What is the lower frequency signal generated from HR Timer?

[Nsg1987]

Hello,

I am able to generate PWM frequency of 640 Hz using HR Timer. Now I want to generate the same with 100 Hz. I tried to manage clock prescaler but found no success.

[Diane POMABIA]

Hi @Nsg1987​ 

Can you precise STM32 that you're using ?

Regards

Diane

[Nsg1987]

Hi @Diane POMABIA​ 

I am using STM32G474VBTx.

Regards,

Nikhil

[Diane POMABIA]

Hi @Nsg1987​ 

You can refer to AN4539 that will give you more detail about HR Timer feature :

https://www.st.com/resource/en/application_note/an4539-hrtim-cookbook-stmicroelectronics.pdf

Regards

DianeP