经过数日努力终于成功在LCD上显示了一个字符。。。 对大家很容易的事情我做起来却很难。。 。 原子哥的程序看不懂， 但是看不懂也要看反复的看终于看懂点了。 没办法自己小学文化，基础知识太差了， 自学单片机写程序完全靠瞎蒙。。
用的是原子哥的miniSTM32开发板， 读液晶返回的ID是4535。 程序实现在屏幕左上角显示一个A ， 程序做了延时能看清过程。
汇编器binutils-2.23.2
@@@
.thumb
.syntax unified
.section .data
yjm: .short 0x001f, 0xf81f, 0xffe0, 0x07ff, 0xf800
wxwx: .byte 0x00,0x00,0x00,0x08,0x08,0x18,0x14,0x14,0x24,0x3C,0x22,0x42,0x42,0xE7,0x00,0x00
.equ STACKINIT, 0x20005000
.equ gpioddi, 0x40011400
.equ gpiododr, 0x4001140C
.equ RCC_APB2ENR, 0x40021018
.equ syskz, 0xE000E010 @ 控制寄存器
.equ syscz, 0xE000E014 @systick定时器重载
.equ syssz, 0xE000E018 @systick计数值查询
.equ rcckz, 0x40021000 @rcc时钟控制寄存器
.equ rccpz, 0x40021004 @时钟配置寄存器
.equ flashacr, 0x40022000 @flash闪存访问寄存器
.equ lcdyanshi, 80000
.equ lcdid, 0x20000100
.section .text
vectors_table:
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
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word 0
.word _dingshiqi + 1
_start:
mov r5, # 0
shizhong:
ldr r0, = rcckz
ldr r1, = 0x14D83
str r1, [r0]
gsszbz: @高速时钟标志位
ldr r1, [r0]
ldr r2, = 0x34D83
cmp r2, r1
bne gsszbz
@FLASH缓冲 缓冲开启
ldr r0, = flashacr
mov r1, # 0x00000032
str r1, [r0]
@设置
ldr r0, = rccpz
ldr r1, = 0x1D8400
str r1, [r0]
ldr r0, = rcckz
ldr r1, = 0x1033D03
str r1, [r0]
chaxun:
ldr r1, [r0]
ldr r2, = 0x03033D03
cmp r1, r2
bne chaxun
ldr r0, = rccpz
ldr r1, = 0x1D8402
str r1, [r0]
systick:
ldr r1, = syskz
ldr r0, = syscz
ldr r2, = syssz
mov r3, #0
str r3, [r1]
ldr r3, = 0x2328
str r3, [r0]
str r3, [r2]
mov r3, # 0x03
str r3, [r1]
ledled:
ldr r6, = RCC_APB2ENR
mov r0, 0x39
str r0, [r6]
ldr r6, = gpioddi
ldr r0, = 0x44444344
str r0, [r6]
mov r2, 0
mov r3, 0x04
ldr r6, = gpiododr
lcdchushihua1:
@@AFIO-MAPR 开SWD
ldr r0, = 0x40010004
ldr r1, = 0x02000000
str r1, [r0]
ldr r0, = 0x40011000
ldr r1, = 0x33444444
str r1, [r0]
ldr r0, = 0x40011004
ldr r1, = 0x44444333
str r1, [r0]
ldr r0, = 0x4001100C
ldr r1, = 0x7c0
str r1, [r0]
ldr r0, = 0x40010C00
ldr r1, = 0x33333333
str r1, [r0]
ldr r0, = 0x40010C04
ldr r1, = 0x33333333
str r1, [r0]
ldr r0, = 0x40010C0C
ldr r1, = 0xffff
str r1, [r0]
mov r4, # 0x0000
mov r7, # 0x0001
bl lcdchushihua2
bl yanshi
mov r4, # 0x0015
mov r7, # 0x0030
bl lcdchushihua2
mov r4, # 0x009a
mov r7, # 0x0010
bl lcdchushihua2
mov r4, # 0x0011
mov r7, # 0x0020
bl lcdchushihua2
mov r4, # 0x0010
movw r7, # 0x3428
bl lcdchushihua2
mov r4, # 0x0012
mov r7, # 0x0002
bl lcdchushihua2
mov r4, # 0x0013
movw r7, # 0x1038
bl lcdchushihua2
bl yanshi
@@@@
mov r4, # 0x0012
mov r7, # 0x0012
bl lcdchushihua2
bl yanshi
mov r4, # 0x0010
movw r7, # 0x3420
bl lcdchushihua2
mov r4, # 0x0013
movw r7, # 0x3038
bl lcdchushihua2
bl yanshi
mov r4, # 0x0030
mov r7, # 0x0000
bl lcdchushihua2
