Subversion Repositories openrisc

/* ----------------------------------------------------------------------------

 *         ATMEL Microcontroller Software Support

 * ----------------------------------------------------------------------------

 * Copyright (c) 2008, Atmel Corporation

 *

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * - Redistributions of source code must retain the above copyright notice,

 * this list of conditions and the disclaimer below.

 *

 * Atmel's name may not be used to endorse or promote products derived from

 * this software without specific prior written permission.

 *

 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE

 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,

 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,

 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 * ----------------------------------------------------------------------------

 */

#ifndef _CAN_H

#define _CAN_H

//------------------------------------------------------------------------------

//      Definitions

//------------------------------------------------------------------------------

#define AT91C_CAN_TIMEOUT         100000

#define AT91C_TEST_NOK                 0

#define AT91C_TEST_OK                  1

#define CAN_STATUS_SUCCESS             0

#define CAN_STATUS_LOCKED              1

#define CAN_STATUS_ABORTED             2

#define CAN_STATUS_RESET               3

#if defined (AT91C_BASE_CAN)

    #define AT91C_BASE_CAN0      AT91C_BASE_CAN

#endif

#if defined (AT91C_ID_CAN)

    #define AT91C_ID_CAN0        AT91C_ID_CAN

#endif

#if defined (AT91C_BASE_CAN_MB0)

    #define AT91C_BASE_CAN0_MB0  AT91C_BASE_CAN_MB0

    #define AT91C_BASE_CAN0_MB1  AT91C_BASE_CAN_MB1

    #define AT91C_BASE_CAN0_MB2  AT91C_BASE_CAN_MB2

    #define AT91C_BASE_CAN0_MB3  AT91C_BASE_CAN_MB3

    #define AT91C_BASE_CAN0_MB4  AT91C_BASE_CAN_MB4

    #define AT91C_BASE_CAN0_MB5  AT91C_BASE_CAN_MB5

    #define AT91C_BASE_CAN0_MB6  AT91C_BASE_CAN_MB6

    #define AT91C_BASE_CAN0_MB7  AT91C_BASE_CAN_MB7

#endif

#if defined (AT91C_BASE_CAN_MB8)

    #define AT91C_BASE_CAN0_MB8   AT91C_BASE_CAN_MB8

    #define AT91C_BASE_CAN0_MB9   AT91C_BASE_CAN_MB9

    #define AT91C_BASE_CAN0_MB10  AT91C_BASE_CAN_MB10

    #define AT91C_BASE_CAN0_MB11  AT91C_BASE_CAN_MB11

    #define AT91C_BASE_CAN0_MB12  AT91C_BASE_CAN_MB12

    #define AT91C_BASE_CAN0_MB13  AT91C_BASE_CAN_MB13

    #define AT91C_BASE_CAN0_MB14  AT91C_BASE_CAN_MB14

    #define AT91C_BASE_CAN0_MB15  AT91C_BASE_CAN_MB15

#endif

#define NUM_MAILBOX_MAX 16

//------------------------------------------------------------------------------

//         Types

//------------------------------------------------------------------------------

typedef struct

{

    volatile unsigned char state;

    volatile unsigned char can_number;

    volatile unsigned char mailbox_number;

    volatile unsigned char test_can;

    volatile unsigned int  mode_reg;

    volatile unsigned int  acceptance_mask_reg;

    volatile unsigned int  identifier;

    volatile unsigned int  data_low_reg;

    volatile unsigned int  data_high_reg;

    volatile unsigned int  control_reg;

    volatile unsigned int  mailbox_in_use;

    volatile int           size;

} CanTransfer;

//------------------------------------------------------------------------------

//         Exported functions

//------------------------------------------------------------------------------

extern unsigned char CAN_Init( unsigned int baudrate,

                               CanTransfer *canTransferRead,

                               CanTransfer *canTransferWrite );

extern void CAN_BasicTestSuite(void);

extern void CAN_disable( void );

extern void CAN_ResetAllMailbox( void );

extern void CAN_ResetTransfer( CanTransfer *pTransfer );

extern void CAN_InitMailboxRegisters( CanTransfer *pTransfer );

extern unsigned char CAN_IsInIdle( CanTransfer *pTransfer );

extern unsigned char CAN_Write( CanTransfer *pTransfer );

extern unsigned char CAN_Read( CanTransfer *pTransfer );

extern void CAN_BasicTestSuiteWithoutInterrupt( void );

extern unsigned char CAN_IsInIdle( CanTransfer *pTransfer );

#endif // _CAN_H