• 11.10

    1.  
    2.  
    3. .text 
    4. .global _start
    5. _start: 
    6.     ldr r0,=0x50000a28
    7.     ldr r1,[r0]
    8.     orr r1,r1,#(0x3<<4)
    9.      orr r1,r1,#(0x1<<1)
    10.     str r1,[r0]
    11.  
    12.     ldr r0,=0x50006000
    13.     ldr r1,[r0]
    14.     bic r1,r1,#(0x3<<20)
    15.     orr r1,r1,#(0x1<<20)
    16.     bic r1,r1,#(0x3<<16)
    17.     orr r1,r1,#(0x1<<16)
    18.     str r1,[r0]
    19.  
    20.  
    21.     ldr r0,=0x50007000
    22.     ldr r1,[r0]
    23.     bic r1,r1,#(0x3<<20)
    24.     orr r1,r1,#(0x1<<20)
    25.     str r1,[r0]
    26.  
    27.     ldr r0,=0x50003000
    28.     ldr r1,[r0]
    29.     bic r1,r1,#(0x3<<12)
    30.     orr r1,r1,#(0x1<<12)
    31.     str r1,[r0]
    32.  
    33.     ldr r0,=0x50006004
    34.     ldr r1,[r0]
    35.     bic r1,r1,#(0x1<<10)
    36.     bic r1,r1,#(0x1<<8)
    37.     str r1,[r0]
    38.  
    39.  
    40.     ldr r0,=0x50007004
    41.     ldr r1,[r0]
    42.     bic r1,r1,#(0x1<<10)
    43.     str r1,[r0]
    44.  
    45.     ldr r0,=0x50003004
    46.     ldr r1,[r0]
    47.     bic r1,r1,#(0x1<<6)
    48.     str r1,[r0]
    49.  
    50.     ldr r0,=0x50006008
    51.     ldr r1,[r0]
    52.     bic r1,r1,#(0x3<<20)
    53.     bic r1,r1,#(0x3<<16)
    54.     str r1,[r0]
    55.  
    56.     ldr r0,=0x50007008
    57.     ldr r1,[r0]
    58.     bic r1,r1,#(0x3<<20)
    59.     str r1,[r0]
    60.  
    61.     ldr r0,=0x50003008
    62.     ldr r1,[r0]
    63.     bic r1,r1,#(0x3<<12)
    64.     str r1,[r0]
    65.  
    66.     ldr r0,=0x5000600c
    67.     ldr r1,[r0]
    68.     bic r1,r1,#(0x3<<20)
    69.     bic r1,r1,#(0x3<<16)
    70.     str r1,[r0]
    71.     
    72.     ldr r0,=0x5000700c
    73.     ldr r1,[r0]
    74.     bic r1,r1,#(0x3<<20)
    75.     str r1,[r0]
    76.  
    77.     ldr r0,=0x5000300c
    78.     ldr r1,[r0]
    79.     bic r1,r1,#(0x3<<12)
    80.     str r1,[r0]
    81.  
    82. loop:
    83.     bl led1_on
    84.     bl delay
    85.     bl led1_off
    86.     bl delay
    87.     bl led2_on
    88.     bl delay
    89.     bl led2_off
    90.     bl delay
    91.     bl led3_on
    92.     bl delay 
    93.     bl led3_off
    94.     bl delay
    95.     bl bee_on
    96.     bl delay
    97.     bl bee_off
    98.     bl delay
    99.     b loop
    100.  
    101.  
    102. led1_on:
    103.     ldr r0,=0x50006014
    104.     ldr r1,[r0]
    105.     orr r1,r1,#(0x1<<10)
    106.     str r1,[r0]    
    107.     mov pc,lr
    108.  led1_off:
    109.     ldr r0,=0x50006014
    110.     ldr r1,[r0]
    111.     bic r1,r1,#(0x1<<10)
    112.     str r1,[r0]    
    113.     mov pc,lr
    114. led2_on:
    115.     ldr r0,=0x50007014
    116.     ldr r1,[r0]
    117.     orr r1,r1,#(0x1<<10)
    118.     str r1,[r0]    
    119.     mov pc,lr
    120. led2_off:
    121.     ldr r0,=0x50007014
    122.     ldr r1,[r0]
    123.     bic r1,r1,#(0x1<<10)
    124.     str r1,[r0]    
    125.     mov pc,lr
    126. led3_on:
    127.     ldr r0,=0x50006014
    128.     ldr r1,[r0]
    129.     orr r1,r1,#(0x1<<8)
    130.     str r1,[r0]    
    131.     mov pc,lr
    132. led3_off:
    133.     ldr r0,=0x50006014
    134.     ldr r1,[r0]
    135.     bic r1,r1,#(0x1<<8)
    136.     str r1,[r0]    
    137.     mov pc,lr
    138. bee_on:
    139.     ldr r0,=0x50003014
    140.     ldr r1,[r0]
    141.     orr r1,r1,#(0x1<<6)
    142.     str r1,[r0]    
    143.     mov pc,lr
    144. bee_off:
    145.     ldr r0,=0x50003014
    146.     ldr r1,[r0]
    147.     bic r1,r1,#(0x1<<6)
    148.     str r1,[r0]    
    149.     mov pc,lr
    150.  
    151. delay:
    152.     ldr r1,=0x10000000
    153. mm:
    154.     cmp r1,#0
    155.     subne r1,r1,#1
    156.     bne mm
    157.     mov pc,lr
    158. .end

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  • 原文地址：https://blog.csdn.net/benbai_v/article/details/134338786