Share a security gate control program

A security door control program, using the wireless remote control mode to open the door, the stepping motor to perform an action. Using AT89C2051 microcontroller control, liweiqiang ; P3.3 connected buzzer ; P3.5 contact state of the switching signal input gate, a low-potential indicates the door is closed, the door is opened indicates a high potential ; P3.7 door remote control signal input, active low signal has doors. org 0000h ljmp start org 000bh ljmp int_0 start: mov sp, # 60h mov tmod, # 01h mov th0, # 0b0h mov tl0, # 0b8h mov r1, # 00h mov r0, # 00h setb ea setb et0 setb tr0 ; ============================================ main :; main loop start jb p3.5, kss; P35 = 0, indicates that the door has been closed down implementation. jnb 20H.0, kss; 20H.0 = 0 indicates manual lock switch at the unlock signal is detected. lcall gs; shut clr 20H.0; set 20H.0 = 0, indicates a locked door. kss: ;; manually unlock detection signal jnb p3.5, kst; if the door is manually opened from the inside lock execution flag cleared down. ajmp ddjm kst :; remote unlock detection signal jb p3.7, kmjs;? unlock signal is a low-level execution down lcall delay; delay jitter elimination jnb p3.7, kmjs; confirm whether the unlock button is released. Execution is down lcall ks; unlock setb tr0; after unlocking timing kmjs :; open timing cjne r0, # 30, main; door 15 seconds after detecting the timing status of the doors mov r0, # 00h clr tr0 ddjm: jb p3.5, $; wait for door it closed setb 20h.0; shut the door had locked the door after clearing the flag, clr tr0; stop counting jmp main; anti-back to the main program ; =========================================== int_0: push psw push aCC inc r1 cjne r1, # 14, ext inc r0 mov r1, # 00h ext: mov th0, # 0b0h mov tl0, # 0b8h pop acc pop psw reti ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; unlock subroutine ks: mov r0, # 3 loop1: mov p1, # 10101111b acall delay mov p1, # 11001111b acall delay mov p1, # 11010111b acall delay mov p1, # 10110111b acall delay djnz r0, loop1 mov p1, # 0ffh lcall delay1 lcall bz mov r1, # 00h setb tr0 RET ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; shut subroutine gs: lcall delay1 lcall delay1 lcall delay1 lcall delay1 mov r0, # 3 loop2: mov p1, # 10110111b acall delay mov p1, # 11010111b acall delay mov p1, # 11001111b acall delay mov p1, # 10101111b acall delay djnz r0, loop2 mov p1, # 0ffh lcall delay1 lcall bz lcall delay lcall bz RET ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; bz: clr p3.3 lcall delay1 setb p3.3 RET DELAY: mov r6, # 30 d1: mov r7, # 0 d2: djnz r7, d2 djnz r6, d1 RET delay1: mov r5, # 200 dd1: mov r4, # 100 dd2: mov r3, # 10 dd3: djnz r3, dd3 djnz r4, dd2 djnz r5, dd1 RET End, read full text

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