C++ and Serial Ports ?

Eng_Bandar said:

I don't want begin wiht new programming language (C#, Java, ...etc).
Any simple tutorials, Any advices, Any simple codes (like send 'a' through serial port).

Click to expand...

SerialPort serialPort1;
serialPort1 = new System.IO.Ports.SerialPort();
serialPort1.BaudRate = 9600;
serialPort1.PortName = "COM1";
serialPort1.Open();
serialPort1.Write('a');

/** Initialize the serial port for data transfer with ATmega88.*/
int com2_initialize(void){
  int fd;

  // Initialize the serial device
  fd = open(COM2_DEVICE, O_RDWR | O_NOCTTY);
  // Returns error if failed to initialize the device.
  if(fd < 0){
    writelog("rs232laser", "failed to initialize serial device, fd was %i", fd);
    return 0;
  }

  // Get and save the current serial port settings.
  tcgetattr(fd, &presentTermIO);

  // Initialize structure for new port settings.
  memset(&newTermIO, 0, sizeof(newTermIO));

  /*
    Set necessary attributes for port.
    Attributes:
    
    BAUDRATE = bps rate
    CS8 = 8bit, no parity, 1 stopbit
    CLOCAL = local connection, no modem
    CREAD = enable port for receiving characters
  */
  newTermIO.c_cflag = COM2_BAUDRATE | CS8 | CLOCAL | CREAD;

  // Enable raw output.
  newTermIO.c_oflag = 0;

  // Set input mode to non-canonical.
  newTermIO.c_lflag = 0;

  // Non-canonical input processing parameters.
  newTermIO.c_cc[VMIN] = COM2_MAX_INPUTSIZE;
  newTermIO.c_cc[VTIME] = COM2_TIMEOUT;

  // Clean the modem line and activate the settings for the port.
  tcflush(fd, TCIFLUSH);
  tcsetattr(fd, TCSANOW, &newTermIO);

  return fd;

}

misterT said:

You could give C# a chance.

This is serial port code in C#:

Code:

SerialPort serialPort1;
serialPort1 = new System.IO.Ports.SerialPort();
serialPort1.BaudRate = 9600;
serialPort1.PortName = "COM1";
serialPort1.Open();
serialPort1.Write('a');

This is serial port code in C (small part of it):

Code:

/** Initialize the serial port for data transfer with ATmega88.*/
int com2_initialize(void){
  int fd;

  // Initialize the serial device
  fd = open(COM2_DEVICE, O_RDWR | O_NOCTTY);
  // Returns error if failed to initialize the device.
  if(fd < 0){
    writelog("rs232laser", "failed to initialize serial device, fd was %i", fd);
    return 0;
  }

  // Get and save the current serial port settings.
  tcgetattr(fd, &presentTermIO);

  // Initialize structure for new port settings.
  memset(&newTermIO, 0, sizeof(newTermIO));

  /*
    Set necessary attributes for port.
    Attributes:
    
    BAUDRATE = bps rate
    CS8 = 8bit, no parity, 1 stopbit
    CLOCAL = local connection, no modem
    CREAD = enable port for receiving characters
  */
  newTermIO.c_cflag = COM2_BAUDRATE | CS8 | CLOCAL | CREAD;

  // Enable raw output.
  newTermIO.c_oflag = 0;

  // Set input mode to non-canonical.
  newTermIO.c_lflag = 0;

  // Non-canonical input processing parameters.
  newTermIO.c_cc[VMIN] = COM2_MAX_INPUTSIZE;
  newTermIO.c_cc[VTIME] = COM2_TIMEOUT;

  // Clean the modem line and activate the settings for the port.
  tcflush(fd, TCIFLUSH);
  tcsetattr(fd, TCSANOW, &newTermIO);

  return fd;

}

Click to expand...