
    float offset     = 0.0f;
    float factor     = 1.0f;
    signalData       = (signalData + offset) * factor;
    uint64_t data    = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 10u, 13u, data, endianness);
 
    /* Maximum cell voltage */
    signalData = (float)packMaximumVoltage_mV;
    offset     = 0.0f;
    factor     = 1.0f;
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 7u, 13u, data, endianness);
 
    /* Minimum cell temperature */
    signalData = (float)packMinimumTemperature_ddegC;
    offset     = 0.0f;
    factor     = 0.1f; /* convert ddegC to degC */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 63u, 8u, data, endianness);
 
    /* Maximum cell temperature */
    signalData = (float)packMaximumTemperature_ddegC;
    offset     = 0.0f;
    factor     = 0.1f; /* convert ddegC to degC */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 55u, 8u, data, endianness);
    /* AXIVION Enable Style Generic-NoMagicNumbers: */
 
    /* now copy data in the buffer that will be used to send data */
    CAN_TxSetCanDataWithMessageData(message, pCanData, endianness);
 
    return 0;
}
 
extern uint32_t CAN_TxStringMinimumMaximumValues(
    uint32_t id,
    uint8_t dlc,
    CAN_ENDIANNESS_e endianness,
    uint8_t *pCanData,
    uint8_t *pMuxId,
    const CAN_SHIM_s *const kpkCanShim) {
    FAS_ASSERT(id < CAN_MAX_11BIT_ID); /* Currently standard ID, 11 bit */
    FAS_ASSERT(dlc <= CAN_MAX_DLC);    /* Currently max 8 bytes in a CAN frame */
    FAS_ASSERT(pCanData != NULL_PTR);
    FAS_ASSERT(pMuxId != NULL_PTR);
    FAS_ASSERT(*pMuxId < BS_NR_OF_STRINGS);
    FAS_ASSERT(kpkCanShim != NULL_PTR);
    uint64_t message = 0u;
 
    /** Database entry with minimum and maximum values does not need to be read
     *  within this callback as it is already read by function
     *  #CAN_TxMinimumMaximumValues */
    const uint8_t stringNumber = *pMuxId;
 
    /* AXIVION Disable Style Generic-NoMagicNumbers: Signal data defined in .dbc file. */
    /* Minimum cell voltage */
    float signalData = (float)kpkCanShim->pTableMinMax->minimumCellVoltage_mV[stringNumber];
    float offset     = 0.0f;
    float factor     = 1.0f;
    signalData       = (signalData + offset) * factor;
    uint64_t data    = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 18u, 13u, data, endianness);
 
    /* Maximum cell voltage */
    signalData = (float)kpkCanShim->pTableMinMax->maximumCellVoltage_mV[stringNumber];
    offset     = 0.0f;
    factor     = 1.0f;
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 15u, 13u, data, endianness);
 
    /* Minimum cell temperature */
    signalData = (float)kpkCanShim->pTableMinMax->minimumTemperature_ddegC[stringNumber];
    offset     = 0.0f;
    factor     = 0.2f; /* convert ddegC to 0.5degC */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 44u, 9u, data, endianness);
 
    /* Maximum cell temperature */
    signalData = (float)kpkCanShim->pTableMinMax->maximumTemperature_ddegC[stringNumber];
    offset     = 0.0f;
    factor     = 0.2f; /* convert ddegC to 0.5degC */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 37, 9u, data, endianness);
    /* AXIVION Enable Style Generic-NoMagicNumbers: */
 
    /* now copy data in the buffer that will be use to send data */
    CAN_TxSetCanDataWithMessageData(message, pCanData, endianness);
 
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
 
    /* Check mux value */
    if (*pMuxId >= BS_NR_OF_STRINGS) {
        *pMuxId = 0u;
    }
 
    return 0;
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/
#ifdef UNITY_UNIT_TEST
 
#endif