項(xiàng)目訓(xùn)練三門禁系統(tǒng)(編輯修改稿)
2025-04-22 05:25 本頁面
【文章內(nèi)容簡介】 INC R1 DJNZ R2, LP3 RET DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H DB 7FH,6FH,77H,7CH,39H,5EH,79H,71H 00H ST：MOV R0, 20H MOV R2,08H LP1： MOV R1,08H MOV A,@R0 LP2：RLC A MOV ,C CLR SETB DJNZ R1,LP2 INC R0 DJNZ R2,LP1 RET END方法二： ORG 0000H LJMP MAINMAIN: MOV SP,60H PORT EQU 0155H LCALL ST SJMP $XIANSHI: MOV R2, 08H MOV R0, 10H MOV R1, 20H MOV DPTR, PORTLP3: MOV A, @R0 MOVC A, @A+DPTR MOV @R1, A INC R0 INC R1 DJNZ R2, LP3 RET ST: MOV R0, 20H MOV R2,08H LP1: MOV R1,08H MOV A,@R0 LP2: RLC A MOV ,C CLR SETB DJNZ R1,LP2 INC R0 DJNZ R2,LP1 RET PORT 3FH,06H,5BH,4FH,66H,6DH,7DH,07H 7FH,6FH,77H,7CH,39H,5EH,79H,71H 00H END（3）將壓縮碼變非壓縮碼顯示出來。ORG 0100H MAIN：MOV SP,60H MOV 10H, 39H MOV 11H, 41H MOV 12H, 42H MOV 13H, 43H MOV 14H, 44H MOV 15H, 45H MOV 16H, 46H MOV 17H, 38H LCALL ASC LCALL XIANSHI LCALL ST SJMP $ ASC： MOV R2,08H MOV R0,10H MOV R1,20H LP4： MOV A, @R0 ANL A, 0FH MOV @R1, A INC R1 MOV A, @R0 SWAP A ANL A, 0FH MOV @R1, A INC R0 INC R1 DJNZ R2, Lp4 RETXIANSHI: MOV R2, 08H MOV R0, 10H MOV R1, 20HLP3： MOV A, @R0 ADD A, 06H MOVC A, @A+PC MOV @R1, A INC R0 INC R1 DJNZ R2, LP3 RET DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H DB 7FH,6FH,77H,7CH,39H,5EH,79H,71H 00H ST：MOV R0, 20H MOV R2,08H LP1：MOV R1,08H MOV A,@R0 LP2：RLC A MOV ,C CLR SETB DJNZ R1,LP2 INC R0 DJNZ R2,LP1 RET ENDh) 卡號顯示ID卡讀出11個(gè)字節(jié)的ASCII，要顯示卡號，需進(jìn)行數(shù)值轉(zhuǎn)換。（1）ID卡讀出的11個(gè)字節(jié)ASCII碼放在以30H開始的單元，先將ASCII碼轉(zhuǎn)換成16進(jìn)制數(shù)，因第一個(gè)字節(jié)是包裝頭，不參與轉(zhuǎn)換。其程序如下：LE: MOV R0, 30H ； ASCⅡ轉(zhuǎn)16進(jìn)制數(shù)子程序 MOV R2, 0AH ；10個(gè)字節(jié) LE4: MOV A, @R0 ACALL LE1 MOV @R0, A INC R0 DJNZ R2, LE4 RET LE1: CJNE A, 40H, L13 SJMP LE3 L13: JC LE2 ADD A, 09H LE2: ANL A, 0FH CLR C RETLE3: SETB C RET（2）把上面轉(zhuǎn)換的10個(gè)16進(jìn)制數(shù)，變成5個(gè)壓縮的16進(jìn)制數(shù)，30H放最高位，34H放最低位。LB: MOV A, 30H 。 裝配壓縮16進(jìn)制數(shù)子程序 SWAP A ADD A, 31H MOV 30H, A MOV A, 32H SWAP A ADD A, 33H MOV 31H, A NOP NOP MOV A, 34H SWAP A ADD A, 35H MOV 32H, A MOV A, 36H SWAP A ADD A, 37H MOV 33H, A NOP NOP MOV A, 38H SWAP A
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