S32 SDKのトピックRe: S32K14x frequency requirement

S32K14x frequency requirement

Mohit_Manvar — Mon, 23 Oct 2023 13:13:33 GMT

Hello experts,

I am using the S32K342EVB board. In which I am using FTM_PWM for PWM output generation. My Core frequency is 48 Mhz.

I want 6.144MHz frequency but getting 6.87MHz.

below is reference of configuration.

Help me to get required frequency.

VaneB — Wed, 25 Oct 2023 21:44:23 GMT

Could you share your clock configurations and an image of your PWM showing the frequency?

B.R.

VaneB

Mohit_Manvar — Thu, 26 Oct 2023 04:00:25 GMT

please find screenshots below:

Clock Configuration

Frequency snapshot

Note: I am using S32 design studio for developing pwm freq.

peripheral -> FTM_PWM

VaneB — Mon, 30 Oct 2023 22:11:38 GMT

If you decrease the expected frequency, it has the same behavior?

Also, how are you measuring the signal?

Mohit_Manvar — Tue, 31 Oct 2023 08:09:32 GMT

Hello @VaneB,

Yes, I'm facing same issue on decreasing frequency.

I'm not getting exact frequency as per input.

I'm measuring output via oscilloscope by connecting on Headers of eval board.

VaneB — Tue, 31 Oct 2023 22:04:39 GMT

Could you share images of your tests?