Interrupts on third-party board.

Question

Hello! 
 I am currently working with Actinius' Icarus IoT board and I'm trying to get the interrupts to work. This is the boards' pin layout: At the moment I have connected the 0 pin to a button and the 1 pin to a LED. My goal is to make the button trigger an interrupt that executes a function and turns on the LED light. I have seen the blinky example and tried to modify it with little success. I know that my "problem" is rather vague and is more a lack of skill and knowledge than a dysfunction with the board or the library. However, I cannot make it work and I would like just a pinpoint of where I have to start. Maybe I'm including the wrong library, using the wrong functions, or having the definitions all messed up. I appreciate your time and help, thank you in advance!

Øivind · Accepted Answer

Hi again, I see that I forgot to add aliases. Try this: overlay: / { buttons { button1: button_1 { gpios = <&gpio0 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>; label = "Push Button 2"; }; }; leds { button_led: led_3 { gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; label = "Button LED"; }; }; aliases { led3 = &button_led; sw1 = &button1; }; }; main.c changes: /* * Get button configuration from the devicetree sw0 alias. This is mandatory. */ #define SW1_NODE DT_ALIAS(sw1) #if !DT_NODE_HAS_STATUS(SW1_NODE, okay) #error "Unsupported board: sw1 devicetree alias is not defined" #endif static const struct gpio_dt_spec button = GPIO_DT_SPEC_GET_OR(SW1_NODE, gpios, {0}); static struct gpio_callback button_cb_data; /* * The led0 devicetree alias is optional. If present, we'll use it * to turn on the LED whenever the button is pressed. */ static struct gpio_dt_spec led = GPIO_DT_SPEC_GET_OR(DT_ALIAS(led3), gpios, {0}); Let me know how that works.

Interrupts on third-party board.

Top Replies