GPIO Configuration Issue

[LaVoute974]

Hi ! This is probably a dumb question but I need some help : I'm trying to simply blink an LED on my STM32L073 board. The LED is connected to the PB6 pin here's my code :

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

void main(void)
{
    const struct device *dev;
    dev = device_get_binding("GPIOB");
    gpio_pin_configure(dev,6,GPIO_OUTPUT);
    while(1){
        gpio_pin_set(dev,6,1);
        k_msleep(1000);
        gpio_pin_set(dev,6,0);
        k_msleep(1000);
    }
} 

I'm using platformio with Zephyr RTOS framework
In prj.conf I do have :
CONFIG_GPIO=y
In zephyr.dts, for gpiob the label is well GPIOB so I don't understand what is wrong here, so if anyone can help me it would be great :)

[stephanosio]

cc @erwango

[ndrs-pst]

@LaVoute974, it turns out the actual device name is "gpio@50000400".
This issue seems to be related to the one discussed in this Stack Overflow thread: Cannot get device binding in Zephyr,
where similar challenges in device binding in Zephyr are addressed.

By the way, using DT_NODELABEL(...) to get a node identifier is the way to go.