lcd.c

abov公司的单片机器MC80F7208的演示程序,C代码,包含LCD,I2C,KEY,ADC,NVM,TIME等内容,适合初学者熟悉.

/*     the start of Lcd.c						*/
//============================================================
//     name  : Lcd.c
//     task  : LCD Display 
//     history
//=============================================================*/

//------------------------------------------------------------------
//	Include file and variable 
//------------------------------------------------------------------


#include <hms800.h>				//
#include "MC80C7208.h"				// SFR define 
#define  USER_EXTERN extern
#include "Variable.h"				//

//------------------------------------------------------------------
//	external prototype function	
//------------------------------------------------------------------

void Hex_to_Dec(void);
void Lcd_Off(void);
void Lcd_On(void);


//=========================================================================
//	New Display Font Table 1/4 duty 								 
//
//     aaaaa         11111 
//	f     b             1
//	f     b             1      Seg0  ---- gfed
//	f     b             1            0000 1110
//     ggggg         11111    
//	e     c       1            Seg1  ---- abch
//	e     c       1                  0000 0011  
//	e     c       1
//     ddddd   hh   1111111    
//	    
//========================================================================= 

CODE unsigned char Font_ASCII[] =
{	
	0xEB,			// Chr0	1110_1011b			0	 					
	0x60,			// Chr1	0110_0000b			1	 
	0xC7,			// Chr2	1100_0111b			2	 	
	0xE5,			// Chr3	1110_0101b			3	 	
	0x6C,			// Chr4	0110_1100b			4	 
	0xAD,			// Chr5	1010_1101b			5	 
	0xAF,			// Chr6	1010_1111b			6	 	
	0xE8,			// Chr7	1110_1000b			7	 	
	0xEF,			// Chr8	1110_1111b			8	 	
	0xEC,			// Chr9	1110_1100b			9	 
	0xEE,			// ChrA	1110_1110b			A	 
	0x2F,			// ChrB	0010_1111b			b	 	
	0x8B,			// ChrC	1000_1011b			C	 	
	0x67,			// ChrD	0110_0111b			d	 	
	0x8F,			// ChrE	1000_1111b			E	 	
	0x8E,			// ChrF	1000_1110b			F	 

	0x20,			// Chr_	0010_0000b			-	10 		
	0xD0,			// ChrL	1100_0000b			L	11 					
	0xE4,			// ChrO	1110_0100b			o	12 					
	0x73,			// ChrP	0110_0011b			P	13 					
	0xB5,			// ChrS	1010_0101b			S	14 					
	0x76,			// ChrH	0110_0110b			H	15 					
	0x00,			// Space	0000_0000b	 		 	0x16 		
	0x64,			// ChrN	0110_0100b			n	17
	0xF0,			// ChrT	1110_0000b			t	18
	0xD6,			// ChrU	1100_0110b			u	19
	0x60			// ChrR	0110_0000b			r	1A
};




//======================================================================= 
//	Display function 									  
//======================================================================= 

//-------------------------------------------------------------------------
//	Task	: Lcd On									
//
//			SUBM(7) REFENB(6) LCDEN(5) VBEN(4) DTY1/0  LCK1/0 
//	Internal  	    0      0        1        1       00      11  (booster mode)
//	External 	    0      1        1        0       00      11  (bias mode)
//------------------------------------------------------------------------- 
 
void Lcd_On(void)
{
//	if (DEBUG)				// 
//		LCR	= 0x33;		// 0011_0011 booster mode under MC80F7208 and Emulator  
//	else
		LCR	= 0x62;		// 0110_0010 bias mode under MC80F7108,MC80F7208
}

//-------------------------------------------------------------------------
//	Task	: Lcd Off		Booster disable 							
//------------------------------------------------------------------------- 

void Lcd_Off(void)
{
	LCR	= 0x00;
}

//-------------------------------------------------------------------------
//	Task	: Lcd All clean up								
//------------------------------------------------------------------------- 

void Lcd_Clear(void)
{
	LCR	= 0x00;			// Lcd_Off()

 asm("
 	lda	#00h				;
	ldy	#24				; 
Lcd_Buf_Clear:
	sta	!460h+Y			;SEG0
	dbne	Y, Lcd_Buf_Clear		;

