GPIO configuration code

RE: GPIO configuration code

Jørgen Holmefjord — Mon, 25 Nov 2019 08:44:35 GMT

Use NRF_GPIO_PIN_MAP(port, pin) macro to define the pin, or simply add 32 to the pin number for port 1, i.e., 33 in your example (P1.01).

RE: GPIO configuration code

Luke Galea — Fri, 22 Nov 2019 09:47:10 GMT

How would you go about using the nrf_gpio_cfg_output to configure pin 1.01 for example on the nRF52840?

RE: GPIO configuration code

Sadasivam — Wed, 18 Jan 2017 10:08:41 GMT

Thank you sir. And thanks for your valuable answer

RE: GPIO configuration code

Sadasivam — Wed, 18 Jan 2017 10:07:03 GMT

Thank you sir for your valuable answer.

RE: GPIO configuration code

Roger Clark — Wed, 18 Jan 2017 10:02:37 GMT

To configure a pin as output you just need to use (Assuming your LED is on pin 29)

#define LED_PIN 29

nrf_gpio_cfg_output(LED_PIN);// Set LED PIN pin as output

To set the pin to High , use

nrf_gpio_pin_set(LED_PIN);

to set the pin to low, use

nrf_gpio_pin_clear(LED_PIN);

to toggle the pin use

nrf_gpio_pin_toggle(LED_PIN);

Note. You need to include "nrf_gpio.h"

RE: GPIO configuration code

Jørgen Holmefjord — Wed, 18 Jan 2017 09:57:10 GMT

Hi,

You can configure and control GPIOs using the GPIO abstraction API.

Below is an example of how to toggle LED1 on the nRF52 DK every 1 second:

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

#define LED1_PIN 17

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

You can also have a look at GPIOTE, for more advanced GPIO controlling.

Best regards,

Jørgen