git.defcon.no Git - hm-trp-tool/blob - serial.c

   1 #include "serial.h"
   2
   3 int open_port ( char* device, int rate )
   4 {
   5         int f;
   6         struct termios tio;
   7
   8         f = open ( device, O_RDWR | O_NOCTTY ); // Not using O_NDELAY, that caused ERR11: temp unavail.
   9         if ( f < 0 )
  10         {
  11                 return(-1);
  12         }
  13
  14         tio.c_cflag = rate | CS8 | CLOCAL | CREAD;
  15
  16         // 8 bits, local mode, read enabled
  17         tio.c_cflag |= CS8 | CLOCAL | CREAD;
  18
  19         // no flow-control,
  20         tio.c_cflag &= ~CRTSCTS;
  21
  22         // no parity
  23         tio.c_iflag = IGNPAR;
  24
  25         tio.c_oflag = 0;
  26         tio.c_lflag = 0; // Non-canonical read, no other options.
  27         tio.c_cc[VMIN] = 0; // Disable minimum characters for read
  28         tio.c_cc[VTIME] = 5; // Wait for a max of 0.5 second
  29
  30         tcsetattr(f,TCSANOW,&tio); // Apply this now.
  31
  32         tcflush(f, TCIFLUSH); //  the serial input buffer.
  33
  34         return f;
  35 }