t_keyprocess.c

来自「schduler for AVR mcu」· C语言 代码 · 共 66 行

/*
------------------------------------------------------------------*-

   T_KeyProcess.C (v1.00)

  ------------------------------------------------------------------
   
   Key scan  program (Test Version 1.0)


   COPYRIGHT
   ---------

   This code is from the book:

   PATTERNS FOR TIME-TRIGGERED EMBEDDED SYSTEMS by Michael J. Pont 
   [Pearson Education, 2001; ISBN: 0-201-33138-1].

   This code is copyright (c) 2001 by Michael J. Pont.
 
   --- Modefied by  sylva zhu to apply for  AVR Microcontroller .
   --- Ver 1.0  Sept 25th , 2006 .

-*------------------------------------------------------------------
*/
#include  <iom32.h>
#include  <inavr.h>
#include  <comp_a90.h>

#include  "Main.h"
#include  "T_KeyProcess.h"
#include  "T_KeyScan.h"
//
volatile  unsigned char  FAlarmBell=0 ;
//
/*
********************************************************************************
*
*	Function name :     KEY_PROCESS_Update
*
*	Returns :	    Process  Button value 	
*
*	Parameters :	    none
*
*	Purpose :	    called every 100mS   
*
********************************************************************************
*/
void KEY_PROCESS_Update(void)
{
   if( FKeyunProcessed )
     {
       if( KeyValue == KEY_UP )
         {
           FAlarmBell=1;
         }
       if( KeyValue == KEY_DOWN )
         {
           FAlarmBell=0;
         }
       FKeyunProcessed=0;
       KeyValue=NO_KEY_PRESSED;
     }
   
}