Nýtt branch og kóðar plús breytingar á fyrri kóðum fyrir part 4

src/pre_operational_state.cpp

@@ -0,0 +1,66 @@
+#include "pre_operational_state.h"
+#include "motor_controller.h"
+
+#include <Arduino.h>
+
+PreOperationalState::PreOperationalState()
+    : previous_time(0),
+      led_state(false)
+{
+}
+
+void PreOperationalState::enter()
+{
+    Serial.println("State: Pre-operational");
+
+    context->stop_motor();
+
+    context->led_off();
+
+    led_state = false;
+
+    previous_time = millis();
+}
+
+void PreOperationalState::update()
+{
+    unsigned long current_time = millis();
+
+    if (current_time - previous_time >= 500)
+    {
+        previous_time = current_time;
+
+        led_state = !led_state;
+
+        if (led_state)
+        {
+            context->led_on();
+        }
+        else
+        {
+            context->led_off();
+        }
+    }
+}
+
+void PreOperationalState::command(char c)
+{
+    if (c == 'o' || c == 'O')
+    {
+        Serial.println("Command: set operational");
+
+        context->to_operational();
+    }
+
+    else if (c == 'r' || c == 'R')
+    {
+        Serial.println("Command: reset");
+
+        context->to_initialization();
+    }
+}
+
+void PreOperationalState::exit()
+{
+    context->led_off();
+}