data2/text/DLP/1035356.txt

Ticket Name: TDA2EXEVM: TDA2 DSP2 XDC ASSERT

Query Text:
Part Number: TDA2EXEVM Other Parts Discussed in Thread: SYSBIOS We run our algorithm on DSP2. Sometimes DSP2 will have XDC Assert message and then DSP2 will crash. How can we solve it? Log: [DSP2 ] 11173.232111 s: ### XDC ASSERT - ERROR CALLBACK START ### [DSP2 ] 11173.232141 s: [DSP2 ] 11173.232202 s: assertion failure: A_badContext: bad calling context. See GateMutex API doc for details. [DSP2 ] 11173.232233 s: [DSP2 ] 11173.232233 s: ### XDC ASSERT - ERROR CALLBACK END ###

Responses:
Have any update?

Hi, Please refer to BIOS API doc for GateMutex. Or, you can find the source under ~/bios_6_46_06_00/packages/ti/sysbios/gates/GateMutex.c. You are hitting the below error where GateMutex_enter() is called in HWI or SWI context. /*
 *  ======== GateMutex_enter ========
 *  Returns FIRST_ENTER when it gets the gate, returns NESTED_ENTER
 *  on nested calls.
 *
 *  During startup, Task_self returns NULL.  So all calls to the 
 *  GateMutex_enter look like it is a nested call, so nothing done.
 *  Then the leave's will do nothing either. 
 */
IArg GateMutex_enter(GateMutex_Object *obj)
{
    Semaphore_Handle sem;

    /* make sure we're not calling from Hwi or Swi context */
    Assert_isTrue(((BIOS_getThreadType() == BIOS_ThreadType_Task) ||
                   (BIOS_getThreadType() == BIOS_ThreadType_Main)),
                   GateMutex_A_badContext);

    if (obj->owner != Task_self()) {
        sem = GateMutex_Instance_State_sem(obj);
        Semaphore_pend(sem, BIOS_WAIT_FOREVER);

        obj->owner = Task_self();

        return (FIRST_ENTER);
    }

    return (NESTED_ENTER);
} Regards, Stanley