projekty/Source/example1/src/CAN.c

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/* $Id: CAN.c,v 1.00 2005/15/11 08:30:00 BorisK Exp $
*
* Copyright (C) 2005 ONTRACK s.r.o.
* 
*  This program is free software; you can redistribute it and/or
*  modify it under the terms of the GNU General Public License
*  as published by the Free Software Foundation; either version 2
*  of the License, or (at your option) any later version.
* 
*  This program 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 General Public License for more details.
* 
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
*  02111-1307, USA.
* 
*  Written by Boris Kralik <kralikbo@yahoo.com>, 2005.
*/
#include "CAN.h"
#include        "status.h"
void    CAN1_Init(void)
{
        PCB_PINSEL1     &=      0x7FFFF;
        PCB_PINSEL1     |=      (1 << 18);//Set pin P0.25 as RD1
        SCB_PCONP       |=      (1 << 13);
        CAN1_MOD        =       0x00000001;     //Set CAN controller into reset
        CAN1_BTR        =       0x001C001D;     //Set bit timing to 125k
        CAN1_IER        =       0x00000005;
        CAN1_MOD        =       0x00000000;     //Release CAN controller
        WD_Reset();
}

void    CAN2_Init()
{
        uint16_t        uiStatus=0;
        PCB_PINSEL1     &=      0xE7FFF;        
        PCB_PINSEL1     |=      ((1 << 16)|(1 << 14));//set pin P0.23 as RD2, P0.24 as TD2,
        SCB_PCONP       |=      (1 << 14);
        CAN2_MOD        =       0x00000001;     //Set CAN controller into reset
        CAN2_BTR        =       0x001C001D;     //Set bit timing to 125k
        CAN2_IER        =       0x00000005;
        CAN2_MOD        =       0x00000000;     //Release CAN controller
        WD_Reset();
}

void    CAN4_Init(void)
{
        PCB_PINSEL0     |=      ((1 << 24)|(1 << 25) | (1 << 26) | (1 << 27));  //Set P0.12 (RD4) and P0.13 (TD4) as CAN        
        SCB_PCONP       |=      (1 << 16);
        CAN4_MOD        =       0x00000001;     //Set CAN controller into reset
        CAN4_BTR        =       0x001C001D;     //Set bit timing to 125k
        CAN4_IER        =       0x00000005;
        CAN4_MOD        =       0x00000000;     //Release CAN controller
        WD_Reset();
}

uint16_t        CAN1_Off(uint16_t       uiStatus)
{       
        CAN1_MOD        |=      (1 << 0);
        SCB_PCONP       &=      0xCFFF;
        uiStatus &= 0xDF;
#if 0
        printf("\n\r\tuiStatus=0x%X");
#endif
        WD_Reset();
        return uiStatus;
}

uint16_t        CAN2_Off( uint16_t      uiStatus)
{
        CAN2_MOD        |=      (1 << 0);
        SCB_PCONP       &=      0xBFFF;
        uiStatus &= 0xBF;
#if 1
        printf("\n\r\tuiStatus=0x%X");
#endif
        WD_Reset();
        return uiStatus;
}

uint16_t        CAN4_Off(uint16_t uiStatus)
{
        CAN4_MOD        |=      (1 << 0);
        SCB_PCONP       &=      0x7FFF;
        uiStatus &= 0x7F;
#if 1
        printf("\n\r\tuiStatus=0x%X");
#endif
        WD_Reset();
        return uiStatus;
}
uint16_t CAN_Off(uint16_t       uiStatus)
{
        uiStatus        =       CAN1_Off(uiStatus);
        uiStatus        =       CAN2_Off(uiStatus);
        uiStatus        =       CAN4_Off(uiStatus);
#if 1
        printf("\n\r\tCAN_Off:uiStatus=0x%X");
#endif
        WD_Reset();
        return uiStatus;
}

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