S32KのトピックS32K116 EVB problem pwm using in function

S32K116 EVB problem pwm using in function

mfatihkoseoglu — Tue, 06 Apr 2021 05:00:47 GMT

Hello, I'am using S32K116 evb. I want to use pwm driver but if i use this function in another function and i call this function in while() there is a problem. If i use ftm pwm driver in while loop, there is not problem. I add picture about this problem. Why is there this problem?

Re: S32K116 EVB problem pwm using in function

Omar_Anguiano — Mon, 12 Apr 2021 20:18:41 GMT

Hello

Hope you are well.
The status of the function is read through a variable type status_t. Adding a small delay when the function is called could solve the problem.
Besides moving the methods of the function to a while are doing another change to the function. A more detailed description of the function might help.

Let me know if this solves the problem, if you have more questions do not hesitate to ask me.
Best regards,
Omar

Re: S32K116 EVB problem pwm using in function

mfatihkoseoglu — Tue, 13 Apr 2021 07:19:13 GMT

Hello Omar,

Thanks, I am fine and hope you too.

I add a delay and this func is work. But why? Why I use delay?

Re: S32K116 EVB problem pwm using in function

Omar_Anguiano — Fri, 23 Apr 2021 19:25:49 GMT

Hello

The registers you update in the FTM_DRV_UpdatePwmChannel() function need some cycles to be updated. You can consult it in detail in chapter 47.5.12.3 of the reference manual.

If you have more questions do not hesitate to ask me.
Best regards,
Omar