Getting Started with NCS (NRF Connect SDK) with simple PWMs.

[c.tessierpiart]

Hi,

I trouble the support team for quite a few months now with NRF5 and I am now trying to get started with the up to date SDK and hopefully being able to get along with matter functionnalities.

I am using the SDK on VS Code and I find it a bit troubling how things works with Zephyr. I started on a standard blinky but I can't find any examples using Zephyr for a PWM or interrupt based events. So far my attempts at getting along the new SDK was applying changes in the zephyr.dts file : 

		pwm0: pwm@4001c000 {
			compatible = "nordic,nrf-pwm";
			reg = < 0x4001c000 0x1000 >;
			interrupts = < 0x1c 0x1 >;
			status = "okay";
			label = "PWM_0";
			#pwm-cells = < 0x1 >;
			ch0-pin = < 14 >;
			ch0-inverted;
			ch1-pin = < 15 >;
			ch1-inverted;
			ch2-pin = < 16 >;
			ch3-inverted;
			phandle = < 0x5 >;
		};
		
........................

	pwmleds {
		compatible = "pwm-leds";
		pwm_led0: pwm_led_0 {
			pwms = < &pwm0 14 >;
			label = "Voyant Rouge";
		};
		pwm_led1: pwm_led_1 {
			pwms = < &pwm0 15 >;
			label = "Voyant Vert";
		};
		pwm_led2: pwm_led_2 {
			pwms = < &pwm0 16 >;
			label = "Voyant Bleu";
		};
	};

I am then very concerned about the way to proceed, the blink exemple seems to use deprecated GPIO definitions (device_get_binding()) and I am not able to set up anything easily.

I hope you can make my way into this easier.

Best Regards,

Charles

[c.tessierpiart]

Hi again,

It seems I missed a the exemple related to my needs.I found the basic exemples and I can now interact properly with the board.

However, I am still confused about the right behavior in NCS. Is there a way to modify GPIO without touching the basic configuration ? It doesn't feel right to change this kind of file.

Best regards,

Charles