HAL_setupPWMPhaseShift()

youjun zhang

Hi,TI experts：

In tidm_02010_dmpfc_0013x project,HAL_setupPWMPhaseShift() function.

EPWM_setTimeBaseCounter(obj->pwmhandle[0],6),EPWM_setTimeBaseCounter(obj->pwmhandle[1],8),EPWM_setTimeBaseCounter(obj->pwmhandle[2],10)

Why is the phase shift value different when setting three-phase PWM？

over 1 year ago

0 Varshashree Kottadamane over 1 year ago

TI__Prodigy 430 points

Hi,

Please note our SME is currently out of office and will be back by 16th October.

Thanks,

Varsha

0 Yanming Luo over 1 year ago in reply to Varshashree Kottadamane

TI__Guru** 115420 points

Compensate the delay for setting the value to CMPR which takes 2 CPU cycles.

0 youjun zhang over 1 year ago in reply to Yanming Luo

Intellectual 600 points

I can not find CMPR in datasheet?where can find the CMPR?

0 Yanming Luo over 1 year ago in reply to youjun zhang

TI__Guru** 115420 points

Typo. PWM Timer counter. To make sure that all of the timer counter are the same.

0 youjun zhang over 1 year ago in reply to Yanming Luo

Intellectual 600 points

Where can I see the explanation that requires 2 cycles？

0 Yanming Luo over 1 year ago in reply to youjun zhang

TI__Guru** 115420 points

Take a look at "TMS320C28x CPU and Instruction Set Reference Guide"

0 youjun zhang over 1 year ago in reply to Yanming Luo

Intellectual 600 points

whcih page?

0 youjun zhang over 1 year ago in reply to Yanming Luo

Intellectual 600 points

Can you take a screenshot？thanks

0 Yanming Luo over 1 year ago in reply to youjun zhang

TI__Guru** 115420 points

Check how many CPU cycle will be taken by the instruction in this manual, and check what instructions are using by this code in CCS with disassembly window.

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HAL_setupPWMPhaseShift()