display received data continously on console

[ganesah]

hi there, i need to create a program to continously display the received binary data (2bytes) from COM 8 in a console, however I'm having problem in doing so where i do nt see any data being displayed on the console after i run and compile the created program. How can i solve this problem? please explain on how to display the data continously.... ...shown below is the programming...p lease check and comment..

im using WIndows XP, Visual C++ 6.0 compiler....

#include <iostream>
#include <conio.h>
#include <stdio.h>
#include <time.h>
#include <windows.h>
#include <string.h>
#include "serial.h"
 
// Flow control flags
 
#define FC_DTRDSR 0x01
#define FC_RTSCTS 0x02
#define FC_XONXOFF 0x04
 
// ascii definitions
 
#define ASCII_BEL 0x07
#define ASCII_BS 0x08
#define ASCII_LF 0x0A
#define ASCII_CR 0x0D
#define ASCII_XON 0x11
#define ASCII_XOFF 0x13
 
using namespace std;
// variables used with the com port
BOOL bPortReady;
DCB dcb;
COMMTIMEOUTS CommTimeouts;
BOOL bWriteRC;
BOOL bReadRC;
DWORD iBytesWritten;
DWORD iBytesRead;
 
 
HANDLE SerialInit(char *ComPortName, int BaudRate) 
    {
        HANDLE hCom;
 
        hCom = CreateFile(ComPortName, 
                GENERIC_READ| GENERIC_WRITE ,
                0, // exclusive access
                NULL, // no security
                OPEN_EXISTING,
                0, // no overlapped I/O
                NULL); // null template 
 
        bPortReady = SetupComm(hCom, 2, 128); // set buffer sizes
 
 
        bPortReady = GetCommState(hCom, &dcb);
        dcb.BaudRate = BaudRate;
        dcb.ByteSize = 8;
        dcb.Parity = NOPARITY;
        // dcb.Parity = EVENPARITY;
        dcb.StopBits = ONESTOPBIT;
        dcb.fAbortOnError = TRUE;
 
        // set XON/XOFF
        dcb.fOutX = FALSE; // XON/XOFF off for transmit
        dcb.fInX = FALSE; // XON/XOFF off for receive
        // set RTSCTS
        dcb.fOutxCtsFlow = FALSE; // turn on CTS flow control
        dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; // 
        // set DSRDTR
        dcb.fOutxDsrFlow = FALSE; // turn on DSR flow control
        dcb.fDtrControl = DTR_CONTROL_ENABLE; // 
        // dcb.fDtrControl = DTR_CONTROL_DISABLE; // 
        // dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; // 
 
        bPortReady = SetCommState(hCom, &dcb);
 
        // Communication timeouts are optional
 
        bPortReady = GetCommTimeouts (hCom, &CommTimeouts);
 
        CommTimeouts.ReadIntervalTimeout = 5000;
        CommTimeouts.ReadTotalTimeoutConstant = 5000;
        CommTimeouts.ReadTotalTimeoutMultiplier = 1000;
        CommTimeouts.WriteTotalTimeoutConstant = 5000;
        CommTimeouts.WriteTotalTimeoutMultiplier = 1000;
 
        bPortReady = SetCommTimeouts (hCom, &CommTimeouts);
 
        return hCom;
    }
 
char SerialGetc(HANDLE *hCom)
{
    char rxchar;
    BOOL bReadRC;
    static DWORD iBytesRead;
 
    bReadRC = ReadFile(*hCom, &rxchar, 2, &iBytesRead, NULL);
    printf("%x", rxchar);
 
    return rxchar;
}
 
void SerialPutc(HANDLE *hCom, char txchar)
{
    BOOL bWriteRC;
    static DWORD iBytesWritten;
 
    bWriteRC = WriteFile(*hCom, &txchar, 1, &iBytesWritten,NULL);
 
    return;
}
 
int main()
{ 
 
 
    HANDLE my=SerialInit("com8",115200);
    char letter;
 
 
    HANDLE *ptr;
    ptr=&my;
    //SerialPutc(ptr,'a'); 
 
        letter=SerialGetc(ptr);
        //printf("%x",letter);
         getch(); 
 
 
    return 0;
}
 

[horace1]

have a look at this serial driver (it works under VC)
http://www.geocities.com/horacespide...V-C/terminal.c
- it emulates a terminal
(1) characters received from the serial port are displayed on the screen
(2) characters hit on keyboard are transmitted out of the serial port

I assume you can do a similar thing with your version