bal.c

Go to the documentation of this file.

/**
 *
 * @copyright © 2010 - 2021, Fraunhofer-Gesellschaft zur Foerderung der
 *  angewandten Forschung e.V. All rights reserved.
 *
 * BSD 3-Clause License
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1.  Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of the copyright holder nor the names of its
 *     contributors may be used to endorse or promote products derived from
 *     this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * We kindly request you to use one or more of the following phrases to refer
 * to foxBMS in your hardware, software, documentation or advertising
 * materials:
 *
 * ″This product uses parts of foxBMS®″
 *
 * ″This product includes parts of foxBMS®″
 *
 * ″This product is derived from foxBMS®″
 *
 */
 
/**
 * @file    bal.c
 * @author  foxBMS Team
 * @date    2020-02-24 (date of creation)
 * @updated 2020-07-31 (date of last update)
 * @ingroup APPLICATION
 * @prefix  BAL
 *
 * @brief   Driver for the Balancing module
 *
 */
 
/*========== Includes =======================================================*/
#include "bal.h"
 
/*========== Macros and Definitions =========================================*/
 
/*========== Static Constant and Variable Definitions =======================*/
 
/*========== Extern Constant and Variable Definitions =======================*/
 
/*========== Static Function Prototypes =====================================*/
 
/*========== Static Function Implementations ================================*/
 
/*========== Extern Function Implementations ================================*/
#pragma WEAK(BAL_SaveLastStates)
extern void BAL_SaveLastStates(BAL_STATE_s *pBalancingState) {
    if (pBalancingState->lastState != pBalancingState->state) {
        pBalancingState->lastState    = pBalancingState->state;
        pBalancingState->lastSubstate = pBalancingState->substate;
    } else if (pBalancingState->lastSubstate != pBalancingState->substate) {
        pBalancingState->lastSubstate = pBalancingState->substate;
    } else {
        /* Do not set new substate as nothing changed */
        ;
    }
}
 
#pragma WEAK(BAL_CheckReEntrance)
extern uint8_t BAL_CheckReEntrance(BAL_STATE_s *currentState) {
    uint8_t retval = 0;
 
    OS_EnterTaskCritical();
    if (!currentState->triggerEntry) {
        currentState->triggerEntry++;
    } else {
        retval = 0xFF; /* multiple calls of function */
    }
    OS_ExitTaskCritical();
 
    return retval;
}
 
#pragma WEAK(BAL_TransferStateRequest)
extern BAL_STATE_REQUEST_e BAL_TransferStateRequest(BAL_STATE_s *currentState) {
    BAL_STATE_REQUEST_e retval = BAL_STATE_NO_REQUEST;
 
    OS_EnterTaskCritical();
    retval                     = currentState->stateRequest;
    currentState->stateRequest = BAL_STATE_NO_REQUEST;
    OS_ExitTaskCritical();
 
    return retval;
}
 
#pragma WEAK(BAL_CheckStateRequest)
extern BAL_RETURN_TYPE_e BAL_CheckStateRequest(BAL_STATE_s *pCurrentState, BAL_STATE_REQUEST_e stateRequest) {
    if (stateRequest == BAL_STATE_ERROR_REQUEST) {
        return BAL_OK;
    }
    if (stateRequest == BAL_STATE_GLOBAL_ENABLE_REQUEST) {
        pCurrentState->balancingGlobalAllowed = true;
        return BAL_OK;
    }
    if (stateRequest == BAL_STATE_GLOBAL_DISABLE_REQUEST) {
        pCurrentState->balancingGlobalAllowed = false;
        return BAL_OK;
    }
    if ((stateRequest == BAL_STATE_NO_BALANCING_REQUEST) || (stateRequest == BAL_STATE_ALLOWBALANCING_REQUEST)) {
        return BAL_OK;
    }
 
    if (pCurrentState->stateRequest == BAL_STATE_NO_REQUEST) {
        /* init only allowed from the uninitialized state */
        if (stateRequest == BAL_STATE_INIT_REQUEST) {
            if (pCurrentState->state == BAL_STATEMACH_UNINITIALIZED) {
                return BAL_OK;
            } else {
                return BAL_ALREADY_INITIALIZED;
            }
            /* request to forbid balancing */
        } else {
            return BAL_ILLEGAL_REQUEST;
        }
    } else {
        return BAL_REQUEST_PENDING;
    }
}
 
#pragma WEAK(BAL_Init)
extern STD_RETURN_TYPE_e BAL_Init(DATA_BLOCK_BALANCING_CONTROL_s *pControl) {
    DATA_READ_DATA(pControl);
    pControl->enableBalancing = 0;
    DATA_WRITE_DATA(pControl);
    return STD_OK;
}
 
#pragma WEAK(BAL_ProcessStateUninitalized)
extern void BAL_ProcessStateUninitalized(BAL_STATE_s *pCurrentState, BAL_STATE_REQUEST_e stateRequest) {
    if (stateRequest == BAL_STATE_INIT_REQUEST) {
        pCurrentState->timer    = BAL_STATEMACH_SHORTTIME_100ms;
        pCurrentState->state    = BAL_STATEMACH_INITIALIZATION;
        pCurrentState->substate = BAL_ENTRY;
    } else if (stateRequest == BAL_STATE_NO_REQUEST) {
        /* no actual request pending */
    } else {
        pCurrentState->errorRequestCounter++; /* illegal request pending */
    }
}
 
#pragma WEAK(BAL_ProcessStateInitialization)
extern void BAL_ProcessStateInitialization(BAL_STATE_s *currentState) {
    currentState->timer    = BAL_STATEMACH_SHORTTIME_100ms;
    currentState->state    = BAL_STATEMACH_INITIALIZED;
    currentState->substate = BAL_ENTRY;
}
 
#pragma WEAK(BAL_ProcessStateInitialized)
extern void BAL_ProcessStateInitialized(BAL_STATE_s *currentState) {
    currentState->initializationFinished = STD_OK;
    currentState->timer                  = BAL_STATEMACH_SHORTTIME_100ms;
    currentState->state                  = BAL_STATEMACH_CHECK_BALANCING;
    currentState->substate               = BAL_ENTRY;
}
 
/*========== Externalized Static Function Implementations (Unit Test) =======*/
 
/*========== Getter for static Variables (Unit Test) ========================*/