Thread: serial port read

Hi,
I have not been able to find an answer, but I am sure it is here some where. I have tried http://www.iftools.com/ctb.en.html and http://www.codeproject.com/system/serial.asp plus I have read every thing else that I could find.

I am running WIN98 using wx-devcpp. I can not even get the above code samples to compile. Found the above links at the wx-devcpp discussion board.

Problem: I have a pic chip sending data to the pc via serial port, this works as I can recieve with hyper-terminal. How do I set up a C++ program to recieve this data ?? I would like to have the data display into a text box so it can be saved to a database.

Thank you.

check msdn:
http://msdn.microsoft.com/library/de...nfunctions.asp

it has all the functions

Use createFile to get a handle to the serial port and then treat it like a file with read and write.
Amish

Thank you, now it looks like I am getting somewhere. If I can figure out what
"544 C:\DEV-CPP\include\Winbase.h `DWORD' does not name a type " means.

I think it comes from windows.h. Try to include that. Not too sure though
Amish

Changed <Winbase.h> to <windows.h> and now this will compile---

Code:

#include <windows.h>
#include <stdio.h>

HANDLE pic;
main()
{
pic = CreateFile( "COM1",     // address of name of the communications device
      GENERIC_READ | GENERIC_WRITE, // access (read-write) mode
      0,                  // share mode
      NULL,               // address of security descriptor
      OPEN_EXISTING,      // how to create
      0,                  // file attributes
      NULL                // handle of file with attributes to copy
   );
}

Have not had time to try in full program yet, but now I have a starting point.

Thank you for your help!!!

Don't forget that when you call ReadFile on a serial port to always check the number of bytes that were actually read as this can be less then the number requested.

I am taking notes.

Thank you