Removed some warnings.
/*
This file is part of CanFestival, a library implementing CanOpen Stack.
Copyright (C): Edouard TISSERANT and Francis DUPIN
Copyright (C) Win32 Port Leonid Tochinski
See COPYING file for copyrights details.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
CAN driver interface.
*/
#include <windows.h>
extern "C"
{
#define DLL_CALL(funcname) (*_##funcname)
#define FCT_PTR_INIT =NULL
#include "canfestival.h"
#include "timer.h"
#include "timers_driver.h"
};
typedef UNS8 (*CANRECEIVE_DRIVER_PROC)(void* inst, Message *m);
typedef UNS8 (*CANSEND_DRIVER_PROC)(void* inst, const Message *m);
typedef void* (*CANOPEN_DRIVER_PROC)(s_BOARD *board);
typedef int (*CANCLOSE_DRIVER_PROC)(void* inst);
class driver_procs
{
public:
driver_procs();
~driver_procs();
HMODULE load_canfestival_driver(LPCTSTR driver_name);
bool can_driver_valid() const;
public:
// can driver
CANRECEIVE_DRIVER_PROC m_canReceive;
CANSEND_DRIVER_PROC m_canSend;
CANOPEN_DRIVER_PROC m_canOpen;
CANCLOSE_DRIVER_PROC m_canClose;
// driver module habndle
HMODULE m_driver_handle;
};
driver_procs::driver_procs() : m_canReceive(0),
m_canSend(0),
m_canOpen(0),
m_canClose(0),
m_driver_handle(0)
{}
driver_procs::~driver_procs()
{
if (m_driver_handle)
::FreeLibrary(m_driver_handle);
}
bool driver_procs::can_driver_valid() const
{
return ((m_canReceive != NULL) &&
(m_canSend != NULL) &&
(m_canOpen != NULL) &&
(m_canClose != NULL));
}
// GetProcAddress doesn't have an UNICODE version for NT
#ifdef UNDER_CE
#define myTEXT(str) TEXT(str)
#else
#define myTEXT(str) str
#endif
HMODULE driver_procs::load_canfestival_driver(LPCTSTR driver_name)
{
//LPCTSTR driver1 = "C:\\msys\\1.0\\home\\Ontaide\\can\\CanFestival-3\\drivers\\can_peak_win32\\cygcan_peak_win32.dll";
//LPCTSTR driver2 = "C:\\msys\\1.0\\home\\Ontaide\\can\\CanFestival-3\\drivers\\can_peak_win32\\cygcan_peak_win32.dll";
//printf("can_driver_valid=%d\n",can_driver_valid());
if (can_driver_valid())
return m_driver_handle;
printf("driver_name=%s\n",driver_name);
m_driver_handle = ::LoadLibrary(driver_name);
//printf("m_driver_handle=%d\n",m_driver_handle);
//printf("testerror =%s\n",GetLastError());
if (m_driver_handle == NULL)
return NULL;
m_canReceive = (CANRECEIVE_DRIVER_PROC)::GetProcAddress(m_driver_handle, myTEXT("canReceive_driver"));
m_canSend = (CANSEND_DRIVER_PROC)::GetProcAddress(m_driver_handle, myTEXT("canSend_driver"));
m_canOpen = (CANOPEN_DRIVER_PROC)::GetProcAddress(m_driver_handle, myTEXT("canOpen_driver"));
m_canClose = (CANCLOSE_DRIVER_PROC)::GetProcAddress(m_driver_handle, myTEXT("canClose_driver"));
return can_driver_valid()?m_driver_handle:NULL;
}
struct driver_data
{
CO_Data * d;
HANDLE receive_thread;
void* inst;
volatile bool continue_receive_thread;
};
driver_procs s_driver_procs;
LIB_HANDLE LoadCanDriver(const char* driver_name)
{
return s_driver_procs.load_canfestival_driver((LPCTSTR)driver_name);
}
UNS8 canReceive(CAN_PORT fd0, Message *m)
{
if (fd0 != NULL && s_driver_procs.m_canReceive != NULL)
{
driver_data* data = (driver_data*)fd0;
return (*s_driver_procs.m_canReceive)(data->inst, m);
}
return 1;
}
void* canReceiveLoop(CAN_PORT fd0)
{
driver_data* data = (driver_data*)fd0;
Message m;
while (data->continue_receive_thread)
{
if (!canReceive(fd0, &m))
{
EnterMutex();
canDispatch(data->d, &m);
LeaveMutex();
}
else
{
break;
::Sleep(1);
}
}
return 0;
}
/***************************************************************************/
UNS8 canSend(CAN_PORT fd0, Message *m)
{
if (fd0 != NULL && s_driver_procs.m_canSend != NULL)
{
UNS8 res;
driver_data* data = (driver_data*)fd0;
res = (*s_driver_procs.m_canSend)(data->inst, m);
if (res)
return 1; // OK
}
return 0; // NOT OK
}
/***************************************************************************/
CAN_HANDLE canOpen(s_BOARD *board, CO_Data * d)
{
if (board != NULL && s_driver_procs.m_canOpen != NULL)
{
void* inst = (*s_driver_procs.m_canOpen)(board);
if (inst != NULL)
{
driver_data* data = new driver_data;
data->d = d;
data->inst = inst;
data->continue_receive_thread = true;
CreateReceiveTask(data, &data->receive_thread, (void*)&canReceiveLoop);
EnterMutex();
d->canHandle = data;
LeaveMutex();
return data;
}
}
return NULL;
}
/***************************************************************************/
int canClose(CO_Data * d)
{
if (s_driver_procs.m_canClose != NULL)
{
driver_data* data;
EnterMutex();
if(d->canHandle != NULL){
data = (driver_data*)d->canHandle;
d->canHandle = NULL;
data->continue_receive_thread = false;}
LeaveMutex();
(*s_driver_procs.m_canClose)(data->inst);
WaitReceiveTaskEnd(&data->receive_thread);
delete data;
return 0;
}
return 0;
}