TMS320F280025C: Generate an interrupt by ePWM

Part Number: TMS320F280025C
Other Parts Discussed in Thread: C2000WARE

/**ePWM initialization with phase shift*/
void epwm_init(uint32_t base, uint16_t phi)
{
    /**Parameters*/
    EPWM_setTimeBaseCounterMode(base, EPWM_COUNTER_MODE_UP);
    EPWM_setTimeBasePeriod(base, EPWM_TBPRD);
    EPWM_setTimeBaseCounter(base, 0U);
    EPWM_setClockPrescaler(base, EPWM_CLOCK_DIVIDER_4, EPWM_HSCLOCK_DIVIDER_4);
    /**Set up shadowing*/
    EPWM_setCounterCompareShadowLoadMode(base, EPWM_COUNTER_COMPARE_A, EPWM_COMP_LOAD_ON_CNTR_ZERO);

    /**Set actions
    For boost assembly*/
    EPWM_setActionQualifierAction(base, SPWM_TOP, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA);
    EPWM_setActionQualifierAction(base, SPWM_TOP, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_ZERO);
    /**For buck assembly*/
    EPWM_setActionQualifierAction(base, SPWM_BOT, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPB);
    EPWM_setActionQualifierAction(base, SPWM_BOT, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_ZERO);

    /// To force command MOS ePWM at a low state.
    if((base == SPWM_U) ||
       (base == SPWM_V) ||
       (base == SPWM_W))
    {
        EPWM_setActionQualifierContSWForceAction(SPWM_U, SPWM_BOT, EPWM_AQ_SW_OUTPUT_LOW);
        EPWM_setActionQualifierContSWForceAction(SPWM_V, SPWM_BOT, EPWM_AQ_SW_OUTPUT_LOW);
        EPWM_setActionQualifierContSWForceAction(SPWM_W, SPWM_BOT, EPWM_AQ_SW_OUTPUT_LOW);
        EPWM_setActionQualifierContSWForceAction(SPWM_U, SPWM_TOP, EPWM_AQ_SW_OUTPUT_LOW);
        EPWM_setActionQualifierContSWForceAction(SPWM_V, SPWM_TOP, EPWM_AQ_SW_OUTPUT_LOW);
        EPWM_setActionQualifierContSWForceAction(SPWM_W, SPWM_TOP, EPWM_AQ_SW_OUTPUT_LOW);
    }

    if(base == SPWM_FOR_ADC)
    {
        EPWM_setTimeBasePeriod(base, EPWM_TBPRD_ADC);
        /**Initialize PWM to add samples ADC in loop close regulation*/
        EPWM_setCounterCompareValue(base, EPWM_COUNTER_COMPARE_A, CMPA_EPWM_ADC);
    }
    if(base == SPWM_REGU)
    {
        EPWM_setTimeBasePeriod(base, EPWM_TBPRD_REGU);
        /**Initialize PWM to regulation interrupt*/
        EPWM_setCounterCompareValue(base, EPWM_COUNTER_COMPARE_A, CMPA_EPWM_REGU);
    }

    /**Configure ePMWs*/
    // Todo comments to explain
    if(phi == 0)
    {
        EPWM_disablePhaseShiftLoad(base);
        EPWM_setPhaseShift(base, phi);
        EPWM_enableSyncOutPulseSource(base, EPWM_SYNC_OUT_PULSE_ON_CNTR_ZERO);
    }
    else
    {
        uint16_t tbphs = epwm_get_tbphs_from_phi(base, phi);
        EPWM_setSyncInPulseSource(base, EPWM_SYNC_IN_PULSE_SRC_SYNCOUT_EPWM1);
        EPWM_enablePhaseShiftLoad(base);
        EPWM_selectPeriodLoadEvent(base, EPWM_SHADOW_LOAD_MODE_SYNC);
        EPWM_setPhaseShift(base, tbphs);
        EPWM_setTimeBaseCounter(base, tbphs);
    }
}

EPWM_setInterruptSource(SPWM_REGU, EPWM_INT_TBCTR_ZERO);
EPWM_enableInterrupt(SPWM_REGU);
Interrupt_register(INT_EPWM3, &isr_regulation);
Interrupt_enable(INT_EPWM3); // Delete after test because it's active in case run in the state machine.

Hi,

I have an issue to configure a ePWM interrupt, I want to generate an interrupt at each period of the ePWM signal. It doesn't work, I never enter an interrupt, I must have forgotten to configure a part ? Can you help me please ?

Thanks 

Damien