    ");

	SEG32	= 0;				//
	SEG33	= 0;				//
	SEG34	= 0;				//

	R5PSR	= 0x00;			// 
	R6PSR	= 0x00;			// 
	R7PSR	= 0x00;			// 

	Lcd_On(); 				// 
//	LCR	= 0x62;			// 0110_0010 bias mode under MC80F7108,MC80F7208
}


//-------------------------------------------------------------------------
//	Task	: Key display  	
//	input	:  
//------------------------------------------------------------------------- 

void Key_Display(void)
{
	i 	= (rKey_Command >> 4) & 0x0F;	//
	i	= Font_ASCII[i];			//
	SEG20	= (i >> 4) & 0x0F;		//
	SEG21	= i & 0x0F;  			//  

	i	= rKey_Command & 0x0F;		//
	i	= Font_ASCII[i];			//
	SEG18	= (i >> 4) & 0x0F;		//
	SEG19	= i & 0x0F;  			//  
}

//-------------------------------------------------------------------------
//	Task	: Clock display  	
//	input	: rLcd_Buf[0] ~ rLcd_Buf[3] 
//------------------------------------------------------------------------- 

void Clock_Display(void)
{
	LCR	= 0x62;				// 0110_0010 bias mode under MC80F7108,MC80F7208

	i	= Font_ASCII[rLcd_Buf[0]];	//
	SEG1	= (i >> 4) & 0x0F;		//
	SEG0	= i & 0x0F;  			//  

	i	= Font_ASCII[rLcd_Buf[1]];	//
	i	= (i >> 4) & 0x0F;		//
	SEG3 = i | 0x01;				//
	i	= Font_ASCII[rLcd_Buf[1]];	//
	SEG2	= i & 0x0F;				//  

	i	= Font_ASCII[rLcd_Buf[2]];	//
	i	= (i >> 4) & 0x0F;		//
	SEG5  = i | 0x01;				// Clock Logo 
	i	= Font_ASCII[rLcd_Buf[2]];	//
	SEG4	= i & 0x0F;				//  

	i	= Font_ASCII[rLcd_Buf[3]];	//
	SEG7	= (i >> 4) & 0x0F;		//
	SEG6	= i & 0x0F;				//  
}

//-------------------------------------------------------------------------
//	Task	: Alram display  	
//	input	:  
//------------------------------------------------------------------------- 

void Alram_Display(void)
{
	SEG14	= 0x07;				//
	SEG15	= 0x0F;  				//  
}


//-------------------------------------------------------------------------
//	Task	: Clock display  	
//	input	: rLcd_Buf[0] ~ rLcd_Buf[3] 
//------------------------------------------------------------------------- 

void Alarm_Display(void)
{
	i	= Font_ASCII[rLcd_Buf[0]];	//
	SEG15	= (i >> 4) & 0x0F;		//
	SEG14	= i & 0x0F;  			//  

	i	= Font_ASCII[rLcd_Buf[1]];	//
	SEG13	= (i >> 4) & 0x0F;		//
	SEG12	= i & 0x0F;				//  

	i	= Font_ASCII[rLcd_Buf[2]];	//
	SEG11	= (i >> 4) & 0x0F;		//
	SEG10	= i & 0x0F;				//  

	i	= Font_ASCII[rLcd_Buf[3]];	//
	SEG9	= (i >> 4) & 0x0F;		//
	SEG8	= i & 0x0F;				//  

}

//=======================================================================
//	task	: LCD display   
//======================================================================= 

void Process_Lcd(void)				// LCD display check 
{	
	if (rTimer_4ms[TIME_Lcd])		//  
		return;				// 

	rTimer_4ms[TIME_Lcd] = 250;		// 1 sec  			

		
	switch(rLcd_Mode)				//
	{	
		case	MODE_ALRAM:			//
			Alram_Display();		// Menu display 
		break;				//

		case	MODE_CLOCK:			//
			Clock_Display();		// Clock display 
		break;				//
	}						//
}
//========================================================================
/*	end of Lcd.C									*/