Unable to set GPIO P0.17 as GPIO OUT pin.

Question

Hi , 
 
 I tried following steps to configure and toggle GPIO pins. 
 I have also set CONFIG_GPIO=y i n your prj.conf file. ,referring to https://devzone.nordicsemi.com/f/nordic-q-a/44940/simple-gpio-example---nrf9160-dk-2 
 static void led_test(void)
{

int cnt = 0;
struct device *dev;

 dev = device_get_binding("GPIO_0");
 /* Set LED pin as output */
 gpio_pin_configure(dev, 2, GPIO_OUTPUT); //p0.03 == LED2
 gpio_pin_configure(dev, 3, GPIO_OUTPUT); //p0.04 == LED3
 gpio_pin_configure(dev, 4, GPIO_OUTPUT); //p0.03 == LED2
 gpio_pin_configure(dev, 5, GPIO_OUTPUT); //p0.04 == LED3
 gpio_pin_configure(dev, 17, GPIO_OUTPUT_ACTIVE); //p0.17
 gpio_pin_configure(dev, 18, GPIO_OUTPUT); //p0.18
 gpio_pin_configure(dev, 19, GPIO_OUTPUT_ACTIVE); //p0.19



 while (1)
 {
 /* Set pin to HIGH/LOW every 1 second */
 gpio_pin_set_raw(dev, 2, cnt % 2); //p0.03 == LED2
 gpio_pin_set_raw(dev, 3, cnt % 2); //p0.04 == LED3
 gpio_pin_set_raw(dev, 4, cnt % 2); //p0.03 == LED2
 gpio_pin_set_raw(dev, 5, cnt % 2); //p0.04 == LED3
 gpio_pin_set_raw(dev, 17, cnt % 2); //p0.17 Toggling pin 17
 gpio_pin_set_raw(dev, 18, cnt % 2); //18
 gpio_pin_set_raw(dev, 19, cnt % 2); //19
 cnt++;
 
 
 k_sleep(K_MSEC(5000));
 }

}



 
 The Led1,2,3,4 will on/off in 5s, but P0.17 P0.18 P0.19 didnt change !! 
 Something else do we need to setup? 
 Do we have to make changes in dts file?

JONATHAN LL · Accepted Answer

P017 ,18 and 19 is often used for SPI3.

&spi3 {
	compatible = "nordic,nrf-spim";
	status = "okay";
	sck-pin = <19>;
	mosi-pin = <18>;
	miso-pin = <17>;
};

In the nrf9160dk_nrf9160_common.dts file you can se that they are used.

You can change this in a .overlay file. You dont have to change the dts file.

Regards,
Jonathan

Unable to set GPIO P0.17 as GPIO OUT pin.

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