單片機(jī)作息時(shí)間控制鐘(編輯修改稿)
2024-08-26 00:26 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 5FFFHMOV A,0DCH 。將顯示RAM全部置1MOVX @DPTR,AWAIT: MOVX A,@DPTRJB ,WAIT ；清除完畢MOV A,00H ；設(shè)置為8*8左邊輸入MOVX @DPTR,AMOV A,34H ；20分頻MOVX @DPTR,AMOV R2,6 ；輸入是6位數(shù)MOV R1,39H ；顯示數(shù)據(jù)存放首地址CLEAR:MOV @R1,00HINC R1DJNZ R2,CLEAR ；全部清零LCALL DISPMOV R3,06HKEYIN: JNB SIGN,KEYINCLR SIGN LCALL DISP ；掃描到鍵盤輸入了一個(gè)新字符則調(diào)用顯示DJNZ R3,KEYINCLR EX1SETB TR0 ；時(shí)鐘0啟用LOOP: JNB 00H,NEXT ；00H作1秒到標(biāo)志CLR 00HACALL T0SERVE ；調(diào)用時(shí)間步進(jìn)子程序LCALL RING ；調(diào)用鈴聲時(shí)間對(duì)比子程序LCALL DISP ；調(diào)用顯示子程序NEXT: SJMP LOOP。*************************TIME0: DJNZ 31H,CCCMOV 31H,250DJNZ 32H,CCCMOV 32H,16SETB 00HCCC: RETI T0SERVE:MOV A,39HADD A,01H ；秒數(shù)加一MOV 39H,ACJNE A,0AH,EXIT MOV 39H,00H ；秒的個(gè)位逢十進(jìn)一MOV A,3AHADD A,01HMOV 3AH,ACJNE A,06H,EXITMOV 3AH,00H ；秒的十位逢六進(jìn)一MOV A,3BHADD A,01HMOV 3BH,ACJNE A,0AH,EXITMOV 3BH,00H ；分鐘的個(gè)位逢十進(jìn)一MOV A,3CHADD A,01HMOV 3CH,ACJNE A,06H,EXITMOV 3CH,00H ；分鐘的個(gè)位逢六進(jìn)一MOV A,3EHSWAP AADD A,3DH ；合并小時(shí)數(shù)ADD A,01HDA A MOV R7,AANL
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