DevHeads IoT Integration Server•17mo ago

GPIO Pin Configuration Error for DHT22 on AVR32UC with Zephyr OS

@Dark AI Earlier, I added the pinmux settings and ensured they were included in the board's DTS file. The updated configuration looked like this:

&pio {
    pinmux_dht22: pinmux_dht22 {
        pins = <AVR32_PIN_PB02 GPIO_FUNC>;
    };
};

&gpio0 {
    status = "okay";
    dht22_pin: dht22_pin {
        gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
    };
};

&pio {
    pinmux_dht22: pinmux_dht22 {
        pins = <AVR32_PIN_PB02 GPIO_FUNC>;
    };
};

&gpio0 {
    status = "okay";
    dht22_pin: dht22_pin {
        gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
    };
};

Despite these changes, I’m still encountering the same error when configuring the GPIO pin.

#include <zephyr.h>
#include <device.h>
#include <drivers/gpio.h>

#define DHT22_PIN 2
#define GPIO_PORT DT_LABEL(DT_NODELABEL(gpio0))

const struct device *gpio_dev;

void main(void)
{
    printk("Starting DHT22 sensor integration\n");

    gpio_dev = device_get_binding(GPIO_PORT);
    if (!gpio_dev) {
        printk("Failed to bind GPIO device: %s\n", GPIO_PORT);
        return;
    } else {
        printk("Successfully bound to GPIO device: %s\n", GPIO_PORT);
    }

    int ret = gpio_pin_configure(gpio_dev, DHT22_PIN, GPIO_INPUT);
    if (ret < 0) {
        printk("Failed to configure GPIO pin %d, error: %d\n", DHT22_PIN, ret);
    } else {
        printk("Successfully configured GPIO pin %d\n", DHT22_PIN);
    }
}

#include <zephyr.h>
#include <device.h>
#include <drivers/gpio.h>

#define DHT22_PIN 2
#define GPIO_PORT DT_LABEL(DT_NODELABEL(gpio0))

const struct device *gpio_dev;

void main(void)
{
    printk("Starting DHT22 sensor integration\n");

    gpio_dev = device_get_binding(GPIO_PORT);
    if (!gpio_dev) {
        printk("Failed to bind GPIO device: %s\n", GPIO_PORT);
        return;
    } else {
        printk("Successfully bound to GPIO device: %s\n", GPIO_PORT);
    }

    int ret = gpio_pin_configure(gpio_dev, DHT22_PIN, GPIO_INPUT);
    if (ret < 0) {
        printk("Failed to configure GPIO pin %d, error: %d\n", DHT22_PIN, ret);
    } else {
        printk("Successfully configured GPIO pin %d\n", DHT22_PIN);
    }
}

#include <zephyr.h>
#include <device.h>
#include <drivers/gpio.h>

#define DHT22_PIN 2
#define GPIO_PORT DT_LABEL(DT_NODELABEL(gpio0))

const struct device *gpio_dev;

void main(void)
{
    printk("Starting DHT22 sensor integration\n");

    gpio_dev = device_get_binding(GPIO_PORT);
    if (!gpio_dev) {
        printk("Failed to bind GPIO device: %s\n", GPIO_PORT);
        return;
    } else {
        printk("Successfully bound to GPIO device: %s\n", GPIO_PORT);
    }

    int ret = gpio_pin_configure(gpio_dev, DHT22_PIN, GPIO_INPUT | GPIO_PULL_UP);
    if (ret < 0) {
        printk("Failed to configure GPIO pin %d, error: %d\n", DHT22_PIN, ret);
    } else {
        printk("Successfully configured GPIO pin %d\n", DHT22_PIN);
    }
}

#include <zephyr.h>
#include <device.h>
#include <drivers/gpio.h>

#define DHT22_PIN 2
#define GPIO_PORT DT_LABEL(DT_NODELABEL(gpio0))

const struct device *gpio_dev;

void main(void)
{
    printk("Starting DHT22 sensor integration\n");

    gpio_dev = device_get_binding(GPIO_PORT);
    if (!gpio_dev) {
        printk("Failed to bind GPIO device: %s\n", GPIO_PORT);
        return;
    } else {
        printk("Successfully bound to GPIO device: %s\n", GPIO_PORT);
    }

    int ret = gpio_pin_configure(gpio_dev, DHT22_PIN, GPIO_INPUT | GPIO_PULL_UP);
    if (ret < 0) {
        printk("Failed to configure GPIO pin %d, error: %d\n", DHT22_PIN, ret);
    } else {
        printk("Successfully configured GPIO pin %d\n", DHT22_PIN);
    }
}