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Commit b5811d13 authored by BeomSooHeo's avatar BeomSooHeo
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0814

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mutex/1.mytwothread.c → multi_Thread/1.mytwothread.c
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mutex/2.mymutexthread_st.c → multi_Thread/2.mymutexthread_st.c
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multi_Thread/ledThreads/0.mp4 0 → 100644
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multi_Thread/ledThreads/1.mp4 0 → 100644
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multi_Thread/ledThreads/2.mp4 0 → 100644
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multi_Thread/ledThreads/2020_08_14.md 0 → 100644
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# 2020_08_14_multiThreading
<P>라즈베리파이에 LED 3개(빨강, 노랑, 초록)을 연결하여 입력에 따라 이들을 동시에 제어하는 응용 프로그램 작성</p>
## 0. Conditons & Usage
#### Condition:
빨강색 LED는 1초 간격으로 ON/OFF를 반복한다.
초록색 LED는 2초 간격으로 ON/OFF를 반복한다.
노랑색 LED는 3초 간격으로 ON/OFF를 반복한다.
<br>
#### Usage:
<br>
<p>
입력형식은 다음과 같다.
<strong>./led_main [control] [repetition]</strong>
</p><br>
<p>
control : 제어할 LED 조합을 결정. 아무 값도 전달하지 않거나 1~3까지의 자연수
1 : 빨강색 LED와 초록색 LED
2 : 빨강색 LED와 노랑색 LED
3 : 모든 3개의 LED
</p><br>
<p>
repetition : 빨강색을 제외한 나머지 LED들의 ON/OFF 반복 횟수 결정. 아무 값도 전달하지 않거나 그 외의 자연수.
입력값에 상관없이 항상 빨강색 LED는 1초 간격으로 10초간 ON/OFF를 반복한다.
따라서 control과 repetition을 전달하지 않을 경우 빨강색 LED만 켜진다.
</p><br>
ex) ./led_main //빨강색 LED만 1초 간격으로 ON/OFF 반복<br>
ex) ./led_main 1 5 //빨강색 LED는 1초 간격으로 10회on/off 반복, 초록색 LED는 2초 간격으로 5회 on/off.<br>
ex) ./led_main 2 7 //빨강색 LED는 1초 간격으로 10회 on/off 반복, 노랑색 LED는 3초 간격으로 7회on/off.<br>
ex) ./led_main 3 6//빨강색 LED는 1초 간격으로 10회on/off 반복, 초록색 LED는 2초간격으로, 노랑색 LED는3초 간격으로 각각 6회on/off.
<br>
## 1. Thread Functions
```c
void* led_red (void * args);
void* led_green (void * args);
void* led_yellow (void * args);
```
pthread_create를 통해 입력에 따라 Thread를 생성할 때 위 함수들을 전달한다.
각 함수들은 반복 횟수를 void type pointer인 args를 통해 led의 ON/OFF를 제어한다.
## 2. Makefile
#### 2-1) Makefile을 작성하여 make
<br><br>
![image](/uploads/16b3b6c7205d54f60e62b9019c4fe245/image.png)
<br><br>
make를 입력한 후 생성된 응용 프로그램을 실행한다.<br>
#### 2-2) CMake를 통한 Makefile 생성
<br><br>
![image](/uploads/13b2c5b53b7357a5cb57441318c3506e/image.png)
<br><br>
CMakeLists.txt를 작성한 후, cmake CMakeLists.txt를 입력한다.
