hz12232a.asm

液晶显示屏的资料集锦

;                    SMG12232A接口程序（MCS51总线方式）
;***************************************************************************
;*  Title : Accessing to LCD-CONTROLLER                                    *
;*  Date :  2000.11.3                                                      *
;*  Support telephone:  [phone](CHANGSHA SUNMAN)              *
;*  Support fax :[phone]  Support E-mail:[e-mail]       *
;*  Create by :褚建军(chujianjun),朱长春(zhuchangchun)                     *
;*  DESCRIPTION:This subroutine shows how to write data to LCD-CONTROLLER  *
;***************************************************************************
;连线图: *LCM---8031* *LCM---8031* *LCM------------8031* *LCM----------8031*
;        *DB0---P0.0* *DB4---P0.4* *A0-------------P2.0* *CS1----------P2.1*
;        *DB1---P0.1* *DB5---P0.5* *RD-------------P3.7* *CS2----------P2.2*
;        *DB2---P0.2* *DB6---P0.6* *WR-------------P3.6*                   *  
;        *DB3---P0.3* *DB7---P0.7* *RST------------GND       (详见说明书） *
;注:8031的晶振频率为12MHz                                                  *
;***************************************************************************
CS1ADDR		EQU	0FCFFH	;P2.1	
CS2ADDR		EQU	0FAFFH	;P2.2
A0ADDR		EQU	0100H	;P2.0	COMMAND:0 DATA:1
XPOS            EQU     20H
YPOS            EQU     21H
        ORG     0000H
        JMP     START
START:  MOV     SP,#60H
MAIN:        
        CALL    LCDRESET
        MOV	A,#55H
        CALL	LCDFILL
        MOV	DPTR,#STRING1
        CALL	PUTSTR
        CALL	PUTSTR
        JMP	MAIN
DELAY400MS:
        MOV     R0,#20              ;延时子程序(400MS)
DL4_PA: MOV     R1,#100
DL4_PB: MOV     R2,#100
        DJNZ    R2,$
        DJNZ    R1,DL4_PB
        DJNZ    R0,DL4_PA
        RET
DELAY:
	MOV	R6,#2
DLY_PA:	MOV	R5,#0
DLY_PB:	MOV	R4,#0
	DJNZ	R4,$
	DJNZ	R5,DLY_PB
	DJNZ	R6,DLY_PA
	RET        
GETSTRCHAR:        
GSC_PA:	
	CLR	A
	MOVC	A,@A+DPTR
	INC	DPTR
	MOV	B,A
	INC	A
	CLR	C
	JZ	GSC_LAX
	CLR	A
	MOVC	A,@A+DPTR
	INC	DPTR
	SETB	C
GSC_LAX:	
	RET
PUTSTR:
	CALL	DELAY
	CALL	GETSTRCHAR
	PUSH	DPL
	PUSH	DPH
	JNC	PSR_LAX
	JNB	B.7,PSR_LBY
;CHINESE:
	CALL	HZKPOS
	CALL	PUTCHARDOT
	CALL	PUTCHARDOT
	JMP	PSR_LBX
PSR_LBY:
;ENGLISH:
	CALL	HZKPOS
	CALL	PUTCHARDOT
PSR_LBX:
	POP	DPH
	POP	DPL
	JMP	PUTSTR
PSR_LAX:POP	DPH
	POP	DPL	
	RET
PUTCHARDOT:
	MOV	R7,#8
PAC_PA:
	CLR	A
	MOVC	A,@A+DPTR
	CALL	LCDWRITE
	INC	YPOS
	INC	DPTR
	CLR	A
	MOVC	A,@A+DPTR
	CALL	LCDWRITE
	DEC	YPOS
	INC	DPTR
	CALL	CUSORNEXT
	MOV	A,XPOS
	JNZ	PAC_LAX
	INC	YPOS
PAC_LAX:	
	DJNZ	R7,PAC_PA
	RET
HZKPOS:
	MOV	R2,#5
HTP_PA:	
	CLR	C
	RLC	A
	XCH	A,B
	RLC	A
	XCH	A,B
	DJNZ	R2,HTP_PA
	
	MOV	DPTR,#HZKDOT
	ADD	A,DPL
	MOV	DPL,A
	MOV	A,B
	ADDC	A,DPH
	MOV	DPH,A
	RET	
LCDFILL:                        ;LCD整屏显示A的内容
        MOV     R7,A
        MOV     YPOS,#0
LFL_PB: MOV     XPOS,#0
LFL_PA: MOV     A,R7
        CALL    LCDWRITE        ;定位并写数据
        CALL    CUSORNEXT
        MOV     A,XPOS
        JNZ     LFL_PA          
        MOV     A,YPOS
        JNZ     LFL_PB        
        RET
LCDWRITE:                    ;定位并写数据子程序
        CALL    LCDPOS       ;内部写数指针定位
        CALL    LCDWD        ;写数据
        RET

