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[旧帖] [原创]STM32汇编练手红外+数码管+PWM 0.00雪花
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发表于: 2016-4-24 19:28 2035
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一个月没碰代码，最近几天练了练手
.thumb
.syntax unified
.section .data
.align 4
shumaguanmabiao: .byte 0x03,0x9f,0x25,0x0d,0x99,0x49,0x41,0x1f,0x01,0x09
hongwaimabiao: .int 0xba45ff00,0xb946ff00,0xb847ff00,0xbb44ff00,0xbf40ff00,0xbc43ff00,0xf807ff00,0xea15ff00,0xf609ff00,0xe916ff00,0xe619ff00,0xf20dff00,0xf30cff00,0xe718ff00,0xa15eff00,0xf708ff00,0xe31cff00,0xa55aff00,0xbd42ff00,0xb54aff00
shuaxinbiao: .byte 0x40,0x20,0x10,0x08,0x40,0x20,0x10,0x08
caidian: .word zhucaidan +1,dd1 +1,dd2 +1,dd3 +1,dd4 +1,dd5 +1,dd6 +1,dd7 +1,dd8 +1,dd9 +1,dd10 +1,dd11 +1,dd12 +1,dd13 +1,dd14 +1,dd15 +1,dd16 +1,dd17 +1,dd18 +1,dd19 +1,dd20 +1,dd21 +1
.equ STACKINIT, 0x20005000
.equ systickbiaozhi, 0x20000300
.section .text
xiangliangbiao:
.word STACKINIT
.word _start + 1
.word _nmi_handler + 1
.word _hard_fault + 1
.word _memory_fault + 1
.word _bus_fault + 1
.word _usage_fault + 1
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word systickdingshiqi +1
.word 0 @WWDG 0
.word 0 @PVD 1
.word 0 @TAMPER 2
.word 0 @RTC 3
.word 0 @FLASH 4
.word 0 @RCC 5
.word 0 @EXTI0 6
.word 0 @EXTI1 7
.word 0 @EXTI2 8
.word 0 @EXTI3 9
.word 0 @EXTI4 10
.word 0 @DMA11 11
.word 0 @DMA12 12
.word 0 @DMA13 13
.word 0 @DMA14 14
.word 0 @DMA15 15
.word 0 @DMA16 16
.word 0 @DMA17 17
.word 0 @ADC1_2 18
.word 0 @USB_HP_CAN1_TX 19
.word 0 @USB_LP_CAN1_RX0 20
.word 0 @CAN1_RX1 21
.word 0 @CAN1_SCE 22
.word 0 @EXTI9_5 23
.word 0 @TIM1_BRK 24
.word 0 @TIM1_UP 25
.word 0 @TIM1_TRG_COM 26
.word 0 @TIM1_CC 27
.word tim2dingshiqi +1 @TIM2 28
.word 0 @TIM3 29
.word 0 @TIM4 30
.word 0 @I2C1_EV 31
.word 0 @I2C1_ER 32
.word 0 @I2C2_EV 33
.word 0 @I2C2_ER 34
.word 0 @SPI1 35
.word 0 @SPI2 36
.word 0 @USART1 37
.word 0 @USART2 38
.word 0 @USART3 39
.word 0 @EXTI15_10 40
.word 0 @RTCAlarm_IRQ 41
.word 0 @USBWakeUp 42
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0 @BootRAM
_start:
ldr r0, = 0x40010004
ldr r1, = 0x02000000
str r1, [r0]
str r1, [r0, # 0x04]
ldr r0, = 0x40021000
ldr r1, = 0x14D83
str r1, [r0]
gsszbz:
ldr r2, [r0]
ldr r1, = 0x20000
tst r1, r2 @HSE高速时钟标志位
bne rccchushihua
b gsszbz
rccchushihua:
ldr r0, = 0x40022000
mov r1, # 0x00000032
str r1, [r0] @FLASH缓冲 缓冲开启
ldr r0, = 0x40021004
ldr r1, = 0x1D8400
str r1, [r0]
ldr r0, = 0x40021000
ldr r1, = 0x1033D03
str r1, [r0]
chaxun:
ldr r2, [r0]
ldr r1, = 0x2000000
tst r1, r2
bne rccgg @等待PLL稳定
b chaxun
rccgg:
ldr r0, = 0x40021004
ldr r1, = 0x1D8402
str r1, [r0] @ PLL作为系统时钟
ldr r0, = 0x40010004
ldr r1, = 0x02000000
str r1, [r0]
neicunqingling: @ 无聊把内存清0
ldr r0, = 0x20000000
ldr r2, = 0x4fff @ 区域是0X4FFF大的地方
mov r1, # 0 @ 写0
qingling_xunhuan:
str r1, [r0], 4
