rtiSetPeriod and COMPx register

Andrew Hartnett

Other Parts Discussed in Thread: HALCOGEN

Hello,

I should first state that I'm using HalCoGen 3.06 because I wasn't able to figure out how to get the lwip example to work with any of the HalCoGen versions after it. So this may have already been fixed.

In my application on the RM48, I need to change the period for my RTI interrupt. The process seemed pretty easy - stop the counter, reset the counter, set the new period, then start the counter again. However I found that in the setPeriod function I actually needed to add the line:

    rtiREG1->CMP[compare].COMPx = period;

in order to get it to function correctly. But I came across this http://e2e.ti.com/support/microcontrollers/hercules/f/312/t/267520.aspx where it seemed to make something not work anymore. Is there a different step I should have taken? It's a low priority because it seems to function correctly now, but I wasn't sure if it's specific to my application or if it's a bug worth pointing out to the HalCoGen team.

Thanks

over 11 years ago

Sunil Oak over 11 years ago

TI__Mastermind 49120 points

Hello Andrew,

Configuring the COMPx in the setPeriod only makes sense if the counter is not already past the "period" value that you configure. In your case you do stop and reset the counter before you set the desired period, so it will work fine.

Regards, Sunil

Sunil Oak over 11 years ago in reply to Sunil Oak

TI__Mastermind 49120 points

Andrew,

Normally the COMPx register is configured using the rtiInit() routine. Do you call this routine once you have stopped and reset the counter?

Regards, Sunil

Andrew Hartnett over 10 years ago in reply to Sunil Oak

Intellectual 890 points

I do not call the rtiInit() routine again after I stop and reset the counter. I tried marking your first response as a verified answer, but it wouldn't let me! I'll try again some other time.

Thanks

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rtiSetPeriod and COMPx register