Method Init

cpp/src/platform/unix/SerialControllerImpl.cpp:183–315

----------------------------------------------------------------------------- Initialize the serial port -----------------------------------------------------------------------------

// Initialize the serial port
//-----------------------------------------------------------------------------
bool SerialControllerImpl::Init
(
	uint32 const _attempts
)
{  

	string device = m_owner->m_serialControllerName;
	
	Log::Write( LogLevel_Info, "Trying to open serial port %s (attempt %d)", device.c_str(), _attempts );
	
#ifdef __NetBSD__
	m_hSerialController = open( device.c_str(), O_RDWR | O_NOCTTY | O_NONBLOCK);
#else
	m_hSerialController = open( device.c_str(), O_RDWR | O_NOCTTY, 0 );
#endif

	if( -1 == m_hSerialController )
	{
		//Error
		Log::Write( LogLevel_Error, "ERROR: Cannot open serial port %s. Error code %d", device.c_str(), errno );
		goto SerialOpenFailure;
	}

	if( flock( m_hSerialController, LOCK_EX | LOCK_NB) == -1 )
	{
		Log::Write( LogLevel_Error, "ERROR: Cannot get exclusive lock for serial port %s. Error code %d", device.c_str(), errno );
	}

	int bits;
	bits = 0;
	ioctl( m_hSerialController, TIOCMSET, &bits );

	// Configure the serial device parameters
	// Build on the current configuration
	struct termios tios;

	bzero( &tios, sizeof(tios) );
	tcgetattr( m_hSerialController, &tios );
	switch( m_owner->m_parity )
	{
		case SerialController::Parity_None:
			tios.c_iflag = IGNPAR;
			break;
		case SerialController::Parity_Odd:
			tios.c_iflag = INPCK;
			tios.c_cflag = PARENB | PARODD;
			break;
		default:
			Log::Write( LogLevel_Error, "ERROR: Parity not supported" );
			goto SerialOpenFailure;
	}
	switch( m_owner->m_stopBits )
	{
		case SerialController::StopBits_One:
			break;		// default
		case SerialController::StopBits_Two:
			tios.c_cflag |= CSTOPB;
			break;