mov r4, # 0x0031
movw r7,# 0x0402
bl lcdchushihua2
mov r4, # 0x0032
movw r7, # 0x0307
bl lcdchushihua2
@@@@@@
mov r4, # 0x0033
movw r7, # 0x0304
bl lcdchushihua2
mov r4, # 0x0034
mov r7, # 0x0004
bl lcdchushihua2
mov r4, # 0x0035
movw r7, # 0x0401
bl lcdchushihua2
mov r4, # 0x0036
movw r7, # 0x0707
bl lcdchushihua2
mov r4, # 0x0037
movw r7, #0x0305
bl lcdchushihua2
mov r4, # 0x0038
movw r7, # 0x0610
bl lcdchushihua2
@@@@@
mov r4, # 0x0039
movw r7, # 0x0610
bl lcdchushihua2
mov r4, # 0x0001
movw r7, # 0x0100
bl lcdchushihua2
mov r4, # 0x0002
movw r7, # 0x0300
bl lcdchushihua2
mov r4, # 0x0003
movw r7, #0x1030
bl lcdchushihua2
mov r4, # 0x0008
movw r7, # 0x0808
bl lcdchushihua2
mov r4, # 0x000a
mov r7, # 0x0008
bl lcdchushihua2
@@@@@
mov r4, # 0x0060
movw r7, #0x2700
bl lcdchushihua2
mov r4, # 0x0061
mov r7, # 0x0001
bl lcdchushihua2
mov r4, # 0x0090
movw r7, # 0x013e
bl lcdchushihua2
mov r4, # 0x0092
movw r7, # 0x0100
bl lcdchushihua2
mov r4, # 0x0093
movt r7, #0x0100
bl lcdchushihua2
mov r4, # 0x00a0
movw r7, #0x3000
bl lcdchushihua2
@@@@@@
mov r4, # 0x00a3
mov r7, # 0x0010
bl lcdchushihua2
mov r4, # 0x0007
mov r7, # 0x0001
bl lcdchushihua2
mov r4, # 0x0007
mov r7, # 0x0021
bl lcdchushihua2
mov r4, # 0x0007
mov r7, # 0x0023
bl lcdchushihua2
mov r4, # 0x0007
mov r7, # 0x0033
bl lcdchushihua2
mov r4, # 0x0007
movw r7, # 0x0133
bl lcdchushihua2
mov r9, # 0
mov r8, # 0
ldr r11, = wxwx
mov r10, #0x1f
mov r2, # 16
mov r3, # 8
mov r6, # 0x3c
main:
lcdyy:
ldrb r6, [r11, r2]
subs r2, 1
bne lcdxx
mov r2, # 16
ldr r11, = wxwx
b main
lcdxx:
subs r3, 1
bne lcdyu
mov r3, # 8
b main
lcdyu:
tst r6, #0x01
bne lcdxy
b lcdxy1
lcdxy:
adds r8, r3
adds r9, r2
mov r10, # 0x1f
ror r6, 1
b lcdhuadian
lcdxy1:
adds r8, r3
adds r9, r2
movw r10, # 0xf800
ror r6, 1
b lcdhuadian
lcdhuadian:
bl yanshi
mov r4, # 0x0020
mov r7, r8
bl lcdchushihua2
mov r4, # 0x0021
mov r7, r9
bl lcdchushihua2
mov r4, # 0x0022
mov r7, r10
bl lcdchushihua2
mov r9, # 0
mov r8, # 0
b lcdxx
lcdchushihua2:
push {r4-r11, lr}
ldr r0, = 0x4001100C
mov r1, # 0x4c0
str r1, [r0]
ldr r0, = 0x40010C0C
str r4, [r0]
ldr r0, = 0x4001100C
mov r1, # 0x440
str r1, [r0]
ldr r0, = 0x4001100C
mov r1, # 0x7c0
str r1, [r0]
ldr r0, = 0x4001100C
mov r1, # 0x5c0
str r1, [r0]
ldr r0, = 0x40010C0C
str r7, [r0]
ldr r0, = 0x4001100C
mov r1, # 0x540
str r1, [r0]
ldr r0, = 0x4001100C
mov r1, # 0x7c0
str r1, [r0]
pop {r4-r11, pc}
yanshi:
cmp r5, #500
bne yanshi
mov r5, #0
bx lr
_nmi_handler:
bx lr
_hard_fault:
bx lr
_memory_fault:
bx lr
_bus_fault:
bx lr
_usage_fault:
bx lr
_dingshiqi:
adds r5, 1
bx lr
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发表于 2013-7-8 18:40:47
发表于 2013-7-8 23:59:03
