Fixing not working buttons.

MicroMDAEPiano.ino

@@ -119,6 +119,9 @@ void setup()
 {
   //while (!Serial) ; // wait for Arduino Serial Monitor
 
+  pinMode(BUT_L_PIN, INPUT_PULLUP);
+  pinMode(BUT_R_PIN, INPUT_PULLUP);
+
   menu_init();
 
   lcd.clear();

UI.hpp

@@ -36,6 +36,8 @@ extern Bounce but[2];
 // Global vars
 uint8_t main_menu_selector = 0;
 
+enum { BUT_L, BUT_R };
+
 // Main menu
 const char text10[] PROGMEM = "Favorites      ";
 const char text11[] PROGMEM = "Sound          ";
@@ -60,8 +62,14 @@ LiquidLine sound_line4(0, 1, text23);
 LiquidScreen sound_screen(sound_line1, sound_line2, sound_line3, sound_line4);
 LiquidMenu sound_menu(lcd, sound_screen);
 
+// Info menu
+const char text40[] PROGMEM = "INFO    ";
+LiquidLine info_line1(0, 0, text40);
+LiquidScreen info_screen(info_line1);
+LiquidMenu info_menu(lcd, info_screen);
+
 // System menu
-LiquidSystem menu_system(main_menu, sound_menu);
+LiquidSystem menu_system(main_menu, sound_menu, info_menu);
 
 void callback_favorites_function() {
   Serial.println(F("callback_favorites_function"));
@@ -122,11 +130,13 @@ void handle_ui(void)
 
     switch (i)
     {
-      case 1:
-        if (but[i].risingEdge() || but[i].fallingEdge())
+      case BUT_R: // SELECT
+        if (but[i].fallingEdge())
         {
-          Serial.println(F("B0"));
-          main_menu.switch_focus();
+#ifdef DEBUG
+          Serial.println(F("SELECT-R"));
+#endif
+          menu_system.next_screen();
         }
         break;
     }