114 lines
4.8 KiB
C
114 lines
4.8 KiB
C
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/* ----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support
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* ----------------------------------------------------------------------------
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* Copyright (c) 2008, Atmel Corporation
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Atmel's name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ----------------------------------------------------------------------------
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*/
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#ifndef _CAN_H
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#define _CAN_H
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//------------------------------------------------------------------------------
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// Definitions
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//------------------------------------------------------------------------------
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#define AT91C_CAN_TIMEOUT 100000
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#define AT91C_TEST_NOK 0
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#define AT91C_TEST_OK 1
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#define CAN_STATUS_SUCCESS 0
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#define CAN_STATUS_LOCKED 1
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#define CAN_STATUS_ABORTED 2
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#define CAN_STATUS_RESET 3
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#if defined (AT91C_BASE_CAN)
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#define AT91C_BASE_CAN0 AT91C_BASE_CAN
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#endif
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#if defined (AT91C_ID_CAN)
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#define AT91C_ID_CAN0 AT91C_ID_CAN
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#endif
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#if defined (AT91C_BASE_CAN_MB0)
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#define AT91C_BASE_CAN0_MB0 AT91C_BASE_CAN_MB0
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#define AT91C_BASE_CAN0_MB1 AT91C_BASE_CAN_MB1
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#define AT91C_BASE_CAN0_MB2 AT91C_BASE_CAN_MB2
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#define AT91C_BASE_CAN0_MB3 AT91C_BASE_CAN_MB3
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#define AT91C_BASE_CAN0_MB4 AT91C_BASE_CAN_MB4
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#define AT91C_BASE_CAN0_MB5 AT91C_BASE_CAN_MB5
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#define AT91C_BASE_CAN0_MB6 AT91C_BASE_CAN_MB6
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#define AT91C_BASE_CAN0_MB7 AT91C_BASE_CAN_MB7
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#endif
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#if defined (AT91C_BASE_CAN_MB8)
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#define AT91C_BASE_CAN0_MB8 AT91C_BASE_CAN_MB8
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#define AT91C_BASE_CAN0_MB9 AT91C_BASE_CAN_MB9
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#define AT91C_BASE_CAN0_MB10 AT91C_BASE_CAN_MB10
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#define AT91C_BASE_CAN0_MB11 AT91C_BASE_CAN_MB11
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#define AT91C_BASE_CAN0_MB12 AT91C_BASE_CAN_MB12
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#define AT91C_BASE_CAN0_MB13 AT91C_BASE_CAN_MB13
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#define AT91C_BASE_CAN0_MB14 AT91C_BASE_CAN_MB14
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#define AT91C_BASE_CAN0_MB15 AT91C_BASE_CAN_MB15
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#endif
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#define NUM_MAILBOX_MAX 16
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//------------------------------------------------------------------------------
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// Types
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//------------------------------------------------------------------------------
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typedef struct
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{
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volatile unsigned char state;
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volatile unsigned char can_number;
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volatile unsigned char mailbox_number;
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volatile unsigned char test_can;
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volatile unsigned int mode_reg;
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volatile unsigned int acceptance_mask_reg;
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volatile unsigned int identifier;
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volatile unsigned int data_low_reg;
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volatile unsigned int data_high_reg;
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volatile unsigned int control_reg;
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volatile unsigned int mailbox_in_use;
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volatile int size;
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} CanTransfer;
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//------------------------------------------------------------------------------
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// Exported functions
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//------------------------------------------------------------------------------
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extern unsigned char CAN_Init( unsigned int baudrate,
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CanTransfer *canTransferRead,
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CanTransfer *canTransferWrite );
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extern void CAN_BasicTestSuite(void);
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extern void CAN_disable( void );
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extern void CAN_ResetAllMailbox( void );
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extern void CAN_ResetTransfer( CanTransfer *pTransfer );
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extern void CAN_InitMailboxRegisters( CanTransfer *pTransfer );
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extern unsigned char CAN_IsInIdle( CanTransfer *pTransfer );
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extern unsigned char CAN_Write( CanTransfer *pTransfer );
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extern unsigned char CAN_Read( CanTransfer *pTransfer );
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extern void CAN_BasicTestSuiteWithoutInterrupt( void );
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extern unsigned char CAN_IsInIdle( CanTransfer *pTransfer );
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#endif // _CAN_H
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