GPIO pin configuration

Question

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

Amanda Hsieh · Answer

Hi Samuel, 
 Not sure what exactly you want to use the GPIO configuration for. 
 This tutorial https://devzone.nordicsemi.com/nordic/nrf-connect-sdk-guides/b/getting-started/posts/nrf-connect-sdk-tutorial---part-2-ncs-v1-4-0 shows how to config GPIO for PWM on nRF9160DK and nRF5340 PDK, but the same concept can apply to nRF52840DK. You also could search for similar use cases on Devzone. 
 If you want to use GPIOs independently from any peripheral, you can also use the nrfx GPIO HAL functions directly in the code without setting .overlay or .config as 
 #include <nrfx/hal/nrf_gpio.h> 

#define OUTPUT_PIN 16

 

void main(void)
{
 nrf_gpio_cfg_output(OUTPUT_PIN);
 nrf_gpio_pin_clear(OUTPUT_PIN);
} 
 -Amanda H.