How to add GPIO for port 1 on ncs v2.4.0?

[snowuyl]

I see the leds node in C:\ncs\v2.4.0\zephyr\boards\arm\nrf5340dk_nrf5340\nrf5340_cpuapp_common.dts file.

leds {
		compatible = "gpio-leds";
		led0: led_0 {
			gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
			label = "Green LED 0";
		};
		led1: led_1 {
			gpios = <&gpio0 29 GPIO_ACTIVE_LOW>;
			label = "Green LED 1";
		};
		led2: led_2 {
			gpios = <&gpio0 30 GPIO_ACTIVE_LOW>;
			label = "Green LED 2";
		};
		led3: led_3 {
			gpios = <&gpio0 31 GPIO_ACTIVE_LOW>;
			label = "Green LED 3";
		};
	};

If I want to add led4 for port 1, pin 09, how can I add it?

[Maria Gilje]

Hello,

See the nRF Connect SDK fundamentals on devicetree here.

Also note that the nRF5340 DK has 4 LEDs (with node labels led0 - led3). If you want to use more LEDs you need custom hardware.

Best regards,

Maria

[snowuyl]

Thanks for your reply! I am using custom hardware. Is the following description correct for led4 using port 1, pin 09.

led4: led_4 {
gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
label = "Green LED 4";
};

[Maria Gilje]

Hello,

This looks correct.

Best regards,

Maria