lcd1335_driver.asm

SED1335液晶显示8051接口驱动程序及显示例程

;LCD1335汇编驱动程序及显示例程
;LCD_INIT
DAT    EQU 8000H;LCD数据地址
COM    EQU 8001H;LCD命令地址
SD1L   EQU 00H;第一屏缓冲L
SD1H   EQU 00H;第一屏缓冲H
SD2L   EQU 80H;第二屏缓冲L
SD2H   EQU 25H;第二屏缓冲H
SD3L   EQU 00H;第三屏缓冲L
SD3H   EQU 4BH;第三屏缓冲H

;LCD初始化
INIT_LCD:MOV DPTR,#COM
         MOV A,#40H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#30H
         MOVX @DPTR,A
         MOV A,#87H
         MOVX @DPTR,A
         MOV A,#07H
         MOVX @DPTR,A
         MOV A,#39
         MOVX @DPTR,A
         MOV A,#54
         MOVX @DPTR,A
         MOV A,#239
         MOVX @DPTR,A
         MOV A,#40
         MOVX @DPTR,A
         MOV A,#0
         MOVX @DPTR,A
         MOV DPTR,#COM
         MOV A,#44H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#SD1L
         MOVX @DPTR,A
         MOV A,#SD1H
         MOVX @DPTR,A
         MOV A,#240
         MOVX @DPTR,A
         MOV A,#SD2L
         MOVX @DPTR,A
         MOV A,#SD2H
         MOVX @DPTR,A
         MOV A,#240
         MOVX @DPTR,A
         MOV A,#SD3L
         MOVX @DPTR,A
         MOV A,#SD3H
         MOVX @DPTR,A
;
         MOV DPTR,#COM
         MOV A,#5AH
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#0
         MOVX @DPTR,A
;
         MOV DPTR,#COM
         MOV A,#4CH
         MOVX @DPTR,A
         MOV DPTR,#COM
         MOV A,#5BH
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#1CH
         MOVX @DPTR,A
;
         MOV DPTR,#COM
         MOV A,#58H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#00H
         MOVX @DPTR,A
;
         MOV DPTR,#COM
         MOV A,#46H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#SD1L
         MOVX @DPTR,A
         MOV A,SD1H
         MOVX @DPTR,A
;
         MOV DPTR,#COM
         MOV A,#42H
         MOVX @DPTR,A
;
         MOV DPTR,#34FFH
  LCD_LP:MOV A,#00H
         MOVC A,@A+DPTR
         INC DPTR
         PUSH DPH
         PUSH DPL
         MOV DPTR,#DAT
         MOVX @DPTR,A
         POP DPL
         POP DPH
         MOV A,DPH
         ANL A,80H
         JZ LCD_LP
         RET
;LCD显示第一屏幕
LCD1:    MOV DPTR,#COM
         MOV A,#59H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#80H
         MOVX @DPTR,A
         RET
;LCD显示第二屏幕
LCD2:    MOV DPTR,#COM
         MOV A,#59H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#20H
         MOVX @DPTR,A
         RET
;LCD显示第三屏幕
LCD3:    MOV DPTR,#COM
         MOV A,#59H
         MOVX @DPTR,A
         MOV DPTR,#DAT
         MOV A,#80H
         MOVX @DPTR,A
         RET
;LCD显示表
ORG 34FFH

END