PWM duty calculation s32k144

[AjRj14]

Hi, 

I am following below application note for PWM duty calculation

https://www.nxp.com/docs/en/application-note/AN5303.pdf

I am using  edge capture  mode and I am enabling interrupts at both rising and falling edges.

To calculate the duty, I want to calculate the ON time of input PWM signal (or) I want to measure the period between rising and falling edge and also when the PWM signal is high.

So could you please tell me how to check whether the input PWM signal is high or low in FTM IRQ handler.?

Or if there are any other ways to determine the duty using edge capture mode, please explain that also..

[Robin_Shen]

Hi ABHIJITH REJI,

Port Data Input Register (PDIR) can be used to read the logic level of capture pin in FTM IRQ handler.

Best Regards,
Robin
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