RE: Basic GPIO usage

nordicuser91 — Fri, 29 Nov 2019 09:39:48 GMT

Thanks for help. I think the GPIO peripheral requires some time to update the values on the register.

RE: Basic GPIO usage

Honey — Fri, 29 Nov 2019 05:28:07 GMT

Hi,

You have to add one extra delay to see the change.

#include "nrf.h"
#include "nrf_gpio.h"
#include "nrf_delay.h"

#define LED1_PIN 13

int main (void)
{
   nrf_gpio_cfg_output(LED1_PIN);
   nrf_gpio_pin_clear(LED1_PIN);
   while(1)
   {
       nrf_gpio_pin_set(LED1_PIN);
       nrf_delay_ms(1000);
       nrf_gpio_pin_clear(LED1_PIN);
       nrf_delay_ms(1000);
   }
}

Regards

Honey