<strong>이때 주의할점은 파일명이 반드시 CMakeLists.txt 이어야한다는 점이다. </strong>
<br><br>
![image](/uploads/0e4037e63b8ce50195680ae6ee245943/image.png)
<br><br>
Makefile이 생성된 후, make를 입력하여 응용 프로그램을 생성하고 이를 실행한다. <br>
## 3. Test
<br><br>
#### 3-1) ./main
<video>
<source src = "0.mp4" type = "video/mp4">
</video>
<br><br>
#### 3-2) ./main 1 5
<video>
<source src = "1.mp4" type = "video/mp4">
</video>
<br><br>
#### 3-2) ./main 2 7
<video>
<source src = "2.mp4" type = "video/mp4">
</video>
<br><br>
#### 3-2) ./main 3 6
<video>
<source src = "3.mp4" type = "video/mp4">
</video>
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multi_Thread/ledThreads/3.mp4 0 → 100644
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multi_Thread/ledThreads/CMakeLists.txt 0 → 100644
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ADD_EXECUTABLE(led_main led_main.c led_green.c led_yellow.c)
target_link_libraries( led_main pthread wiringPi )
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multi_Thread/ledThreads/Makefile 0 → 100644
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SRCS = led_main.c led_green.c led_yellow.c
OBJS = $(SRCS:.c=.o)
cc = gcc
link = -lpthread -lwiringPi
led_main : $(OBJS)
$(cc) -o $@ $^ $(link)
.o :
$(cc) -c $<
clean:
-rm $(OBJS)
rm led_main
dep:
gccmakedep $(SRCS)
# DO NOT DELETE
led_main.o: led_main.c /usr/include/stdc-predef.h led.h \
/usr/include/stdio.h /usr/include/features.h \
/usr/include/arm-linux-gnueabihf/sys/cdefs.h \
/usr/include/arm-linux-gnueabihf/bits/wordsize.h \
/usr/include/arm-linux-gnueabihf/gnu/stubs.h \
/usr/include/arm-linux-gnueabihf/gnu/stubs-hard.h \
/usr/lib/gcc/arm-linux-gnueabihf/6/include/stddef.h \
/usr/include/arm-linux-gnueabihf/bits/types.h \
/usr/include/arm-linux-gnueabihf/bits/typesizes.h /usr/include/libio.h \
/usr/include/_G_config.h /usr/include/wchar.h \
/usr/lib/gcc/arm-linux-gnueabihf/6/include/stdarg.h \
/usr/include/arm-linux-gnueabihf/bits/stdio_lim.h \
/usr/include/arm-linux-gnueabihf/bits/sys_errlist.h \
/usr/include/stdlib.h /usr/include/arm-linux-gnueabihf/bits/waitflags.h \
/usr/include/arm-linux-gnueabihf/bits/waitstatus.h \
/usr/include/arm-linux-gnueabihf/sys/types.h /usr/include/time.h \
/usr/include/endian.h /usr/include/arm-linux-gnueabihf/bits/endian.h \
/usr/include/arm-linux-gnueabihf/bits/byteswap.h \
/usr/include/arm-linux-gnueabihf/bits/byteswap-16.h \
/usr/include/arm-linux-gnueabihf/sys/select.h \
/usr/include/arm-linux-gnueabihf/bits/select.h \
/usr/include/arm-linux-gnueabihf/bits/sigset.h \
/usr/include/arm-linux-gnueabihf/bits/time.h \
/usr/include/arm-linux-gnueabihf/sys/sysmacros.h \
/usr/include/arm-linux-gnueabihf/bits/pthreadtypes.h \
/usr/include/alloca.h \
/usr/include/arm-linux-gnueabihf/bits/stdlib-float.h \
/usr/include/string.h /usr/include/xlocale.h /usr/include/unistd.h \
/usr/include/arm-linux-gnueabihf/bits/posix_opt.h \
/usr/include/arm-linux-gnueabihf/bits/environments.h \
/usr/include/arm-linux-gnueabihf/bits/confname.h /usr/include/getopt.h \
