Lập trình vi điều khiển STM32L152 bài tập chương 10 sách Embedded Systems with ARM CortexM Microcontrollers in Assembly Language and C (Third Edition – Dr Yifeng Zhu)
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LẬP TRÌNH VI ĐIỀU KHIỂN STM32L152
(Sách Embedded Systems with ARM Cortex-M Microcontrollers
in Assembly Language and C (Third Edition) – Dr Yifeng Zhu )
BÀI TẬP CHƯƠNG 10 (Có code đính kèm)
1 XoaKyTuTrongChuoi_C Call
a. C Program
#include "stm32l1xx.h"
extern void loaikytu(char *str,unsigned char kytu);
char string[] = "lieneeeeeeechieeeeeeeeu\0";
int main(){
__asm{
nop
}
loaikytu(string,'e');
while(1);
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
AREA
removeCharacter, CODE
ALIGN
loaikytu
EXPORT
PROC
loaikytu
;loai 1 ky tu ra khoi 1 chuoi
;vao : r0 chua dia chi cua chuoi, r1 chua ky tu
;ra
: khong
PUSH
{lr,r4,r5}
loop
LDRB
r2,[r0],#1
CBZ r2,stop
;load string
;if 0 -> stop
CMP r2,r1
BNE loop
;if r2!= r1 continue
SUB r0,#1
;else loai ky tu ra khoi chuoi
MOV r4,r0
loai
LDRB
cac ky tu phia sau ve phia truoc
STRB r5,[r4],#1
CMP r5,#0
BEQ loop
r5,[r4,#1]
;di chuyen
B
loai
stop
POP {lr,r4,r5}
BX
lr
ENDP
2 NoiChuoi_S Call
a. C Program
#include <stdint.h>
#include <stdio.h>
#include "stm32l1xx.h"
void strct(char * dst, char* src){
while(*dst++);
while(*dst++ == *src++);
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
IMPORT
strcat
AREA main, CODE, READONLY
EXPORT __main
; make __main visible to linker
ENTRY
__main
PROC
NOP
ldr
r0,=str1
ldr
r1,=str2
bl
strcat
stop
B
stop
ENDP
product
bx
PROC
lr
ENDP
AREA
myData, DATA, READWRITE
ALIGN
str1
DCB
trong
space 100
str2
DCB
"this is tha thu",0
" ma minh ve len thoi",0
END
3 DaoChuoi_C Call
a. C Program
#include "stm32l1xx.h"
extern void hoandoi(char** str1,char** str2);
char s1[] = "day la cai tha thu \0";
char s2[] = "ma minh ve len thoi\0";
char *str1 = s1;
char *str2 = s2;
int main(){
__asm{
nop
}
hoandoi(&str1,&str2);
str1[0] = '1';
str2[0] = '2';
while(1);
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
AREA bai10_3,code
ALIGN
hoandoi
PROC
EXPORT hoandoi
;ham hoan doi 2 chuoi (hoan doi con tro)
;vao : r0, r1 chua dia chi cua con tro tro den 2 chuoi
;ra : void
ldr r2,[r0]
ldr r3,[r1]
str r2,[r1]
str r3,[r0]
bx lr
ENDP
4 TimKyTuTrongChuoi_S Call
a. C Program
char *search(char * s, char c){
char *p = 0;
for(;*s;s++)
if(*s == c)
p = s;
return p;
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
IMPORT
search
AREA main, CODE, READONLY
EXPORT __main
; make __main visible to linker
ENTRY
__main
NOP
ldr r0,=str1
ldr r1,='u'
bl search
PROC
ldr r0,[r0]
stop
B stop
ENDP
product
PROC
bx lr
ENDP
AREA myData, DATA, READWRITE
ALIGN
str1
DCB "this is tha thu",0
trong
space 100
str2
DCB " ma minh ve len thoi",0
END
5 Struct_S Call
a. C Program
struct Student_T{char c1;char c2;int score;char c3;
}
students[10];
void khoiTaoStruct(){
int i;
for( i=0 ; i<10 ; i++ ){
students[i].score = i;
students[i].c1 = 'x';
}
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
IMPORT
students
IMPORT
khoiTaoStruct
AREA main, CODE, READONLY
EXPORT __main
; make __main visible to linker
ENTRY
__main
PROC
NOP
bl khoiTaoStruct
;khoi tao score cho mang struct
ldr r0,=students
mov r1,#0
;tong score
mov r2,#0
;bien lap tinh
mov r3,#0
;offset cua score
mov r4,#12
;moi bien struct co kich thuoc la 12 byte
lap
cmp r2,#10
;while r2<10
