nRF5340 Audio DK: GPIO P0.07 Not Outputting High?

[arun98475]

Hello, 

    I am trying to make GPIO P0.07 to high, in my nrf5340 Audio DK. Externally I am connecting an LED between P0.07 and GND. But it not showing any voltage between them. below is my code

#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/sys/printk.h>

static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(DT_ALIAS(newpin), testpin_gpios);

int main(void)
{
    int ret;

    if (!gpio_is_ready_dt(&led)) {
        printk("Error: LED device %s is not ready\n", led.port->name);
        return 0;
    }

    ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
    if (ret < 0) {
        printk("Error %d: Failed to configure LED pin\n", ret);
        return 0;
    }

    printk("Setting GPIO HIGH on P0.07\n");

    /* Set GPIO HIGH */
    gpio_pin_set_dt(&led, 1);

    while (1) {
        k_sleep(K_FOREVER); // Keep running
    }
	return 0;
}

My overlay file is 

/ {
	testpin: zephyr,user {
		testpin-gpios = <&gpio0 7 0>;
	};

	aliases {
		newpin = &testpin;
	};
};

&gpio0 {
	status = "okay";
};

&gpiote {
	status = "okay";
};

my config file

CONFIG_PRINTK=y
CONFIG_PWM=y
CONFIG_GPIO=y
CONFIG_LOG=y
CONFIG_PWM_LOG_LEVEL_DBG=y

But the board's inbuilt red led is glowing. 

[saurabh]

Hello Arun can you try blinky example

[arun98475]

that is working fine, here also in built-in led is working. But if i connect an external led in P0.07 and GND it is not working

[arun98475]

When i am adding "

/delete-node/ &pwm0;" 

 

/{
	testpin: zephyr,user {
		testpin-gpios = <&gpio0 7 0>;
	};

	aliases {
		newpin = &testpin;
	};
};

&gpio0 {
	status = "okay";
};

&gpiote {
	status = "okay";
};

/delete-node/ &pwm0;

I am getting error "devicetree error: /pwmleds/pwm_led_0: undefined node label 'pwm0'"

[Edvin]

Yes, you would need to remove all references to pwm0 in your application. It is probably easier to use another pin, instead of the P0.07.

Or alternatively, instead of using /delete-node/, you could move the pin used for pwm_led_0, by adding this to your .overlay file:

&pinctrl {
	pwm0_default: pwm0_default {
		group1 {
			psels = <NRF_PSEL(PWM_OUT0, 0, 8)>,
				<NRF_PSEL(PWM_OUT1, 0, 25)>,
				<NRF_PSEL(PWM_OUT2, 0, 26)>;
		};
	};

	pwm0_sleep: pwm0_sleep {
		group1 {
			psels = <NRF_PSEL(PWM_OUT0, 0, 8)>,
				<NRF_PSEL(PWM_OUT1, 0, 25)>,
				<NRF_PSEL(PWM_OUT2, 0, 26)>;
			low-power-enable;
		};
	};
};

But note that P0.07 will still be physically connected to the LED on the Audio DK.

Also note that I now moved the first PWM channel to pin P0.08, but you can move it to any pin you'd prefer, that is free.

BR,

Edvin

[arun98475]

#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/sys/printk.h>

static const struct gpio_dt_spec spec = GPIO_DT_SPEC_GET(DT_ALIAS(newpin), testpin_gpios);

int main(void)
{
    int ret;

    if (!gpio_is_ready_dt(&spec)) {
        printk("Error: GPIO device %s is not ready\n", spec.port->name);
        return 0;
    }

    ret = gpio_pin_configure_dt(&spec, GPIO_OUTPUT_ACTIVE);
    if (ret < 0) {
        printk("Error %d: Failed to configure GPIO pin\n", ret);
        return 0;
    }

    printk("Setting GPIO HIGH on %d \n",spec.pin);

    /* Set GPIO HIGH */
    gpio_pin_set_dt(&spec, 1);

    while (1) {
        k_sleep(K_FOREVER); // Keep running
    }
	return 0;
}

Above is my code I am not referring any PWM , I tried P0.08 also. But I am not getting any voltage in GPIO. 

[Edvin]

Can you please .zip and upload the entire application folder, so that I can run it on my desk? 

You are building for the target board nrf5340_audio_dk/nrf5340/cpuapp, right? What NCS version are you using?

Best regards,

Edvin

[arun98475]

fade_led_1.rar

My NCS version is 2.9.0. Yes target board is nrf5340 Audio DK