【正文】 mov r0,0FDh LOOP1302: mov r1,a DEC r1 djnz r0,loop1302 mov KEY_CNT,80h mov p0,0ffh LCALL INITIAL。CLR KEY_BUSY 。顯示第一屏 ，字符 MOV COM,01H LCALL LCD_W_CMD 。顯示第二屏 ，時(shí)間 RUN2:LCALL GET1302 LCALL DISPLAY2 。開(kāi)關(guān)標(biāo)志忙么？如忙 則一直檢測(cè)開(kāi)關(guān)狀態(tài)，不忙則顯示時(shí)間 */ MD1: JNB HWX_FLG, MD0 SETB ALARM CLR HWX_FLG LCALL HWX_SCAN MD0:JB HWX_BUSY, MD1 SJMP run2 RET RUN18B20: MOV SP,0DFH MOV DPTR,TAB1820 MOV A,00H MOV R1,0FFH MOV R0,0FDHLOOP1820: MOV R1,A DEC R1 DJNZ R0,LOOP1820。字符顯示retSCAN_KEY: SETB SETB SETB SETB MOV A, KEY_PORT CPL A ANL A, 0F0H RET 。保護(hù)鍵值 WAIT1: LCALL SCAN_KEY LCALL DELAY100US JNZ WAIT1。 JB , ADD_ONE 。 LJMP SUB_ONE LX1: JNB ,NO_KEY1 LJMP SETUP 。 開(kāi)關(guān)狀態(tài)，根據(jù)此狀態(tài)，確定修改相應(yīng)值 RL A MOV KEY_CNT,A MOV A, KEY_CNT JB , TO_YX1 JB , TO_MX1 JB , TO_DX1 JB , TO_WX1 JB , TO_HX1 JB , TO_MNX1 JB , TO_SX1 JB , X0 X0: mov key_t, 80h RETTO_YX1:MOV COM,83H LCALL LCD_W_CMD。根據(jù)開(kāi)關(guān)狀態(tài)去去對(duì)應(yīng)操作 RET TO_YR1: MOV A, YEAR ADD A, 01H DA A MOV YEAR, A LCALL DISPLAY2 RET TO_MO1: MOV A, MONTH ADD A, 01H DA A MOV MONTH, A CJNE A, 13H, TO_MO11 MOV MONTH, 01H TO_MO11: LCALL DISPLAY2 RET TO_DA1: MOV A, DAY ADD A, 01H DA A MOV DAY, A CJNE A, 32H, TO_DA11 MOV DAY, 01H TO_DA11:LCALL DISPLAY2 RET TO_WK1:MOV A, WEEK ADD A, 01H DA A MOV WEEK, A CJNE A, 08H, TO_WK11 MOV WEEK, 01H TO_WK11: LCALL DISPLAY2 RET TO_H1: MOV A, HOUR ADD A, 01H DA A MOV HOUR, A CJNE A, 24H, TO_H11 MOV HOUR, 00H TO_H11: LCALL DISPLAY2 RET TO_M1: MOV A, MIN ADD A, 01H DA A MOV MIN, A CJNE A, 60H, TO_M1a MOV MIN, 00H TO_M1a: LCALL DISPLAY2 RET TO_S1: MOV A, SEC ADD A, 01H DA A MOV SEC, A CJNE A, 60H, TO_S1a MOV SEC, 00H TO_S1a: LCALL DISPLAY2 RET SUB_ONE: MOV A, KEY_CNT JB , TO_YR2 JB , TO_MO2 JB , TO_DA2 JB , TO_WK2 JB , TO_H2 JB , TO_M2 JB , TO_S2 JB , x2 x2: mov key_t, 80h RET TO_YR2:MOV A, YEAR ADD A, 99H DA A MOV YEAR, A LCALL DISPLAY2 RET TO_MO2: MOV A, MONTH ADD A, 99H DA A MOV MONTH, A CJNE A, 00H, TO_MO22 MOV MONTH, 12H TO_MO22: LCALL DISPLAY2 RET TO_DA2: MOV A, DAY ADD A, 99H DA A MOV DAY, A CJNE A, 00H, TO_DA22 MOV DAY, 31H TO_DA22: LCALL DISPLAY2 RET TO_WK2:MOV A, WEEK ADD A, 99H DA A ANL A, 0FH MOV WEEK, A CJNE A, 00H, TO_WK22 MOV WEEK, 07H TO_WK22: LCALL DISPLAY2 RET TO_H2: MOV A, HOUR ADD A, 99H DA A MOV HOUR, A CJNE A, 99H, TO_H22 MOV HOUR, 23H TO_H22: LCALL DISPLAY2 RET TO_M2: MOV A, MIN ADD A, 99H DA A MOV MIN, A CJNE A, 99H, TO_M2a MOV MIN, 59H TO_M2a: LCALL DISPLAY2 RET TO_S2: MOV A, SEC ADD A, 99H DA A MOV SEC, A CJNE A, 99H, TO_S2a MOV SEC, 59H TO_S2a: LCALL DISPLAY2 RET SETUP: CLR KEY_BUSY SETUP1: MOV KEY_CNT, 80H LCALL SET1302 LCALL GET1302 LCALL DISPLAY2 LJMP RUN2 RETINITIAL:MOV COM,3CH LCALL LCD_W_CMD MOV COM,0FH LCALL LCD_W_CMD MOV COM,01H LCALL LCD_W_CMD MOV COM,06H LCALL LCD_W_CMD MOV COM,80H LCALL LCD_W_CMD RETSET1302:MOV A,8EH MOV B,00H LCALL CLOCK_WR MOV A,8CH MOV B,YEAR LCALL CLOCK_WR MOV A,88H MOV B,MONTH LCALL CLOCK_WR MOV A,86H MOV B,DAY LCALL CLOCK_WR MOV A,8ah MOV B,week LCALL CLOCK_WR MOV A,84H MOV B,HOUR LCALL CLOCK_WR MOV A,82H MOV B,MIN LCALL CLOCK_WR MOV A,80H MOV B,SEC LCALL CLOCK_WR RETGET1302:MOV A,81H LCALL CLOCK_RD MOV SEC,A MOV A,83H LCALL CLOCK_RD MOV MIN,A MOV A,85H LCALL CLOCK_RD MOV HOUR,A MOV A,87H LCALL CLOCK_RD MOV DAY,A MOV A,89H LCALL CLOCK_RD MOV MONTH,A MOV A,8DH LCALL CLOCK_RD