beq stop
mul r3,r2,r4
;lay dia chi cua phan tu thu r2 trong mang
add r3,#4
;dia chi offset cua score trong phan tu do
ldr r3,[r0,r3]
;cong score vao tong
add r1,r3
add r2,#1
b lap
stop
B stop
ENDP
AREA myData, DATA, READWRITE
ALIGN
str1
DCB "this is tha thu",0
trong
space 100
str2
DCB " ma minh ve len thoi",0
END
6 MaxFourNumber_C Call
a. C Program
#include "stm32L1xx.h"
extern int max4(int, int, int, int);
int ketqua = 0xffffffff;
int main(){
__asm{
nop
}
ketqua = max4(1,2,3,4);
ketqua = max4(6,3,-54,9);
ketqua = max4(1,3,6,-9);
ketqua = max4(-9,8,6,5);
ketqua = max4(1,2,3,-6);
ketqua = max4(6,-9,8,4);
while(1);
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
AREA bai10_4,code
ALIGN
max4
PROC
EXPORT max4
;ham tinh max 4 so nguyen co dau
;vao : r0-r4 chua 4 so nguyen
;ra : r0 chua max
cmp
r0,r1
movlt
r0,r1
cmp
r0,r2
movlt
r0,r2
cmp
r0,r3
movlt
r0,r3
bx lr
ENDP
7 TKiemTraDoiXung_C Call
a. C Program
;if(r0
r0 = r1
;if(r0
r0 = r2
;if(r0
r0 = r3
#include "stm32L1xx.h"
extern int sodoixung(int);
int ketqua = 0xffffffff;
int main(){
__asm{
nop
}
ketqua = sodoixung(121);
//ketqua = sodoixung(1121);
//ketqua = sodoixung(1234554321);
//ketqua = sodoixung(111011);
//ketqua = sodoixung(0);
while(1);
}
b. Assemply Program
;******************** (C) Yifeng ZHU ********************
; @file
main.s
; @author Yifeng Zhu
; @version V1.0.0
; @date
May-5-2012
; @note
; @brief Assembly code for STM32L1xx Discovery Kit
; @note
;
This code is for the book "Embedded Systems with ARM Cortex-M3
;
Microcontrollers in Assembly Language and C, Yifeng Zhu,
;
ISBN-10: 0982692625.
; @attension
;
This code is provided for education purpose. The author shall not be
;
held liable for any direct, indirect or consequential damages, for any
;
reason whatever. More information can be found from book website:
;
/>
;********************************************************
; STM32L1xx Discovery Kit:
; - USER Pushbutton: connected to PA0 (GPIO Port A, PIN 0), CLK
RCC_AHBENR_GPIOAEN
; - RESET Pushbutton: connected RESET
; - GREEN LED: connected to PB7 (GPIO Port B, PIN 7), CLK
RCC_AHBENR_GPIOBEN
; - BLUE LED: connected to PB6 (GPIO Port B, PIN 6), CLK
RCC_AHBENR_GPIOBEN
; - Linear touch sensor/touchkeys: PA6, PA7 (group 2), PC4, PC5 (group 9), PB0,
PB1 (group 3)
INCLUDE stm32l1xx_constants.s
; Load Constant Definitions
INCLUDE stm32l1xx_tim_constants.s ; TIM Constants
AREA bai10_7,code
ALIGN
sodoixung
EXPORT
PROC
sodoixung
;ham kiem tra so doi xung
;vao : r0 chua so can kiem tra
;ra : r0 = 1 neu la so doi xung va nguoc lai
push {lr,r4,r5,r6}
mov
r6,sp
;luu gia tri sp lai de tao bien cuc bo trong stack
cmp
r0,#0
;if(r0 == 0)
moveq
r0,#1
beq
ketthuc
return 1
sub r4,sp,#4
;luu vao r4 dia chi cua phan tu dau tien
mov r1,r0
;luu doi so vao r1, de r0 lam ket qua tra ve
mov r0,#1
;khoi tao ket qua tra ve la 1
mov r2,#10
;dung trong phep chia
lap
cmp r1,#0
;dua cac chu so cua r0 vao stack
beq
kiemtra
udiv r3,r1,r2
mls
;r3 = r1%r2
r3,r2,r3,r1
push {r3}
;luu vao trong stack de kiem tra doi xung
udiv
r1,r2
b
lap
kiemtra
mov r3,r4
;r3 lap tu dau day
mov
r2,sp
;r2 lap tu cuoi day
loop
cmp r2,r3
;while r2
bhs
ketthuc
ldr
r4,[r2]
ldr
r5,[r3]
cmp
r4,r5
movne
r0,#0
;r0 = 0
bne
ketthuc
;break
add
r2,#4
;else, tang r2, giam r3, tiep tuc lap
sub
r3,#4
b
loop
ketthuc
mov sp,r6
pop {lr,r4,r5,r6}
bx
ENDP
;if string[r1] != string[r2]
lr
