Heljarinnar breytingar til þess að laga nokkra hluti í part 1.

src/digital_in.cpp

@@ -1,17 +1,8 @@
-//#include <avr/io.h>
 #include "digital_in.h"
 
+#include <errno.h>
 #include <zephyr/devicetree.h>
-
-// Digital_in::Digital_in(uint8_t pin) : pin_mask(1<<pin) {}
-
-// void Digital_in::init() {
-//     DDRD  &= ~pin_mask;
-//     PORTD |=  pin_mask;
-// }
-
-// bool Digital_in::is_hi() { return PIND & pin_mask; }
-// bool Digital_in::is_lo() { return !is_hi(); }
+#include <zephyr/sys/util.h>
 
 static const struct gpio_dt_spec encoder_c1_gpio =
     GPIO_DT_SPEC_GET(DT_ALIAS(encoder_c1), gpios);
@@ -62,3 +53,22 @@ bool Digital_in::is_lo()
     return !is_hi();
 }
 
+int Digital_in::enable_rising_edge_interrupt(
+    struct gpio_callback *callback,
+    gpio_callback_handler_t handler)
+{
+    if (gpio == nullptr || !gpio_is_ready_dt(gpio)) {
+        return -ENODEV;
+    }
+
+    gpio_init_callback(callback, handler, BIT(gpio->pin));
+
+    const int ret = gpio_add_callback(gpio->port, callback);
+    if (ret < 0) {
+        return ret;
+    }
+
+    // Physical rising edge, independent of the active level in the overlay.
+    return gpio_pin_interrupt_configure(
+        gpio->port, gpio->pin, GPIO_INT_EDGE_RISING);
+}