subs r2, # 1
bne qingling_xunhuan @ 循环清0
chushihuayixieshuju: @初始化一些数据
ldr r0, = 0x200004fc
ldr r1, = 0x2200a000
str r1, [r0]
ldr r0, = 0x2000001c
ldr r1, = 0xffffff
str r1, [r0]
ldr r5, = 0x20000024 @ 22000480
ldr r1, = 0x00110001
ldr r2, = 0x00010001
ldr r3, = 0x00010101
str r1, [r5]
str r2, [r5, # 4]
str r3, [r5, # 8]
@ dma
ldr r0, = 0x20000600
ldr r1, = 500
str r1, [r0]
systick:
@0xe000e010 SYSTICK控制状态寄存器
@0=定时器使能
@1=（1倒数到0发出异常请，0无动作）
@2=（0外部始终1内核时钟）
@16= 如果赏赐读取本寄存器后SYSTICK已经数到0则该位为1如果读取该位则清0
@0xe000e014 重载值寄存器 数到0将要被重载的值
@0xe000e018 当前值，写清0
@0e000e01c
@0-23 10MS的时间内倒计数的格数
@ 30=(1教准不是准确的10MS)（0教准是准确的10MS）
ldr r0, = 0xe000e010
mov r1, # 0
str r1, [r0] @ 关掉SYSTICK
ldr r1, = 9000 @ 重载数
str r1, [r0, # 4] @ 写进重载数
str r1, [r0, # 8] @ 清0当前数
ldr r3, = 0xe000ed23 @systick优先级
mov r1, # 240
str r1, [r3]
mov r1, # 0
str r1, [r0] @ 开定时器
waisheshizhong:
@AHBENR=0x40021014
@0=DMA1,1=DMA2,2=SRAMEN,4=FLITFEN,6=CRCEN,8=FSMCEN,10=SDIOEN
ldr r0, = 0x40021014
mov r1, # 0x15
str r1, [r0]
@APB2_ENR=0X40021018 0(AFIO)1(保留)2(PA)3(PB)4(PC)5(PD)6(PE)78(保留)
@9(ADC1)10(ADC2)11(TIM1)12(SPI1)13(保留)14（USART1）15(保留)
ldr r0, = 0x40021018 @ APB2_ENR
ldr r1, = 0x83c
str r1, [r0]
@APB1_ENR=0X4002101C
@0=TIM2,1=TIM3,2=TIM4,3=TIM5,4=TIM6,5=TIM7,11=WWDG
@14=SP12,15=SP13,17=UART3,19=UART4,20=UART5
@21=I2C,22=I2C2,23=USB,25=CAN,27=BKPT,28=PWR,29=DACEN
ldr r0, = 0X4002101C @ APB1_ENR
ldr r1, = 0x3f
str r1, [r0]
zhongduankongzhi:
@SETENA0=0XE000E100,SETENA1=0XE000E104 @中断使能
@CLRENA0=0XE000E180,CLRENA1=0XE000E184 @中断除能
@SETPEND0=0XE000E200,SETPPEND1=0XE000E204 @中断悬起
@CLRPEND0=0XE000E280,CLRPEND1=0XE000E284 @中断解悬
@ACTIVE0=0XE000E300,ACTIVE1=0XE000E304 @ 中断活动状态
@0XE000E400-0XE000E43C 中断优先级阵列每个占8位
@0XE000ED00=CPUID，0XE000ED04=中断控制及状态寄存器
@0xe000ed08=向量表偏移，0xe000ed0c=应用程序中断及复位
@0xe000ed10=系统控制，0XE000ED14=配置与控制
@0xe000ed18-0xe000ed23=系统异常优先级阵列
ldr r0, = 0xe000ed0c
ldr r1, = 0x5fa0500
str r1, [r0]
ldr r0, = 0xe000e400
mov r1, # 0xc0
str r1, [r0, # 28]
ldr r0, = 0xe000e100 @ 中断使能
ldr r1, = 0x10000000
str r1, [r0]
dmachushihua:
DMA1= 0x40020000
@+0=LSR,+4=IFCR,
@+8=CCR1,+c=CNDTR1,+10=CPAR1+14=CMAR1,
@+1c=CCR2,+20=CNDTR2,+24=CPAR2,+28=CMAR2
@+30=CCR3,+34=CNDTR3,+38=CPAR2,+3c=CMAR3
@+44=CCR4,+48=CNDTR4,+4c=CPAR4,+50=CMAR4
@+58=CCR5,+5c=CNDTR5,+60=CPAR5,+64=CMAR5
@+6C=CCR6,+70=CNDTR6,+74=CPAR6,+78=CMAR6
@+80=CCR7,+84=CNDTR7,+88=CPAR7,+8c=CMAR7
ldr r0, = 0x40020000
ldr r1, = 0x40000834
str r1, [r0, # 0x10]
ldr r1, = 0x20000600
str r1, [r0, # 0x14]
ldr r1, = 0x8f
str r1, [r0, # 0x0c]
ldr r1, = 0x2a31
str r1, [r0, # 0x8]
timdingshiqi:
@tim1=0x40012c00
@+0=CR1 控制寄存器
@+4=CR2 控制寄存器2
@+8=SMCR 从模式控制寄存器
@+c=DIER 中断使能寄存器
@+10=SR 状态寄存器
@+14=EGR 事件产生寄存器
@+18=CCMR1 捕获/比较模式寄存器1
@+1C=CCMR2 捕获/比较模式寄存器2
@+20=CCER 捕获/比较使能寄存器
@+24=CNT 计数器
@+28=PSC 预分频器
@+2C=ARR 重载寄存器
@+30=RCR 重复计数寄存器
@+34=CCR1 捕获/比较寄存器1
@+38=CCR2 捕获/比较寄存器2
