TMS320F28379D: Problem with Digital Compare signals used as action qualifiers in EPWM generation

Tool/software:

Hello,

I generated comparator output signal (used for hysteresis inverter current control) and fed it to TRIP4. Afterwards I fed TRIP4 to Digital Comparator and generated DCAH signal from TRIP4.

Then I generated events DCA1 and DCA2, and connected them to T1 and T2 trigger sources for EPWM1 action qualifiers. Afterwards, I connected T1 and T2 to action qualifiers, of EPWM1 that was previously correctly initialized for up-down counting and no manipulation of output signals.

Here is the code

XBAR_setEPWMMuxConfig(XBAR_TRIP4, XBAR_EPWM_MUX00_CMPSS1_CTRIPH);
XBAR_enableEPWMMux(XBAR_TRIP4, XBAR_MUX00);

EPWM_selectDigitalCompareTripInput(EPWM1_BASE, EPWM_DC_TRIP_TRIPIN4, EPWM_DC_TYPE_DCAH);
EPWM_setTripZoneDigitalCompareEventCondition(EPWM1_BASE, EPWM_TZ_DC_OUTPUT_A1, EPWM_TZ_EVENT_DCXH_HIGH);
EPWM_setTripZoneDigitalCompareEventCondition(EPWM1_BASE, EPWM_TZ_DC_OUTPUT_A2, EPWM_TZ_EVENT_DCXH_LOW);

EPWM_setActionQualifierT1TriggerSource(EPWM1_BASE, EPWM_AQ_TRIGGER_EVENT_TRIG_DCA_1);
EPWM_setActionQualifierT2TriggerSource(EPWM1_BASE, EPWM_AQ_TRIGGER_EVENT_TRIG_DCA_2);

EPWM_setDigitalCompareEventSource(EPWM1_BASE, EPWM_DC_MODULE_A, EPWM_DC_EVENT_1, EPWM_DC_EVENT_SOURCE_ORIG_SIGNAL);
EPWM_setDigitalCompareEventSyncMode(EPWM1_BASE, EPWM_DC_MODULE_A, EPWM_DC_EVENT_1, EPWM_DC_EVENT_INPUT_NOT_SYNCED);

EPWM_setDigitalCompareEventSource(EPWM1_BASE, EPWM_DC_MODULE_A, EPWM_DC_EVENT_2, EPWM_DC_EVENT_SOURCE_ORIG_SIGNAL);
EPWM_setDigitalCompareEventSyncMode(EPWM1_BASE, EPWM_DC_MODULE_A, EPWM_DC_EVENT_2, EPWM_DC_EVENT_INPUT_NOT_SYNCED);

EPWM_enableTripZoneSignals(EPWM1_BASE, EPWM_TZ_SIGNAL_DCAEVT2 | EPWM_TZ_SIGNAL_DCBEVT2);
EPWM_enableTripZoneSignals(EPWM1_BASE, EPWM_TZ_SIGNAL_DCAEVT1 | EPWM_TZ_SIGNAL_DCAEVT2);

EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_T1_COUNT_UP);
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_T1_COUNT_DOWN);
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_T2_COUNT_UP);
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_T2_COUNT_DOWN);

However, it does not work, and output EPWM1A is always 0.

Please, could you tell what is the problem.

Regards