CUSORNEXT:
	INC	XPOS
	MOV	A,XPOS
	CJNE	A,#128,CNT_LAX
	MOV	XPOS,#0
	INC	YPOS
	ANL	YPOS,#3H
CNT_LAX:	
	RET	
	
LCDWD:
	MOV	B,A
	MOV	A,XPOS
	CJNE	A,#61,$+3
	JNC	LWD_LA1
	MOV	A,B
	CALL	LCDWD1
	JMP	LWD_LAX
LWD_LA1:CJNE	A,#122,$+3
	JNC	LWD_LA2
	MOV	A,B
	CALL	LCDWD2
	JMP	LWD_LAX
LWD_LA2:
LWD_LAX:
	RET	
LCDPOS:
	PUSH	ACC
	MOV	A,YPOS
	ANL	A,#3
	ADD	A,#0B8H
	MOV	B,A
	MOV	A,XPOS
	CJNE	A,#61,$+3
	JNC	LPS_LA1
	ANL	A,#3FH
	CALL	LCDWC1
	MOV	A,B
	CALL	LCDWC1
	JMP	LPS_LAX
LPS_LA1:CJNE	A,#122,$+3
	JNC	LPS_LA2
	CLR	C
	SUBB	A,#61
	CALL	LCDWC2
	MOV	A,B
	CALL	LCDWC2
	JMP	LPS_LAX
LPS_LA2:
LPS_LAX:
	POP	ACC
	RET	
LCDRESET:                                               ;LCD控制器复位
	MOV	A,#0C0H                                  ;设置显示初始行
	CALL	LCDWC1
	CALL	LCDWC2
	MOV	A,#0A0H                                  ;设置列序方向为正向
	CALL	LCDWC1
	CALL	LCDWC2
	MOV	A,#0A4H                                  ;设置显示模式为正常显示
	CALL	LCDWC1
	CALL	LCDWC2
	MOV	A,#0A9H                                  ;设置显示占空比为1/32  
	CALL	LCDWC1
	CALL	LCDWC2
	MOV	A,#0AFH                                  ;开显示
	CALL	LCDWC1
	CALL	LCDWC2
	RET	
LCDWC1: 
        PUSH    DPL
        PUSH    DPH
                                                        ;送片1控制字子程序
	CALL    WAITIDLE1
	MOV	DPTR,#CS1ADDR	         ;CS1=0 CS2=1 A0=0
	MOVX	@DPTR,A
	POP     DPH
	POP     DPL
       	RET
LCDWC2:                                                 ;送片2控制字子程序
        PUSH    DPL
        PUSH    DPH
        CALL	WAITIDLE2
	MOV	DPTR,#CS2ADDR	         ;CS1=1 CS2=0 A0=0
	MOVX	@DPTR,A
	POP     DPH
	POP     DPL
       	RET
LCDWD1:	   	                        ;片1写数据子程序                 
        PUSH    DPL
        PUSH    DPH
	CALL	WAITIDLE1
	MOV	DPTR,#CS1ADDR+A0ADDR	 ;CS1=0 CS2=1 A0=1
	MOVX	@DPTR,A
	POP     DPH
	POP     DPL
       	RET       
LCDWD2:	                                 ;片2写数据子程序
        PUSH    DPL
        PUSH    DPH
	CALL	WAITIDLE2
	MOV	DPTR,#CS2ADDR+A0ADDR	 ;CS1=1 CS2=0 A0=1
	MOVX	@DPTR,A
	POP     DPH
	POP     DPL
       	RET       
WAITIDLE1:                               ;片1"忙"检测
        PUSH    ACC
        MOV     DPTR,#CS1ADDR            ;CS1=0 CS2=1 A0=0
WT_PA: MOVX     A,@DPTR
        JB      ACC.7,WT_PA
        POP     ACC
        RET
WAITIDLE2:                               ;片2"忙"检测
        PUSH    ACC
        MOV     DPTR,#CS2ADDR            ;CS1=1 CS2=0 A0=0
WT1_PA: MOVX    A,@DPTR
        JB      ACC.7,WT1_PA
        POP     ACC
        RET
HZKDOT:	
	INCLUDE "12232A\HZKLIB.ASM"      ;汉字库文件
	INCLUDE "12232A\HZKSTR.ASM"      ;汉字字符串文件
        END