@+3C=CCR3 捕获/比较寄存器3
@+40=CCR4 捕获/比较寄存器4
@+44=BDTR 刹车/死区寄存器
@+48=DCR DMA控制器
@+4C=DMAR 连续模式的DMA地址
@TIM2=0x40000000
@18=CCMR1,18=OCMR1,1C=CCMR2,1C=OCMR2
@CNT与CCR比较占空，ARR与PSC决定频率。主频除以PSC=计数频率
ldr r0, = 0x40000000 @ tim2
ldr r1, = 720
str r1, [r0, # 0x28] @ 分频
ldr r1, = 0xffffff
str r1, [r0, # 0x2c] @ 重载
mov r1, # 2
str r1, [r0, # 0x0c] @开中断
mov r1, # 0xf1
str r1, [r0, # 0x18] @ 捕获/比较模式
mov r1, # 3
str r1, [r0, # 0x20] @ 下降沿捕获
ldr r1, = 0x81
str r1, [r0]
tim1dingshiqi:
ldr r0, = 0x40000800 @ TIM
ldr r1, = 72
str r1, [r0, # 0x28] @ PSC
ldr r1, = 1000
str r1, [r0, # 0x2c] @ ARR
ldr r1, = 0x78
str r1, [r0, # 0x18] @ CCMR
ldr r1, = 0x01
str r1, [r0, # 0x20]
ldr r1, = 0x200
str r1, [r0, # 0x0c]
ldr r1, = 0x81
str r1, [r0] @ cr1
IOshezhi:
@PA=0x40010800 PB=0x40010c00 PC=0x40011000
@PD=0x40011400 PE=0x40011800 PF=0x40011c00
@ IO 1(通用推挽10M)2(通用推挽2M)3(通用推挽50M)
@4(浮空输入)5(通用开漏输出10M)6(通用开漏输出2M)
@7(通用开漏输出50M)8(上拉下拉输入)9(复用功能推挽输出10M)
@A(复用功能推挽输出2M)B(复用功能推挽输出50M)C(保留)
@D(复用功能开溜输出10M)E(复用功能开漏输出2M)F(复用功能开漏输出50M)
@ 偏移0X8=IDR 输入数据寄存器
@偏移0XC=ODR 输出数据寄存器
@偏移0X10=BSRR IO开
@偏移0X14=BRR IO关
ldr r0, = 0x40010c00
ldr r1, = 0x33333333
str r1, [r0, # 0x04]
ldr r1, = 0xbbbbbbbb
str r1, [r0]
ldr r1, = 0xffff
str r1, [r0, # 0x0c]
ldr r0, = 0x40010800
ldr r1, = 0x44444555
str r1, [r0, # 0x04]
zhucaidan:
ldr r0, = 0xe000e010
mov r1, # 0
str r1, [r0]
bl anjian
ldr r3, = 0x20000600
ldr r0, [r3]
mov r1, # 4
ldr r2, = 0x20000100
str r3, [r2]
bl zhuan_ascii
mov r0, # 4
bl xieshumaguan
ldr r3, = 0x200004f8
ldr r0, [r3]
ldr r1, = caidian
ldr lr, [r1]
lsl r0, # 2
ldr r2, [r1, r0]
mov pc, r2
dd1:
ldr r11, = 0x100
bx lr
dd2:
ldr r11, = 0x101
bx lr
dd3:
push {r0-r10,lr}
ldr r3, = 0x20000020
ldr r3, [r3]
ldr r0, = 0x20000014
ldrb r1, [r0, r3]
add r1, # 1
strb r1, [r0, r3]
bl qingchuanjian
pop {r0-r10,pc}
dd4:
push {r0-r10,lr}
ldr r5, = 0x20000020
ldr r4, [r5]
add r4, # 1
cmp r4, # 8
it eq
moveq r4, # 0
str r4, [r5]
bl qingchuanjian
ldr r11, = 0x103
pop {r0-r10,pc}
dd5:
ldr r11, = 0x104
bx lr
dd6:
ldr r11, = 0x105
bx lr
dd7:
ldr r11, = 0x106
bx lr
dd8:
ldr r11, = 0x107
bx lr
dd9:
ldr r11, = 0x108
bx lr
dd10:
ldr r11, = 0x109
bx lr
dd11:
ldr r11, = 0x110
bx lr
dd12:
ldr r11, = 0x111
bx lr
dd13:
ldr r11, = 0x112
bx lr
dd14:
bx lr
dd15:
ldr r11, = 0x114
bx lr
dd16:
push {r0-r5,lr}
ldr r2, = 0x4000082c
ldr r2, [r2]
ldr r0, = 0x20000600
ldr r1, [r0]
add r1, r1, # 10
cmp r1, r2
it hi
movhi r1, r2
str r1, [r0]
ldr r11, = 0x118
bl qingchuanjian
pop {r0-r5,pc}
dd17:
ldr r11, = 0x116
bx lr
dd18:
push {r0-r5,lr}
ldr r2, = 0x4000082c
ldr r2, [r2]
ldr r0, = 0x20000600
ldr r1, [r0]
sub r1, r1, # 10
cmp r1, r2
it hi
movhi r1, # 0
str r1, [r0]
ldr r11, = 0x120
bl qingchuanjian
pop {r0-r5,pc}
dd20:
bx lr
dd21:
ldr r11, = 0x120
bx lr
dd19:
ldr r0, = 0xe000e010
mov r1, # 3
str r1, [r0]
zhuye:
bl anjian
ldr r2, = 0x200004f8
ldr r2, [r2]
