int_keyboard.c

The combined demo is dedicated for S1C33L05, so DMT33L05 should be used to load and run the demo. F

//---------------------------------------------------------------------------------
//
//      Copyright (C) SEIKO EPSON CORP. 2003
//
//      GROUP			: SEE LSI
//      FILE                    : int_keyboard.c
//      MODULE                  :
//      Function description    : This is an interrupt file.
//      Revision history        :
//                                Date            userName         Description
//                                 2004/01/06     Angela Yuan      start
//
//      Notes                   :
//
//---------------------------------------------------------------------------------

//---------------------------------------------------------------------------------
// Include files (#include)
//---------------------------------------------------------------------------------

#include "../include/drv_key.h"

//---------------------------------------------------------------------------------
// Global & static variables
//---------------------------------------------------------------------------------

extern unsigned short scanin_data[];

extern unsigned char key_position;

extern line_scanin();
extern char scanout();
extern disable_keyscanint();
extern void enable_keyscanint();
extern timer_disable();
extern timer_enable();

unsigned short global_variable;

void int_scanout(void)__attribute__ ((interrupt_handler));
void   int_clocktimer(void);


//---------------------------------------------------------------------------------
//  	Function name 		: int_scanout()
// 	Function description	: input interrupt for key input
//
//      Parameters
//         Input  : none
//         Output : none
//         I/O    : none
//
//      Return value : none
//
//	Global variable 	:
//---------------------------------------------------------------------------------
void int_scanout(void)

      {
  
	   disable_keyscanint();
       timer_enable();

      }

//---------------------------------------------------------------------------------
//  	Function name 		: int_clocktimer()
// 	Function description	: input interrupt for clocktimer
//
//      Parameters
//         Input  : none
//         Output : none
//         I/O    : none
//
//      Return value : none
//
//	Global variable 	: equal, addr
//---------------------------------------------------------------------------------

unsigned char addr_pre;

void   int_clocktimer(void)
{
	unsigned char addr_post;
	unsigned char i;
	unsigned char tmp;
	
	asm("popn %r1");
	ent_int();
	asm("pushn %r14");
	
        timer_disable();
        if(!bKeyStatus)            //push key de_shifting
          {
           for (i= 0, addr_pre = 0xff; (addr_pre == 0xff) && (i<0x0d); i++)
	         {
	         global_variable = (global_variable | 0x1fff) & scanin_data[i];
	         line_scanin(global_variable);
	         addr_pre = scanout();
	         }
	     if ((addr_pre | 0xfe )== 0xfe)
	         {
	         tmp = 1;
	         addr_pre = 0xfe;
	         }
	     else if ((addr_pre | 0xfd ) == 0xfd)
	         {
	         tmp = 2;
	         addr_pre = 0xfd;
	         }
	     else if ((addr_pre | 0xfb ) == 0xfb)
	         {
	         tmp = 3;
	         addr_pre = 0xfb;
	         }
	     else if ((addr_pre | 0xf7 ) == 0xf7)
	         {
	         tmp = 4;
	         addr_pre = 0xf7;
	         }
	     else if ((addr_pre | 0xef ) == 0xef)
	         {
	         tmp = 5;
	         addr_pre = 0xef;
	         }
	     else
	         {
	         tmp = 0;
	         addr_pre = 0xff;
	         }
	     if (!tmp)                             //just a push shifting
	                {
	                global_variable = (global_variable & 0xe000);
	                line_scanin(global_variable);
	                enable_keyscanint();
	                }
	     else                                  //key is pushed
	                {
	                key_position = i*5 + tmp;
	                bKeyStatus    = 1;
	                iset_flg(1, 0x010);
	                timer_enable();
	                }
	    }
	else                                      //poping key de_shift
	    {
	     addr_post = (scanout() |addr_pre);
	     if (addr_post == 0xff)               //key is poped
	         {
	         bKeyStatus = 0;
	 		 iset_flg(1, 0x010);
	         global_variable = (global_variable & 0xe000);
	         line_scanin(global_variable);
	         enable_keyscanint();
	         }
	     else                                 //just a pop shifting
	         timer_enable();
	    }

   	asm("popn %r14");
   	ret_int();
}