Keep CLA running when C28x is halted.

Ari Mendes dos Santos

I want to use the CLA to control a buck converter. But when the C28x is halted, reach a breakpoint, the CLA must keep the converter running, Is it possible?

over 13 years ago

0 Manish Bhardwaj over 13 years ago

TI__Mastermind 43730 points

Yes,

this is possible,

0 Ari Mendes dos Santos over 13 years ago in reply to Manish Bhardwaj

Expert 2560 points

How can I do that?

I think that I need to clear ADC interrupt flag so the next SOC can occur, I'm trying this:

MMOVF32 MR3,#1.0

MF32TOUI16 MR2,MR3

MMOV16 @_AdcRegs.ADCINTFLGCLR.bit.ADCINT7,MR2

0 Ari Mendes dos Santos over 13 years ago in reply to Ari Mendes dos Santos

Expert 2560 points

I think that CLA don't have access to the ADCINTFLCLR register, now I'm trying clear the flag using the assembler code:

MMOVXI MR1,#0x40

MMOV16 @_AdcRegs.ADCINTFLGCLR.all,MR1

Is there a CLA example that are triggered by the ADC or by the PWM that don't need to generate a C28x interrupt to clear the flag?

0 Manish Bhardwaj over 13 years ago in reply to Ari Mendes dos Santos

TI__Mastermind 43730 points

CLA can clear interrupt flags on PWM registers,

If the CLA task is triggered by the ADC you can configure the ADC to be in auto clear mode where the ADC does not wait for the INT clear before the next conversion can begin,

You can check the ADC_SOC_Cnf file in the digital power library where CLA mode is supported,

if (mode == 2)       // CLA mode, Start Stop ADC with auto clr ADC Flag
   {
       AdcRegs.ADCINTFLG.bit.ADCINT1 = 0; // clear interrupt flag for ADCINT1
       AdcRegs.INTSEL1N2.bit.INT1CONT = 1;   // set ADCInterrupt 1 to auto clr
       AdcRegs.ADCINTSOCSEL1.all=0x0000;   // No ADCInterrupt will trigger SOCx
          AdcRegs.ADCINTSOCSEL2.all=0x0000;
   }

0 Ari Mendes dos Santos over 13 years ago in reply to Manish Bhardwaj

Expert 2560 points

Thanks Manish.

This is working now.

I changed the Example_2803xClaAdcFirFlash:

AdcRegs.IntSEL7N8.bit.INT7CONT= 1; //set ADCInterrupt to auto clr.

Now when the C28x halt, the CLA keep reading the ADC,filtering and writing to PWM.

I'm starting to like the CLA!

C2000™︎ microcontrollers

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Keep CLA running when C28x is halted.