Enable setting the clock time via keyboard

keyboard.c

@@ -0,0 +1,38 @@
+#include <avr/io.h>
+#include "keyboard.h"
+#include "debounce.h"
+#include "rtc.h"
+#include "led.h"
+
+uint8_t k_inc_hour, k_inc_minute, k_inc_second;
+
+void inc_hour(void)
+{
+  led_hour = (led_hour + 1) % 24;
+  rtc_set_time(HOUR, led_hour);
+}
+
+void inc_minute(void)
+{
+  led_minute = (led_minute + 1) % 60;
+  rtc_set_time(MINUTE, led_minute);
+}
+
+void inc_second(void)
+{
+  led_second = (led_second + 1) % 60;
+  rtc_set_time(SECOND, led_second);
+}
+
+void keyboard_init(void)
+{
+  KEYBOARD_DIR &= ~(KEY_INC_HOUR | KEY_INC_MINUTE | KEY_INC_SECOND);
+  PORTB |= KEY_INC_HOUR | KEY_INC_MINUTE | KEY_INC_SECOND;
+}
+
+void keyboard_handle_input(void)
+{
+  SuperDebounce(&k_inc_hour, &KEYBOARD_PIN, KEY_INC_HOUR, 20, 500, &inc_hour, &inc_hour);
+  SuperDebounce(&k_inc_minute, &KEYBOARD_PIN, KEY_INC_MINUTE, 20, 500, &inc_minute, &inc_minute);
+  SuperDebounce(&k_inc_second, &KEYBOARD_PIN, KEY_INC_SECOND, 20, 500, &inc_second, &inc_second);
+}