Problem in constantly frequency changing

[Harsh_18]

Hii, i am using NUCLEO-G474RE board and i want to generate pwm signal in which frequency change frequently .But i dont know why this code is not working.

[Issamos]

Hello @Harsh_18 

First, you need to declare the PWM_start() function before the while(1) (in the main function). 

Also, what is the original value of your arr variable.

Best regards.

II

[Harsh_18]

I have already declare PWM_Start() globally. And the original value of arr is 200 that i mention globally.

[Issamos]

Hello @Harsh_18 

I think this video may help you.

Best regards.

II