000
24.08.2008, 11:44 Uhr
sojahulk
|
hallo,
ich versuche verzweifelt mit meinen rudimentären c++ fähigkeiten eine dll zu programmieren, mir eine function aus einer anderen dll mit einer callbackfucktion ausführt.
folgendes habe ich geschreieben:
| C++: |
#include "stdafx.h"
#include "types.h"
#include "antdefines.h"
#include "antmessage.h"
#include "ant_dll.h"
P_ANT_ARF ANT_AssignResponseFunction;
P_ANT_AEF ANT_AssignChannelEventFunction;
P_ANT_SHM ANT_SerialHaveMessage;
static HMODULE hANTdll;
static BOOL bLoaded = FALSE;
UCHAR ucChannel;
BOOL ANT_Load(void)
{
if (bLoaded)
return TRUE;
hANTdll = LoadLibraryA("ANT_DLL.dll");
if (hANTdll == NULL)
return FALSE;
ANT_AssignResponseFunction = (P_ANT_ARF) GetProcAddress(hANTdll, "ANT_AssignResponseFunction");
ANT_AssignChannelEventFunction = (P_ANT_AEF) GetProcAddress(hANTdll, "ANT_AssignChannelEventFunction");
ANT_SerialHaveMessage = (P_ANT_SHM) GetProcAddress(hANTdll, "ANT_SerialHaveMessage");
if (ANT_AssignResponseFunction == NULL)
return FALSE;
if (ANT_AssignChannelEventFunction == NULL)
return FALSE;
if (ANT_SerialHaveMessage == NULL)
return FALSE;
bLoaded = TRUE;
return TRUE;
}
void ANT_UnLoad(void)
{
if (hANTdll != NULL)
{
FreeLibrary(hANTdll);
}
bLoaded = FALSE;
}
UCHAR* SerialRawData(UCHAR ucChannel, UCHAR *pucRxBuffer)
{
ANT_AssignResponseFunction( (RESPONSE_FUNC)ANT_SerialHaveMessage,aucResponseBuf );
ANT_AssignChannelEventFunction(ucChannel, (CHANNEL_EVENT_FUNC)ANT_SerialHaveMessage, pucRxBuffer );
return pucRxBuffer;
}
|
als bsp: die event funkiton ist wie folgt aufgebaut:
| C++: |
//in der .h definierter functionpointer
typedef BOOL (*CHANNEL_EVENT_FUNC)(UCHAR ucANTChannel, UCHAR ucEvent);
//
void ANT_AssignChannelEventFunction(UCHAR ucLink, CHANNEL_EVENT_FUNC pfLinkEvent, UCHAR *pucRxBuffer)
{
sLink[ucLink].pfLinkEvent = pfLinkEvent;
sLink[ucLink].pucRxBuffer = pucRxBuffer;
}
|
und der linkevent wir hier behandelt:
| C++: |
void ANT_SerialHaveMessage(void)
{
UCHAR aucData[MESG_RSSI_DATA_SIZE];
UCHAR ucSize;
UCHAR ucID;
UCHAR ucANTChannel;
//If no response function has been assigned, ignore the message and unlock
//the receive buffer
if (pfResponseFunc == NULL)
{
Serial_ClearState(SERIAL_STATE_RX_BUFFER_LOCK); // unlock RX buffer
return;
}
ucSize = Serial_GetMesg(&ucID, &aucData[0]);
ucANTChannel = aucData[MESG_CHANNEL_OFFSET] & CHANNEL_NUMBER_MASK;
//Process the message to determine whether it is a response event or one
//of the channel events and call the appropriate event function.
switch (ucID)
{
case MESG_RESPONSE_EVENT_ID:
if (aucData[MESG_EVENT_ID_OFFSET] != MESG_EVENT_ID) // this is a response
{
if (pucResponseBuffer)
{
memcpy(pucResponseBuffer, &aucData[0], MESG_RESPONSE_EVENT_SIZE);
pfResponseFunc(ucANTChannel, MESG_RESPONSE_EVENT_ID);
}
}
else // this is an event
{
// If we are in auto transfer mode, stop sending packets
if ((aucData[MESG_EVENT_CODE_OFFSET] == EVENT_TRANSFER_TX_FAILED) && (ucAutoTransferChannel == ucANTChannel))
usNumDataPackets = 0;
if (sLink[ucANTChannel].pfLinkEvent == NULL)
break;
memcpy(sLink[ucANTChannel].pucRxBuffer, &aucData[0], ucSize);
sLink[ucANTChannel].pfLinkEvent(ucANTChannel, aucData[MESG_EVENT_CODE_OFFSET]); // pass through any events not handled here
}
break;
case MESG_BROADCAST_DATA_ID:
if (sLink[ucANTChannel].pfLinkEvent == NULL)
break;
//Call channel event function with Broadcast message code
memcpy(sLink[ucANTChannel].pucRxBuffer, &aucData[0], MESG_DATA_SIZE);
sLink[ucANTChannel].pfLinkEvent(ucANTChannel, EVENT_RX_BROADCAST); // process the event
break;
.
.
.
|
ich wäre sehr dankbar für hilfe, und auch bereit zu zahlen, wenn sich jemand dieser aufgabe annehmen möchte.
thanx
hulk |
