【正文】 CLR C CPL C MOV R5, 04H L4: RLC A JNC KEYIN INC R1 DJNZ R5, L4 CALL DISP MOV A, R3 CLR C CPL C RRC A MOV R3, A JC L3 JMP L2 鍵盤掃描與識別程序 KEYIN: MOV A, R1 XRL A, 0EH JZ X4 MOV A, R1 MOV A, 0FH JZ X3 MOV R7, 10 D1: MOV R6, 248 DJNZ R6, $ DJNZ R7, D1 D2: MOV A, P1 XRL A,R4 JZ D2 25 MOV A, R1 MOV DPTR, TABLE MOVC A, A+DPTR MOV R7, A XRL A, 0AH JZ SET0 MOV A, R7 XRL A, 0BH JZ START MOV A, R7 XRL A, 0CH JZ L2 MOV A, R7 XRL A, 0DH JZ L2 MOV A, R7 XCH A, 36H XCH A, 37H XCH A, 38H XCH A, 39H XCH A, 3AH XCH A, 3BH CALL DISP JMP L2 X3: JMP DISP2 X4: JMP COMP 數(shù)碼顯示電路 DISP: MOV R0, 3BH DISP1: MOV A, R0 ADD A, 50H MOV P0, A CALL DELAY DEC R0 MOV A, R0 ADD A, 40H MOV P0, A CALL DELAY DEC R0 MOV A, R0 ADD A, 30H MOV P0, A CALL DELAY DEC R0 MOV A, R0 26 ADD A, 20H MOV P0, A CALL DELAY DEC R0 MOV A, R0 ADD A, 10H MOV P0, A CALL DELAY DEC R0 MOV A, R0 ADD A, 00H MOV P0, A CALL DELAY RET DISP2: MOV R0, 35H CALL DISP1 MOV A, P1 XRL A,R4 JZ DISP2 CALL DELAY JMP START 掉電存儲子程序 O9346: SETB CS SETB DI SETB CLK CALL DELAY1 CLR CLK CALL DELAY2 MOV DPTR, JPTBL46 JMP A+DPTR JPTBL46: AJMP SREAD AJMP SWRITE AJMP SEWEN AJMP SEWDS SREAD: MOV A, ADR46 ADD A, 80H CALL SDT46 CALL RDT46 MOV 3CH, A CALL RDT46 MOV 3DH, A JMP EX9346 SWRITE: MOV A, ADR46 ADD A, 40H 27 CALL SDT46 MOV A, 3CH CALL SDT46 MOV A, 3DH CALL SDT46 JMP EX9346 SEWEN: MOV A, 30H CALL SDT46 JMP EX9346 SEWDS: CLR A CALL SDT46 EX9346: CLR CS RET SDT46: MOV 22H, 8 SD1: RLC A MOV DI, C CALL DELAY1 CLR CLK CALL DELAY2 DJNZ 22H, SD1 RET RDT46: MOV 22H, 8 RD1: SETB CLK CALL DELAY1 CLR CLK CALL DELAY2 MOV C, DO RLC A DJNZ 22H, RD1 RET 設(shè)定密碼程序 SET0: MOV R2, 06H MOV RO, 36H MOV R1, 30H E1: MOV A, R0 XCH A, R1 INC R0 INC R1 DJNZ R2, E1 JB FLG0, E3 MOV ADR46, 00 MOV A, EWEN CALL TO9346 MOV 3CH, 01H 28 MOV 3DH, 00H MOV A, WRITE CALL TO9346 MOV A, EWDS CALL TO9346 E3: MOV R0, 35H MOV ADR46, 01H MOV R2, 03 E4: MOV A, EWEN CALL TO9346 MOV 3CH, R0 DEC R0 MOV 3DH, R0 MOV A, WRITE CALL TO9346 MOV A, EWDS CALL TO9346 DEC R0 INC ADR46 DJNZ R2, E4 CALL DELAY E2: JMP START 密碼比較程序 COMP: MOV R1, 3BH MOV R0, 35H MOV R2, 06H C1: MOV A, R1 MOV A, R0 JNZ C3 DEC R1 DEC R0 DJNZ R2, C1 MOV A, 0FEH MOV P2, A MOV R2, 200 C2: MOV R6, 248 DJNZ R6, $ DJNZ R2, C2 C3: JMP START 29 延時子程序 DELAY: MOV R7, 06 D3: MOV R6, 248 DJNZ R6, $ DJNZ R7, D3 RET DELAY1: MOV R7, 0FH DJNZ R7, $ RET DELAY2: MOV R7, 8FH DJNZ R7, $ RET 顯示子程序 TABLE: DB 01H, 02H, 03H, 0CH DB 04H, 05H, 06H, 0DH DB 07H, 08H, 09H, 0EH DB 0AH, 00H, 0BH, 0FH DB 02H, 02H, 01H, 05H, 08H, 02H END 30 第 5 章 軟、硬件調(diào)試 硬件調(diào)試 調(diào)試可分為硬件調(diào)試和軟件調(diào)試， 有許多故障只有通過軟硬件聯(lián)合調(diào)試才能發(fā)現(xiàn)。 （ 2）聯(lián)機(jī)調(diào)試：聯(lián)機(jī)前先切斷電源，把仿真插頭插到樣機(jī)的單片機(jī)插座上，檢查一下開發(fā)機(jī)與樣機(jī)之間的電源、接地是否良好。對于模塊結(jié)構(gòu)程序，要一個個子程序分別調(diào)試。掌 握好單片機(jī)應(yīng)用系統(tǒng)的一般設(shè)計方法，對于單片機(jī)應(yīng)用系統(tǒng)的工程設(shè)計與開發(fā)，有十分重要意義。 莫正康 ： 《 電力電子應(yīng)用技術(shù) 》 ， 機(jī)械工業(yè)出版社 2020 年第