thanks for taking the time to look at my issue.
I am working with a NFC Encoder device from ToP Tunniste This device creates a virtual serial port. I am trying to read some data into a console application (C++) by swiping RFID tags over the device.
I realize that there is a very similar question over here. I’ve tried everything suggested in that thread, but without success. Apparently the author of that article found a solution but didn’t post it. I can’t contact the author directly and when I try to ask him by answering the question my answer gets deleted.
In the code below you can see that I loop over all com ports to detect the active ones. When a port is detected, I try to open it, which succeeds. But then if I try to read from the device, I always get a “-1030 Timeout when reading from the port”-error, although I am swiping a tag over the device.
When I use the device with the sample software, I am able to read from/write to a RFID tag. So I must be missing something here. Any help would be greatly appreciated!
#include "fecom.h"
#include <iostream>
int main(void)
{
int Err;
char cPortNr[4];
int iRecProtLen;
UCHAR cRecBuf[256];
int handle;
//loop through ports 1 to 256 to detect devices.
for(int iPortNr=1; iPortNr<257; ++iPortNr)
{
if(0 == FECOM_DetectPort( iPortNr ))
{
std::cout << "Detected port: " << iPortNr << std::endl;
itoa( iPortNr, cPortNr, 10 ); // Convert Integer to Char
handle = FECOM_OpenPort( cPortNr ); // COM:cPortNr should be opened
if( handle < 0 )
{
// code here for error condition
std::cout << "Error opening port: COM:" << cPortNr << std::endl;
}
else
{ // Communication through COM:cPortNr, if successful received data are in RecBuf
// code here for communication or other
std::cout << "Successfully connected to port COM:" << cPortNr << std::endl;
std::cout << "Press enter to read from COM:" << cPortNr << " (5s)" << std::endl;
std::cin.get();
Err = FECOM_SetPortPara(handle,"Timeout","5000");
Err = FECOM_SetPortPara(handle,"CharTimeout","5000");
iRecProtLen = FECOM_Receive( handle, cRecBuf, 256 );
if( iRecProtLen < 0 )
{
// Communication error or buffer overflow
if( iRecProtLen == FECOM_ERR_OVL_RECBUF )
{ // Buffer overflow: Data in RecBuf are valid receive data
std::cout << "Buffer overflow error" << std::endl;
}
else
{
char cErrorText[256];
FECOM_GetErrorText(iRecProtLen, cErrorText);
std::cout << "Error: " << iRecProtLen << " " << cErrorText << std::endl;
std::cout << std::endl;
}
}
else
{
std::cout << "Data received: " << cRecBuf << std::endl;
std::cout << std::endl;
}
Err = FECOM_ClosePort(handle);
}
}
}
std::cout << "Program terminated. Press enter to close." <<std::endl;
std::cin.get();
return 0;
}
iRecProtLen = -1030
this is the fecom.h file:
/*-------------------------------------------------------
| |
| fecom.h |
| |
---------------------------------------------------------
Copyright 2000-2010 FEIG ELECTRONIC GmbH, All Rights Reserved.
Lange Strasse 4
D-35781 Weilburg
Federal Republic of Germany
phone : +49 6471 31090
fax : +49 6471 310999
e-mail : obid-support@feig.de
Internet : http://www.feig.de
Author : Markus Hultsch
Version : Windows: 02.08.12 / 25.03.2010 / M. Hultsch
Version : Linux: 02.08.10 / 18.08.2009 / M. Sahm
Version : Windows CE: 02.08.11 / 22.03.2010 / M. Hultsch
Operation Systems : Windows 2000/XP/Vista/7
Linux
Windows CE
This file contains the constants, datatypes and function declartions of FECOM library
*/
#ifndef _FECOM_INCLUDE_H
#define _FECOM_INCLUDE_H
#if defined(_MSC_VER) || defined(__BORLANDC__)
#ifdef FECOMDLL
