[Kernel Porting] Dot matrix와 tactsw를 이용한 사칙연산

작업 환경

-메인 OS : Windows 8.1K(Intel Core i5-4590)

-작업 OS : Ubuntu 14.04.5 LTS 64bit(VirtualBox)

-장 비 명 : Hybus-Smart4412

dot3.c

#include<termios.h>

#include<stdio.h>

#include<stdlib.h>

#include<fcntl.h>

#include<unistd.h>

#include<string.h>

#include<sys/types.h>

#include<asm/ioctls.h>

#define tact_d "/dev/tactsw"

#define dot "/dev/dot"

void showcalc(int *num, char op, int *i);

void result(int res);

int main()

{

int tact, i=0;

unsigned char c;

int num[2];

char op;

tact=open(tact_d, O_RDWR);

if(tact<0)

{

printf("open failed\n");

}

while(1)

{

while(1)

{

read(tact, &c, sizeof(unsigned char)); //보드에서 입력 넣을때

usleep(100000);

if(c)

break;

}

 

switch(c)

{

case 1:printf("Input >> 1\n");num[i]=1;i++;result(1);sleep(1);break;

case 2:printf("Input >> 2\n");num[i]=2;i++;result(2);sleep(1);break;

case 3:printf("Input >> 3\n");num[i]=3;i++;result(3);sleep(1);break;

case 4:printf("Input >> 4\n");num[i]=4;i++;result(4);sleep(1);break;

case 5:printf("Input >> 5\n");num[i]=5;i++;result(5);sleep(1);break;

case 6:printf("Input >> 6\n");num[i]=6;i++;result(6);sleep(1);break;

case 7:printf("Input >> +\n");op='+';result(10);sleep(1);break;

case 8:printf("Input >> -\n");op='-';result(11);sleep(1);break;

case 9:printf("Input >> *\n");op='*';result(12);sleep(1);break;

case 10:printf("Input >> /\n");op='/';result(13);sleep(1);break;

case 11:showcalc(num, op, &i);break;

case 12:printf("program shutdown\n");return;

}

}

close(tact);

return 0;

}

void showcalc(int *num, char op, int *i)

{

int res;

switch(op)

{

case '+':printf("Output >> %d\n", num[0]+num[1]);res=num[0]+num[1];break;

case '-':printf("Output >> %d\n", num[0]-num[1]);res=num[0]-num[1];break;

case '*':printf("Output >> %d\n", num[0]*num[1]);res=num[0]*num[1];break;

case '/':printf("Output >> %d\n", num[0]/num[1]);res=num[0]/num[1];break;

}

*i=0;

result(res);

}

void result(int res)

{

int dot_d;

unsigned char zero[14][8] ={{0x3C, 0x66, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x00}, //zero

{0x18, 0x38, 0x78, 0x18, 0x18, 0x18, 0x7E, 0x00}, //one

{0x3C, 0x66, 0x06, 0x1C, 0x30, 0x60, 0x7E, 0x00}, //two

{0x3C, 0x66, 0x06, 0x1C, 0x06, 0x66, 0x3C, 0x00}, //three

{0x0C, 0x1C, 0x3C, 0X6C, 0x7E, 0x0C, 0x0C, 0x00}, //four

{0x7E, 0x60, 0x7C, 0x06, 0x06, 0x66, 0x3C, 0x00}, //five

{0x1C, 0x30, 0x60, 0x7C, 0x66, 0x66, 0x3C, 0x00}, //six

{0x7E, 0x06, 0x0C, 0x18, 0x30, 0x30, 0x30, 0x00}, //seven

{0x3C, 0x66, 0x66, 0x3C, 0x66, 0x66, 0x3C, 0x00}, //eight

{0x3C, 0x66, 0x66, 0x3E, 0x06, 0x0C, 0x38, 0x00}, //nine

{0x18, 0x18, 0x18, 0xff, 0xff, 0x18, 0x18, 0x18},

{0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00},

{0xC3, 0x66, 0x3C, 0x18, 0x18, 0x3C, 0x66, 0xC3},

{0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x80}};

dot_d = open(dot, O_RDWR);

write(dot_d, &zero[res], sizeof(zero[res]));

usleep(450000);

close(dot_d);

}

1. 초기설정

sudo apt-get install gcc-4.4 g++-4.4 g++-4.4-multilib gcc-4.4-multilib lib32z1

2. 컴파일

/opt/gnueabi/opt/ext-toolchain/bin/arm-linux-gnueabihf-gcc dot3.c -o dot3

3. Test

- 윈도우(메인 OS)로 실행파일 복사

- Tera Term에서 포트 설정 후  설정 -> 시리얼 포트 -> 속도를 115200으로 설정

- Hybus-Smart4412 장비 부팅

- 메뉴 -> 전송 -> ZMODEM -> 보내기 에서 실행파일 선택

- chmod 777 [실행파일명]  (실행파일 권한 설정)

- ./[실행파일명]  (실행 후 테스트)

(★중요 : 만약 소스파일을 수정 했다면 Tera Term 에서 먼저 rm [실행파일명] 을 한 뒤 다시 ZMODEM -> 보내기 에서 실행파일 선택 후 chmod 777 [실행파일명] 와 ./[실행파일명] 다시 실행)