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Original question:

CCS/TMS320F280049C: 280049 ADC in Parallel End of Conversion and CLA

CCS/TMS320F280049C: Adc interrupt triggers both normal interrupt and CLA ?

Francois Beaucamp
Intellectual 400 points
Part Number: TMS320F280049C

Tool/software: Code Composer Studio

Hi,

I've continued and have the following situation :

EPwm triggers Adca SOC's -> Work fine

Adca End Of Conversion triggers INT1 and AdcaIsr1 -> Works fine

Adca End Of Conversion triggers INT2 and CLA1 Task 1 -> Works fine also

But I've to declare interrupt AdcaIsr2 which is also triggered by INT2 (both AdcaIsr and CLA are triggered)

If I remove  interrupt AdcaIsr2, the program doesn't work.

Is there a possibility to trigger only CLA1 Task with INT2 ?

(In the example cla_ex2_adc_fir32.c, it sounds that there is no Adc interrupt routine declared ?)

I hope my explanations are clear, feel free to ask me for any details

Best regards

francois

  • 0
    TI__Mastermind 32425 points

    Hi Francois,

    Yes, the CLA-ADC example uses the ADC EOC to trigger CLA task. But the EOC interrupt is not enabled in PIE and hence the C28x core is not interrupted.

    You can refer to the steps described in CLA-ADC example.

    If you are still facing the problem, please share with us the init code.

    Regards,

    Veena

  • 0 in reply to Veena Kamath
    Intellectual 400 points

    Hi Veena,

    Oh I see, my mistake was to have completely declared the Adca INT2 interrupt.

    I've removed the interrupt firing bits :

    //PieCtrlRegs.PIEIER10.bit.INTx2 = 1;
    //IER |= M_INT10;

    and now, I've only the CLA 1Task1 fired.

    Many thanks for the reply,
    Best regards,

    francois