#define DLL_EXT_FUNC __declspec(dllexport) __stdcall
#else
#define DLL_EXT_FUNC __declspec(dllimport) __stdcall
#endif
#ifndef CALLBACK
#define CALLBACK __stdcall
#endif
#else
#define DLL_EXT_FUNC
#define CALLBACK
#endif
// type defines
#ifdef __GNUC__
#ifndef __int64
#define __int64 long long
#endif
#endif
#ifndef UCHAR
#define UCHAR unsigned char
#endif
#ifndef UINT
#define UINT unsigned int
#endif
#ifdef __cplusplus
extern "C" {
#endif
// #####################################################
// FECOM constants
// #####################################################
// FECOM error codes
// common errors
#define FECOM_ERR_NEWPORT_FAILURE -1000
#define FECOM_ERR_EMPTY_LIST -1001
#define FECOM_ERR_POINTER_IS_NULL -1002
#define FECOM_ERR_NO_MEMORY -1003
#define FECOM_ERR_UNSUPPORTED_HARDWARE -1004
#define FECOM_ERR_PORT_NOT_FOUND -1005
#define FECOM_ERR_UNSUPPORTED -1006
// error while open the port
#define FECOM_ERR_NO_PORT -1010
#define FECOM_ERR_NO_CONNECT -1011
#define FECOM_ERR_LINK_ID -1012
#define FECOM_ERR_PORT_IS_OPEN -1013
// handle errors
#define FECOM_ERR_UNKNOWN_HND -1020
#define FECOM_ERR_HND_IS_NULL -1021
#define FECOM_ERR_HND_IS_NEGATIVE -1022
#define FECOM_ERR_NO_HND_FOUND -1023
// communication errors
#define FECOM_ERR_TIMEOUT -1030
#define FECOM_ERR_NO_SENDPROTOCOL -1031
#define FECOM_ERR_RECEIVE_PROCESS -1032
#define FECOM_ERR_INIT_COMM_PROCESS -1033
#define FECOM_ERR_FLUSH_INPUT_BUFFER -1034
#define FECOM_ERR_FLUSH_OUTPUT_BUFFER -1035
#define FECOM_ERR_CHANGE_PORT_PARA -1036
#define FECOM_ERR_TRANSMIT_PROCESS -1037
#define FECOM_ERR_RECEIVE_NOISE_DATA -1038
#define FECOM_ERR_PORT_IS_BUSY -1039
#define FECOM_ERR_READ_PORT_PARA -1040
// parameter errors
#define FECOM_ERR_UNKNOWN_PARAMETER -1050
#define FECOM_ERR_PARAMETER_OUT_OF_RANGE -1051
#define FECOM_ERR_ODD_PARAMETERSTRING -1052
#define FECOM_ERR_PORTNR_OUT_OF_RANGE -1053
#define FECOM_ERR_UNKNOWN_ERRORCODE -1054
// receive buffer overflow
#define FECOM_ERR_OVL_RECBUF -1070
// constants for dynamic load of library
// miscellaneous functions
#define FECOM_GET_DLL_VERSION 1000
#define FECOM_GET_ERROR_TEXT 1001
#define FECOM_GET_LAST_ERROR 1002
#define FECOM_DETECT_PORT 1003
// functions for event notification
#define FECOM_ADD_EVENT_HANDLER 1010
#define FECOM_DEL_EVENT_HANDLER 1011
// port functions
#define FECOM_OPEN_PORT 1020
#define FECOM_CLOSE_PORT 1021
#define FECOM_GET_PORT_LIST 1022
#define FECOM_GET_PORT_PARA 1023
#define FECOM_SET_PORT_PARA 1024
#define FECOM_DO_PORT_CMD 1025
#define FECOM_GET_PORT_HND 1026
// communication function
#define FECOM_TRANSCEIVE 1030
#define FECOM_TRANSMIT 1031
#define FECOM_RECEIVE 1032
// constants for structure _FECOM_EVENT_INIT
// defines for uiFlag in FECOM_EVENT_INIT
#define FECOM_THREAD_ID 1
#define FECOM_WND_HWND 2
#define FECOM_CALLBACK 3
#define FECOM_EVENT 4
// defines for uiUse in FECOM_EVENT_INIT
#define FECOM_CTS_EVENT 1
#define FECOM_DCD_EVENT 2
#define FECOM_DSR_EVENT 3
#define FECOM_RTS_EVENT 4
#define FECOM_DTR_EVENT 5
#define FECOM_PORT_CLOSED_EVENT 20 // only for Windows CE (customized versions)
#define FECOM_PORT_REOPEN_EVENT 21 // only for Windows CE (customized versions)
// #####################################################
// FECOM structures
// #####################################################
// structure for transfering thread-IDs, message-handles or callbacks
typedef struct _FECOM_EVENT_INIT
{
UINT uiUse; // defines the event (e.g. FECOM_CTS_EVENT)
UINT uiMsg; // message code used with dwThreadID and hwndWnd (e.g. WM_USER_xyz)
