stm32控制1602小程序

yjmwxwx

第一次接触1602惭愧啊，编了个小程序第一行显示yjmwxwx yjmwxwx 

.thumb                 

         .syntax unified

.section .data

lcdshuju: .ascii "yjmwxwx yjmwxwx "

        .equ STACKINIT,          0x20005000

.equ yanshius,           0x20000200

.equ ledkongzhi,         0x20000204

.equ lcdshu,  0x20000208

.equ lcdyanshi, 800000

.equ lcdyanshi1, 2000

.section .text

vectors:        

        .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 

_start:

ldr r0, = yanshius

ldr r1, = 0xfffe

str r1, [r0]

mov r0, # 0

mov r1, # 0

mov r2, # 0

mov r3, # 0

mov r4, # 0

mov r5, # 0

mov r6, # 0 

mov r7, # 0

mov r8, # 0

mov r9, # 0

mov r10, # 0

mov r11, # 0 

@@AFIO-MAPR 开SWD模式

ldr r0, = 0x40010004

ldr r1, = 0x02000000

str r1, [r0]

shizhong:

ldr r0, = 0x40021000

ldr r1, = 0x14D83

str r1, [r0]

gsszbz: 

ldr r2, [r0]

ldr r1, = 0x20000

tst r1, r2           @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

b chaxun

rccgg:

ldr r0, = 0x40021004

ldr r1, = 0x1D8402

str r1, [r0]

rccapb2enr:

        ldr r0, = 0x40021018

        mov r1, # 0x3D

        str r1, [r0]

ioshezhi:

ldr r0, = 0x40010800 @ gpioa

ldr r1, = 0x44443443

str r1, [r0]

        ldr r0, = 0x40010c04

        ldr r1, = 0x33334444

        str r1, [r0]

lcdchushihua:

ldr r0, = 0x20000208

ldr r10, = 0x42210180

mov r9,  # 0

str r9, [r10]

MOV R1, # 0x33

str r1, [r0]

bl xielcd

ldr r6, = lcdyanshi

yanshila3:

subs r6, # 1

bne yanshila3

MOV R1, # 0x32

str r1, [r0]

bl xielcd

ldr r6, = lcdyanshi

yanshila5:

subs r6, # 1

bne yanshila5

MOV R1, # 0x28

str r1, [r0]

bl xielcd

MOV R1, # 0x0c

str r1, [r0]

bl xielcd

MOV R1, # 0x01

str r1, [r0]

bl xielcd

ldr r6, = lcdyanshi

yanshila6:

subs r6, # 1

bne yanshila6

zhuchengxu:

bl lcdlcd

ddd3:

b ddd3

lcdlcd:

push {r0-r10, lr}

MOV R1, # 0x80

str r1, [r0]

bl xielcd

lcdd1:

ldr r0, = 0x20000208

ldr r1, = lcdshuju

mov r3, # 0

lcdchengxu:

ldrb r2, [r1, r3]

str r2, [r0]

ldr r10, = 0x42210180

mov r9,  # 1

str r9, [r10]

bl xielcd

add r3, # 1

cmp r3, # 16

bne lcdchengxu

pop {r0-r10, pc}

xielcd:

push {r0-r9, lr}

ldr r4, = 0x22004110

ldmia r4!, {r0-r3}

bl xielcd1

ldr r4, = 0x22004100

ldmia r4!, {r0-r3}

bl xielcd1

pop {r0-r9, pc}

xielcd1:

push {r0-r10, lr}

ldr r7,  = 0x4221018c

mov r11, # 1

str r11, [r7]

ldr r5, = 0x422181b0

stmia r5!, {r0-r3}

ldr r6, = lcdyanshi1

yanshila:

subs r6, # 1

bne yanshila

mov r11, # 0

str r11, [r7]

pop {r0-r10, pc}

_nmi_handler:

bx lr

_hard_fault:

bx lr

_memory_fault:

bx lr

_bus_fault:

bx lr

_usage_fault:

  bx lr

jiaozhu

很牛逼   汇编写

正点原子

不容易啊,帮顶.

liyanchao153

回复【3楼】正点原子:
---------------------------------
真不容易啊，大炮筒干蚊子，弹药还是用的导弹，楼主威武，向楼主学习汇编。

xsx

大神可以发c语言写吗！不懂编绘语言！

wangci152006

大神可以发c语言写吗！不懂编绘语言！

闯红灯上高速

强啊！汇编大神

大道日丧

向汇编致敬！