cmp r2, # 21
beq zhucaidan
ldr r2, = 0x20000014
ldr r0, [r2]
mov r1, # 4
ldr r2, = 0x20000100
bl zhuan_ascii
mov r0, # 4
bl xieshumaguan
b zhuye
zhuan_shijinzhi: @ R0=要转换的数的地址
push {r0-r9,lr}
mov r12, sp
sub sp, # 0x04
ldrb r8, [r0]
ldrb r2, [r0, # 1]
ldrb r3, [r0, # 2]
ldrb r4, [r0, # 3]
mov r5, # 100
mul r9, r2, r5
movw r5, # 10000
mul r7, r3, r5
ldr r5, = 1000000
mul r6, r4, r5
add r8, r8, r9
add r2, r7, r8
add r1, r2, r6
str r1, [sp]
mov sp, r12
pop {r0-r9,pc}
zhuan_ascii: @ 入口R0=数据 R1= 长度 R2=出口
push {r0-r7,lr}
ldr r7, = shumaguanmabiao
mov r5, # 10
xunhuanqiuma:
udiv r4, r0, r5
mul r6, r4, r5
sub r3, r0, r6
ldrb r6, [r7, r3]
strb r6, [r2], # 1
mov r0, r4
subs r1, # 1
bne xunhuanqiuma
pop {r0-r7,pc}
xie595:
@74HC595 11=输入锁存 12=输出锁存 14=数据
push {r0-r12,lr}
mov r12, sp @把SP指针保存到R12
ldr r0, = 0x422101a0@ 位带地址，595的11脚
mov r1, # 1 @ 1
mov r2, # 0 @ 0
ldr r3, = 0x22000000 @ 0x20000000的位带
mov r4, # 16 @ 写两个8位
xunhuan595:
str r2, [r0, # 0x08] @ 595_11 输入锁存
ldr r5, [r3], # 4 @ 取出一位的数据
str r5, [r0] @14脚输出数据
str r1, [r0, # 0x08] @ 锁存
subs r4, # 1
bne xunhuan595 @循环16次
str r2, [r0, # 0x04] @ 12输出锁存
str r1, [r0, # 0x04]
ldr r5, = 0xffff @ 延时数
xunhuan1_595:
subs r5, # 1
bne xunhuan1_595 @ 延时
mov sp, r12 @ 恢复指针
pop {r0-r12,pc} @ 弹出各寄存器返回
qingchuanjian:
push {r0-r1,lr}
ldr r0, = 0x200004f8
mov r1, # 0
str r1, [r0]
ldr r0, = 0x20000500
str r1, [r0]
pop {r0-r1,pc}
anjian:
push {r0-r12,lr}
ldr r3, = 0x20000500
ldr r5, = hongwaimabiao
mov r6, # 21 @ 按键数量
panduananjian:
ldr r4, [r5], # 4
ldr r2, [r3]
cmp r2, r4
beq anjianzhengque
subs r6, # 1
bne panduananjian
b anjianfanhui
anjianzhengque:
ldr r2, = 0x200004f8
str r6, [r2]
anjianfanhui:
pop {r0-r12,pc}
xieshumaguan: @ r0位数
push {r0-r12,lr}
ldr r7, = 0x20000100
ldr r8, = shuaxinbiao
ldr r6, = 0x20000000
xianshi:
ldrb r5, [r8], # 1
ldrb r2, [r7], # 1
strb r5, [r6]
strb r2, [r6, # 0x01]
bl xie595
subs r0, # 1
bne xianshi
pop {r0-r12,pc}
_nmi_handler:
bx lr
_hard_fault:
bx lr
_memory_fault:
bx lr
_bus_fault:
bx lr
_usage_fault:
bx lr
systickdingshiqi: @ SYSTICK定时期中断服务函数
push {r0-r12,lr}
ldr r0, = 0xe000ed04
ldr r1, = 0x2000000
str r1, [r0] @ 挂起SYSTICK
ldr r2, = 0x20000010
ldr r4, = 0x20000014
ldr r3, [r4]
ldr r1, [r2]
add r1, # 1
cmp.w r1, # 1000
itt cs
movcs r1, # 0
addcs r3, # 1
ldr r5, = 9999
cmp r3, r5
it cs
movcs r3, # 0
str r1, [r2]
str r3, [r4]
pop {r0-r12,pc}
tim2dingshiqi:
push {r0-r12,lr}
ldr r2, = 0x200004fc
ldr r0, = 0x40000034
ldr r3, [r2]
ldr r1, [r0] @ 读取时间
cmp.w r1, # 0xe000
bhi tim2fanhui
cmp.w r1, # 0x1000
ittt hi
ldrhi r4, = 0x2200a000
strhi r4, [r2]
bhi tim2fanhui
cmp r1, # 0xff
itttt hi
ldrbhi r5, [r2, # - 0x0c]
addhi r5, # 1
strbhi r5, [r2, # - 0x0c]
bhi tim2fanhui
cmp r1, # 0xa0
itttt hi
movhi r6, # 1
strhi r6, [r3], # 4
strhi r3, [r2]
bhi tim2fanhui
cmp r1, # 0x60
ittt hi
movhi r6, # 0
strhi r6, [r3], # 4
