led-3.lst

义隆单片机控制8个LED的渐明渐暗

     1      0006                port6  equ 0x06
     2                          
     3                    ;--------------------------------------
     4                          
     5                          org     0x00
     6 0000 1410                jmp     start
     7                          org     0x10
     8 0010               start:
     9 0010 18F7                mov     a,@0xf7     ;初始化
    10 0011 0006                iow     port6       ;P5口作为输出口
    11 0012 18F7                mov     a,@0x0f7
    12 0013 0046                mov     port6,a     ;点亮P5.0的灯
    13 0014 1019                call    delay       ;延时
    14 0015 1808                mov     a,@0x08 
    15 0016 0046                mov     port6,a     ;灯灭
    16 0017 1019                call    delay
    17 0018 1410                jmp     start
    18 0019               delay:                    ;延时
    19 0019 1814                mov     a,@20
    20 001A 0055                mov     0x15,a
    21 001B               delay1:
    22 001B 18FA                mov     a,@250
    23 001C 0056                mov     0x16,a
    24 001D               delay2:
    25 001D 0000                nop
    26 001E 05D6                djz     0x16
    27 001F 141B                jmp     delay1
    28 0020 05D5                djz     0x15
    29 0021 141D                jmp     delay2
    30 0022 0012                ret
    31                          end
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