LAUNCHXL-F2800137: ePWM SyncOut pulse in up-down count mode

Hi Samo,

Yes there will be two sync out pulses, one for the up count, one for the down count events.

There is a way to do this.

1. Set up sync out on CMPB event.

2. Generate an ISR on PRD or ZRO

3. Disable or enable the syncout pulse based on CTR direction.

__interrupt void INT_myEPWM0_ISR(void)
{
    if(EPWM_getTimeBaseCounterDirection(myEPWM0_BASE))
    {
        EPWM_enableSyncOutPulseSource(myEPWM0_BASE, EPWM_SYNC_OUT_PULSE_ON_CNTR_COMPARE_B);

    }else
    {
        EPWM_disableSyncOutPulseSource(myEPWM0_BASE, EPWM_SYNC_OUT_PULSE_ON_CNTR_COMPARE_B);

    }

    //
    // Clear the flags - we will continue to take this interrupt until the TZ
    // pin goes high.
    //
    EPWM_clearEventTriggerInterruptFlag(myEPWM0_BASE);

    //
    // Acknowledge this interrupt to receive more interrupts from group 2
    //
    Interrupt_clearACKGroup(INT_myEPWM0_INTERRUPT_ACK_GROUP);
}