Dev C++ Serial Port Interfacing

[RFdata]

c++ serial port

Hi, i´m trying to interface serial port using DEV c++, when i used an old Dos compiler everything was easy simply use outport and inport, now for windows it´s very different, but I sussefull put data on serial out, the problem is that I can´t read data from RX pin.
It only receives the data A that is the output, but there is no loop back from the TX to RX on the serial pins, so where it get that value?
I using this code

Any help is welcome
Tanks

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Code C++ - [expand]
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#include <conio.h>
#include <stdio.h>
#include <windows.h>
#include <bios.h>
 
// Flow control flags
 
#define FC_DTRDSR       0x01
#define FC_RTSCTS       0x02
#define FC_XONXOFF      0x04
 
 
using namespace std;
    // variables used with the com <strong class="highlight">port[/b]
    BOOL            bPortReady;
    DCB                dcb;
    COMMTIMEOUTS    CommTimeouts;
    BOOL            bWriteRC;
    BOOL            bReadRC;
    DWORD            iBytesWritten;
    DWORD            iBytesRead;
 
HANDLE SerialInit(char *ComPortName, int BaudRate) 
{
    HANDLE hComm;
    
    hComm = CreateFile(ComPortName, 
        GENERIC_READ | GENERIC_WRITE,
        0, // exclusive access
        NULL, // no security
        OPEN_EXISTING,
        0, // no overlapped I/O
        NULL); // null template 
 
    bPortReady = SetupComm(hComm, 1, 128); // set buffer sizes
 
 
    bPortReady = GetCommState(hComm, &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(hComm, &dcb);
 
    // Communication timeouts are optional
 
    bPortReady = GetCommTimeouts (hComm, &CommTimeouts);
 
    CommTimeouts.ReadIntervalTimeout = 5;
    CommTimeouts.ReadTotalTimeoutConstant = 5;
    CommTimeouts.ReadTotalTimeoutMultiplier = 1;
    CommTimeouts.WriteTotalTimeoutConstant = 5;
    CommTimeouts.WriteTotalTimeoutMultiplier = 1;
 
    bPortReady = SetCommTimeouts (hComm, &CommTimeouts);
 
    return hComm;
}
 
 
char SerialGetc(HANDLE *hComm)
{
    char rxchar;
    BOOL    bReadRC;
    static    DWORD    iBytesRead;
 
    bReadRC = ReadFile(*hComm, &rxchar, 1, &iBytesRead, NULL);
 
    return rxchar;
}
 
void SerialPutc(HANDLE *hComm, char txchar)
{
    BOOL    bWriteRC;
    static    DWORD    iBytesWritten;
    
    bWriteRC = WriteFile(*hComm, &txchar, 1, &iBytesWritten,NULL);
    
    return;
}
 
int main()
{
    HANDLE my=SerialInit("COM1",9600);
    
    char letter;
    printf("test\n");
        
    HANDLE *ptr;
    *ptr=my;
    
     
    for( ; ; )
    {
           
    SerialPutc(ptr,'A');     
    printf(" %c ",SerialGetc(ptr));
     getch();
    }
          
    return 0;    
}

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[idlebrain]

dev c++ serial

in msVC++ and devC++ it is same. As they both can use windows system calls.

 

[whsiung]

c++ serial

I think you should check this article:
https://www.codeproject.com/KB/system/serial.aspx

Good luck.

 

[abo_obayd]

dev c++ serial port

Hi,

Check this out.
https://abdelrahman101.spaces.live.com/

I hope its useful.

Good Luck.

 

[hero0765]

thanks
Good Luck.