/usr/include/pthread.h /usr/include/sched.h \
/usr/include/arm-linux-gnueabihf/bits/sched.h \
/usr/include/arm-linux-gnueabihf/bits/setjmp.h /usr/include/wiringPi.h
led_green.o: led_green.c /usr/include/stdc-predef.h led.h \
/usr/include/stdio.h /usr/include/features.h \
/usr/include/arm-linux-gnueabihf/sys/cdefs.h \
/usr/include/arm-linux-gnueabihf/bits/wordsize.h \
/usr/include/arm-linux-gnueabihf/gnu/stubs.h \
/usr/include/arm-linux-gnueabihf/gnu/stubs-hard.h \
/usr/lib/gcc/arm-linux-gnueabihf/6/include/stddef.h \
/usr/include/arm-linux-gnueabihf/bits/types.h \
/usr/include/arm-linux-gnueabihf/bits/typesizes.h /usr/include/libio.h \
/usr/include/_G_config.h /usr/include/wchar.h \
/usr/lib/gcc/arm-linux-gnueabihf/6/include/stdarg.h \
/usr/include/arm-linux-gnueabihf/bits/stdio_lim.h \
/usr/include/arm-linux-gnueabihf/bits/sys_errlist.h \
/usr/include/stdlib.h /usr/include/arm-linux-gnueabihf/bits/waitflags.h \
/usr/include/arm-linux-gnueabihf/bits/waitstatus.h \
/usr/include/arm-linux-gnueabihf/sys/types.h /usr/include/time.h \
/usr/include/endian.h /usr/include/arm-linux-gnueabihf/bits/endian.h \
/usr/include/arm-linux-gnueabihf/bits/byteswap.h \
/usr/include/arm-linux-gnueabihf/bits/byteswap-16.h \
/usr/include/arm-linux-gnueabihf/sys/select.h \
/usr/include/arm-linux-gnueabihf/bits/select.h \
/usr/include/arm-linux-gnueabihf/bits/sigset.h \
/usr/include/arm-linux-gnueabihf/bits/time.h \
/usr/include/arm-linux-gnueabihf/sys/sysmacros.h \
/usr/include/arm-linux-gnueabihf/bits/pthreadtypes.h \
/usr/include/alloca.h \
/usr/include/arm-linux-gnueabihf/bits/stdlib-float.h \
/usr/include/string.h /usr/include/xlocale.h /usr/include/unistd.h \
/usr/include/arm-linux-gnueabihf/bits/posix_opt.h \
/usr/include/arm-linux-gnueabihf/bits/environments.h \
/usr/include/arm-linux-gnueabihf/bits/confname.h /usr/include/getopt.h \
/usr/include/pthread.h /usr/include/sched.h \
/usr/include/arm-linux-gnueabihf/bits/sched.h \
/usr/include/arm-linux-gnueabihf/bits/setjmp.h /usr/include/wiringPi.h
led_yellow.o: led_yellow.c /usr/include/stdc-predef.h led.h \
/usr/include/stdio.h /usr/include/features.h \
/usr/include/arm-linux-gnueabihf/sys/cdefs.h \
/usr/include/arm-linux-gnueabihf/bits/wordsize.h \
/usr/include/arm-linux-gnueabihf/gnu/stubs.h \
/usr/include/arm-linux-gnueabihf/gnu/stubs-hard.h \
/usr/lib/gcc/arm-linux-gnueabihf/6/include/stddef.h \
/usr/include/arm-linux-gnueabihf/bits/types.h \
/usr/include/arm-linux-gnueabihf/bits/typesizes.h /usr/include/libio.h \
/usr/include/_G_config.h /usr/include/wchar.h \
/usr/lib/gcc/arm-linux-gnueabihf/6/include/stdarg.h \
/usr/include/arm-linux-gnueabihf/bits/stdio_lim.h \
/usr/include/arm-linux-gnueabihf/bits/sys_errlist.h \
/usr/include/stdlib.h /usr/include/arm-linux-gnueabihf/bits/waitflags.h \
/usr/include/arm-linux-gnueabihf/bits/waitstatus.h \
/usr/include/arm-linux-gnueabihf/sys/types.h /usr/include/time.h \
/usr/include/endian.h /usr/include/arm-linux-gnueabihf/bits/endian.h \
/usr/include/arm-linux-gnueabihf/bits/byteswap.h \
