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CCS/TMS320F280049: Synchronize epwm1 to epwm3

Xiaoyu Lv
Prodigy 100 points
Part Number: TMS320F280049


Tool/software: Code Composer Studio

EPWM_disablePhaseShiftLoad(base1);

   EPWM_setSyncOutPulseMode(base1,EPWM_SYNC_OUT_PULSE_ON_COUNTER_ZERO);

   EPWM_enablePhaseShiftLoad(EPWM2_BASE);

   EPWM_setSyncOutPulseMode(EPWM2_BASE,EPWM_SYNC_OUT_PULSE_ON_EPWMxSYNCIN);

   EPWM_enablePhaseShiftLoad(base3);

   EPWM_setSyncOutPulseMode(base3,EPWM_SYNC_OUT_PULSE_ON_EPWMxSYNCIN);

   EPWM_setPhaseShift(base3,2);

   EPWM_setCountModeAfterSync(base3, EPWM_COUNT_MODE_UP_AFTER_SYNC);

   SysCtl_setSyncInputConfig(SYSCTL_SYNC_IN_EPWM4 ,SYSCTL_SYNC_IN_SRC_EPWM1SYNCOUT);

These codes use for configure synchronize chain for ePWM1-ePWM3. But there are not any codes for connect EPWM1SYNCOUT to EPWM2SYNCIN. These signal are connectted by default? 

By default EPWM1 syncout is passed to EPWM2？

  • 0
    TI__Mastermind 24095 points

    Hi,

    Xiaoyu Lv said:

    These codes use for configure synchronize chain for ePWM1-ePWM3. But there are not any codes for connect EPWM1SYNCOUT to EPWM2SYNCIN. These signal are connectted by default? 

    By default EPWM1 syncout is passed to EPWM2？


    Yes - these are connected by default. No separate configuration needed. Please refer to "Figure 18-7. Time-Base Counter Synchronization Scheme"
    Only in places where there is a Mux - explicit configuration is needed. Other places signals are connected by default.