HANDLER_ContrastPage.cpp

00001 #include "mbed.h"
00002 
00003 #include "menuIDs.h"
00004 #include "MainMenu.h"
00005 #include "console.h"
00006 
00007 extern BusInOut switches; //(p21, p22, p23, p24)
00008 extern MainMenu pageMenu[MAXPAGES ];
00009 
00010 
00011 int ContrastPageHandler()
00012 {
00013      int userSelection = 0;
00014      pageMenu[CONTRAST].printMenu();
00015 
00016     unsigned char lastState = 0x0f;  //0000 1111
00017      bool exitCurrentMenu = false;
00018 
00019      while ( exitCurrentMenu == false)
00020         {
00021         
00022         unsigned char currentState = switches.read();  //reading a port add a AND MASK & 0b00000111
00023         wait_ms(10);
00024         if( currentState == switches.read() && currentState != lastState)
00025             {
00026             lastState = currentState; 
00027             switch(currentState)
00028                 {
00029                 case 0x0e:
00030                     pageMenu[CONTRAST].erase();
00031                     printXY("                       ", 5, 10);
00032                     userSelection = SCREENSET;
00033                     exitCurrentMenu = true;
00034                     break;
00035                 case 0x0d:
00036                      pageMenu[CONTRAST].highlightPrevItem();
00037                     break;
00038                 case 0x0b:
00039                      pageMenu[CONTRAST].highlightNextItem();
00040                     break;
00041                 case 0x07:
00042                     userSelection = pageMenu[CONTRAST].getHighlightedItem() ;
00043                     break;
00044                 }//eo select
00045                 
00046                 if (userSelection != 0 && userSelection != SCREENSET)
00047                     {
00048                     // place code here to handle actions processed directly from this page
00049                     switch(userSelection)
00050                         {
00051                         case CONTRASTUP:
00052                             printXY("Contrast +1          ", 5, 10);
00053                             //call function to perform task
00054                             break;
00055                         case CONTRASTDOWN:
00056                             printXY("Contrast -1    ",5,10);
00057                             //call function to perform task
00058                             break;
00059                         }
00060                     // eo place code here ......
00061                     userSelection = 0;
00062                     }
00063                 wait_ms(200);
00064             }//eo if kbhit
00065         }//eo while
00066         return userSelection;
00067 }