UIState constants

UI_STATE_BT_ERROR UI_STATE_CONNECT_REQUEST UI_STATE_DRAW_MENU UI_STATE_ENTER_PRESSED UI_STATE_EXECUTE_FILE UI_STATE_EXECUTING_FILE UI_STATE_EXIT_PRESSED UI_STATE_INIT_DISPLAY UI_STATE_INIT_INTRO UI_STATE_INIT_LOW_BATTERY UI_STATE_INIT_MENU UI_STATE_INIT_WAIT UI_STATE_LEFT_PRESSED UI_STATE_LOW_BATTERY UI_STATE_NEXT_MENU UI_STATE_RIGHT_PRESSED UI_STATE_TEST_BUTTONS

#define UI_STATE_LOW_BATTERY   15 R - Low battery at runtime