keyprocess.c

这是符合国家一级汉字标准的汉字显示液晶模块程序

#pragma	interrupt INTTM02 Inter_TM02 //interrupt serve function name 
																		 //Inter_TM2.
/*    
** Module name: KeyProcess                                                  
**
** Description:
**	    This module processes key value from the remote control reception. 
**
** Operation:
**	    1. process the key value received;        
**			2. transform it to BCD in Chinese or English input method; 
** 			3. put it respectively to spelling string. 
**	             	        		
*/
#include "MyDefine.h"
#include "MyRemoteReception.h"  

//extern sreg Uchar g_RPTCT;
extern bit g_btRPT;

extern bit btkeyPress;		//present the status of any keys

extern bit btKeyPressedTooLong;

extern Uchar g_keyFlgCnt;

bit btTwoKeys750ms;

extern bit overTwoKeys750ms;

extern sreg Uchar S_rightKeyCnt;//add new 13
extern sreg Uchar S_leftKeyCnt;
extern sreg Uchar s_dispKeyCnt;

extern sreg Uchar s_enChinKeyCnt;//add new 2
extern sreg Uchar s_capsSwitchKeyCnt;
extern sreg Uchar s_symbolKeyCnt;
	
extern sreg Uchar S_upKeyCnt;
extern sreg Uchar S_downKeyCnt;


//add new 2
static Uchar s_2ABCkeyCnt;

static sreg Uchar s_preDataCode;

//static bit s_btTM02Start;	

//static sreg Uchar s_g_TM02Cnt;



/*    
** Function name: Inter_TM02                                                  
**
** Description:
**	       The function is ISR - Interrupt Service Routine of timer2
**         interval timer and used for the time when any key is pressed. 
**
** Input parameters:
**	            no
**
** Output parameters:
**	             no
**
** Return value:
**	        no		
*/
void Inter_TM02()
{	
	/*
	static sreg Uchar s_g_TM02Cnt = 0;
	static Uchar s_preKeySymbolCnt;
						
	if((g_keyFlgCnt != 0)&&(g_keyFlgCnt == s_preKeySymbolCnt))
	{
		s_g_TM02Cnt++;
	
		if(s_g_TM02Cnt >= 250)
		{
			s_g_TM02Cnt = 0;
			
			btTwoKeys750ms = 1;							
		}				
	}
	
	if((g_keyFlgCnt != s_preKeySymbolCnt))
	{
		s_preKeySymbolCnt = g_keyFlgCnt;
		
		s_g_TM02Cnt = 0;
	}	
	*/
	static sreg Uchar s_g_TM02Cnt = 0;
	static Uchar s_preKeySymbolCnt;
	if((g_keyFlgCnt != s_preKeySymbolCnt))
	{
		s_preKeySymbolCnt = g_keyFlgCnt;
		
		s_g_TM02Cnt = 0;
		
		//btTwoKeys750ms = 0;
		
	}
	
	if(g_keyFlgCnt == s_preKeySymbolCnt)
	{
		s_g_TM02Cnt++;
		
		if(s_g_TM02Cnt >= 250)
		{
			s_g_TM02Cnt = 0;
									
			//s_preDataCode = 0x70;//add new
	        
			btTwoKeys750ms = 1;
			
			overTwoKeys750ms = btTwoKeys750ms;
	        
		}				
	}	
}



//幈幘幒幆幨 幮鑾紟訋入幍幗if(g_btRMDTSET){..}幹幮		
/*
** Function name: getIrKey
**
** Description:
**	       The function is to obtain key value.
**			
** Input parameters:
**	            dataCode -- the remote input data code							
**
** Output parameters:
**	            no 
**
** Return value:
**	        	IR_KEY --	When received the right remote input data code.
**					  s_preKey -- when repeat code flag comes.
*/
//幈幘幒幆幨 幮鑾紟訋入幍幗if(g_btRMDTSET){..}幹幮

Uchar getIrKey(Uchar dataCode)
{
	//be sure to add static sreg as prefix in order to keep the variable 
	//until the next invocation.
	static sreg Uchar s_preDataCode = 0;
	
	static sreg Uchar s_preKey = 0;
	
	static sreg Uchar s_progSelKeyCnt = 0;
	
	static sreg Uchar s_capsSwitchKeyCnt = 0;
		
	static sreg Uchar s_2ABCkeyCnt = 0;
	
	static sreg Uchar s_3DEFkeyCnt = 0; 
	
	static sreg Uchar s_4GHIkeyCnt = 0; 
	
	static sreg Uchar s_5JKLkeyCnt = 0;
	
	static sreg Uchar s_6MNOkeyCnt = 0; 
	
	static sreg Uchar s_7PQRSkeyCnt = 0; 
	
	static sreg Uchar s_8TUVkeyCnt = 0;  
	
	static sreg Uchar s_9WXYZkeyCnt = 0;       
	
	static sreg Uchar s_16_9keyCnt = 0;
	
  static sreg Uchar s_TVAVkeyCnt = 0;
	                 	
	/*                                                       
	**s_timerFlg - variable which is relevant to key timing
**X X X X X X X X                                        
	**          | | |__s_timerFlg.0: 幤魩稁瘞稁◣蕩睅器2	         
	**          | |    0:         
	**          | |    1:         
	**          | |      	                                   
	**          | |____s_timerFlg.1:            
	**          |      0:         
	**          |      1:         
	**          |                                            
	**          |______s_timerFlg.2:             
	**                 0:         
	**                 1:         
	*/                                                       
	//static sreg Uchar s_timerFlg = 0;
	  
	Uchar IR_KEY;
	  
	//TCE02 = 1;	//Timer02 starts.???
    
  //幎幵幱広btkeyPress幬帾幜銕謳畮菐皫