#167 Update condition to check if cursor is at the top and bottom.

This change modifies the code to include a check for both top and bottom positions before printing the down arrow.

src/LcdMenu.h

@@ -225,7 +225,7 @@ class LcdMenu {
         //
         // determine if cursor is at the top
         //
-        if (top == 1) {
+        if (top == 1 && bottom == maxRows) {
             //
             // Print the down arrow only
             //

src/MenuItem.h

@@ -193,7 +193,9 @@ class ItemHeader : public MenuItem {
 
     MenuItem** getSubMenu() override { return this->parent; };
 
-    MenuItem* operator[](const uint8_t index) override { return parent[index]; }
+    MenuItem* operator[](const uint8_t index) override {
+        return getSubMenu()[index];
+    }
 };
 
 /**

src/utils/commandProccesors.h

@@ -2,6 +2,22 @@
 #include <Arduino.h>
 
 #ifdef MenuItem_H
+/**
+ * Processes the given command on the LcdMenu object.
+ *
+ * @param menu The LcdMenu object on which the command is to be processed.
+ * @param cmd The command to be processed.
+ * @param upCmd The command for moving up in the menu.
+ * @param downCmd The command for moving down in the menu.
+ * @param enterCmd The command for entering/editing a value.
+ * @param backCmd The command for going back in the menu.
+ * @param leftCmd The command for moving left in the menu.
+ * @param rightCmd The command for moving right in the menu.
+ *
+ * @return true if the command is consumed, false otherwise.
+ *
+ * @throws None
+ */
 bool processCommand(LcdMenu& menu, byte cmd, byte upCmd, byte downCmd,
                     byte enterCmd, byte backCmd, byte leftCmd, byte rightCmd) {
     if (cmd == upCmd) {