source: pacpussensors/trunk/CanGateway/driver/PeakCanDriverWin.cpp@ 81

/********************************************************************
//  created:    2011/02/21 - 10:46
//  filename:   PeakCanDriverWin.cpp
//
//  author:     Sergio Rodriguez
//
//  version:    $Id: PeakCanDriverWin.cpp srodrigu $
//
//  purpose:    Implementation of the PeakCanDriverWin class
//
*********************************************************************/


#include "PeakCanDriverWin.h"
#include <stdio.h>
#include <cstring>
#include <cstdlib>
#include <iostream>

#define DEFAULT_NODE PCAN_USBBUS1
#define WAIT_RECEIVING_FRAME_TIMEOUT 1000

/**
* Constructor which enables to initialize the different attributes of the class with default values.
*/
PeakCanDriverWin::PeakCanDriverWin (void)
{
        printf("Notice : PEAK CAN Driver used\n");
        //szDevNode_ = DEFAULT_NODE;

        this->canDeviceHandle_ = DEFAULT_NODE;
        mode_ = ReadOnly;
}

/**
* Constructor which enables to initialize the different attributes of the class with default values.
*/
PeakCanDriverWin::PeakCanDriverWin (int channel)
{
        printf("Notice : PEAK CAN Driver used\n");
        //szDevNode_ = DEFAULT_NODE;
        
        //ATTENCION : Its necessary to create something more generalized
        this->canDeviceHandle_ = DEFAULT_NODE;
        this->canBaudrate_ = PCAN_BAUD_500K;
        mode_ = ReadOnly;
}

/**
* Constructor which enables to initialize the different attributes of the class with default values.
*/
PeakCanDriverWin::PeakCanDriverWin (int channel, unsigned int bitRate)
{
        printf("Notice : PEAK CAN Driver used\n");
        //szDevNode_ = DEFAULT_NODE;

        //ATTENCION : Its necessary to create something more generalized
        this->canDeviceHandle_ = DEFAULT_NODE;
        this->canBaudrate_ = PCAN_BAUD_500K;
        mode_ = ReadOnly;
}

/**
* Constructor which enables to initialize the different attributes of the class with default values.
*/
PeakCanDriverWin::PeakCanDriverWin(const char* port, const char* mode)
{
        /*szDevNode_ =(char*) malloc(14*sizeof(char));
        strcpy(szDevNode_,DEFAULT_NODE);*/

        //ATTENCION : Its necessary to create something more generalized
        this->canDeviceHandle_ = DEFAULT_NODE;
        this->canBaudrate_ = PCAN_BAUD_500K;

        printf("Notice : PEAK CAN Driver used\n");
        //strcpy(szDevNode_, port);
        printf("Driver to be connected at port: %s",szDevNode_);

        if (!strcmp(mode,"ReadOnly")){
                mode_ = ReadOnly; 
                printf(" in ReadOnly mode\n");
        }
        else if (!strcmp(mode,"WriteOnly")){
                mode_ = WriteOnly;
                printf(" in WriteOnly mode\n");
        }
        else if (!strcmp(mode,"ReadWrite")){
                mode_ = ReadWrite;
                printf(" in ReadWrite dual mode\n");
        }
        else{
                mode_= ReadOnly;
                printf(" in ReadOnly mode since mode was not identified.\n");
        } 
}

/**
* Destructor which clean up the different attributs of the class.
*/
PeakCanDriverWin::~PeakCanDriverWin (void)
{

}

/**
* Member used to initialise the configuration of the CAN Card.
* @see cleanUpPort (void)
* @return a Pstatus variable which contain the error code of the function. On success, it return PSUCCESS. On failure, it return Pstatus error code.
*/
short PeakCanDriverWin::initPort (void)
{
        // Connects a selected PCAN-Basic channel
        //
        TPCANStatus stsResult = CAN_Initialize( this->canDeviceHandle_ /* TPCANHandle Channel */, 
                                                                                        this->canBaudrate_ /* TPCANBaudrate Btr0Btr1 */);
        
