SK-AM64B: Timer Capture and Compare based examples

Hello Amey,

Which core are you looking at using, and what OS is running on that core?

Regards,

Nick

Hello Nick

I was testing on R5_0_0 core and non rtos based example

Thanks

Amey

Hello Amey,

Is there a specific reason that you want to generate a PWM signal using the Timer module, and NOT the EPWM module?

Please keep in mind that there are also other ways to send a PWM output signal:
ECAP peripheral: https://software-dl.ti.com/mcu-plus-sdk/esd/AM64X/09_01_00_41/exports/docs/api_guide_am64x/DRIVERS_ECAP_PAGE.html 
PRU PWM instances (used in our motor control examples, I'm not sure if there are specific drivers for controlling PWMs directly from R5F core)
PRU software implementation (PRU can manually toggle output signals high or low)

I am sending your thread to our subject owner for MCU+ SDK timer module. I am not sure whether we actually have MCU+ SDK drivers for implementing a PWM with the timer peripheral.

Regards,

Nick

Hello Nick

I was going through the timer module (in Tech Ref doc) and understood that the module can generate PWM signal and measure external signal. There is no specific use case, as of now but just part of understanding the timer module. I did not find any example for the same nor any previous references in the forum

I would also like to see an example for Timer Capture function (i.e. measuring an external signal time period )

Yes I understand the EPWM module can be used. Will go through it as well

Thanks

Amey

Hello Amey,

Thanks for your response.

Amey P said:

I would also like to see an example for Timer Capture function

Allow me sometime to get back to your requirement for the Timer Capture example.

Regards,

Vaibhav

Hello Amey,

I am reading through the TRM and trying to make the code up and working as per the instructions given to demonstrate Timer Capture.

I will keep you updated with any progress.

Thanks for your patience.

Regards,

Vaibhav

Hello Amey,

Apologies in delayed responses as I was involved in some escalations.

Amey P said:

Yes I understand the EPWM module can be used. Will go through it as well

As mentioned earlier as well we would suggest you to use EPWM.

As far as Timer Capture is concerned, I had a chance to go through the TRM and make a block diagram for a basic flow and the registers that will be involved for the Timer Capture implementation. Its shown below.

I will keep you updated with the progress on this.

Regards,

Vaibhav

Thank you Vaibhav

Hello Amey,

Please expect responses by late next week.

Regards,

Vaibhav

Hi Amey,

You can continue to use EPWM module. 

I will make sure to update here/continue the thread once I have the application up and running.

Regards,

Vaibhav

Hi Vaibhav

Okay. I will evaluate EPWM module

Thanks

Amey

Hi Amey,

Thanks for your response.

Regards,

Vaibhav