[Kernel Porting-5] H-Smart4412 FND(7-Segment) 점멸하기

작업 환경

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

-작업 OS : Ubuntu 14.04 64bit(VirtualBox)

-장 비 명 : H-Smart4412

 

1. fnd.c - FND에 '0000' 띄우기

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <string.h> #define fnd "/dev/fnd"   int main() {     int fnd_d;     unsigned char fnd_data[4];       if((fnd_d = open(fnd,O_RDWR)) < 0)     {         perror("open");         exit(1);      }       fnd_data[0] = 0xC0;     fnd_data[1] = 0xC0;     fnd_data[2] = 0xC0;     fnd_data[3] = 0xC0;     write(fnd_d,fnd_data,sizeof(fnd_data));     sleep(5);       return 0; }

 

2. fnd_float.c - FND 소수점 표현하기

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <string.h> #define fnd "/dev/fnd" #define ONE 0b11111001 #define TWO 0b10100100 #define THREE 0b10110000 #define FOUR 0b10011001 #define FIVE 0b10010010 #define SIX 0b10000010 #define SEVEN 0b11111000 #define EIGHT 0b10000000 #define NINE 0b10010000 #define ZERO 0b11000000 #define DOT 0b01111111   void fnd_print(char,int);   unsigned char fnd_data[4]; int idex=0;   int main() {     int fnd_d, i;     char buf[5];       if((fnd_d = open(fnd,O_RDWR)) < 0)     {         perror("open");         exit(1);     }       while(1)     {         fnd_data[0] = 0b11111111;         fnd_data[1] = 0b11111111;         fnd_data[2] = 0b11111111;         fnd_data[3] = 0b11111111;         write(fnd_d,&fnd_data,sizeof(fnd_data));           scanf("%s",buf);           fnd_print(buf[0],idex);         idex++;         fnd_print(buf[1],idex);         idex++;         fnd_print(buf[2],idex);         idex++;         fnd_print(buf[3],idex);         write(fnd_d,&fnd_data,sizeof(fnd_data));            sleep(10);     }     close(fnd_d);     return 0; }   void fnd_print(char buff,int idx) {     switch(buff)     {         case '1': fnd_data[idx] = ONE;                  break;         case '2': fnd_data[idx] = TWO;                  break;         case '3': fnd_data[idx] = THREE;                  break;         case '4': fnd_data[idx] = FOUR;                  break;         case '5': fnd_data[idx] = FIVE;                  break;         case '6': fnd_data[idx] = SIX;                  break;         case '7': fnd_data[idx] = SEVEN;                  break;         case '8': fnd_data[idx] = EIGHT;                  break;         case '9': fnd_data[idx] = NINE;                  break;         case '0': fnd_data[idx] = ZERO;                  break;         case '.': fnd_data[idx-1] &= DOT;                  idex--;                  break;         default : return;    } }

3. fnd_number.c - 키보드 입력한 숫자 FND에 표현하기

#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <string.h> #define fnd "/dev/fnd" int main() {     int fnd_d, sw=1;     unsigned char fnd_data[4];     if((fnd_d = open(fnd,O_RDWR)) < 0)     {         perror("open");         exit(1);     }         while(sw!=0)     {         fnd_data[0] = 0b11111111;         fnd_data[1] = 0b11111111;         fnd_data[2] = 0b11111111;         fnd_data[3] = 0b11111111;         write(fnd_d,&fnd_data,sizeof(fnd_data));         scanf("%d",&sw);                 switch(sw)         {             case 1: fnd_data[0] = 0b11111001;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 2: fnd_data[0] = 0b10100100;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 3: fnd_data[0] = 0b10110000;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 4: fnd_data[0] = 0b10011001;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 5: fnd_data[0] = 0b10010010;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 6: fnd_data[0] = 0b10000010;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 7: fnd_data[0] = 0b11111000;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 8: fnd_data[0] = 0b10000000;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;             case 9: fnd_data[0] = 0b10010000;                 write(fnd_d,&fnd_data,sizeof(fnd_data));                 break;         }         sleep(1);     }     close(fnd_d);     return 0; }