topic How write a function which change frequency every 100hz by using sw2 and sw3 buttons? nxps32k144evb in S32K

How write a function which change frequency every 100hz by using sw2 and sw3 buttons? nxps32k144evb

miketorres — Tue, 09 Nov 2021 14:18:28 GMT

Hi,

I have program from example application - ftm_pwm_s32k144. I set frequency at 1000HZ in flexTimer. I would like to change frequency every 100HZ by using Sw2 and SW3 buttons. How Can i do it? I defined in my program this buttons and what should I do next? Could you help me, do you have similar code or advice?

Regards

Mike

Re: How write a function which change frequency every 100hz by using sw2 and sw3 buttons? nxps32k144

Senlent — Wed, 10 Nov 2021 03:20:52 GMT

Hi@miketorres

Hi, Mike

I give you a hint.

1.How to change PWM frequency?

please refer to example "ftm_signal_measurement_s32k144 "

2.How to use SW1 or SW2.

please refer to example "power_mode_switch_s32k144"

In this example,SW3 was used to wake up the CPU from power mode.

/* Interrupt service routine for SW3 */ void ButtonISR(void) { /* Clear button IRQ flag */ PINS_DRV_ClearPortIntFlagCmd(PORTC); }

or you just keep reading SW(I/O) status without using interrupt.

pins_channel_type_t PINS_DRV_ReadPins(const GPIO_Type * const base)

BR!

Jim,

Re: How write a function which change frequency every 100hz by using sw2 and sw3 buttons? nxps32k144

miketorres — Fri, 12 Nov 2021 11:50:43 GMT

Hi,

what's wrong with this code? Could you help me? Where are mistakes? I don't understand. I would like to this code generate digital square signal - 1000hz frequency. By using sw2 and sw3 buttons I would like to change frequency. If I pushed once for example sw2 button frequency should increase about 100HZ. Could you correct my mistake in this code? I will be very grateful.

Re: How write a function which change frequency every 100hz by using sw2 and sw3 buttons? nxps32k144

Senlent — Mon, 15 Nov 2021 02:56:51 GMT

Hi@miketorres

I have answered you under your other questions.

BR!

Jim,

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