Kinetis MicrocontrollersのトピックRe: PWM output frequency and duty

PWM output frequency and duty

pandi — Thu, 25 Jan 2024 14:42:06 GMT

Hi everyone

@xiangjun_ron

In kv31f512vll12 configured FTM0 PWM generate to set 16 KHZ frequency and Duty cycle 60% but PWM output pulse

not constant its like varying 65%,70%.if any changes of timer configuration guide me and

how to constant PWM generation also if any one know let me know.

how to configure constant khz and duty

I want to duty change means duty also not changing.

PANDI

xiangjun_rong — Fri, 26 Jan 2024 02:05:08 GMT

Hi,

I suggest you call the FTM_UpdatePWMDutyCycle() in the FTM overflow ISR rather than calling it in main loop while(1) in main.

If you call it in main loop, you call it too frequently.

Hope it can help you

XiangJun Rong

pandi — Tue, 30 Jan 2024 13:07:16 GMT

thanks