TMS570LS0914: TMS570LS0914

Chanchal Gondane

Part Number: TMS570LS0914
Other Parts Discussed in Thread: TMS570LC4357

Hi,

I want to use ETPWM module for controller TMS570LS0914

When i am calling this function etpwmSetCmpA() and set the different duty cycle to check the pwm signals on ePWM1A and ePWM1B pin and if run the code step by step , i am no able to get any signals on Pins only getting LOW signals on Pins and if i do continue or free running of code that time i am able to get signals on both the Pins ePWM1A and epwm1B(getting duty cycle whatever i have set in code) which is exactly i am expected.

But when same thing i am doing with the other controller which is TMS570LC43 my code is working as expected.

is there any different between controller ??

over 2 years ago

0 jagadish gundavarapu over 2 years ago

TI__Guru 63045 points

Hi Chanchal,

We started working on your issue and will provide an update soon.

Thanks & regards,
Jagadish.

0 jagadish gundavarapu over 2 years ago in reply to jagadish gundavarapu

TI__Guru 63045 points

Chanchal Gondane said:
But when same thing i am doing with the other controller which is TMS570LC43 my code is working as expected.

So, you mean in TMS570LC43 you are getting signals even though you are doing step by step debugging?

Is your code and configurations being same on both the controllers?

Can i get your code, is it possible to share it?

Thanks & regards,
Jagadish.

0 Chanchal Gondane over 2 years ago in reply to jagadish gundavarapu

Prodigy 30 points

Yes on TMS570LC43 it is working when i am doing step by step and code and configurations is same for both the code

int main(void)
{
/* USER CODE BEGIN (3) */
EPWMIntf_RetCode_t Enm_Ret;

GIOIntf_Init();

EPWMIntf_Init();
EPWMIntf_Enable(EPWMINTF_EPWM1);

Enm_Ret = EPWMIntf_SetOutDuty(EPWMINTF_EPWM1, EPWMINTF_EPWMA, 10U);

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetOutDuty(EPWMINTF_EPWM1, EPWMINTF_EPWMB, 20U);
}

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetPeriod(EPWMINTF_EPWM1, 25U);
}

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetOutDuty(EPWMINTF_EPWM1, EPWMINTF_EPWMA, 50U);
}

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetOutDuty(EPWMINTF_EPWM1, EPWMINTF_EPWMB, 70U);
}

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetOutDuty(EPWMINTF_EPWM1, EPWMINTF_EPWMA, 0U);
}

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetOutDuty(EPWMINTF_EPWM1, EPWMINTF_EPWMB, 100U);
}

if (Enm_Ret == EPWMINTF_SUCCESS)
{
Enm_Ret = EPWMIntf_SetSignal(EPWMINTF_EPWM1, 10U, 25U, 35U);
}

while (1)
{
}
/* USER CODE END */

return 0;
}

main code is attached herewith.

Regards,

Chanchal

0 jagadish gundavarapu over 2 years ago in reply to Chanchal Gondane

TI__Guru 63045 points

Hi Chanchal,

I could see the behavior you mentioned at my end now, let me analyze further before providing update.

Thanks & regards,
Jagadish.

0 jagadish gundavarapu over 2 years ago in reply to jagadish gundavarapu

TI__Guru 63045 points

Hi Chanchal,

I am discussing this with internal team,

Please expect some delay in my update and i will provide update as soon as i got feedback from them.

Thanks & regards,
Jagadish.

0 jagadish gundavarapu over 2 years ago in reply to jagadish gundavarapu

TI__Guru 63045 points

Hi Chanchal,

Apologies for the delay and i didn't get update from internal team yet.

--
Thanks & regards,
Jagadish.

0 Chanchal Gondane over 2 years ago in reply to jagadish gundavarapu

Prodigy 30 points

No problem

0 jagadish gundavarapu over 2 years ago in reply to Chanchal Gondane

TI__Guru 63045 points

Hi Chanchal,

Today i found one old thread

(+) TMS570LC4357 ePWM tripzone nTZ6 problem. - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

In this thread they are using nTZ6 signal to stop PWM in debug mode.

Here is the GEL script to enable the CTI

(+) TMS570LC4357: How to enable CTI - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

I think it is the right way to stop the PWM signals in TMS570LC4357.

Thanks & regards,
Jagadish.