4 replies

Failed to Add GPIO Callback on AVR32UC Microcontroller

Hi everyone, I'm working on setting up an interrupt handler on my AVR32UC microcontroller, but I'm encountering an issue where the interrupt configuration fails.
my setup:

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

#define GPIO_PIN 15
#define GPIO_PORT "GPIO_0"

void gpio_callback(const struct device *dev, struct gpio_callback *cb, uint32_t pins) {
    printk("Interrupt triggered!\n");
}

void main(void) {
    const struct device *dev = device_get_binding(GPIO_PORT);
    gpio_pin_interrupt_configure(dev, GPIO_PIN, GPIO_INT_EDGE_TO_ACTIVE);
    gpio_init_callback(&my_cb, gpio_callback, BIT(GPIO_PIN));
    gpio_add_callback(dev, &my_cb);
}

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

#define GPIO_PIN 15
#define GPIO_PORT "GPIO_0"

void gpio_callback(const struct device *dev, struct gpio_callback *cb, uint32_t pins) {
    printk("Interrupt triggered!\n");
}

void main(void) {
    const struct device *dev = device_get_binding(GPIO_PORT);
    gpio_pin_interrupt_configure(dev, GPIO_PIN, GPIO_INT_EDGE_TO_ACTIVE);
    gpio_init_callback(&my_cb, gpio_callback, BIT(GPIO_PIN));
    gpio_add_callback(dev, &my_cb);
}

The error I'm encountering:

error: Failed to add GPIO callback

error: Failed to add GPIO callback

I've confirmed that interrupt support is enabled in the

prj.conf

prj.conf

file. Does anyone have suggestions on how to fix this?

Solution

hey @Sterling I had fixed the issue, I made sure to define and initialize the

struct gpio_callback my_cb

struct gpio_callback my_cb

before using it in

gpio_init_callback

gpio_init_callback

. I also added some error handling for functions like

device_get_binding

device_get_binding

gpio_pin_interrupt_configure

gpio_pin_interrupt_configure

, and

gpio_add_callback

gpio_add_callback

. These adjustments helped to correctly set up the GPIO interrupt, so now the callback function triggers as expected when the GPIO pin detects an edge. thanks buddy

Jump to solution

Failed to Add GPIO Callback on AVR32UC Microcontroller

Hi everyone, I'm working on setting up an interrupt handler on my AVR32UC microcontroller, but I'm encountering an issue where the interrupt configuration fails.
my setup:

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

#define GPIO_PIN 15
#define GPIO_PORT "GPIO_0"

void gpio_callback(const struct device *dev, struct gpio_callback *cb, uint32_t pins) {
    printk("Interrupt triggered!\n");
}

void main(void) {
    const struct device *dev = device_get_binding(GPIO_PORT);
    gpio_pin_interrupt_configure(dev, GPIO_PIN, GPIO_INT_EDGE_TO_ACTIVE);
    gpio_init_callback(&my_cb, gpio_callback, BIT(GPIO_PIN));
    gpio_add_callback(dev, &my_cb);
}

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

#define GPIO_PIN 15
#define GPIO_PORT "GPIO_0"

void gpio_callback(const struct device *dev, struct gpio_callback *cb, uint32_t pins) {
    printk("Interrupt triggered!\n");
}

void main(void) {
    const struct device *dev = device_get_binding(GPIO_PORT);
    gpio_pin_interrupt_configure(dev, GPIO_PIN, GPIO_INT_EDGE_TO_ACTIVE);
    gpio_init_callback(&my_cb, gpio_callback, BIT(GPIO_PIN));
    gpio_add_callback(dev, &my_cb);
}

The error I'm encountering:

error: Failed to add GPIO callback

error: Failed to add GPIO callback

I've confirmed that interrupt support is enabled in the

prj.conf

prj.conf

file. Does anyone have suggestions on how to fix this?

Solution

hey @Sterling I had fixed the issue, I made sure to define and initialize the

struct gpio_callback my_cb

struct gpio_callback my_cb

before using it in

gpio_init_callback

gpio_init_callback

. I also added some error handling for functions like

device_get_binding

device_get_binding

gpio_pin_interrupt_configure

gpio_pin_interrupt_configure

, and

gpio_add_callback

gpio_add_callback

. These adjustments helped to correctly set up the GPIO interrupt, so now the callback function triggers as expected when the GPIO pin detects an edge. thanks buddy

Jump to solution

Failed to Add GPIO Callback on AVR32UC Microcontroller

Failed to Add GPIO Callback on AVR32UC Microcontroller

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