strhi r3, [r2]
tim2fanhui:
ldr r0, = 0x40000024
mov r1, # 0
str r1, [r0]
pop {r0-r12,pc}
.thumb
.syntax unified
.section .data
.align 4
shumaguanmabiao: .byte 0x03,0x9f,0x25,0x0d,0x99,0x49,0x41,0x1f,0x01,0x09
hongwaimabiao: .int 0xba45ff00,0xb946ff00,0xb847ff00,0xbb44ff00,0xbf40ff00,0xbc43ff00,0xf807ff00,0xea15ff00,0xf609ff00,0xe916ff00,0xe619ff00,0xf20dff00,0xf30cff00,0xe718ff00,0xa15eff00,0xf708ff00,0xe31cff00,0xa55aff00,0xbd42ff00,0xb54aff00
shuaxinbiao: .byte 0x40,0x20,0x10,0x08,0x40,0x20,0x10,0x08
caidian: .word zhucaidan +1,dd1 +1,dd2 +1,dd3 +1,dd4 +1,dd5 +1,dd6 +1,dd7 +1,dd8 +1,dd9 +1,dd10 +1,dd11 +1,dd12 +1,dd13 +1,dd14 +1,dd15 +1,dd16 +1,dd17 +1,dd18 +1,dd19 +1,dd20 +1,dd21 +1
.equ STACKINIT, 0x20005000
.equ systickbiaozhi, 0x20000300
.section .text
xiangliangbiao:
.word STACKINIT
.word _start + 1
.word _nmi_handler + 1
.word _hard_fault + 1
.word _memory_fault + 1
.word _bus_fault + 1
.word _usage_fault + 1
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word systickdingshiqi +1
.word 0 @WWDG 0
.word 0 @PVD 1
.word 0 @TAMPER 2
.word 0 @RTC 3
.word 0 @FLASH 4
.word 0 @RCC 5
.word 0 @EXTI0 6
.word 0 @EXTI1 7
.word 0 @EXTI2 8
.word 0 @EXTI3 9
.word 0 @EXTI4 10
.word 0 @DMA11 11
.word 0 @DMA12 12
.word 0 @DMA13 13
.word 0 @DMA14 14
.word 0 @DMA15 15
.word 0 @DMA16 16
.word 0 @DMA17 17
.word 0 @ADC1_2 18
.word 0 @USB_HP_CAN1_TX 19
.word 0 @USB_LP_CAN1_RX0 20
.word 0 @CAN1_RX1 21
.word 0 @CAN1_SCE 22
.word 0 @EXTI9_5 23
.word 0 @TIM1_BRK 24
.word 0 @TIM1_UP 25
.word 0 @TIM1_TRG_COM 26
.word 0 @TIM1_CC 27
.word tim2dingshiqi +1 @TIM2 28
.word 0 @TIM3 29
.word 0 @TIM4 30
.word 0 @I2C1_EV 31
.word 0 @I2C1_ER 32
.word 0 @I2C2_EV 33
.word 0 @I2C2_ER 34
.word 0 @SPI1 35
.word 0 @SPI2 36
.word 0 @USART1 37
.word 0 @USART2 38
.word 0 @USART3 39
.word 0 @EXTI15_10 40
.word 0 @RTCAlarm_IRQ 41
.word 0 @USBWakeUp 42
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0 @BootRAM
_start:
ldr r0, = 0x40010004
ldr r1, = 0x02000000
str r1, [r0]
str r1, [r0, # 0x04]
ldr r0, = 0x40021000
ldr r1, = 0x14D83
str r1, [r0]
gsszbz:
ldr r2, [r0]
ldr r1, = 0x20000
tst r1, r2 @HSE高速时钟标志位
bne rccchushihua
b gsszbz
rccchushihua:
ldr r0, = 0x40022000
mov r1, # 0x00000032
str r1, [r0] @FLASH缓冲 缓冲开启
ldr r0, = 0x40021004
ldr r1, = 0x1D8400
str r1, [r0]
ldr r0, = 0x40021000
ldr r1, = 0x1033D03
str r1, [r0]
chaxun:
ldr r2, [r0]
ldr r1, = 0x2000000
tst r1, r2
bne rccgg @等待PLL稳定
b chaxun
rccgg:
ldr r0, = 0x40021004
ldr r1, = 0x1D8402
str r1, [r0] @ PLL作为系统时钟
ldr r0, = 0x40010004
ldr r1, = 0x02000000
str r1, [r0]
neicunqingling: @ 无聊把内存清0
ldr r0, = 0x20000000
ldr r2, = 0x4fff @ 区域是0X4FFF大的地方
mov r1, # 0 @ 写0
qingling_xunhuan:
str r1, [r0], 4
subs r2, # 1
bne qingling_xunhuan @ 循环清0
chushihuayixieshuju: @初始化一些数据
ldr r0, = 0x200004fc
ldr r1, = 0x2200a000
str r1, [r0]
ldr r0, = 0x2000001c
