lcd162.txt

由2个外部单刀单掷开关来完成所有时间的设置。可选择12小时或24小时两种显示模式。该电路可通过内部5V 的电压调整器由电池进行供电或使用一个外部固定的电源供电

;--------液晶LCD-162通信子程序及用法----------
;----------------------------------------------
DISPWLL
        CLRF   RD
        MOVLW  B'01000000'
        MOVWF  TRISC
        MOVLW  0FFH
        MOVWF  TRISD
        BCF    RC,RS3  
        BSF    RC,RW3
        BSF    RC,E
        MOVF   RD,W
        MOVWF  BUFFER
        BTFSC  BUFFER,7
        GOTO   DISPWLL2
        CLRWDT
        BCF    RC,E
        BCF    RC,RW3
        BSF    RC,E
        BCF    RC,RS3
        BCF    RC,RW3
        GOTO   DISPW
DISPWHL
        CLRF   RD
        MOVLW  B'01000000'
        MOVWF  TRISC
        MOVLW  0FFH
        MOVWF  TRISD
        BCF    RC,RS3   
        BSF    RC,RW3
        BSF    RC,E
        MOVF   RD,W
        MOVWF  BUFFER
        BTFSC  BUFFER,7
        GOTO   DISPWHL2
        CLRWDT
        BCF    RC,E
        BCF    RC,RW3
        BSF    RC,E
        BCF    RC,RS3

        BSF    RC,RS3
        BCF    RC,RW3
DISPW
        MOVLW  0
        MOVWF  TRISD
        BCF    RC,RW3    
        BSF    RC,E
        MOVF   DATA3,W
        MOVWF  RD
        BCF    RC,E
        NOP
        BSF    RC,RW3
        BSF    RC,E
        BCF    RC,E     
        RETLW  0
;------------------------------
;******************************
;       实际用法
;------------------------------
;       芯片复位程序
;------------------------------
DISPSTART
        MOVLW  B'00110000'
        MOVWF  DATA3
        CALL   DISPWLL
        CALL   DELAY
        MOVLW  B'00110000'
        MOVWF  DATA3
        CALL   DISPWLL
        CALL   DELAY
        MOVLW  B'00110000'
        MOVWF  DATA3
        CALL   DISPWLL
       
        MOVLW  B'00111000'
        MOVWF  DATA3
        CALL   DISPWLL
        MOVLW  B'00001000'
        MOVWF  DATA3
        CALL   DISPWLL
        MOVLW  B'00000001'
        MOVWF  DATA3
        CALL   DISPWLL
        MOVLW  B'00000111'
        MOVWF  DATA3
        CALL   DISPWLL
;------------------
        CALL   DISPS
        MOVLW  B'00000001'
        MOVWF  DATA3
        CALL   DISPWLL
        CALL   WELCOME
;---------------------------- DISPLAY SATUP
;       显示模式设置
;----------------------------
DISPS
        MOVLW  B'00111000'
        MOVWF  DATA3
        CALL   DISPWLL
        
        MOVLW  B'00001100'
        MOVWF  DATA3
        CALL   DISPWLL
        
        MOVLW  B'00000110'
        MOVWF  DATA3
        CALL   DISPWLL
        RETLW  0
;---------------------------- 
;       显示'WELCOME'程序
;------------------------------
WELCOME
        MOVLW  D'0'          ; WELCOME TO USE
        MOVWF  LBYTE
        MOVLW  D'14'
        MOVWF  COUNT9
        MOVLW  0C3H
        MOVWF  DATA3
        CALL   DISPWLL
        CALL   CABIAO
        RETLW  0
;------------------------
CABIAO
        BSF    STATUS,RP0
        MOVLW  2FH
        MOVWF  81H
        BCF    STATUS,RP0
        MOVF   LBYTE,W
        CALL   TABLE0
        MOVWF  DATA3
        CLRWDT
        CALL   DISPWHL
        INCF   LBYTE,1
        DECFSZ COUNT9,1
        GOTO   CABIAO
        RETLW  0
;-------------------------
;******************************
        ORG    0100H
;******************************
TABLE0              
         
        ADDWF  PCL,1
        RETLW  57H       ;WELCOME  TO  USE    
        RETLW  45H
        RETLW  4CH
        RETLW  43H
        RETLW  4FH
        RETLW  4DH
        RETLW  45H

        RETLW  20H

        RETLW  54H
        RETLW  4FH

        RETLW  20H
        RETLW  55H
        RETLW  53H
        RETLW  45H              ;46
;-----------------------------
        END