LCD1602汇编显示程序

1、RSBIT P2.0;定义RS为P 2.0RWBIT P2.1;定义RW为P2.1EBIT P2.2;定义E为P2.2ORG 00HSJMP STARTORG0030HSTART:LCALL LCDINITMAIN:MOV A,#80H显示开及光标设置LCALL BUSYLCALL WRTCMOVR2,#04HMOVDPTR,#TAB1LCALL DELAY12/ 8LCALL WRTDMOV A,#0C0H显示开及光标设置LCALL BUSYLCALL WRTCMOVR2,#04HMOVDPTR,#TAB2LCALL DELAYLCALL WRTDLCALL DELAY1LCALL DELA

2、Y1MOV A,#01H 清屏LCALL BUSYLCALL WRTCMOV A,#80H显示开及光标设置LCALL BUSYLCALL WRTCMOVR2,#0FHMOVDPTR,#TAB4LCALL DELAYLCALL WRTDLCALL DELAY1LCALL DELAY1MOV A,#01H 清屏LCALL BUSYLCALL WRTCLJMP MAIN *5LCDINIT:初始化*LCALLDELAY;xx15msLCALLDELAYLCALLDELAYMOVA,#38H显示模式设置(8位数据线,LCALL WRTC16*2 5*7 点阵 )LCALL DELAY;xx5msMOV

3、A,#38HLCALL WRTCLCALL DELAY;xx5msMOVA,#38HLCALL WRTCLCALL DELAY;xx5msMOVA,#38HLCALL BUSYLCALL WRTCMOVA,#08HLCALL BUSYLCALL WRTCMOV A,#01H 清屏LCALL BUSYLCALL WRTCMOVA,#06 H显示光标移动设置LCALL BUSYLCALL WRTCMOV A,#0CH示开关控制，显示开，无光标，不闪烁。LCALL BUSYLCALL WRTCMOVA,#40H 写 CGRAM地址.LCALL BUSYLCALLWRTCMOVR2,#40HMOVDP

4、TR,#TAB；写 CGRAM字模.LCALL BUSYLCALL WRTDRET *WRTC:CLR RSCLR RWCLR EMOV P0,ALCALL DELAY ;xx5msSETB ELCALL DELAY ;xx5msCLR E写数据子程序*RET *5WRTD:MOV R1,#00HAGAIN:MOV A,R1MOVC A,A+DPTRSETB RSCLRRWCLREMOVP0,ALCALL DELAYSETB ELCALL DELAYCLR EINCR1MOVA,R1MOVB,R2 数; 据写完没有 .CJNE A,B,AGAINRET *5判忙子程序 *BUSY:PUSH A

5、CCCLRRSSETB RWTT0:SETB EMOV A,P0CLR EANL A,#80HJNZ TT0POP ACCRETTAB1:DB 00H,01H,02H,03HTAB2:DB 04H,05H,06H,07HTAB3:DB 03H,07H,0fH,1FH,1FH,1FH,1FH,1FHDB 18H,1EH,1FH,1FH,1FH,1FH,1FH,1FHDB 07H,1FH,1FH,1FH,1FH,1FH,1FH,1FHDB 10H,18H,1cH,1EH,1EH,1EH,1EH,1EHDB 0FH,07H,03H,01H,00H,00H,00H,00HDB 1fH,1FH,1FH,1FH,1FH,0FH,07H,01HDB 1fH,1FH,1FH,1FH,1FH,1CH,18H,00HDB 1CH,18H,10H,00H,00H,00H,00H,00HTAB4:DB "I LOVE YOU BABY"DELAY:MOV R6,#10D1:MOV R7