ldr r1, = 0xffffff
str r1, [r0]
ldr r5, = 0x20000024 @ 22000480
ldr r1, = 0x00110001
ldr r2, = 0x00010001
ldr r3, = 0x00010101
str r1, [r5]
str r2, [r5, # 4]
str r3, [r5, # 8]
@ dma
ldr r0, = 0x20000600
ldr r1, = 500
str r1, [r0]
systick:
@0xe000e010 SYSTICK控制状态寄存器
@0=定时器使能
@1=（1倒数到0发出异常请，0无动作）
@2=（0外部始终1内核时钟）
@16= 如果赏赐读取本寄存器后SYSTICK已经数到0则该位为1如果读取该位则清0
@0xe000e014 重载值寄存器 数到0将要被重载的值
@0xe000e018 当前值，写清0
@0e000e01c
@0-23 10MS的时间内倒计数的格数
@ 30=(1教准不是准确的10MS)（0教准是准确的10MS）
ldr r0, = 0xe000e010
mov r1, # 0
str r1, [r0] @ 关掉SYSTICK
ldr r1, = 9000 @ 重载数
str r1, [r0, # 4] @ 写进重载数
str r1, [r0, # 8] @ 清0当前数
ldr r3, = 0xe000ed23 @systick优先级
mov r1, # 240
str r1, [r3]
mov r1, # 0
str r1, [r0] @ 开定时器
waisheshizhong:
@AHBENR=0x40021014
@0=DMA1,1=DMA2,2=SRAMEN,4=FLITFEN,6=CRCEN,8=FSMCEN,10=SDIOEN
ldr r0, = 0x40021014
mov r1, # 0x15
str r1, [r0]
@APB2_ENR=0X40021018 0(AFIO)1(保留)2(PA)3(PB)4(PC)5(PD)6(PE)78(保留)
@9(ADC1)10(ADC2)11(TIM1)12(SPI1)13(保留)14（USART1）15(保留)
ldr r0, = 0x40021018 @ APB2_ENR
ldr r1, = 0x83c
str r1, [r0]
@APB1_ENR=0X4002101C
@0=TIM2,1=TIM3,2=TIM4,3=TIM5,4=TIM6,5=TIM7,11=WWDG
@14=SP12,15=SP13,17=UART3,19=UART4,20=UART5
@21=I2C,22=I2C2,23=USB,25=CAN,27=BKPT,28=PWR,29=DACEN
ldr r0, = 0X4002101C @ APB1_ENR
ldr r1, = 0x3f
str r1, [r0]
zhongduankongzhi:
@SETENA0=0XE000E100,SETENA1=0XE000E104 @中断使能
@CLRENA0=0XE000E180,CLRENA1=0XE000E184 @中断除能
@SETPEND0=0XE000E200,SETPPEND1=0XE000E204 @中断悬起
@CLRPEND0=0XE000E280,CLRPEND1=0XE000E284 @中断解悬
@ACTIVE0=0XE000E300,ACTIVE1=0XE000E304 @ 中断活动状态
@0XE000E400-0XE000E43C 中断优先级阵列每个占8位
@0XE000ED00=CPUID，0XE000ED04=中断控制及状态寄存器
@0xe000ed08=向量表偏移，0xe000ed0c=应用程序中断及复位
@0xe000ed10=系统控制，0XE000ED14=配置与控制
@0xe000ed18-0xe000ed23=系统异常优先级阵列
ldr r0, = 0xe000ed0c
ldr r1, = 0x5fa0500
str r1, [r0]
ldr r0, = 0xe000e400
mov r1, # 0xc0
str r1, [r0, # 28]
ldr r0, = 0xe000e100 @ 中断使能
ldr r1, = 0x10000000
str r1, [r0]
dmachushihua:
DMA1= 0x40020000
@+0=LSR,+4=IFCR,
@+8=CCR1,+c=CNDTR1,+10=CPAR1+14=CMAR1,
@+1c=CCR2,+20=CNDTR2,+24=CPAR2,+28=CMAR2
@+30=CCR3,+34=CNDTR3,+38=CPAR2,+3c=CMAR3
@+44=CCR4,+48=CNDTR4,+4c=CPAR4,+50=CMAR4
@+58=CCR5,+5c=CNDTR5,+60=CPAR5,+64=CMAR5
@+6C=CCR6,+70=CNDTR6,+74=CPAR6,+78=CMAR6
@+80=CCR7,+84=CNDTR7,+88=CPAR7,+8c=CMAR7
ldr r0, = 0x40020000
ldr r1, = 0x40000834
str r1, [r0, # 0x10]
ldr r1, = 0x20000600
str r1, [r0, # 0x14]
ldr r1, = 0x8f
str r1, [r0, # 0x0c]
ldr r1, = 0x2a31
str r1, [r0, # 0x8]
timdingshiqi:
@tim1=0x40012c00
@+0=CR1 控制寄存器
@+4=CR2 控制寄存器2
@+8=SMCR 从模式控制寄存器
@+c=DIER 中断使能寄存器
@+10=SR 状态寄存器
@+14=EGR 事件产生寄存器
@+18=CCMR1 捕获/比较模式寄存器1
@+1C=CCMR2 捕获/比较模式寄存器2
@+20=CCER 捕获/比较使能寄存器
@+24=CNT 计数器
@+28=PSC 预分频器
@+2C=ARR 重载寄存器
@+30=RCR 重复计数寄存器
@+34=CCR1 捕获/比较寄存器1
@+38=CCR2 捕获/比较寄存器2
@+3C=CCR3 捕获/比较寄存器3
@+40=CCR4 捕获/比较寄存器4
@+44=BDTR 刹车/死区寄存器
@+48=DCR DMA控制器
@+4C=DMAR 连续模式的DMA地址
@TIM2=0x40000000
@18=CCMR1,18=OCMR1,1C=CCMR2,1C=OCMR2
