arm 点灯实验代码以及现象

.text 
.global _start
_start: 
@1.设置GPIOE寄存器的时钟使能  RCC_MP_AHB4ENSETR[4]->1     0x50000a28
LDR R0,=0x50000A28
LDR R1,[R0]
ORR R1,R1,#(0x11     0x50000a28
LDR R0,=0x50000A28
LDR R1,[R0]
ORR R1,R1,#(0x101   0x50006000
LDR R0,=0x50006000
LDR R1,[R0]
BIC R1,R1,#(0x30   0X50006004
LDR R0,=0x50006004
LDR R1,[R0]
BIC R1,R1,#(0x100   0X50006008
LDR R0,=0x50006008
LDR R1,[R0]
BIC R1,R1,#(0x300  0X5000600C
LDR R0,=0x5000600c
LDR R1,[R0]
BIC R1,R1,#(0x301   0x50007000
LDR R0,=0x50007000
LDR R1,[R0]
BIC R1,R1,#(0x30   0X50007004
LDR R0,=0x50007004
LDR R1,[R0]
BIC R1,R1,#(0x100   0X50007008
LDR R0,=0x50007008
LDR R1,[R0]
B服务器托管网IC R1,R1,#(0x300  0X5000700C
LDR R0,=0x5000700c
LDR R1,[R0]
BIC R1,R1,#(0x301   0x50006000
LDR R0,=0x50006000
LDR R1,[R0]
BIC R1,R1,#(0x30   0X50006004
LDR R0,=0x50006004
LDR R1,[R0]
BIC R1,R1,#(0x100   0X50006008
LDR R0,=0x50006008
LDR R1,[R0]
BIC R1,R1,#(0x300  0X5000600C
LDR R0,=0x5000600c
LDR R1,[R0]
BIC R1,R1,#(0x31(高电平)  0(低电平)    0X50006014

@LED1亮灭交替
loop:
    @亮
    LDR R0,=0X5000服务器托管网6014
    LDR R1,[R0]
    ORR R1,R1,#(0x1

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