Update repo

apps/05_button_exti_irq/src/main.c

@@ -0,0 +1,66 @@
+#include <zephyr/kernel.h>
+#include <zephyr/device.h>
+#include <zephyr/devicetree.h>
+#include <zephyr/sys/printk.h>
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/drivers/uart.h>
+#include <zephyr/drivers/adc.h>
+
+
+#if !DT_NODE_HAS_STATUS(DT_ALIAS(sw0), okay)
+#error "Board does not define alias sw0. Add a boad overlay"
+#endif
+
+static const struct gpio_dt_spec button = 
+    GPIO_DT_SPEC_GET(DT_ALIAS(sw0), gpios); 
+
+static struct gpio_callback button_cb;
+
+
+static void button_isr(const struct device *port, 
+                       struct gpio_callback *cb, 
+                       gpio_port_pins_t pins)
+{
+    ARG_UNUSED(port);
+    ARG_UNUSED(pins);
+    ARG_UNUSED(cb);
+
+    // Do something
+    int v = gpio_pin_get_dt(&button);
+    
+    if(v >= 0) {
+        printk("[IRQ] Button state: %s\r\n", v ? "ACTIVE" : "INVACTIVE");
+    }
+
+}
+
+
+int main(void)
+{
+    if(!device_is_ready(button.port)) {
+        return 0;
+    }
+
+    if(gpio_pin_configure_dt(&button, GPIO_INPUT) != 0) {
+        return 0;
+    }
+
+    // Set up callback and register it
+    gpio_init_callback(&button_cb, button_isr, BIT(button.pin));
+    gpio_add_callback(button.port, &button_cb);
+
+
+    if(gpio_pin_interrupt_configure_dt(&button, GPIO_INT_EDGE_BOTH) != 0) {
+        return 0;
+    }
+
+    printk("\r\n[EXTI] Button pin interrupt is ready. Press button\r\n");
+
+	while (1) {
+
+		k_sleep(K_FOREVER);
+
+	}
+
+	return 0;
+}