@CNT与CCR比较占空，ARR与PSC决定频率。主频除以PSC=计数频率
ldr r0, = 0x40000000 @ tim2
ldr r1, = 720
str r1, [r0, # 0x28] @ 分频
ldr r1, = 0xffffff
str r1, [r0, # 0x2c] @ 重载
mov r1, # 2
str r1, [r0, # 0x0c] @开中断
mov r1, # 0xf1
str r1, [r0, # 0x18] @ 捕获/比较模式
mov r1, # 3
str r1, [r0, # 0x20] @ 下降沿捕获
ldr r1, = 0x81
str r1, [r0]
tim1dingshiqi:
ldr r0, = 0x40000800 @ TIM
ldr r1, = 72
str r1, [r0, # 0x28] @ PSC
ldr r1, = 1000
str r1, [r0, # 0x2c] @ ARR
ldr r1, = 0x78
str r1, [r0, # 0x18] @ CCMR
ldr r1, = 0x01
str r1, [r0, # 0x20]
ldr r1, = 0x200
str r1, [r0, # 0x0c]
ldr r1, = 0x81
str r1, [r0] @ cr1
IOshezhi:
@PA=0x40010800 PB=0x40010c00 PC=0x40011000
@PD=0x40011400 PE=0x40011800 PF=0x40011c00
@ IO 1(通用推挽10M)2(通用推挽2M)3(通用推挽50M)
@4(浮空输入)5(通用开漏输出10M)6(通用开漏输出2M)
@7(通用开漏输出50M)8(上拉下拉输入)9(复用功能推挽输出10M)
@A(复用功能推挽输出2M)B(复用功能推挽输出50M)C(保留)
@D(复用功能开溜输出10M)E(复用功能开漏输出2M)F(复用功能开漏输出50M)
@ 偏移0X8=IDR 输入数据寄存器
@偏移0XC=ODR 输出数据寄存器
@偏移0X10=BSRR IO开
@偏移0X14=BRR IO关
ldr r0, = 0x40010c00
ldr r1, = 0x33333333
str r1, [r0, # 0x04]
ldr r1, = 0xbbbbbbbb
str r1, [r0]
ldr r1, = 0xffff
str r1, [r0, # 0x0c]
ldr r0, = 0x40010800
ldr r1, = 0x44444555
str r1, [r0, # 0x04]
zhucaidan:
ldr r0, = 0xe000e010
mov r1, # 0
str r1, [r0]
bl anjian
ldr r3, = 0x20000600
ldr r0, [r3]
mov r1, # 4
ldr r2, = 0x20000100
str r3, [r2]
bl zhuan_ascii
mov r0, # 4
bl xieshumaguan
ldr r3, = 0x200004f8
ldr r0, [r3]
ldr r1, = caidian
ldr lr, [r1]
lsl r0, # 2
ldr r2, [r1, r0]
mov pc, r2
dd1:
ldr r11, = 0x100
bx lr
dd2:
ldr r11, = 0x101
bx lr
dd3:
push {r0-r10,lr}
ldr r3, = 0x20000020
ldr r3, [r3]
ldr r0, = 0x20000014
ldrb r1, [r0, r3]
add r1, # 1
strb r1, [r0, r3]
bl qingchuanjian
pop {r0-r10,pc}
dd4:
push {r0-r10,lr}
ldr r5, = 0x20000020
ldr r4, [r5]
add r4, # 1
cmp r4, # 8
it eq
moveq r4, # 0
str r4, [r5]
bl qingchuanjian
ldr r11, = 0x103
pop {r0-r10,pc}
dd5:
ldr r11, = 0x104
bx lr
dd6:
ldr r11, = 0x105
bx lr
dd7:
ldr r11, = 0x106
bx lr
dd8:
ldr r11, = 0x107
bx lr
dd9:
ldr r11, = 0x108
bx lr
dd10:
ldr r11, = 0x109
bx lr
dd11:
ldr r11, = 0x110
bx lr
dd12:
ldr r11, = 0x111
bx lr
dd13:
ldr r11, = 0x112
bx lr
dd14:
bx lr
dd15:
ldr r11, = 0x114
bx lr
dd16:
push {r0-r5,lr}
ldr r2, = 0x4000082c
ldr r2, [r2]
ldr r0, = 0x20000600
ldr r1, [r0]
add r1, r1, # 10
cmp r1, r2
it hi
movhi r1, r2
str r1, [r0]
ldr r11, = 0x118
bl qingchuanjian
pop {r0-r5,pc}
dd17:
ldr r11, = 0x116
bx lr
dd18:
push {r0-r5,lr}
ldr r2, = 0x4000082c
ldr r2, [r2]
ldr r0, = 0x20000600
ldr r1, [r0]
sub r1, r1, # 10
cmp r1, r2
it hi
movhi r1, # 0
str r1, [r0]
ldr r11, = 0x120
bl qingchuanjian
pop {r0-r5,pc}
dd20:
bx lr
dd21:
ldr r11, = 0x120
bx lr
dd19:
ldr r0, = 0xe000e010
mov r1, # 3
str r1, [r0]
zhuye:
bl anjian
ldr r2, = 0x200004f8
ldr r2, [r2]
cmp r2, # 21
beq zhucaidan
ldr r2, = 0x20000014
ldr r0, [r2]
mov r1, # 4
ldr r2, = 0x20000100
bl zhuan_ascii
mov r0, # 4
bl xieshumaguan
b zhuye
