SEM_pendBinary cause IFR could not be flag

Armstrong Xu

Other Parts Discussed in Thread: DM3730

Dear all,

I found in my pjt, it could not rcv INTR or running HWI ISR during my task is running after its SEM has been post.

Follow is my code,

VOID dl_process()
{
    UINT8 i = 1;
    volatile UINT32 uiTmp1;
    while(i)
    {
        //SEM_pendBinary(&SemObjRxSymbolReceived, SYS_FOREVER);
        //LOG_printf(&trace, "--------Receive %d DL symbol at %d (us) ", gusRxSeq, TSCL/800 );

            guiTskFrameNum++;
               if (guiTskFrameNum%50==0)
               {
                   GPIO5_Write(13, 0);
               }
               else if (guiTskFrameNum%50==25)
               {
                   GPIO5_Write(13, 1);
               }

            LOG_printf(&trace, "############DL Frame Process Number is %d", guiDlFrameNum);
               for (uiTmp1=0;uiTmp1<500000;uiTmp1++)
               {
                      asm(" NOP ");
               }
            asm(" NOP ");
            LOG_printf(&trace, "--------DL Frame process finish %d (us) ", TSCL/800 );
    }
}

VOID Timer5ISR()
{
        guiDlFrameNum = (guiDlFrameNum + 1) % 1000;
        if (guiDlFrameNum ==0)
        {
             GPIO5_Write(15, 0);
        }
        else if (guiDlFrameNum ==500)
        {
             GPIO5_Write(15, 1);
             //SEM_postBinary(&SemObjRxSymbolReceived);
        }
}

Timer5ISR() is a timer HWI, I set the timer to run the ISR in 1KHz . dl_process() is a task which just toggle some GPIO to make a LED flash.

Both task and HWI work will run fine if I comment the SEM_pendBinary(), the HWI will premmpt the task even if it is running.

But when I use SEM_pendBinary, the LED did not flash which means some error happen. I pause the code, found the PC stop at utl_halt, the LOG indicated that the task run only once,

So I use breakpoint in my task(), and find that the IFR has not been flagged, but the GIE and IER is enabled.

I am new to DSP/BIOS , and I use DM3730 with BIOS V5 under CCS V4.2.

I do not know why this error happen, can anyone lend me with a hand.

Best regards!

over 14 years ago

0 David Friedland over 14 years ago

TI__Mastermind 18320 points

What does your SEM_create call look like?

0 Armstrong Xu over 14 years ago in reply to David Friedland

Intellectual 350 points

I created by GUI:

bios.SEM.OBJMEMSEG = prog.get("IRAM");

bios.SEM.create("SemObjRxSymbolReceived");

0 David Friedland over 14 years ago in reply to Armstrong Xu

TI__Mastermind 18320 points

Armstrong,

It looks like you created the semaphore with all default values?

Since you are using the binary semaphore APIs, you must change the semaphore mode to mode_BINARY.

Dave

0 Armstrong Xu over 14 years ago in reply to David Friedland

Intellectual 350 points

Dave,

I check my SEM configuration in my .tcf file, I do not know how to change the SEM mode to binary , the only thing to do is to set the initial value of the SEM count.

By the way, is it necessay to change the mode? I think the difference between "SEM_pendBinary / SEM_postBinary" and "SEM_pend / SEM_post" is the way to change the SEM count, "-1 / +1" or "|1 / & ~1", and there is no need to change the mode.

Thanks!

0 David Friedland over 14 years ago in reply to Armstrong Xu

TI__Mastermind 18320 points

Just to make sure -- exactly what version of DSP/BIOS 5 are you running?

0 Armstrong Xu over 14 years ago in reply to David Friedland

Intellectual 350 points

CCS V4.2.3.00004

bios_5_41_10_36

0 David Friedland over 14 years ago in reply to Armstrong Xu

TI__Mastermind 18320 points

Armstrong,

It looks like I'm steering you down a false path. The mode flag is not used in the version of BIOS that you are using. At this point I don't see any other issues, but I'll ask some others to see if they have any ideas.

Dave

0 Armstrong Xu over 14 years ago in reply to David Friedland

Intellectual 350 points

Dave,

Attacheed file is my pjt.

Since on our board, we use UBoot to do some initialization, so I comment the SDRC part in "am-dm37x_cortexA.gel" and reconfig the DPLL of IVA2.2 in my pjt.

Thanks!

2235.WMB_DSP_TDD_V1_Simple_624.zip

0 Armstrong Xu over 14 years ago in reply to Armstrong Xu

Intellectual 350 points

Dave,

Is it necessary to enable the heap when using SEM? Some one told me that DSP/BIOS will use heap when using SEM object.

Thanks!

0 ToddMullanix over 14 years ago in reply to Armstrong Xu

TI__Guru* 96960 points

Hi,

Since you create the SEM_Obj statically, a heap is not needed it. You said that the LOG showed an error. What was the error? What does the ROV (RTSC Object View) show when you look at the SEM? What about the TSK?

Todd

0 Armstrong Xu over 14 years ago in reply to ToddMullanix

Intellectual 350 points

Dear all,

I think I find the problem.

"HWI_enalbe", ''SWI_enable" and "TSK_enable" has been called frome my main() funciton, which is prohibit.

But I do not know what will happen if I enable above component, does it crash BIOS?

Thanks!

0 David Friedland over 14 years ago in reply to Armstrong Xu

TI__Mastermind 18320 points

Armstrong,

The point is of the restriction is that the BIOS scheduler is not started yet, so making these calls during main() will lead to unpredictable behavior.

Dave

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SEM_pendBinary cause IFR could not be flag