單片機數(shù)字時鐘設計(編輯修改稿)
2025-07-26 22:01 本頁面
【文章內(nèi)容簡介】 屏 CALL WRC MOV A,38H ；設置液晶工作模式16*2行顯示5*7點陣8位數(shù)據(jù) CALL WRC MOV A,0CH ；開顯示不顯示光標 CALL WRC MOV A,06H ；整屏不移動，光標自動右移 CALL WRC MOV A,YH ；顯示位置 在1602第一行首 YH＝80H CALL WRC MOV A,32H ；以下為在第一行顯20 — － CALL WRD MOV A,30H CALL WRD MOV A,20H CALL WRD MOV A,20H CALL WRD MOV A,2DH CALL WRD MOV A,20H CALL WRD MOV A,20H CALL WRD MOV A,2DH CALL WRD MOV A,20H CALL WRD MOV A,20H CALL WRD MOV A,EH+2 ；以下在第二顯 ： ： CALL WRC MOV A,20H CALL WRD MOV A,20H CALL WRD MOV A,3AH CALL WRD MOV A,20H CALL WRD MOV A,20H CALL WRD MOV A,3AH CALL WRD MOV A,20H CALL WRD MOV A,20H CALL WRD CALL XS RETXS: CALL WRITEYEAR CALL WRITEWEEK CALL WRITEY CALL WRITER CALL WRITES CALL WRITEF CALL WRITEMCBUSY: PUSH ACC ；檢查忙 PUSH DPH PUSH DPL PUSH PSWWEIT: CLR RS SETB RW CLR E SETB E MOV A,P1 CLR E JB ,WEIT POP PSW POP DPL POP DPH POP ACC CALL DELAY RETWRC: CALL CBUSY ；寫命令字 CLR E CLR RS CLR RW SETB E MOV P1,A CLR E CALL DELAY RETWRD: CALL CBUSY ；寫數(shù)據(jù) CLR E SETB RS CLR RW SETB E MOV P1,A CLR E CALL DELAY RETDELAY: MOV R7,5LP1: MOV R6,0F8H DJNZ R6,$ DJNZ R7,LP1 RETWRB: MOV 40H,8H ；1302寫命令字LPW: MOV A,B RRC A MOV B,A MOV SIO,C SETB SCLK CLR SCLK DJNZ 40H,LPW RETRDB: MOV 40H,8 ；讀數(shù)據(jù)LPR: MOV C,SIO RRC A SETB SCLK CLR SCLK DJNZ 40H,LPR RETREAD: MOV R0,30H ；讀數(shù)據(jù) 存放在30H~36H MOV R7,7 MOV R1,81HLOOP2: CLR RST CLR SCLK SETB RST MOV B,R1 CALL WRB CALL RDB MOV @R0,A INC R0 INC R1 INC R1 SETB SCLK CLR RST DJNZ R7,LOOP2 RETDSINIT: CLR RST ；1302初始化子程序 CLR SCLK SETB RST MOV B,8EH CALL WRB MOV B,00H CALL WRB SETB SCLK CLR RST MOV R0,30H MOV R7,7 MOV R1,80H LOOP: CLR RST CLR SCLK SETB RST MOV B,R1 CALL WRB MOV A,@R0 MOV B,A CALL WRB INC R0 INC R1 INC R1 SETB SCLK CLR RST DJNZ R7,LOOP RETWRITES: MOV A,EH+2 ；1602顯示寫時 CALL WRC MOV A,32H MOV B,10H DIV AB ADD A,30H CALL WRD MOV A,B ADD A,30H CALL WRD RETWRITEF: MOV A,EH+5 ；1602顯示寫分 CALL WRC MOV A,31H MOV B,10H DIV AB ADD A,30H CALL WRD MOV A,B ADD A,30H CALL
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