Part Number: TMS320F280049C
Tool/software: Code Composer Studio
Hello,
I have a problem with setting the phase shift.
If I set it during the initialization it is working fine:
EPWM_disablePhaseShiftLoad(VIENNA1_DRV_EPWM_BASE);
EPWM_setSyncOutPulseMode(VIENNA1_DRV_EPWM_BASE, EPWM_SYNC_OUT_PULSE_ON_COUNTER_ZERO);
EPWM_enablePhaseShiftLoad(VIENNA2_DRV_EPWM_BASE);
EPWM_setSyncOutPulseMode(VIENNA2_DRV_EPWM_BASE,EPWM_SYNC_OUT_PULSE_ON_COUNTER_ZERO);
EPWM_setCountModeAfterSync(VIENNA2_DRV_EPWM_BASE, EPWM_COUNT_MODE_UP_AFTER_SYNC);
//Set phaseshift. The maximum count is: VIENNA_EPWM_SWITCHING_PERIOD (5000ticks)
EPWM_setPhaseShift(VIENNA2_DRV_EPWM_BASE, 2000);
but... if I set it while running the program, from a variable, then the value is written in the register but not updated to the output:
uint16_t PSFB_shift = 2000;
The PWM configuration is as follows:
EPWM_setClockPrescaler(PWMbase,VIENNA_EPWM_EPWMCLK_DIV, VIENNA_EPWM_HSCLK_DIV);
EPWM_setEmulationMode(PWMbase, EPWM_EMULATION_FREE_RUN);
//
// Configure ePWM for count-up operation
//
EPWM_setTimeBaseCounter(PWMbase, 0);
EPWM_setTimeBasePeriod(PWMbase, VIENNA_EPWM_TBPRD);
EPWM_setPeriodLoadMode(PWMbase, EPWM_PERIOD_SHADOW_LOAD);
EPWM_selectPeriodLoadEvent(PWMbase, EPWM_SHADOW_LOAD_MODE_COUNTER_ZERO);
EPWM_setTimeBaseCounterMode(PWMbase, EPWM_COUNTER_MODE_UP);
EPWM_setPhaseShift(PWMbase,0);
Can anyone help me, please?
Thank you very much.
BR,
Luis
