Why interrupt causes my program error

Wen Xuanyu

Hello!

I use DM6437. When I open CLK Manager in BIOS , it makes a PRD_clock,and it makes a interrupt (int15 when used time1 or int14 when used time0). This interrupt will make my program abnormal. For example, The same algorithm runs 100 times, it gets different results. Focus is on,when I close the interrrupt or close CLK Manager, the result is normal. Now i have to use the clk interrupt in BIOS,because i want to use nerwork NDK.

I guess the interrupt makes conflict with Cash or DDR2, buf i don't known how to solve it.

Pray for your answer.Thanks a lot.

over 10 years ago

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Hi,
Which example code are you using ?
TI provided or your own ?

0 Wen Xuanyu over 10 years ago in reply to Titusrathinaraj Stalin

Prodigy 80 points

Hi,
My own code. I use CCS3.3 . I use Clock Manager (in BIOS) make a 1ms's timer interrupt. Because interrupt go on with pragram , it likes the interrupt destroy the pragram. For example, one equality( Ptr = gData + addr->fLine * WIDTH; ) Ptr and gData is pointers, sometimes,not all the time, I find Ptr is incorrect. I find many similar situation. I think the code itself hasn't problem, this code is used in DM642 before(No problem in DM642). Now I copy it in DM6437,and when I use timer interrupt ,then problems come.(In DM642 , I also use Clk Manager to make timer interrupt,but no problem) I use two TSK, this code runs in one TSK. I don't know how to solve it ,where to solve it.

0 Titusrathinaraj Stalin over 10 years ago in reply to Wen Xuanyu

TI__Guru** 116100 points

Hi Wen,
Did you port timer interrupt code from DM642 to DM6437 ?
You can get some timer PRD code for DM6437 and its better to use DM6437 code.

Please refer to the following E2E post.

e2e.ti.com/.../29627

0 Wen Xuanyu over 10 years ago in reply to Titusrathinaraj Stalin

Prodigy 80 points

Thanks a lot.

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Why interrupt causes my program error