C or C++ program to read data from serial port?

C or C++ program to read data from serial port?
hello

i need a c or c++ program to read data from serial port connected to sick pls laser scanner.model is 200-113.

I have tried several programs in vc++,c,c++ but no one is able to read data serial port.

In one program i am getting msg
xxx.exe:MFC42D.dll:0xc000000: Access violation

When debugged i get
No matching symbol found :kernel32.dll
user32.dll
msvcrt60.dll
and so on.
And finally i get the program ends witih 0×0 code.

in another program it is saying bios.h not found

Whiel in anotehr it says could not able to find outportb()

I dont know the problem is.

But i need one program for this special case ie reading data from serial port connected to sick pls 200-114 laser scanner.
Eagerly waiting for answer
.Any help would be greatly appreciated.

Best answer:

i guess both can be used.. there is some library which provides some methode to read data from serial port

Tags: Data, from, port, program, read, Serial

Under Forum

3 Comments for C or C++ program to read data from serial port?

1. yogesh_baraiya | May 6th, 2009 at 1:23 pm

will have 2 machines hooked up via the COM1 ports.
1 machine running windows having a hyperterminal session opened and the other machine running Linux having my program running.
I want to able to type a character into the hyperterminal window and have the character displayed on the Linux machine.

Im very new to C programming but heres what i have for my program so far, just not sure how to read the input and display it:

#include /*Standard input/output definitions*/
#include /*String function definitions*/
#include /*Unix standard function definitions*/
#include /*File control definitions*/
#include /*Error number definitions*/
#include /*POSIX terminal control definitions*/

int open_port(void)
{
int fd; /* File descriptor for the port */

fd = open(“/dev/ttyS0″, O_RDWR | O_NOCTTY | O_NDELAY);
if(fd == 0)
{
perror(“open_port: Unable to open /dev/ttyS0 – “);
}
else
fcntl(fd, F_SETFL, 0);

return (fd);
}

/*Configire port*/

struct termios options;

/*Get the current options for the port*/

tcgetattr(fd, &options);

/*Set the Baud rates to 19200*/

cfsetispeed(&options, B19200);
cfsetospeed(&options, B19200);

/*Enable received and set local mode*/

options.c_cflag |= (CLOCAL | CREAD);

/*Set new options for port*/

tcsetattr(fd, TCSANOW, &options);

/*Set data bits*/

options.c_cflag &= ~CSIZE; /*Mask the character size bits*/
options.c_cflag |= CS8; /*Select 8 data bits*/

/*Set RAW input*/

options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);

/*Set Raw output*/

options.c_oflag &= ~OPOST;

/*Set timeout to 1 sec*/

options.c_cc[VMIN] = 0;
options.c_cc{VTIME] = 10;

/*Code to read input goes here*/

close(fd);

Can anyone advise on this?

Thanks
2. irf | May 6th, 2009 at 1:49 pm

Here is one program:
fogma.co.uk/foggylog/archive/140.html
also this article should help:
codeproject.com/system/serial.asp

You should know what is expected from your input device, though.
3. justme | May 6th, 2009 at 2:40 pm

I have some c++ serial port code that does what you want. Email me and I will send it to you. I have used it for a few apps. and it seems to work just fine.

C or C++ program to read data from serial port?

3 Comments for C or C++ program to read data from serial port?

Leave a Comment for C or C++ program to read data from serial port?

Categories