feat(simple_menu): Make scroll buttons configurable

Documentation/card10-cfg.rst

@@ -48,4 +48,6 @@ Option name        Type       Description
 ``ble_mac``        Boolean    MAC address used for BLE. Format: ``ca:4d:10:xx:xx:xx``.
 ------------------ ---------- -----------
 ``ble_log_enable`` Boolean    Activate HCI level logging of BLE data. Creates a new btsnoop compatible log file named ``ble.log`` in the ``logs`` folder after each boot if BLE is activated. Keeps the last 10 files.
+------------------ ---------- -----------
+``right_scroll``   Boolean    Use both right buttons to scroll up and down. Lower left button is SELECT.
 ================== ========== ===========

pycardium/modules/py/simple_menu.py

@@ -3,6 +3,7 @@ import color
 import display
 import sys
 import time
+import config
 
 TIMEOUT = 0x100
 """:py:func:`~simple_menu.button_events` timeout marker."""
@@ -193,11 +194,18 @@ class Menu:
         self.idx = 0
         self.select_time = time.time_ms()
         self.disp = display.open()
+        try:
+            right_scroll_str = config.get_string("right_scroll")
+            if right_scroll_str.lower() in ["true", "1"]:
+                right_buttons_scroll = True
+        except OSError:
+            right_buttons_scroll = self.right_buttons_scroll
+
         self.button_scroll_up = (
-            buttons.TOP_RIGHT if self.right_buttons_scroll else buttons.BOTTOM_LEFT
+            buttons.TOP_RIGHT if right_buttons_scroll else buttons.BOTTOM_LEFT
         )
         self.button_select = (
-            buttons.BOTTOM_LEFT if self.right_buttons_scroll else buttons.TOP_RIGHT
+            buttons.BOTTOM_LEFT if right_buttons_scroll else buttons.TOP_RIGHT
         )
 
     def entry2name(self, value):