CCS/LAUNCHXL-F28379D: Epwm Enable/Disable

Saurabh Khobe

Intellectual 425 points

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: C2000WARE

Tool/software: Code Composer Studio

Hi ,

Does anybody know how to enable and disable epwm module in LAUNCHXL-F28379D ?

I have tried the soft-reset and epwm clock enable and disable but it does not affect epwm pin.

I want to enable and disable epwm pin as per need for motor control.

over 7 years ago

0 Vasudha Bhadoria over 7 years ago

TI__Genius 10845 points

Hi Saurabh,

You can use epwm trip functionality to trip the signals. You can refer the Trip-Zone submodule section in EPWM chapter in device TRM & trip example present in C2000Ware for more details. Let me know if this solves your issue.

Thanks
Vasudha

0 ashutosh bhatt over 7 years ago

Expert 1490 points

Saurabh,

use the below code :
Disable the PWM where x is the pwm No.
EALLOW;
EpwmxRegs.TZFRC.bit.OST = 1;
EpwmxRegs.TZCTL.bit.TZA = 0x02; // fOR FORCE low
EpwmxRegs.TZCTL.bit.TZB = 0x02; //fOR fORCE loW
EDIS;

Enable the PWM where x is the pwm No.
EALLOW;
EpwmxRegs.TZCTL.bit.OST = 0x01; // fOR FORCE low
EpwmxRegs.TZCTL.bit.OST = 0x01; //fOR fORCE loW
EDIS;

Better you go through the URM for more information.

Ashutosh Bhatt

0 Saurabh Khobe over 7 years ago in reply to ashutosh bhatt

Intellectual 425 points

Yes sure i will try it.

0 Saurabh Khobe over 7 years ago in reply to Saurabh Khobe

Intellectual 425 points

void motor_start(void)
{
EALLOW;
EPwm1Regs.TZCLR.bit.OST = 1; // Clear the forced trips -- OFF
EDIS;
DELAY_US(1000000);

}

void motor_stop(void)
{
DELAY_US(1000000);
EALLOW;
EPwm1Regs.TZFRC.bit.OST= 1; // Create the forced trips --ON
EPwm1Regs.TZCTL.bit.TZA = 0x02; // fOR FORCE low
EDIS;
}

Above works fine for me..

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CCS/LAUNCHXL-F28379D: Epwm Enable/Disable