Using Grove LED Socke Kit with nrf9160 DK

RE: Using Grove LED Socke Kit with nrf9160 DK

Hakon — Mon, 22 Jun 2020 08:17:41 GMT

[quote user="Remo94"]Now I tried to bind the LED with the following code: [/quote]

I'm not sure if the LED driver works for nrf91. As I said, the Zephyr blinky example is a good place to start. It shows how to interface with the LEDs on the DK directly using GPIO. It can be located in zephyr/samples/basic/blinky in the NCS installation.

RE: Using Grove LED Socke Kit with nrf9160 DK

Remo94 — Fri, 19 Jun 2020 16:47:59 GMT

Hi. Thanks for your answer.

So I have the following overlay file. The grove light and bme sensor are working.

&i2c2 {
    compatible = "nordic,nrf-twim";
	status = "okay";
	sda-pin = < 30 >;
	scl-pin = < 31 >;
    clock-frequency = <I2C_BITRATE_STANDARD>;  
	
	/* The I2C address could be one of two, here 0x76 is assumed */
	bme280@77 {
		compatible = "bosch,bme280";
		reg = <0x77>;
		label = "BME280";
	};
};

/ {
	gls {
		label = "GLS";
		compatible = "grove,light";
		io-channels = <&adc 0>;
	};

    led {
		label = "LED1";
		compatible = "grove,led_socket";
		io-channels = <&adc 1>;
	};

};

Now I tried to bind the LED with the following code:

    struct device *led;
	led = device_get_binding("LED1");

	if (led == NULL) {
		printf("led device not found.  aborting test.\n");
		return;
	}

It always prints "led device not found". Do I use the wrong port?

Kind regards.

RE: Using Grove LED Socke Kit with nrf9160 DK

Hakon — Fri, 19 Jun 2020 11:21:45 GMT

Hello,

can you explain how you set up the hardware and also what code you are running on the nrf9160? There are plenty of samples that use LEDs, like the Zephyr blinky example, but they are configured to use the DK LEDs, so you would likely need to change the GPIO pins to the ones that your board uses.