can you find the problem??
-
I am creating a program for a children's ATM for the local kids museum, and I'm having problems sending data to the machine (over RS232). I am using a .dll supplied by the manufacturer that is used to interface the dispenser with a computer. I think the problem is in sending the hex characters to the machine. I open the port fine (according to the generated log file), but then I send and don't recieve the ACK. I'm pretty sure that it is just not sending for some reason. here is the pertinent part of the code. thanks for any help #include "stdafx.h" #include typedef struct { unsigned int uiPort; //communication port unsigned char ucDataBits; //Data bit unsigned char ucParity; //Parity bit unsigned char ucStopBits; //Stop bit unsigned long dwBaudRate; //Baud Rate HWND hwnd; //Parent window handle unsigned char ucCommandType; //command type(1: ezCDM-1000 ) }SETINFO; typedef unsigned int (*EZLINKOPEN)(SETINFO* setInfo); typedef unsigned int (*EZLINKCLOSE)(void); typedef unsigned int (*EZLINKPATH)(PCHAR pcMessage); typedef unsigned int (*EZLINKSEND)(DWORD dwCmdExcuteTime, PUCHAR pcMessage, UINT uiCmdSize); typedef unsigned int (*EZLINKRCV)(PUCHAR pcMessage, UINT *piRspSize); int _tmain(int argc, _TCHAR* argv[]) { //Loading dll------------------------------------------------------------------------------------------ HINSTANCE hdll = NULL; hdll = LoadLibrary(TEXT("ezlink")); //load the dll if (hdll == NULL) { printf("Didn't load dll\n"); //tell me if it failed } //Mapping the dll's functions-------------------------------------------------------------------------------- EZLINKOPEN ezLinkOpen; EZLINKCLOSE ezLinkClose; EZLINKPATH ezLinkPath; EZLINKSEND ezLinkSend; EZLINKRCV ezLinkRcv; ezLinkOpen = (EZLINKOPEN)GetProcAddress(hdll,"ezLinkOpen"); ezLinkClose = (EZLINKCLOSE)GetProcAddress(hdll,"ezLinkClose"); ezLinkPath = (EZLINKPATH)GetProcAddress(hdll,"ezLinkPath"); ezLinkSend = (EZLINKSEND)GetProcAddress(hdll,"ezLinkSend"); ezLinkRcv = (EZLINKRCV)GetProcAddress(hdll,"ezLinkRcv"); //handle the error if(!ezLinkOpen) //end program if dll mapping fails fails { FreeLibrary(hdll); printf("Failed to map open function!\n"); return -1; } else //otherwise, lets send some commands { unsigned int result; //Setting the log path-------------------------------------------------------------------------------------------- char message[] = "C:\\Documents and Settings\\august brower\\My Documents\\Visual Studio 2008\\Projects\\cash machine"; re
-
I am creating a program for a children's ATM for the local kids museum, and I'm having problems sending data to the machine (over RS232). I am using a .dll supplied by the manufacturer that is used to interface the dispenser with a computer. I think the problem is in sending the hex characters to the machine. I open the port fine (according to the generated log file), but then I send and don't recieve the ACK. I'm pretty sure that it is just not sending for some reason. here is the pertinent part of the code. thanks for any help #include "stdafx.h" #include typedef struct { unsigned int uiPort; //communication port unsigned char ucDataBits; //Data bit unsigned char ucParity; //Parity bit unsigned char ucStopBits; //Stop bit unsigned long dwBaudRate; //Baud Rate HWND hwnd; //Parent window handle unsigned char ucCommandType; //command type(1: ezCDM-1000 ) }SETINFO; typedef unsigned int (*EZLINKOPEN)(SETINFO* setInfo); typedef unsigned int (*EZLINKCLOSE)(void); typedef unsigned int (*EZLINKPATH)(PCHAR pcMessage); typedef unsigned int (*EZLINKSEND)(DWORD dwCmdExcuteTime, PUCHAR pcMessage, UINT uiCmdSize); typedef unsigned int (*EZLINKRCV)(PUCHAR pcMessage, UINT *piRspSize); int _tmain(int argc, _TCHAR* argv[]) { //Loading dll------------------------------------------------------------------------------------------ HINSTANCE hdll = NULL; hdll = LoadLibrary(TEXT("ezlink")); //load the dll if (hdll == NULL) { printf("Didn't load dll\n"); //tell me if it failed } //Mapping the dll's functions-------------------------------------------------------------------------------- EZLINKOPEN ezLinkOpen; EZLINKCLOSE ezLinkClose; EZLINKPATH ezLinkPath; EZLINKSEND ezLinkSend; EZLINKRCV ezLinkRcv; ezLinkOpen = (EZLINKOPEN)GetProcAddress(hdll,"ezLinkOpen"); ezLinkClose = (EZLINKCLOSE)GetProcAddress(hdll,"ezLinkClose"); ezLinkPath = (EZLINKPATH)GetProcAddress(hdll,"ezLinkPath"); ezLinkSend = (EZLINKSEND)GetProcAddress(hdll,"ezLinkSend"); ezLinkRcv = (EZLINKRCV)GetProcAddress(hdll,"ezLinkRcv"); //handle the error if(!ezLinkOpen) //end program if dll mapping fails fails { FreeLibrary(hdll); printf("Failed to map open function!