[X7] Hardware menu navigation fix (last line) + some TODO removed

radio/src/gui/gui_common.cpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) OpenTX
+ *
+ * Based on code named
+ *   th9x - http://code.google.com/p/th9x
+ *   er9x - http://code.google.com/p/er9x
+ *   gruvin9x - http://code.google.com/p/gruvin9x
+ *
+ * License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "opentx.h"
+
+#if defined(PCBTARANIS) || defined(PCBHORUS) || defined(PCBFLAMENCO)
+uint8_t switchToMix(uint8_t source)
+{
+  div_t qr = div(source-1, 3);
+  return qr.quot+MIXSRC_FIRST_SWITCH;
+}
+#else
+uint8_t switchToMix(uint8_t source)
+{
+  if (source <= 3)
+    return MIXSRC_3POS;
+  else
+    return MIXSRC_FIRST_SWITCH - 3 + source;
+}
+#endif