can_cbs_tx_limits.c

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/**
 * @file    can_cbs_tx_limits.c
 * @author  foxBMS Team
 * @date    2021-07-21 (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 state messages
 */
 
/*========== Includes =======================================================*/
#include "battery_cell_cfg.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_TxLimitValues(
    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->pTableSof);
 
    /* AXIVION Disable Style Generic-NoMagicNumbers: Signal data defined in .dbc file. */
    /* maximum charge current */
    float signalData = (float)kpkCanShim->pTableSof->recommendedContinuousPackChargeCurrent_mA;
    float offset     = 0.0f;
    float factor     = 0.004f; /* convert mA to 250mA */
    signalData       = (signalData + offset) * factor;
    uint64_t data    = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 11u, 12u, data, endianness);
 
    /* maximum discharge current */
    signalData = (float)kpkCanShim->pTableSof->recommendedContinuousPackDischargeCurrent_mA;
    offset     = 0.0f;
    factor     = 0.004f; /* convert mA to 250mA */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 7u, 12u, data, endianness);
 
    /* TODO: maximum charge power */
    /* TODO: maximum discharge power */
 
    /* minimum pack voltage */
    signalData = (float)(BS_NR_OF_BAT_CELLS * BC_VOLTAGE_MIN_MSL_mV);
    offset     = 0.0f;
    factor     = 0.00025f; /* convert mV to 4V */
    signalData = (signalData + offset) * factor;
    data       = (int64_t)signalData;
    /* set data in CAN frame */
    CAN_TxSetMessageDataWithSignalData(&message, 63u, 8u, data, endianness);
 
    /* maximum pack voltage */
    signalData = (float)(BS_NR_OF_BAT_CELLS * BC_VOLTAGE_MAX_MSL_mV);
    offset     = 0.0f;
    factor     = 0.00025f; /* convert mV to 4V */
    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;
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/
#ifdef UNITY_UNIT_TEST
 
#endif