topic how to configure the PWM output signals in S32K432? in S32K

how to configure the PWM output signals in S32K432?

mogilipuri_harish — Wed, 01 Mar 2023 11:32:50 GMT

hello team

1. how to configure the PWM output signals? we need to configure the PWM output signal with 75% duty cycle with 16Khz

2.which pin we can configure for this operation??

Re: how to configure the PWM output signals in S32K432?

VaneB — Wed, 01 Mar 2023 17:45:32 GMT

Hi @mogilipuri_harish

Included in the S32K3 RTD are some examples of configuring a PWM using FlexIO and EMIOS.

B.R.

VaneB

Re: how to configure the PWM output signals in S32K432?

mogilipuri_harish — Thu, 02 Mar 2023 10:05:10 GMT

hello

1.can we generate the 16khz PWM signal with using Output PWM Buffered (OPWMB) pin (eMIOS_0_CH[0]_X) in S32k312 or s32k342?

2. for PWM (16kHZ) output can use GPIO pins?

Re: how to configure the PWM output signals in S32K432?

VaneB — Thu, 02 Mar 2023 19:26:59 GMT

Hi @mogilipuri_harish

eMIOS is clocked by CORE_CLK(up to 160Mhz). eMIOS divides this clock by the global prescaler (MCR[GPRE] + 1) and routes the resulting prescaled clock output to the channel internal prescaler (Cn[UCPRE] + 1). Thus channel internal counter counts (CORE_CLK/global prescaler/internal prescaler) clock.

For example if the channel is running in OPWFMB mode, its PWM frequency is calculated as:

PWM frequency = CORE_CLK / global prescaler / internal prescaler / (B1+1)

Where B1 is the value of the B register.

Please refer to device RM for description of eMIOS modes.

Re: how to configure the PWM output signals in S32K432?

anakha — Mon, 01 Jul 2024 14:01:59 GMT

@VaneB
How could define B1 in RTD?