zhuan_shijinzhi: @ R0=要转换的数的地址
push {r0-r9,lr}
mov r12, sp
sub sp, # 0x04
ldrb r8, [r0]
ldrb r2, [r0, # 1]
ldrb r3, [r0, # 2]
ldrb r4, [r0, # 3]
mov r5, # 100
mul r9, r2, r5
movw r5, # 10000
mul r7, r3, r5
ldr r5, = 1000000
mul r6, r4, r5
add r8, r8, r9
add r2, r7, r8
add r1, r2, r6
str r1, [sp]
mov sp, r12
pop {r0-r9,pc}
zhuan_ascii: @ 入口R0=数据 R1= 长度 R2=出口
push {r0-r7,lr}
ldr r7, = shumaguanmabiao
mov r5, # 10
xunhuanqiuma:
udiv r4, r0, r5
mul r6, r4, r5
sub r3, r0, r6
ldrb r6, [r7, r3]
strb r6, [r2], # 1
mov r0, r4
subs r1, # 1
bne xunhuanqiuma
pop {r0-r7,pc}
xie595:
@74HC595 11=输入锁存 12=输出锁存 14=数据
push {r0-r12,lr}
mov r12, sp @把SP指针保存到R12
ldr r0, = 0x422101a0@ 位带地址，595的11脚
mov r1, # 1 @ 1
mov r2, # 0 @ 0
ldr r3, = 0x22000000 @ 0x20000000的位带
mov r4, # 16 @ 写两个8位
xunhuan595:
str r2, [r0, # 0x08] @ 595_11 输入锁存
ldr r5, [r3], # 4 @ 取出一位的数据
str r5, [r0] @14脚输出数据
str r1, [r0, # 0x08] @ 锁存
subs r4, # 1
bne xunhuan595 @循环16次
str r2, [r0, # 0x04] @ 12输出锁存
str r1, [r0, # 0x04]
ldr r5, = 0xffff @ 延时数
xunhuan1_595:
subs r5, # 1
bne xunhuan1_595 @ 延时
mov sp, r12 @ 恢复指针
pop {r0-r12,pc} @ 弹出各寄存器返回
qingchuanjian:
push {r0-r1,lr}
ldr r0, = 0x200004f8
mov r1, # 0
str r1, [r0]
ldr r0, = 0x20000500
str r1, [r0]
pop {r0-r1,pc}
anjian:
push {r0-r12,lr}
ldr r3, = 0x20000500
ldr r5, = hongwaimabiao
mov r6, # 21 @ 按键数量
panduananjian:
ldr r4, [r5], # 4
ldr r2, [r3]
cmp r2, r4
beq anjianzhengque
subs r6, # 1
bne panduananjian
b anjianfanhui
anjianzhengque:
ldr r2, = 0x200004f8
str r6, [r2]
anjianfanhui:
pop {r0-r12,pc}
xieshumaguan: @ r0位数
push {r0-r12,lr}
ldr r7, = 0x20000100
ldr r8, = shuaxinbiao
ldr r6, = 0x20000000
xianshi:
ldrb r5, [r8], # 1
ldrb r2, [r7], # 1
strb r5, [r6]
strb r2, [r6, # 0x01]
bl xie595
subs r0, # 1
bne xianshi
pop {r0-r12,pc}
_nmi_handler:
bx lr
_hard_fault:
bx lr
_memory_fault:
bx lr
_bus_fault:
bx lr
_usage_fault:
bx lr
systickdingshiqi: @ SYSTICK定时期中断服务函数
push {r0-r12,lr}
ldr r0, = 0xe000ed04
ldr r1, = 0x2000000
str r1, [r0] @ 挂起SYSTICK
ldr r2, = 0x20000010
ldr r4, = 0x20000014
ldr r3, [r4]
ldr r1, [r2]
add r1, # 1
cmp.w r1, # 1000
itt cs
movcs r1, # 0
addcs r3, # 1
ldr r5, = 9999
cmp r3, r5
it cs
movcs r3, # 0
str r1, [r2]
str r3, [r4]
pop {r0-r12,pc}
tim2dingshiqi:
push {r0-r12,lr}
ldr r2, = 0x200004fc
ldr r0, = 0x40000034
ldr r3, [r2]
ldr r1, [r0] @ 读取时间
cmp.w r1, # 0xe000
bhi tim2fanhui
cmp.w r1, # 0x1000
ittt hi
ldrhi r4, = 0x2200a000
strhi r4, [r2]
bhi tim2fanhui
cmp r1, # 0xff
itttt hi
ldrbhi r5, [r2, # - 0x0c]
addhi r5, # 1
strbhi r5, [r2, # - 0x0c]
bhi tim2fanhui
cmp r1, # 0xa0
itttt hi
movhi r6, # 1
strhi r6, [r3], # 4
strhi r3, [r2]
bhi tim2fanhui
cmp r1, # 0x60
ittt hi
movhi r6, # 0
strhi r6, [r3], # 4
strhi r3, [r2]
tim2fanhui:
ldr r0, = 0x40000024
mov r1, # 0
str r1, [r0]
pop {r0-r12,pc}
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