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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <sys/types.h>
  4. #include <sys/stat.h>
  5. #include <sys/ioctl.h>
  6. #include <fcntl.h>
  7. #include <termios.h>
  8. #include <unistd.h>
  9.  
  10. #define SERIAL_PORT "/dev/tty.usbmodemfa1311"
  11. #define BAUDRATE B9600
  12. #define BUFSIZE 256
  13.  
  14. #define TRUE 1;
  15. #define FALSE 0;
  16.  
  17. int main(int argc, char* argv[])
  18. {
  19.     printf("program start\n");
  20.     int fd = open(SERIAL_PORT, O_RDWR);
  21.     printf("open");
  22.     if (fd == -1) {
  23.  
  24.         perror("Unable to open serial port\n");
  25.         return -1;
  26.     }
  27.  
  28.     printf("opened\n");
  29.     // 既存のシリアルの設定を取得
  30.     struct termios old_options;
  31.     int ret;
  32.     ret = tcgetattr(fd, &old_options);
  33.  
  34.     /*
  35.     
  36.     // 新しいシリアルの設定を適用
  37.     memset(&new_options, 0, sizeof(new_options));
  38.     new_options.c_cflag = CS8 | CLOCAL | CREAD;
  39.     new_options.c_cc[VTIME] = 0;
  40.     new_options.c_lflag = ICANON;
  41.     new_options.c_iflag = IGNPAR | ICRNL;
  42.     cfsetispeed(&new_options, BAUDRATE);
  43.     cfsetospeed(&new_options, BAUDRATE);
  44.     tcsetattr(fd, TCSANOW, &new_options);
  45.     
  46.     // 通信処理
  47.     int count;
  48.     volatile int STOP = 0;
  49.     char readbuf[BUFSIZE];
  50.     printf("start\n");
  51.     while(STOP == 0){
  52.         memset(readbuf, 0, sizeof(readbuf));
  53.         count = (int)read(fd, &readbuf, BUFSIZE);
  54.         if(count < 0){
  55.             fprintf(stdout, "end\n");
  56.             STOP = 1;
  57.         }else{
  58.             fprintf(stdout, "recv:%s(%d)\n", readbuf, count);
  59.         }
  60.     }
  61.      */
  62.  
  63.     // シリアルの設定を既存のものに戻して終了
  64.     ret = tcsetattr(fd, TCSANOW, &old_options);
  65.     close(fd);
  66.  
  67.     printf("end\n");
  68.     return 0;
  69. }
  70.  
Runtime error #stdin #stdout 0.02s 1676KB
comments (?)
stdin 
Standard input is empty
stdout 
program start
open
https://ideone.com/HGOYeo
language:
C (gcc 8.3)
created:
11 years ago
visibility:
public

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