單片機(jī)課程設(shè)計(jì)報(bào)告--基于單片機(jī)的交通燈控制系統(tǒng)(文件)
【正文】 DFH MOV R5,05 BBB: LCALL TIME01S ； DJNZ R5,BBB DJNZ R4,AH BL: MOV R7,20 ；東西方向亮綠燈20s程序 MOV R0,0F3H MOV P1,R0 LCALL TIME1S MOV R4,05 BH: MOV R0,0EBH ；東西方向亮黃燈 MOV P1,R0 MOV R5,05 BA: LCALL TIME01S ； DJNZ R5,BA MOV R0,0FBH MOV P1,R0 MOV R5,05 BB: LCALL TIME01S ； DJNZ R5,BB DJNZ R4,BH JMP AL TIME1S: MOV R3,50 ；延時(shí)1s CLR A ABC: MOV A,R7 LCALL XS DJNZ R3,ABC DJNZ R7,TIME1S RETTIME01S: MOV R7,05 ； CLR A BCD: MOV A,R4 LCALL XS DJNZ R7,BCD RETTIME10MS: MOV R2,20 ；鍵掃描10ms子程序 YS: MOV R6,248 DJNZ R6,$ DJNZ R2,YS RET XS: MOV R6,A ；延時(shí)20ms并輸出秒數(shù) MOV R1,40H MOV A,R6 MOV B,10 DIV AB MOV R1,A INC R1 MOV R1,B MOV DPTR,LIST MOV A,R1 MOVC A,A+DPTR MOV P0,A CLR LCALL TIME10MS SETB DEC R1 MOV DPTR,LI
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鄂ICP備17016276號(hào)-1