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Cengizhan SAY?ILI
Cengizhan SAY?ILI
Associate
March 23, 2017
Question

Problem with STMicroelectronics GNU GCC compiler

  • March 23, 2017
  • 3 replies
  • 1029 views
Posted on March 23, 2017 at 09:31

Problem with STMicroelectronics GNU GCC compiler

Below partial code of our project.

typedef struct

{

    U_16 no;

    U_8 duration;

    BuzzerSounds buzzerSong;

    priorityLevels priority;

    TBOOL buzzerPeriodic;

    TBOOL isPlayed;

}event;

typedef struct

{

    U_32 canID;

    U_64 canData;

}canMSG;

typedef enum

{

    PRIORITY_BLOCKER = 0,

    PRIORITY_HIGH,

    PRIORITY_MID,

    PRIORITY_LOW,

    PRIORITY_TRIVIAL

}priorityLevels;

event eventRecord = {0,0,B_IDLE,255,0,0};

//This red part successfully compiled but not works.

static canMSG msg;

msg.canID   = CAN_ID_SETUPREAD | eventDeviceID;

msg.canData = (0x04) + (971uLL << 8) + (((U_64)eventRecord.no) << 32) + (((U_64)eventRecord.duration) << 48) + (((U_64)eventRecord.priority) << 56);

can0SendMessage(msg);

//When i changed red part of code like this, it works.

static canMSG msg;

msg.canID   = CAN_ID_SETUPREAD | eventDeviceID;

msg.canData = (0x04);

msg.canData += (971uLL << 8);

msg.canData += (((U_64)eventRecord.no) << 32);

msg.canData += (((U_64)eventRecord.duration) << 48);

msg.canData += (((U_64)eventRecord.priority) << 56);

can0SendMessage(msg);

//Also

when i changed red part of code like this, it works again

static canMSG msg;

msg.canID   = CAN_ID_SETUPREAD | eventDeviceID;

msg.canData = (0x04) + (971uLL << 8) + (((U_64)eventRecord.no) << 32) + (((U_64)eventRecord.duration) << 48);

can0SendMessage(msg);

//I think problem is enum part of code.

(((U_64)eventRecord.priority) << 56)

I compile this project with Hightec GCC 4.6.3 toolchain, there is no problem. Red part works normally.

    This topic has been closed for replies.

    3 replies

    Erwan YVIN
    Erwan YVIN
    ST Technical Moderator
    April 4, 2017
    Posted on April 04, 2017 at 11:08

    Hello Cenzighan ,

    The problem has been submitted in your tracker.

    In some strange cases in the free gcc compiler  (optimization issue)

    Do not hesitate to force -O0 optimization in some parts of sensitive code.

                   Best regards

                                Erwan

    In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.
    Cengizhan SAY?ILI
    Cengizhan SAY?ILIAuthor
    Associate
    April 5, 2017
    Posted on April 05, 2017 at 10:55

    Hello Erwan,

    I always use -O0 . I think problem is not optimization.

    Thanks.

    Erwan YVIN
    Erwan YVIN
    ST Technical Moderator
    October 12, 2017
    Posted on October 12, 2017 at 15:55

    Hello ,

    after checking the 64 bits issue ,

    No problem is noticed

    (Cf Screenshot)

    typedef struct
{
uint16_t no;
uint8_t duration;
uint16_t buzzerSong;
uint16_t priority;
}event;
typedef struct
{
uint32_t canID;
uint64_t canData;
}canMSG;
typedef enum
{
PRIORITY_BLOCKER = 0,
PRIORITY_HIGH,
PRIORITY_MID,
PRIORITY_LOW,
PRIORITY_TRIVIAL
}priorityLevels;
event eventRecord = {0,0,1,255,0,0};
canMSG msg;
....
uint32_t no=1;
uint32_t duration = 1;
uint32_t priority = 1;
msg.canData = (0x04) + (971uLL << 8) + (((uint64_t)no) << 32) + (((uint64_t)duration) << 48) + (((uint64_t)priority) << 56);
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    0690X00000608X8QAI.png

    Best regards

    Erwan

    In order to give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.
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