can_cbs_tx_pack-state-estimation.c

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/**
 * @file    can_cbs_tx_pack-state-estimation.c
 * @author  foxBMS Team
 * @date    2021-07-21 (date of creation)
 * @updated 2023-10-12 (date of last update)
 * @version v1.6.0
 * @ingroup DRIVER
 * @prefix  CANTX
 *
 * @brief   CAN driver Tx callback implementation
 * @details CAN Tx callback for state estimation messages
 */
 
/*========== Includes =======================================================*/
#include "bms.h"
#include "can_cbs_tx.h"
#include "can_cfg_tx-message-definitions.h"
#include "can_helper.h"
#include "foxmath.h"
 
#include <math.h>
#include <stdint.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 CANTX_PackStateEstimation(
    CAN_MESSAGE_PROPERTIES_s message,
    uint8_t *pCanData,
    uint8_t *pMuxId,
    const CAN_SHIM_s *const kpkCanShim) {
    FAS_ASSERT(message.id == CANTX_PACK_STATE_ESTIMATION_ID);
    FAS_ASSERT(message.idType == CANTX_PACK_STATE_ESTIMATION_ID_TYPE);
    FAS_ASSERT(message.dlc <= CAN_MAX_DLC);
    FAS_ASSERT(pCanData != NULL_PTR);
    FAS_ASSERT(pMuxId == NULL_PTR); /* pMuxId is not used here, therefore has to be NULL_PTR */
    FAS_ASSERT(kpkCanShim != NULL_PTR);
    uint64_t messageData = 0u;
 
    float_t minimumStringSoc_perc   = FLT_MAX;
    float_t maximumStringSoc_perc   = FLT_MIN;
    float_t minimumStringSoe_perc   = FLT_MAX;
    float_t maximumStringSoe_perc   = FLT_MIN;
    uint32_t minimumStringEnergy_Wh = UINT32_MAX;
 
    DATA_READ_DATA(kpkCanShim->pTableSoc, kpkCanShim->pTableSoe);
 
    /* Check current direction  */
    if (BMS_GetBatterySystemState() == BMS_CHARGING) {
        /* If battery system is charging use maximum values */
        for (uint8_t s = 0u; s < BS_NR_OF_STRINGS; s++) {
            if (BMS_IsStringClosed(s) == true) {
                if (maximumStringSoc_perc < kpkCanShim->pTableSoc->maximumSoc_perc[s]) {
                    maximumStringSoc_perc = kpkCanShim->pTableSoc->maximumSoc_perc[s];
                }
                if (maximumStringSoe_perc < kpkCanShim->pTableSoe->maximumSoe_perc[s]) {
                    maximumStringSoe_perc = kpkCanShim->pTableSoe->maximumSoe_perc[s];
                }
                if (minimumStringEnergy_Wh > kpkCanShim->pTableSoe->minimumSoe_Wh[s]) {
                    minimumStringEnergy_Wh = kpkCanShim->pTableSoe->minimumSoe_Wh[s];
                }
            }
        }
    } else {
        /* If battery system is discharging or at rest use minimum values */
        for (uint8_t s = 0u; s < BS_NR_OF_STRINGS; s++) {
            if (BMS_IsStringClosed(s) == true) {
                if (minimumStringSoc_perc > kpkCanShim->pTableSoc->minimumSoc_perc[s]) {
                    minimumStringSoc_perc = kpkCanShim->pTableSoc->minimumSoc_perc[s];
                }
                if (minimumStringSoe_perc > kpkCanShim->pTableSoe->minimumSoe_perc[s]) {
                    minimumStringSoe_perc = kpkCanShim->pTableSoe->minimumSoe_perc[s];
                }
                if (minimumStringEnergy_Wh > kpkCanShim->pTableSoe->minimumSoe_Wh[s]) {
                    minimumStringEnergy_Wh = kpkCanShim->pTableSoe->minimumSoe_Wh[s];
                }
            }
        }
    }
 
    float_t packSoc_perc       = 0.0f;
    float_t packSoe_perc       = 0.0f;
    uint32_t packEnergyLeft_Wh = 0u;
 
    /* Calculate pack value */
    if (BMS_GetNumberOfConnectedStrings() != 0u) {
        if (BMS_GetBatterySystemState() == BMS_CHARGING) {
            packSoc_perc = (BMS_GetNumberOfConnectedStrings() * maximumStringSoc_perc) / BS_NR_OF_STRINGS;
            packSoe_perc = (BMS_GetNumberOfConnectedStrings() * maximumStringSoe_perc) / BS_NR_OF_STRINGS;
        } else {
            packSoc_perc = (BMS_GetNumberOfConnectedStrings() * minimumStringSoc_perc) / BS_NR_OF_STRINGS;
            packSoe_perc = (BMS_GetNumberOfConnectedStrings() * minimumStringSoe_perc) / BS_NR_OF_STRINGS;
        }
        packEnergyLeft_Wh = BMS_GetNumberOfConnectedStrings() * minimumStringEnergy_Wh;
    } else {
        packSoc_perc      = 0.0f;
        packSoe_perc      = 0.0f;
        packEnergyLeft_Wh = 0u;
    }
 
    /* SOC */
    float_t signalData = packSoc_perc;
    float_t offset     = 0.0f;
    float_t factor     = 100.0f; /* convert from perc to 0.01perc */
    signalData         = (signalData + offset) * factor;
    uint64_t data      = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&messageData, 7u, 14u, data, message.endianness);
 
    /* SOE */
    signalData = packSoe_perc;
    offset     = 0.0f;
    factor     = 100.0f; /* convert from perc to 0.01perc */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&messageData, 9u, 14u, data, message.endianness);
 
    /* Pack energy */
    signalData = packEnergyLeft_Wh;
    offset     = 0.0f;
    factor     = 0.1f; /* convert from Wh to 10Wh */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&messageData, 47u, 24u, data, message.endianness);
 
    /* SOH */
    signalData = 100.0f; /* TODO */
    offset     = 0.0f;
    factor     = 1.0f / 0.025f; /* convert from perc to 0.025% */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&messageData, 27u, 12u, data, message.endianness);
 
    /* now copy data in the buffer that will be used to send data */
    CAN_TxSetCanDataWithMessageData(messageData, pCanData, message.endianness);
 
    return 0;
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/
#ifdef UNITY_UNIT_TEST
#endif