can_cbs_tx_temperature.c

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/**
 * @file    can_cbs_tx_temperature.c
 * @author  foxBMS Team
 * @date    2021-04-20 (date of creation)
 * @updated 2021-06-09 (date of last update)
 * @ingroup DRIVER
 * @prefix  CAN
 *
 * @brief   CAN driver Tx callback implementation
 * @details CAN Tx callback for cell temperatures
 */
 
/*========== Includes =======================================================*/
#include "can_cbs.h"
#include "can_helper.h"
#include "foxmath.h"
 
/*========== Macros and Definitions =========================================*/
 
/*========== Static Constant and Variable Definitions =======================*/
 
/**
 * CAN signals used in this message
 * Parameters:
 * bit start, bit length, factor, offset, minimum value, maximum value
 */
static const CAN_SIGNAL_TYPE_s cellTemperatureMultiplexer  = {7u, 8u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell0TemperatureInvalidFlag = {8u, 1u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell1TemperatureInvalidFlag = {9u, 1u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell2TemperatureInvalidFlag = {10u, 1u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell3TemperatureInvalidFlag = {11u, 1u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell4TemperatureInvalidFlag = {12u, 1u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell5TemperatureInvalidFlag = {13u, 1u, 1.0f, 0.0f, 0.0f, 1.0f};
static const CAN_SIGNAL_TYPE_s cell0Temperature_degC       = {23u, 8u, 1.0f, 0.0f, -128.0f, 127.0f};
static const CAN_SIGNAL_TYPE_s cell1Temperature_degC       = {31u, 8u, 1.0f, 0.0f, -128.0f, 127.0f};
static const CAN_SIGNAL_TYPE_s cell2Temperature_degC       = {39u, 8u, 1.0f, 0.0f, -128.0f, 127.0f};
static const CAN_SIGNAL_TYPE_s cell3Temperature_degC       = {47u, 8u, 1.0f, 0.0f, -128.0f, 127.0f};
static const CAN_SIGNAL_TYPE_s cell4Temperature_degC       = {55u, 8u, 1.0f, 0.0f, -128.0f, 127.0f};
static const CAN_SIGNAL_TYPE_s cell5Temperature_degC       = {63u, 8u, 1.0f, 0.0f, -128.0f, 127.0f};
 
/*========== Extern Constant and Variable Definitions =======================*/
 
/*========== Static Function Prototypes =====================================*/
 
/**
 * @brief Helper function for CAN_TxCellTemperature()
 *
 * Used in the CAN_TxCellTemperature() callback to set
 * invalid flag data and temperature data
 * in the CAN frame.
 *
 * @param[in] muxId                              multiplexer value
 * @param[in] pMessage                           pointer to CAN frame data
 * @param[in] cellTemperatureSignal              signal characteristics for temperature data
 * @param[in] cellTemperatureInvalidFlagSignal   signal characteristics for invalid flag data
 * @param[in] endianness                         big or little endianness of data
 * @param[in] kpkCanShim                         shim to the database entries
 */
static void CAN_TxTemperatureSetData(
    uint8_t muxId,
    uint64_t *pMessage,
    CAN_SIGNAL_TYPE_s cellTemperatureSignal,
    CAN_SIGNAL_TYPE_s cellTemperatureInvalidFlagSignal,
    CAN_ENDIANNESS_e endianness,
    const CAN_SHIM_s *const kpkCanShim);
 
/*========== Static Function Implementations ================================*/
 
static void CAN_TxTemperatureSetData(
    uint8_t muxId,
    uint64_t *pMessage,
    CAN_SIGNAL_TYPE_s cellTemperatureSignal,
    CAN_SIGNAL_TYPE_s cellTemperatureInvalidFlagSignal,
    CAN_ENDIANNESS_e endianness,
    const CAN_SHIM_s *const kpkCanShim) {
    /* sensor index must not be greater than the number of sensors */
    if (muxId < BS_NR_OF_TEMP_SENSORS) {
        /* start_index end_index module
         * 00          17        module1
         * 18          35        module2
         * 20          53        module3
         * 30          71        module4
         */
        /* start_index end_index string
         * 000         071       string0
         * 072         143       string1
         */
 
