topic Re: How to Set System Clock Gating Control Register GPIO for freedom MKE06z? in Kinetis Microcontrollers

How to Set System Clock Gating Control Register GPIO for freedom MKE06z?

jefersonip — Mon, 21 Dec 2015 14:32:49 GMT

I did not find in the documentation of this microcontroller setting the System Clock Gating Control Register for GPIO,

Can someone help me.

Thanks,

Re: How to Set System Clock Gating Control Register GPIO for freedom MKE06z?

mjbcswitzerland — Tue, 22 Dec 2015 19:18:17 GMT

There is no clock gating register for GPIO in the KE parts. That is, there is nothing that needs to be done before using the GPIO.

Regards

Mark

Re: How to Set System Clock Gating Control Register GPIO for freedom MKE06z?

jefersonip — Tue, 22 Dec 2015 23:18:22 GMT

Thank you, you are correct.

Test the code below and it worked.

#include "MKE06Z4.h"

// GPIOB/FGPIOB pins 21, 22, 23

#define LED_C_RED 0x200000

#define LED_C_GREEN 0x400000

#define LED_C_BLUE 0x800000

int i = 0, j = 0;

int main(void)

{

// Configure with output direct

FGPIOB->PDDR |= LED_C_RED | LED_C_GREEN | LED_C_BLUE;

// Set all leds with off

FGPIOB->PDOR |= LED_C_RED | LED_C_GREEN | LED_C_BLUE;

for (;;) {

// Port toggle output

FGPIOB->PTOR |= LED_C_RED;

for(i = 0; i < 30000; i++){

for(j = 0; j < 100; j++);

}

return 0;

}

Merry Christmas!!!

Re: How to Set System Clock Gating Control Register GPIO for freedom MKE06z?

tomsparks — Sun, 09 Oct 2016 20:50:22 GMT

It appears that the the KEA series needs no special clock configuration for the GPIO either. I have not found anything in the reference manual that let's a person select a clock to the port for using GPIO on a particular pin. It apparently just needs the GPIOx_ registers configured. Can you confirm whether this really is the case for the KEA series as well?

Re: How to Set System Clock Gating Control Register GPIO for freedom MKE06z?

mjbcswitzerland — Sun, 09 Oct 2016 21:21:41 GMT

KEA and KE are equivalent in many ways - GPIOs are always clocked.

Regards

Mark