\n"); return -1; } else //otherwise, lets send some commands { unsigned int result; //Setting the log path-------------------------------------------------------------------------------------------- char message[] = "C:\\Documents and Settings\\august brower\\My Documents\\Visual Studio 2008\\Projects\\cash machine"; re
August Brower wrote:
result = ezLinkSend(4000,cassette;message,6);
What is this (it looks pretty ugly, with that semicolon...)? You know, without knowing proper command format (probably you've some documentation about) we can give little help to you. BTW: please use
<pre>tags (orcode blockbutton) to enclose code snippets. :)If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles] -
I am creating a program for a children's ATM for the local kids museum, and I'm having problems sending data to the machine (over RS232). I am using a .dll supplied by the manufacturer that is used to interface the dispenser with a computer. I think the problem is in sending the hex characters to the machine. I open the port fine (according to the generated log file), but then I send and don't recieve the ACK. I'm pretty sure that it is just not sending for some reason. here is the pertinent part of the code. thanks for any help #include "stdafx.h" #include typedef struct { unsigned int uiPort; //communication port unsigned char ucDataBits; //Data bit unsigned char ucParity; //Parity bit unsigned char ucStopBits; //Stop bit unsigned long dwBaudRate; //Baud Rate HWND hwnd; //Parent window handle unsigned char ucCommandType; //command type(1: ezCDM-1000 ) }SETINFO; typedef unsigned int (*EZLINKOPEN)(SETINFO* setInfo); typedef unsigned int (*EZLINKCLOSE)(void); typedef unsigned int (*EZLINKPATH)(PCHAR pcMessage); typedef unsigned int (*EZLINKSEND)(DWORD dwCmdExcuteTime, PUCHAR pcMessage, UINT uiCmdSize); typedef unsigned int (*EZLINKRCV)(PUCHAR pcMessage, UINT *piRspSize); int _tmain(int argc, _TCHAR* argv[]) { //Loading dll------------------------------------------------------------------------------------------ HINSTANCE hdll = NULL; hdll = LoadLibrary(TEXT("ezlink")); //load the dll if (hdll == NULL) { printf("Didn't load dll\n"); //tell me if it failed } //Mapping the dll's functions-------------------------------------------------------------------------------- EZLINKOPEN ezLinkOpen; EZLINKCLOSE ezLinkClose; EZLINKPATH ezLinkPath; EZLINKSEND ezLinkSend; EZLINKRCV ezLinkRcv; ezLinkOpen = (EZLINKOPEN)GetProcAddress(hdll,"ezLinkOpen"); ezLinkClose = (EZLINKCLOSE)GetProcAddress(hdll,"ezLinkClose"); ezLinkPath = (EZLINKPATH)GetProcAddress(hdll,"ezLinkPath"); ezLinkSend = (EZLINKSEND)GetProcAddress(hdll,"ezLinkSend"); ezLinkRcv = (EZLINKRCV)GetProcAddress(hdll,"ezLinkRcv"); //handle the error if(!ezLinkOpen) //end program if dll mapping fails fails { FreeLibrary(hdll); printf("Failed to map open function!\n"); return -1; } else //otherwise, lets send some commands { unsigned int result; //Setting the log path-------------------------------------------------------------------------------------------- char message[] = "C:\\Documents and Settings\\august brower\\My Documents\\Visual Studio 2008\\Projects\\cash machine"; re
By looking at following code statements, unsigned char response[20] ; UINT *rspSize; rspSize = (PUINT)malloc(sizeof(UINT)); result = ezLinkRcv(response,rspSize); it seems like problem with rspSize, rspSize doesn't match with response memory allocatin i.e. 20. I suggest you to try out giving hard-coded 20 instead of rspSize to know exact problem and then after implement generalized logic.