        /* Get string, module and cell number */
        const uint8_t stringNumber = DATA_GetStringNumberFromTemperatureIndex(muxId);
        const uint8_t moduleNumber = DATA_GetModuleNumberFromTemperatureIndex(muxId);
        const uint8_t sensorNumber = DATA_GetSensorNumberFromTemperatureIndex(muxId);
 
        uint32_t signalData_valid;
        /* Valid bits data */
        if ((kpkCanShim->pTableCellTemperature->invalidCellTemperature[stringNumber][moduleNumber] &
             (1u << sensorNumber)) == 0u) {
            signalData_valid = 0u;
        } else {
            signalData_valid = 1u;
        }
        /* Set valid bit data in CAN frame */
        CAN_TxSetMessageDataWithSignalData(
            pMessage,
            cellTemperatureInvalidFlagSignal.bitStart,
            cellTemperatureInvalidFlagSignal.bitLength,
            signalData_valid,
            endianness);
 
        /* Temperature data */
        float signalData_degC =
            (float)kpkCanShim->pTableCellTemperature
                ->cellTemperature_ddegC[stringNumber][(moduleNumber * BS_NR_OF_TEMP_SENSORS_PER_MODULE) + sensorNumber];
        signalData_degC /= UNIT_CONVERSION_FACTOR_10_FLOAT; /* Convert temperature from decidegC to degC */
        /* Apply offset and factor, check min/max limits */
        CAN_TxPrepareSignalData(&signalData_degC, cellTemperatureSignal);
        /* Set temperature data in CAN frame */
        CAN_TxSetMessageDataWithSignalData(
            pMessage,
            cellTemperatureSignal.bitStart,
            cellTemperatureSignal.bitLength,
            (int32_t)signalData_degC,
            endianness);
    }
}
 
/*========== Extern Function Implementations ================================*/
extern uint32_t CAN_TxCellTemperature(
    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(kpkCanShim != NULL_PTR);
    uint64_t message = 0;
 
    /* Reset mux if maximum was reached */
    if (*pMuxId >= BS_NR_OF_TEMP_SENSORS) {
        *pMuxId = 0u;
    }
 
    /* first signal to transmit cell voltages: get database values */
    if (*pMuxId == 0u) {
        DATA_READ_DATA(kpkCanShim->pTableCellTemperature);
    }
 
    /* Set mux signal in CAN frame */
    uint32_t signalData = *pMuxId / 6u; /* 6 temperatures per module */
    CAN_TxSetMessageDataWithSignalData(
        &message, cellTemperatureMultiplexer.bitStart, cellTemperatureMultiplexer.bitLength, signalData, endianness);
 
    /* Set other signals in CAN frame */
    /* Each temperature frame contains 6 temperatures, with a correspond invalid flag*/
    CAN_TxTemperatureSetData(
        *pMuxId, &message, cell0Temperature_degC, cell0TemperatureInvalidFlag, endianness, kpkCanShim);
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
    CAN_TxTemperatureSetData(
        *pMuxId, &message, cell1Temperature_degC, cell1TemperatureInvalidFlag, endianness, kpkCanShim);
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
    CAN_TxTemperatureSetData(
        *pMuxId, &message, cell2Temperature_degC, cell2TemperatureInvalidFlag, endianness, kpkCanShim);
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
    CAN_TxTemperatureSetData(
        *pMuxId, &message, cell3Temperature_degC, cell3TemperatureInvalidFlag, endianness, kpkCanShim);
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
    CAN_TxTemperatureSetData(
        *pMuxId, &message, cell4Temperature_degC, cell4TemperatureInvalidFlag, endianness, kpkCanShim);
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
    CAN_TxTemperatureSetData(
        *pMuxId, &message, cell5Temperature_degC, cell5TemperatureInvalidFlag, endianness, kpkCanShim);
    /* Increment multiplexer for next cell */
    (*pMuxId)++;
 
    /* All signal data copied in CAN frame, now copy data in the buffer that will be use to send the frame */
    CAN_TxSetCanDataWithMessageData(message, pCanData, endianness);
 
    return 0;
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/
#ifdef UNITY_UNIT_TEST
 
#endif