源程序:
LCD驱动
NAME LCDfunc
?PR?readLCDstate?LCDfunc SEGMENT CODE
?PR?WRDATA?LCDfunc SEGMENT CODE
?PR?LCDINIT?LCDfunc SEGMENT CODE
?PR?LCDCLEAR?LCDfunc SEGMENT CODE
?PR?_DisplayCN?LCDfunc SEGMENT CODE
?PR?_Delay?LCDfunc SEGMENT CODE
?DT?LCDfunc SEGMENT DATA
LCD_C_ADDR EQU 0FDFFH
LCD_D_ADDR EQU 0FCFFH
COL EQU 10H
RAMAddrH EQU 00H
PUBLIC _DisplayCN, LCDINIT,LCDCLEAR
PUBLIC _Delay
RSEG ?DT?LCDfunc
LCD_DAT1: DS 1
LCD_DAT2: DS 1
LCD_COM: DS 1
LCDGraphRamAddrH: DS 1
LCDGraphRamAddrL: DS 1
COUNT: DS 1
RSEG ?PR?readLCDstate?LCDfunc
R_ST:
MOV DPTR,#LCD_C_ADDR
MOVX A,@DPTR
RET
ST01:
LCALL R_ST
JNB ACC.0,ST01
JNB ACC.1,ST01
RET
ST2:
LCALL R_ST
JNB ACC.2,ST2
RET
ST3:
LCALL R_ST
JNB ACC.3,ST3
RET
ST6:
LCALL R_ST
JNB ACC.6,ERR
RET
ERR:
LJMP ST6 ;出错处理
RSEG ?PR?WRDATA?LCDfunc
WR2DAT:
LCALL ST01
MOV A,LCD_DAT1
LCALL SETWRDAT
WR1DAT:
LCALL ST01
MOV A,LCD_DAT2
LCALL SETWRDAT
WR0DAT:
LCALL ST01
MOV A,LCD_COM
LJMP WRDAT
SETWRDAT:
MOV DPTR,#LCD_D_ADDR ;设置数据通道地址/数据写入入口
WRDAT:
MOVX @DPTR,A
RET
;RSEG ?PR?RDDATA?LCDfunc
; RDDAT:
; LCALL ST01
; MOV DPTR,#LCD_D_ADDR
; MOVX A,@DPTR
; MOV LCD_DAT2,A
; RET
RSEG ?PR?LCDINIT?LCDfunc ;液晶初始化
LCDINIT:
MOV LCD_DAT1,#00H ;设置
MOV LCD_DAT2,#00H
MOV LCD_COM,#40H
LCALL WR2DAT
MOV LCD_DAT1,#COL
MOV LCD_DAT2,#00H
MOV LCD_COM,#41H
LCALL WR2DAT
MOV LCD_DAT1,#00H
MOV LCD_DAT2,#RAMAddrH
MOV LCD_COM,#42H
LCALL WR2DAT
MOV LCD_DAT1,#COL
MOV LCD_DAT2,#00H
MOV LCD_COM,#43H ;图形宽度设置
LCALL WR2DAT
MOV LCD_COM,#0A7H ;光标形状
LCALL WR0DAT
MOV LCD_COM,#88H ;显示方式设置
LCALL WR0DAT
MOV LCD_COM,#9CH ;启用图形显示
LCALL WR0DAT
RET
RSEG ?PR?LCDCLEAR?LCDfunc
LCDCLEAR:
MOV LCD_DAT1,#00H
MOV LCD_DAT2,#00H
MOV LCD_COM,#24H
LCALL WR2DAT
MOV R3,#00H
MOV R4,#20H
MOV LCD_COM,#0B0H ;自动写方式
LCALL WR0DAT
LCDCLEAR1:
LCALL ST3
MOV A,#00H
LCALL SETWRDAT
DJNZ R3,LCDCLEAR1
DJNZ R4,LCDCLEAR1
MOV LCD_COM,#0B2H
LCALL WR0DAT
RET
RSEG ?PR?_DisplayCN?LCDfunc
_DisplayCN:
MOV A,R5 ;R5 means Y.
MOV B,#COL ;col = 0x20(32)
MUL AB ; ?? A*B may be overflow. It should be handled carefully.
ADD A,R7 ;R7 means X.
MOV R7,A
MOV A,B
ADDC A,#RAMAddrH
; ADDC A,#08H
MOV R5,A
MOV DPTR,#CCTAB
MOV A,R3 ; FIGURE NUMBER
MOV B, #20H
MUL AB ; cal the offset from CCTAB or DIGITTAB .
; But A*B may be overflow. It should be handled carefully.
ADD A,DPL
MOV DPL,A
MOV A,B
ADDC A,DPH
MOV DPH,A
PUSH DPH
PUSH DPL
MOV COUNT,#10H
WRI_CC1:
MOV LCD_DAT1,R7
MOV LCD_DAT2,R5
MOV LCD_COM,#24H ;命令
LCALL WR2DAT
POP DPL
POP DPH
CLR A
MOVC A,@A+DPTR
MOV LCD_DAT2,A
MOV A,#10H ;;
MOVC A,@A+DPTR ;;
MOV LCD_DAT1,A ;
INC DPTR
PUSH DPH
PUSH DPL
MOV LCD_COM,#0C0H ;C0H vs C4H
LCALL WR1DAT
MOV LCD_DAT2,LCD_DAT1 ;;
LCALL WR1DAT ;;
MOV A,#COL ;显示宽度
ADD A,R7
MOV R7,A
CLR A
ADDC A,R5
MOV R5,A
DJNZ COUNT,WRI_CC1
POP ACC
POP ACC
RET
主函数
#include <STC89C51RC_RD_PLUS.h>
#include <D:DCSYLCD_ONE_okD_func.H>
#define ulong unsigned long
#define uint unsigned int
#define uchar unsigned char
main()
{
LCDInit();
LCDClear();
Delay(10);
Shebeiguzhang_str(4,112);
Display_str3(4,0, 0);
Display_str(6 ,80,28);
while(1);
}
液晶上显示的汉字,1秒上一次(或者叫刷新)
请教问题能出在哪里!谢谢!指点 |
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