/**
* @brief initializer for port, provided that device name is defined
* @param serial_name -- name of the serial device to be opened
* @param baud_rate -- bits-per-sec for the I/O
* @return -- 1 for success 0 for failure
*/
bool UAS_serial::beginPort(const char* serial_name, uint32_t baudrate){
int baudr;
_baudrate = baudrate;
_device_name = serial_name;
mapBaudRate(_baudrate, &baudr); // map baudrate to termios B-- style
_serial_id = open(_device_name, O_RDWR | O_NOCTTY | O_NONBLOCK);
if(_serial_id == -1){
perror("unable to open comport ");
_error = -1;
_port_opened = 0;
return _port_opened;
}
memset(&_port_settings, 0, sizeof(_port_settings)); // setting memory for port
_port_settings.c_cflag = baudr | CS8 | CLOCAL | CREAD;
_port_settings.c_iflag = 0;
_port_settings.c_oflag = 0;
_port_settings.c_lflag = 0;
_port_settings.c_cc[VMIN] = 0; /* block untill n bytes are received */
_port_settings.c_cc[VTIME] = 0; /* block untill a timer expires (n * 100 mSec.) */
_error = tcsetattr(_serial_id, TCSANOW, &_port_settings);
if(_error==-1){
close(_serial_id);
perror("unable to adjust portsettings ");
_port_opened = 0;
return _port_opened;
}
flushIO();
_port_opened = 1;
return _port_opened;
}
VALUE closeIO(VALUE self)
{
PortDescriptor *port = NULL;
Data_Get_Struct(self, PortDescriptor, port);
flushIO(self);
port->status = CloseHandle(port->fd);
port->fd = INVALID_HANDLE_VALUE;
rb_iv_set(self, "@open", INT2FIX(port->status));
return INT2FIX(port->status);
}
