Clock interrupt doen't work on NDK project

Katsuhiko,

Thanks for providing the test example code. I was able to build and run on C6657 DSP. I saw diff_TSC is about 400,000. This is 400,000 ns, or 400 us (not 400 ns you mentioned). Then, why it is not 20 us you set? In the helloworld.cfg, there is a setting

Clock.tickPeriod = 20;

In, knl\Clock.xdc, it explained:.

     *  With TickMode_PERIODIC the timer will interrupt the CPU at
     *  a fixed rate, defined by the tickPeriod. 

So, with this set the clock interrupts DSP every 20 ticks. That is why 20 x20 =400. If you change the setting of Clock.tickPeriod, you should see the diff_TSC changes accordingly.

Regards, Eric

Eric,

I have one more question.

I executed clock interrupt with attached sample core_0_project, it worked propelry.

core_0_project executes clock interrupt for every 20us, and it works on cpu core 0.

But when I executed core_0_project on cpu core0 and core_1_project on cpu core 1 simultaneously,

the interval of clock interrupt of core_0_project is incorrect.

I can't understand why this happens.

Please give me advise.

1778.2013-5-3.zip

Regards,

Katsuhiko Watanabe

Hi, Eric

Could you give me some advise?

I am developing currently, and if this is not resolved, I can't proceed.

Regards,

Katsuhiko Watanabe

Katsuhiko,

I thought the issue is BIOS related when create/run clock on two cores. Could you post the question to BIOS forum? People there are more familiar.

Regards, Eric 

Eric,

Thank you for your reply.

I will post to BIOS forum.

Regards,

Katsuhiko Watanabe