51 microcontroller's control design of traffic lights

It is a 51-series microcontroller, says that the Mark logo is a key role. Below is a simulation map LED0 EQU P1 LED2 EQU P2 LED1 EQU P0 Mark Bit 00h Mark1 Bit 01h Time EQU 30H; time buffer SHI EQU 31H; Time Data Buffer! Key EQU P3.2 Key1 EQU P3.3 CTH EQU (65536-50000) / 256 CTL EQU (65536-50000) MOD 256 ORG 0000H JMP START ORG 0003H JMP INT_0 ORG 000BH JMP TIME0 ORG 0030H Start: MOV P1, # 00H MOV P0, # 0ffh MOV P2, # 0ffh Mov dptr, # ABC Mov sp, # 5fh Mov shi, # 20 MOV R0, SHI Mov R7, # 20 CLR Mark CLR Mark1 Mov TMOD, # 01H MOV TH0, # CTH; initial pointer MOV TL0, # CTL Setb EA Setb it0 Setb EX0 Setb ET0 Setb TR0 MOV Time, R0 Call Display Main: Mov led0, # 21h; North, red light CJNE R0, # 3, main Mov shi, # 04 Next: MOV R6, # 3 A1: MOV LED0, # 01h Call delay_500ms Mov led0, # 21h Call delay_500ms Djnz R6, A1 S1: JBC Mark, A2 SJMP S1 A2: MOV LED0, # 11h; bei huang deng liang Mov shi, # 20 JBC Mark, Main1 SJMP A2 MAIN1: MOV LED0, # 0CH; Xi Hong Deng Liang CJNE R0, # 3, main1 Mov shi, # 04 Next1: Mov r6, # 3 A3: MOV LED0, # 08h Call delay_500ms Mov led0, # 0ch Call delay_500ms Djnz R6, A3 S2: JBC Mark, A4 SJMP S2 A4: MOV LED0, # 0ah Mov shi, # 20 JBC Mark, Main SJMP A4 DELAY_500MS: MOV R5, # 20 K1: MOV R4, # 50 K2: MOV R3, # 250 DJNZ R3, $ Djnz R4, K2 Djnz R5, K1 RET Display: MOV A, TIME Mov b, # 10 Div AB MOVC A, @ a + dptr MOV LED2, A Mov A, B MOVC A, @ a + dptr MOV LED1, A RET ABC: DB 0C0H, 0F9H, 0A4H, 0B0H, 99H, 92H, 82H, 0F8H, 80H, 90H INT_0: PUSH ACC Push PSW Setb RS1 Setb RS0 Mov r5, # 70 K4: MOV R4, # 250 DJNZ R4, $ Djnz R5, K4 JB Key, ITT_2 Mov Time, # 20 Call Display ITT_1: MOV LED0, # 00010010B Call delay_500ms Mov led0, # 00H JNB Key, ITT_2 Call delay_500ms JB Key, ITT_1 ITT_2: JNB Key, $ POP PSW POP ACC Reti Time0: Push ACC Push PSW MOV TH0, # CTH; initial pointer MOV TL0, # CTL DJNZ R7, TIME1 Mov r7, # 20 DJNZ R0, TIME2 Setb Mark MOV R0, SHI Time2: MOV Time, R0 Call Display Time1: POP PSW POP ACC Reti End, read full text

Our other product:

Professional lightning protection system for Tower	Professional FM Radio Station Equipment Package	FMUSER FU-1000C 1000W FM Transmitter With USB Audio Input Interface
FMUSER 200W FM Radio Broadcasting Package	Hotel IPTV Solution	FMUSER FSN-1000T V5.0 1KW FM Radio Broadcast Transmitter