Question

我有以下代码

    typedef struct{
    uint8_t carOpening:2;
    uint8_t fCarElement:4;
}lockState_t;

    enum Doors
{
    DRIVER_DOOR = 0,
    PASSENGER_DOOR,
    ...
    NUMBER_OF_ELEMENTS
};

class DoorState
{
public:
    DoorState(Doors door, uint8_t initialState)
    {
        fState.fCarElement = static_cast<uint8_t>(door);
        if(initialState == SIG_VAL_DOOR_CLOSED)
        {
            fState.carOpening = static_cast<uint8_t>(DOOR_CLOSED);
        }
        else if(initialState == SIG_VAL_DOOR_OPENED)
        {
            fState.carOpening = static_cast<uint8_t>(DOOR_OPENED);
        }
        else
        {
            fState.carOpening = static_cast<uint8_t>(DOOR_UNKNOWN);
        }
    };
    void checkSignal(uint8_t signal);
    enum tState { DOOR_UNKNOWN = 0, DOOR_CLOSED, DOOR_OPENED };
private:
    static const uint8_t SIG_VAL_DOOR_CLOSED = 0x00;
    static const uint8_t SIG_VAL_DOOR_OPENED = 0x01;

    lockState_t fState;
};

然后我有一些此类的实例，例如：

DoorState fDriverDoorState;
DoorState fPassengerDoorState;

这是我初始化实例的方式：

, fDriverDoorState(DRIVER_DOOR
, DS::instance().get<uint8_t>(DS::ComStatZvKlappen_StDswDrd_ID))
, fPassengerDoorState(PASSENGER_DOOR, DS::instance().get<uint8_t>(DS::ComStatZvKlappen_StDswPsd_ID))

然后我正在检查门的状态是否已更改，并发布一条消息，如果它具有：

tState doorState = DOOR_UNKNOWN;
if (SIG_VAL_DOOR_CLOSED == signal)
{
    doorState = DOOR_CLOSED;
}
else if (SIG_VAL_DOOR_OPENED == signal)
{
    doorState = DOOR_OPENED;
}

if(doorState != static_cast<tState>(fState.carOpening))
{
    fState.carOpening = static_cast<uint8_t>(doorState);
    if(DOOR_UNKNOWN != doorState)
    {
        LooperEventBroker::publish(::csm::events::CsmEvents::VEHICLE_LOCK_STATE_EVENT(), &fState);
        Logger::info(VEHICLE, "Door %s event published for %s",
                     doorState == DOOR_OPENED ? "openend" : "closed", opening2string(fState.fCarElement));
    }
}

在大多数情况下，它运行良好。奇怪的是，有时我看到此日志被发布： “不会为INVALID DOOR发布门关闭事件”，这不会发生，因为没有实例使用INVALID DOOR初始化，并且从未修改存储门类型的fCarElement。这意味着fCarElement以某种方式被损坏。问题是在哪里或为什么？

这里要求执行opening2string函数：

static const char* opening2string(uint8_t opening)
{
    switch (opening)
    {
        case DRIVER_DOOR:
            return "DRIVER DOOR";
        case PASSENGER_DOOR:
            return "PASSENGER DOOR";
        ...
        default:
            return "INVALID DOOR";
    }
}

关于，加布里埃尔

是什么导致仅在初始化时设置的值损坏？

0 个答案: