单片机实验程序汇总.doc
9页
1、 定时器 ORG 0000HAJMP MAINORG 001BHLJMP TIMET1ORG 0050HMAIN:MOV SP,#56HMOV TCON,#40HMOV IE,#88HMOV TMOD,#10HMOV TH1,#4CHMOV TL1,#00HSETB TR1MOV R2,#00H MOV R3,#00HHERE:SJMP HERETIMET1:PUSH ACCPUSH PSWINC R2CLR TR1MOV TH1,#4CHMOV TL1,#00HSETB TR1CJNE R2,#14H,NEXTMOV R2,#00HINC R3MOV A,R3ANL A,#07HMOV R3,AMOV DPTR,#TABMOVC A,@A+DPTRMOV P1,ANEXT:POP PSWPOP ACCRETITAB:DB 05H,0AH,50H,0A0H,55H,0AAH,00HEND2、 计数器ORG 0000HAJMP MAINORG 001BHSJMP INTT1ORG 0030HMAIN:MOV SP,#56HMOV IE,#88HMOV TMOD,#14HMOV TH1,#4CHMOV TL1,#00HMOV TH0,#00HMOV TH1,#00HMOV R0,#00HSETB TR1SETB TR0SJMP $INTT1:PUSH ACCPUSH PSWINC R0CLR TR1CJNE R0,#100,NEXTMOV R0,#00HMOV A,TL0CPL AMOV P1,ACLR ANEXT:CLR TR0MOV TH1,#4CHMOV TL1,#00HMOV TH0,#00HMOV TL0,#00HSETB TR1SETB TR0POP PSWPOP ACCRETIEND3、 键盘显示学号MAIN:MOV DPTR,#0F22BHMOV A,#80HMOVX @DPTR,ASTART:MOV 78H,#01HMOV 79H,#01HMOV 7AH,#01HMOV 7BH,#00HMOV 7CH,#00HMOV 7DH,#02HMOV 7EH,#00HMOV 7FH,#04HMOV R2,#0FEHMOV R0,#78H LOOP:MOV DPTR,#0F228HMOV A,R2MOVX @DPTR,AMOV A,R2RL AMOV R2,AMOV A,@R0MOV DPTR,#TABMOVC A,@A+DPTRMOV DPTR,#0F229HMOVX @DPTR,AMOV R4,#0FFHDELAY:DJNZ R4,DELAYMOV A, #00HMOVX @DPTR, AINC R0CJNE R0,#80H, NEXTMOV R0, #78HNEXT: AJMP LOOPTAB:DB 3FHDB 06HDB 5BHDB 4FHDB 66HDB 6DHDB 7DH END4、 X点阵显示ORG 0000HMOV R2,#01HMOV R3,#80HMOV R4,#7FHMOV R5,#0FEHLOOP:MOV DPTR,#0F200HMOV A,R2MOVX @DPTR,AMOV A,R3INC DPTRMOVX @DPTR,AMOV A,R4INC DPTRMOVX @DPTR,AMOV A,R5INC DPTRMOVX @DPTR,AMOV R6,#0FFHDELAY:DJNZ R6,DELAYMOV A,R2RL AMOV R2,AMOV A,R3RR AMOV R3,AMOV A,R4RR AMOV R4,AMOV A,R5RL AMOV R5,AAJMP LOOP5、 键盘扫描MAIN: MOV DPTR,#0F22BH MOV A,#90H MOVX @DPTR,A ACALL KEY MOV DPTR,#0F22BH MOV A,#80H MOVX @DPTR,A MOV R1,#0FEH MOV R0,#78H ACALL DISPLAY SJMP MAINKEY: ACALL KS JNZ LK1 RETLK1: ACALL DELAY ACALL DELAY ACALL KS JNZ LK2 RETLK2: MOV R2,#0FEH MOV R4,#00HLK4: MOV DPTR,#0F22AH MOV A,R2 MOVX @DPTR,A MOV DPTR,#0F228H MOVX A,@DPTR JB ACC.0, LONE MOV A,#00H AJMP LKPLONE: JB ACC.1, LTWO MOV A,#01H AJMP LKPLTWO: JB ACC.2, LTHREE MOV A,#02H AJMP LKPLTHREE: JB ACC.3, LFOUR MOV A,#03H AJMP LKPLFOUR: JB ACC.4, LFIVE MOV A,#04H AJMP LKPLFIVE: JB ACC.5, LSIX MOV A,#05H AJMP LKPLSIX: JB ACC.6, LSEVEN MOV A,#06H AJMP LKPLSEVEN: JB ACC.7, NEXT MOV A,#07HLKP: ADD A,R4 PUSH ACCLK3: ACALL DELAY ACALL KS JNZ LK3 POP ACC MOV 78H,A RETNEXT: MOV R4,#08H MOV A,R2 JNB ACC.1, KND RL A MOV R2,A AJMP LK4KND: AJMP KEYKS: MOV DPTR, #0F22AH MOV A,#00H MOVX @DPTR,A MOV DPTR,#0F228H MOVX A,@DPTR CPL A RETDELAY: MOV R6,#0CHDELAY1: MOV R7,#0FAH DJNZ R7,$ DJNZ R6,DELAY1 RETDISPLAY:MOV DPTR,#0F228HMOV A,R1MOVX @DPTR,ARL AMOV R1,AMOV A,@R0MOV DPTR,#TABMOVC A, @A+DPTRMOV DPTR,#0F229HMOVX @DPTR,AMOV R3,#00HDELAYDIS: DJNZ R3, DELAYDISCJNE R0,#7FH,NEXTDISMOV R0,#77HNEXTDIS: INC R0 MOV DPTR,#0F229HMOV A,#00HMOVX @DPTR,ARETTAB: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH DB 6FH,77H,7CH,39H,5EH,79H,71H,00HEND交通灯ORG 0000HLOOP:MOV R2, #14HMOV R3, #03HMOV R5, #03HMOV A, #0FHMOV P1, ALOOP3:LCALL DELAYDJNZ R2, LOOP3MOV A, #96H MOV P1, AMOV R2, #14HLOOP4:LCALL DELAYDJNZ R2, LOOP4LOOP1:MOV A, #96HMOV P1, ALCALL DELAYMOV A, #9FHMOV P1, ALCALL DELAYDJNZ R5, LOOP1MOV A, #06HMOV P1, A MOV R2, #14HLOOP5:LCALL DELAYDJNZ R2, LOOP5MOV A, #69HMOV P1, AMOV R2, #14HLOOP6:LCALL DELAYDJNZ R2, LOOP6LOOP2:MOV A, #69HMOV P1, ALCALL DELAYMOV A, #6FHMOV P1, A LCALL DELAYDJNZ R3, LOOP2MOV A, #09HMOV P1, AMOV R2, #14HLOOP7:LCALL DELAYDJNZ R2, LOOP7LJMP LOOPSJMP $DELAY: MOV R0,#00H DELAY1: MOV R1,#0B3H DJNZ R1,$ DJNZ R0,DELAY1 RETEND。