        /*
        switch(mode_)
        {
        case ReadOnly:
                //canDeviceHandle_ = LINUX_CAN_Open(szDevNode_, O_RDONLY);
                break;
        case WriteOnly:
                canDeviceHandle_ = LINUX_CAN_Open(szDevNode_, O_WRONLY);
                break;
        case ReadWrite:
                canDeviceHandle_ = LINUX_CAN_Open(szDevNode_, O_RDWR);
                break;
        default:
                printf("Error on CAN port operation mode selection.\n");
                break;
        }
        */

        return (stsResult != PCAN_ERROR_OK)?1:PSUCCESS;
}

/**
* Member used to clean up the configuration of the CAN Card.
* @see initPort (void)
* @return a Pstatus variable which contain the error code of the function. On success, it return PSUCCESS. On failure, it return Pstatus error code.
*/
short PeakCanDriverWin::cleanUpPort (void)
{
        if(canDeviceHandle_)
        {
                printf("Closing CAN Driver..");
                TPCANStatus stsResult = CAN_Uninitialize(canDeviceHandle_);
                return (stsResult != PCAN_ERROR_OK)?1:PSUCCESS;
        }
        printf("CAN Driver finished.\n");
        return 1;
}


/**
* Member which permit to send a frame on the CAN bus and test if the frame is well acknowledged.
* @param flags a character which contain the flags of the sent frame.
* @param dlc a character which defined the number of characters of the sent frame.
* @param data a table of characters with the data of the sent frame.
* @see receiveFrame (unsigned char * flags, unsigned char * dlc, unsigned char ** data)
* @return a Pstatus variable which contain the error code of the function. On success, it return PSUCCESS. On failure, it return Pstatus error code.
*/
short PeakCanDriverWin::sendFrame (struct CanFrame frame)
{
        TPCANMsg msg;
        msg.MSGTYPE  = 0; //normal message
        //msg.MSGTYPE |= MSGTYPE_EXTENDED; //extended ?
        msg.ID = frame.id;
        msg.LEN = frame.dlc;
        memcpy(msg.DATA, frame.data, frame.dlc);
        if(CAN_Write(canDeviceHandle_, &msg)) {
                perror("application: CAN_Write()");
                return errno;
        }
        return PSUCCESS;
}


/**
* Member which permit to receive of a frame on the CAN bus.
* @param flags a character pointer which contain the flags of the received frame.
* @param dlc a character pointer which defined the number of characters of the received frame.
* @param data a pointer of table of characters with the data of the received frame.
* @see sendFrame (unsigned char flags, unsigned char dlc, unsigned char * data)
* @return a Pstatus variable which contain the error code of the function. On success, it return PSUCCESS. On failure, it return Pstatus error code.
*/
short PeakCanDriverWin::receiveFrame (struct CanFrame &frame)
{
        TPCANMsg message;
        TPCANStatus status;

        //if ((errno = CAN_Read(canDeviceHandle_, &message)))
        if ((errno = CAN_Read(canDeviceHandle_, &message, NULL)))
        {
                //Timeout:
                //perror("application: CAN_Read()");
                return errno;
        }
        else
        {
                //print_message(&message.Msg);
                // check if a CAN status is pending
                if (message.MSGTYPE & PCAN_MESSAGE_STATUS)
                {
                        status = CAN_GetStatus(canDeviceHandle_);
                        /*if ((int)status < 0)
                        {
                                errno = nGetLastError();
                                perror("application: CAN_Status()");
                                return errno;
                        }
                        else*/
                                printf("application: pending CAN status 0x%04x read.\n", status);
                }
        }

        /* Return the flags field, dlc field and data field of the sent frame */
        //frame.flags = pEvent->tagData.msg.flags;
        frame.dlc = message.LEN; //ok
        frame.id =  message.ID;

        if( ( frame.dlc > 8 ) || ( frame.dlc < 0 ))
                frame.dlc = 8;
        memcpy(frame.data,message.DATA, frame.dlc);

        return PSUCCESS;
}


/**
* Member which wait the reception of a frame on the CAN bus.
* @see sendFrame (unsigned char flags, unsigned char dlc, unsigned char * data)
* @see receiveFrame (unsigned char * flags, unsigned char * dlc, unsigned char ** data)
*/
void PeakCanDriverWin::waitReceivingFrame(void)
{

}
// print out the contents of a CAN message
void PeakCanDriverWin::print_message(TPCANMsg *m)
{
        int i;

        // print RTR, 11 or 29, CAN-Id and datalength
        printf("message: %c %c 0x%08x %1d  ",
                (m->MSGTYPE & PCAN_MESSAGE_RTR)      ? 'r' : 'm',
                (m->MSGTYPE & PCAN_MESSAGE_EXTENDED) ? 'e' : 's',
                m->ID,
                m->LEN);

        // don't print any telegram contents for remote frames
        if (!(m->MSGTYPE & PCAN_MESSAGE_RTR))
                for (i = 0; i < m->LEN; i++)
                        printf("0x%02x ", m->DATA[i]);

        printf("\n");
}