How can I define the array for Task_hanlde

WEI Alex

Other Parts Discussed in Thread: SYSBIOS, OMAPL138

Hello, all

In the sysbios porting, I am facing a issue about define the array which is used to store all the task handle in the runtime.

something like following

const Task_Handle TskList[3] = { (Task_Handle)SPA , (Task_Handle)SYSX , (Task_Handle)TXPX };

but there is the a error in the build process.error: #28 expression must have a constant value in my env:

CCS 5.3.00090

SYSBIOS: 6.34.02.18

CGT:7.4.1

----

In the DSP/BIOS, It is OK.

over 12 years ago

0 Steven Connell over 12 years ago

TI__Mastermind 45025 points

Hi WEI Alex,

I did some quick experimenting. I was able to update the SYS/BIOS Task Mutex example project for OMAPL138 ARM9:

Void main()
{
    Task_Handle TskList[2];

    Task_Params taskParams;

    /* Create a Semaphore object to be use as a resource lock */
    sem = Semaphore_create(1, NULL, NULL);

    /* Create two tasks that share a resource*/
    Task_Params_init(&taskParams);
    taskParams.priority = 1;
    tsk1 = Task_create (task1, &taskParams, NULL);

    Task_Params_init(&taskParams);
    taskParams.priority = 2;
    tsk2 = Task_create (task2, &taskParams, NULL);

    TskList[0] = tsk1;
    TskList[1] = tsk2;

    BIOS_start();
}

Can you try that?

...

I also made a DSP/BIOS 5.x project for OMAPL138 DSP and added the following code:

TSK_Handle tsk1;
TSK_Handle tsk2;

TSK_Handle TskList[2] = {tsk1, tsk2};

This resulted in the same compilation error that you reported for SYS/BIOS:

"../tsk.c", line 27: error #28: expression must have a constant value
"../tsk.c", line 27: error #28: expression must have a constant value

I was able to create the array of task pointers like this:

extern far TSK_Obj task0;
extern far TSK_Obj task1;

TSK_Handle TskList[] = {&task0, &task1};

Steve

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How can I define the array for Task_hanlde