/usr/include/arm-linux-gnueabihf/bits/byteswap-16.h \
/usr/include/arm-linux-gnueabihf/sys/select.h \
/usr/include/arm-linux-gnueabihf/bits/select.h \
/usr/include/arm-linux-gnueabihf/bits/sigset.h \
/usr/include/arm-linux-gnueabihf/bits/time.h \
/usr/include/arm-linux-gnueabihf/sys/sysmacros.h \
/usr/include/arm-linux-gnueabihf/bits/pthreadtypes.h \
/usr/include/alloca.h \
/usr/include/arm-linux-gnueabihf/bits/stdlib-float.h \
/usr/include/string.h /usr/include/xlocale.h /usr/include/unistd.h \
/usr/include/arm-linux-gnueabihf/bits/posix_opt.h \
/usr/include/arm-linux-gnueabihf/bits/environments.h \
/usr/include/arm-linux-gnueabihf/bits/confname.h /usr/include/getopt.h \
/usr/include/pthread.h /usr/include/sched.h \
/usr/include/arm-linux-gnueabihf/bits/sched.h \
/usr/include/arm-linux-gnueabihf/bits/setjmp.h /usr/include/wiringPi.h
multi_Thread/ledThreads/led.h 0 → 100644
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <wiringPi.h>
#define RED 4
#define GREEN 5
#define YELLOW 6
#define Interval_RED 1
#define Interval_GREEN 2
#define Interval_YELLOW 3
void* led_green (void * args);
void* led_yellow (void * args);
\ No newline at end of file
multi_Thread/ledThreads/led_green.c 0 → 100644
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#include "led.h"
void* led_green(void * args)
{
pinMode(GREEN, OUTPUT);
for(int i=0; i < (int)args; i++) {
digitalWrite(GREEN, HIGH);
sleep(Interval_GREEN);
digitalWrite(GREEN, LOW);
sleep(Interval_GREEN);
}
pthread_exit(NULL);
}
\ No newline at end of file
multi_Thread/ledThreads/led_main.c 0 → 100644
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#include "led.h"
void* led_red(void * args)
{
pinMode(RED, OUTPUT);
for(int i=0; i < 10; i++) {
digitalWrite(RED, HIGH);
sleep(1);
digitalWrite(RED, LOW);
sleep(1);
}
pthread_exit(NULL);
}
int main(int argc, char *argv[])
{
pthread_t t1, t2, t3;
int set;
int reps;
wiringPiSetup();
if(argc < 2) {
pthread_create(&t1, NULL, led_red, (void *)0);
pthread_exit(NULL);
}
set = atoi(argv[1]);
reps = atoi(argv[2]);
switch(set){
case 1:
pthread_create(&t1, NULL, led_red, (void *)0);
pthread_create(&t2, NULL, led_green, (void *)reps);
pthread_exit(NULL);
break;
case 2:
pthread_create(&t1, NULL, led_red, (void *)0);
pthread_create(&t2, NULL, led_yellow, (void *)reps);
pthread_exit(NULL);
break;
case 3:
pthread_create(&t1, NULL, led_red, (void *)0);
pthread_create(&t2, NULL, led_yellow, (void *)reps);
pthread_create(&t3, NULL, led_green, (void *)reps);
pthread_exit(NULL);
break;
default: break;
}
return 0;
}
\ No newline at end of file
multi_Thread/ledThreads/led_yellow.c 0 → 100644
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#include "led.h"
void* led_yellow(void * args)
{
pinMode(YELLOW, OUTPUT);
for(int i=0; i < (int)args; i++) {
digitalWrite(YELLOW, HIGH);
sleep(Interval_YELLOW);
digitalWrite(YELLOW, LOW);
sleep(Interval_YELLOW);
}
pthread_exit(NULL);
}
\ No newline at end of file
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