UINT uiFlag; // specifies the use of the union (e.g. FECOM_WND_HWND)
union
{
//#if defined(_MSC_VER) || defined(__BORLANDC__)
#if defined(__BORLANDC__)
DWORD dwThreadID; // for thread-ID
HWND hwndWnd; // for window-handle
HANDLE hEvent; // for event-handle
#endif
void (*cbFct)(int, int); // for callback-function
#ifdef __cplusplus
};
#else
}Method;
#endif
} FECOM_EVENT_INIT;
// #####################################################
// FECOM functions
// #####################################################
// miscellaneous functions
void DLL_EXT_FUNC FECOM_GetDLLVersion( char* cVersion );
int DLL_EXT_FUNC FECOM_GetErrorText( int iErrorCode, char* cErrorText );
int DLL_EXT_FUNC FECOM_GetLastError( int iPortHnd, int* iErrorCode, char* cErrorText );
int DLL_EXT_FUNC FECOM_DetectPort( int iPortNr );
// functions for event notification
int DLL_EXT_FUNC FECOM_AddEventHandler(int iPortHnd, FECOM_EVENT_INIT* pInit);
int DLL_EXT_FUNC FECOM_DelEventHandler(int iPortHnd, FECOM_EVENT_INIT* pInit);
// port functions
int DLL_EXT_FUNC FECOM_OpenPort( char* cPortNr );
int DLL_EXT_FUNC FECOM_ClosePort( int iPortHnd );
int DLL_EXT_FUNC FECOM_GetPortList( int iNext );
int DLL_EXT_FUNC FECOM_GetPortPara( int iPortHnd, char* cPara, char* cValue );
int DLL_EXT_FUNC FECOM_SetPortPara( int iPortHnd, char* cPara, char* cValue );
int DLL_EXT_FUNC FECOM_DoPortCmd( int iPortHnd, char* cCmd, char* cValue );
int DLL_EXT_FUNC FECOM_GetPortHnd( char* cPortNr );
// communication function
int DLL_EXT_FUNC FECOM_Transceive( int iPortHnd, UCHAR* cSendProt, int iSendLen, UCHAR* cRecProt, int iRecLen );
int DLL_EXT_FUNC FECOM_Transmit( int iPortHnd, UCHAR* cSendProt, int iSendLen );
int DLL_EXT_FUNC FECOM_Receive( int iPortHnd, UCHAR* cRecProt, int iRecLen );
#undef DLL_EXT_FUNC
#ifdef __cplusplus
}
#endif
// #####################################################
// typedefs of library functions for explicite loading
// #####################################################
// miscellaneous functions
typedef void (CALLBACK* LPFN_FECOM_GET_DLL_VERSION)(char*);
typedef int (CALLBACK* LPFN_FECOM_GET_ERROR_TEXT)(int, char*);
typedef int (CALLBACK* LPFN_FECOM_GET_LAST_ERROR)(int, int*, char*);
typedef int (CALLBACK* LPFN_FECOM_DETECT_PORT)(int);
// functions for event notification
typedef int (CALLBACK* LPFN_FECOM_ADD_EVENT_HANDLER)(int, FECOM_EVENT_INIT*);
typedef int (CALLBACK* LPFN_FECOM_DEL_EVENT_HANDLER)(int, FECOM_EVENT_INIT*);
// port functions
typedef int (CALLBACK* LPFN_FECOM_OPEN_PORT)(char*);
typedef int (CALLBACK* LPFN_FECOM_CLOSE_PORT)(int);
typedef int (CALLBACK* LPFN_FECOM_GET_PORT_LIST)(int);
typedef int (CALLBACK* LPFN_FECOM_GET_PORT_PARA)(int, char*, char*);
typedef int (CALLBACK* LPFN_FECOM_SET_PORT_PARA)(int, char*, char*);
typedef int (CALLBACK* LPFN_FECOM_DO_PORT_CMD)(int, char*, char*);
typedef int (CALLBACK* LPFN_FECOM_GET_PORT_HND)(char*);
// communication function
typedef int (CALLBACK* LPFN_FECOM_TRANSCEIVE)(int, UCHAR*, int, UCHAR*, int);
typedef int (CALLBACK* LPFN_FECOM_TRANSMIT)(int, UCHAR*, int);
typedef int (CALLBACK* LPFN_FECOM_RECEIVE)(int, UCHAR*, int);
#endif // _FECOM_INCLUDE_H
Apparently I need to use a different protocol for communicating with the port.
Although I have to use FECOM to open/close a port, I can’t use it for read/write operations on the device. To do that, I have to use FEISC, a different protocol/library.
As soon as I have some working code, I’ll put it on here, but I think we can consider this issue solved.
Thanks anyway to everyone who took a look at this.