GPIO Interrupt example for NCS1.9.1

[yoyou]

Hello,

NCS1.9.1, nRF52840DK,  Windows10 X64,  VS Code, 

i want to use P0.31 as gpio interrupt pin,

anyone know how to do it ?

void device_irq_callback(const struct device *port,struct gpio_callback *cb,gpio_port_pins_t pins)
{
}
void init_gpio_interrupt(void)
{
	#define GPIO(id) DT_NODELABEL(gpio##id)
	const struct device *gpio_31 = device_get_binding(DT_LABEL(GPIO(31)));
	// const struct device *gpio_31 = device_get_binding(DT_LABEL(DT_NODELABEL(gpio31)));

	gpio_pin_configure(gpio_31, 31, GPIO_INPUT | GPIO_PULL_UP);//IRQ_GPIO_FLAGS
	gpio_pin_interrupt_configure(gpio_31, 31, GPIO_INT_EDGE_BOTH);
	struct gpio_callback callback;
	gpio_init_callback(&callback, device_irq_callback, BIT(31));    
	gpio_add_callback(gpio_31, &callback);
}

if config to overlay file like follow,it show unkonw label.

thanks 

Best Regards

[Priyanka]

Hi,

You can only define as &gpio0 or &gpio1 depending on which port you prefer, i.e. 0 for port 0 and 1 for port1. If you wish to use the P0.31, you could say, enable the &gpio0 and give the pin number as 31.

In addition, you can also use the Interrupt configuration flags if you wish.

Regards,

Priyanka

[yoyou]

Hi,

thanks for reply,

by your cue, my i write it wrong?

thanks 

Best Regards

[Priyanka]

Hi,

Is it possible to share your overlay file?

-Priyanka

[yoyou]

Hi,

thanks for reply,

2133.nrf52840dk_nrf52840.overlay

	const struct device *int1GpioDevice = device_get_binding(
		DT_LABEL(DT_PHANDLE(DT_NODELABEL(da217gpio), int1_gpio)));            
	int int1Pin = DT_PROP(DT_NODELABEL(da217gpio), int1_pin);
	gpio_pin_configure(int1GpioDevice, int1Pin, GPIO_INPUT | GPIO_PULL_DOWN);
	gpio_pin_interrupt_configure(int1GpioDevice, int1Pin, GPIO_INT_EDGE_RISING);	                        
	struct gpio_callback callback;
	gpio_init_callback(&callback, device_irq_callback, BIT(int1Pin));    
	int ret = gpio_add_callback(int1GpioDevice, &callback);

  

Best Regards