GPIO pin configuration

[samuel kapa]

Hi there!

We are using nRF52840DK development kit with nRF-Connect SDK to build a pre-production version of our product.

We need more GPIO configurations for our project. Can we get step by step procedure for GPIO configuration other than predefined GPIO(led1, led2, button1, etc.) names.

It is really critical for us to come up with a solution for this ASAP.
Thanks for the support in advance!

Regards,
Samuel kapa

[samuel kapa]

in #define OUTPUT_PIN 16.

what's 16 means

[Amanda Hsieh]

Hi Samuel, 

It is P0.16. You can also use NRF_GPIO_PIN_MAP(port, pin) with the definition if you want to use a pin on port 1.

-Amanda H.

[samuel kapa]

hi Amanda H,

      here is the sample code i am writing for gpio.

#include <zephyr.h>
#include <device.h>
#include <sys/util.h>
#include <inttypes.h>
#include <devicetree.h>
#include <sys/printk.h>
#include <drivers/pwm.h>
#include <drivers/gpio.h>
#include <nrfx/hal/nrf_gpio.h>

//#define SLEEP_TIME_MS 3000

#define OUTPUT_PIN 15

void main(void)
{
    nrf_gpio_cfg_output(OUTPUT_PIN);
   

    while (1) {
                   nrf_gpio_pin_set(OUTPUT_PIN);
                  k_sleep(K_SECONDS(3U));
                  nrf_gpio_pin_clear(OUTPUT_PIN);
                  k_sleep(K_SECONDS(3U));
              }
}

with is pin number 15 or 16, 13, 14. i am getting output.

but if i change the pin number to like 1 or 2. i am not getting any out put but it's uploading to board.

thanks,

samuel kapa.

[Amanda Hsieh]

Hi Samuel, 

Please see the Connector interface of nRF52840DK. I don't think there is P0.02. 

• P0.00 and P0.01 are used for the 32.768 kHz crystal and are not available on the connectors. For more information, see 32.768 kHz crystal.

-Amanda H.

[samuel kapa]

hi Amanda H,

thanks for u r help.

[Amanda Hsieh]

Glad to help. 

-Amanda H.