sttybuf & csdbg::sttybuf::config ( ) const

protectedvirtual

Configure the serial interface.

Returns

*this

Exceptions

csdbg::exception

Definition at line 22 of file sttybuf.cpp.

References __D_ASSERT, discard(), m_baud, m_devnode, csdbg::streambuf::m_handle, csdbg::util::memset(), translate_baud(), and unlikely.

Referenced by open(), and set_baud().

{
  __D_ASSERT(m_handle >= 0);
  if ( unlikely(m_handle < 0) )
    return const_cast<sttybuf&> (*this);

  u32 real_baud = translate_baud(m_baud);

  struct termios conf;
  util::memset(&conf, 0, sizeof(struct termios));
  conf.c_cflag = real_baud | CS8 | CRTSCTS | CREAD | CLOCAL;
  conf.c_iflag = IGNPAR;
  conf.c_cc[VMIN] = 1;

  i32 retval;
  do {
    retval = tcsetattr(m_handle, TCSANOW, &conf);
  }
  while ( unlikely(retval < 0 && errno == EINTR) );

  if ( unlikely(retval < 0) )
    throw exception(
      "failed to configure serial interface '%s' (errno %d - %s)",
      m_devnode,
      errno,
      strerror(errno)
    );

  /* Discard all pending data */
  return discard();
}

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