LCD MENU **

        o THE LIQUID CRYSTAL DISPLAY~
>
                +----------------+   16 characters on 2 lines
                |1234567812345678|
                |ABCDEFGHIJKLMNOP|
                +----------------+
<

        o ELEMENTS OF MENU~


        1. Directional arrows   : *<* *>*  (arrow appear only if a previous/next feature can be set)
        2. Parameter/Feature title on top line
        3. Value on bottom line
>
                +----------------+    
                |< TITLE/FEATURE>|    
                |Value read/write|    
                +----------------+    
                            

      Samples:  +----------------+  +----------------+                        
                | MorningAlarm  >|  |< EveningAlarm >| 
                |    06:25:00    |  |    20:25:00    | 
                +----------------+  +----------------+ 
                Sample Page A Menu  Sample Page B Menu     




ULTRASONIC SENSOR COMMAND ))))))))) **


        o AVAILABLE DATA~

        1. Distance hand from ultrasonic
>
            # short  distance : d < 10 cm                                                  =>D1
            # middle distance :     10 cm < d < 30 cm                                      =>D2
            # long   distance :                 30 cm < d < 100 cm                         =>D3
<

        2. Time/Chronometer
>
            # short       time : t < 1 second                                              =>T1
            # middle      time :     2 seconds < t < 4 seconds                             =>T2
            # long        time :                        10 seconds < t < 30 seconds        =>T3
            # very long   time :                                         30 seconds < t    =>T4

            # start delay needed to take care human hand in front of sensor    : 1.5 second



            eg: waiting interval time Tn at distance to available a command (see below)

   distance     ^
                |\\\                       
                |\\\                       
                |\\\                       
                |\\\+-------------------+ short distance < 10cm between hand and ultrasonic
                |\\\|                   |  
                |\\\|                   |  
                |\\\|                   |  
                +-----------------------+----->  time
               0    ^_start delay       ^_T2     
                             
<


        o NEEDED MENU COMMANDS~

                                                    MANAGED MODE~

        1. Launching/Entry Menu                    *menu*
            1.a Turn pages menu to right or left   *menu*
            1.b Modify value of parameter          *param_modification*
        2. Leaving/Quit Menu                       *menu*