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[sam] integrating Wilfredo CAN driver function and bringing sn65hvd234

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driver into CAN library
This commit is contained in:
Thibaut VIARD 2012-12-20 11:20:01 +01:00
parent fd16c125d5
commit 2c107798a2
4 changed files with 248 additions and 0 deletions
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157
hardware/arduino/sam/libraries/CAN/sn65hvd234.c Normal file
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@ -0,0 +1,157 @@
/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2010, 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.
* ----------------------------------------------------------------------------
*/
/**
* \file
*
* Implementation of the SN65HVD234 drivers.
*
*/
#include "board.h"
#include <string.h>
/**
* \brief Initialize SN65HVD234 component data
*
* \param pComponent pointer on SSN65HVD234_Data
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_Init( SSN65HVD234_Data* pComponent )
{
pComponent->pPIO_Rs=NULL ;
pComponent->dwPin_Rs=0u ;
pComponent->pPIO_EN=NULL ;
pComponent->dwPin_EN=0u ;
return 0u ;
}
/**
* \brief Initialize Rs pin of transceiver
*
* \param pComponent pointer on SSN65HVD234_Data
* \param pPIO_Rs pointer on PIOx base for transceiver Rs pin
* \param dwPin_Rs PIO pin index for transceiver Rs pin
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_SetRs( SSN65HVD234_Data* pComponent, Pio* pPIO_Rs, uint32_t dwPin_Rs )
{
pComponent->pPIO_Rs=pPIO_Rs ;
pComponent->dwPin_Rs=dwPin_Rs ;
PIO_SetOutput( pPIO_Rs, dwPin_Rs, PIO_PULLUP|PIO_OUTPUT_LOW ) ;
return 0u ;
}
/**
* \brief Initialize EN pin of transceiver
*
* \param pComponent pointer on SSN65HVD234_Data
* \param pPIO_EN pointer on PIOx base for transceiver EN pin
* \param dwPin_EN PIO pin index for transceiver EN pin
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_SetEN( SSN65HVD234_Data* pComponent, Pio* pPIO_EN, uint32_t dwPin_EN )
{
pComponent->pPIO_EN=pPIO_EN ;
pComponent->dwPin_EN=dwPin_EN ;
PIO_SetOutput( pPIO_EN, dwPin_EN, PIO_PULLUP|PIO_OUTPUT_LOW ) ;
return 0u ;
}
/**
* \brief Enable transceiver
*
* \param pComponent pointer on SSN65HVD234_Data
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_Enable( SSN65HVD234_Data* pComponent )
{
// Raise EN of SN65HVD234 to High Level (Vcc)
pComponent->pPIO_EN->PIO_SODR=pComponent->dwPin_EN ;
return 0u ;
}
/**
* \brief Disable transceiver
*
* \param pComponent pointer on SSN65HVD234_Data
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_Disable( SSN65HVD234_Data* pComponent )
{
// Lower EN of SN65HVD234 to Low Level (0.0v)
pComponent->pPIO_EN->PIO_CODR=pComponent->dwPin_EN ;
return 0u ;
}
/**
* \brief Turn component into lowpower mode
*
* \param pComponent pointer on SSN65HVD234_Data
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_EnableLowPower( SSN65HVD234_Data* pComponent )
{
// Raise Rs of SN65HVD234 to more than 0.75v
pComponent->pPIO_Rs->PIO_SODR=pComponent->dwPin_Rs ;
// Now, SN65HVD234 is only listening
return 0u ;
}
/**
* \brief Restore Normal mode by leaving lowpower mode
*
* \param pComponent pointer on SSN65HVD234_Data
*
* \return 0 if OK
*/
extern uint32_t SN65HVD234_DisableLowPower( SSN65HVD234_Data* pComponent )
{
// Lower Rs of SN65HVD234 to 0.0v < 0.33v
pComponent->pPIO_Rs->PIO_CODR=pComponent->dwPin_Rs ;
return 0u ;
}

72
hardware/arduino/sam/libraries/CAN/sn65hvd234.h Normal file
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@ -0,0 +1,72 @@
/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2010, 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.
* ----------------------------------------------------------------------------
*/
/**
* \file
*
* Include Defines & macros for the SN65HVD234.
*/
#ifndef _CAN_SN65HVD234_
#define _CAN_SN65HVD234_
#include "board.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct _SSN65HVD234_Data
{
/** PIO dedicated to Rs pin */
Pio* pPIO_Rs ;
/** Rs Pin on PIO */
uint32_t dwPin_Rs ;
/** PIO dedicated to EN pin */
Pio* pPIO_EN ;
/** EN Pin on PIO */
uint32_t dwPin_EN ;
} SSN65HVD234_Data ;
extern uint32_t SN65HVD234_Init( SSN65HVD234_Data* pComponent ) ;
extern uint32_t SN65HVD234_SetRs( SSN65HVD234_Data* pComponent, Pio* pPIO_Rs, uint32_t dwPin_Rs ) ;
extern uint32_t SN65HVD234_SetEN( SSN65HVD234_Data* pComponent, Pio* pPIO_EN, uint32_t dwPin_EN ) ;
extern uint32_t SN65HVD234_Enable( SSN65HVD234_Data* pComponent ) ;
extern uint32_t SN65HVD234_Disable( SSN65HVD234_Data* pComponent ) ;
extern uint32_t SN65HVD234_EnableLowPower( SSN65HVD234_Data* pComponent ) ;
extern uint32_t SN65HVD234_DisableLowPower( SSN65HVD234_Data* pComponent ) ;
#ifdef __cplusplus
}
#endif
#endif /* _CAN_SN65HVD234_ */

3
hardware/arduino/sam/system/libsam/include/can.h
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@ -153,6 +153,9 @@ uint32_t can_mailbox_write(Can *p_can, can_mb_conf_t *p_mailbox);
uint32_t can_mailbox_tx_remote_frame(Can *p_can, can_mb_conf_t *p_mailbox);
void can_reset_all_mailbox(Can *p_can);
// from wilfredo
void reset_mailbox_conf(can_mb_conf_t *p_mailbox);
/** @} */
/** @cond 0 */

16
hardware/arduino/sam/system/libsam/source/can.c
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@ -764,6 +764,22 @@ void can_reset_all_mailbox(Can *p_can)
}
}
// from wilfredo
void reset_mailbox_conf(can_mb_conf_t *p_mailbox)
{
p_mailbox->ul_mb_idx = 0;
p_mailbox->uc_obj_type = 0;
p_mailbox->uc_id_ver = 0;
p_mailbox->uc_length = 0;
p_mailbox->uc_tx_prio = 0;
p_mailbox->ul_status = 0;
p_mailbox->ul_id_msk = 0;
p_mailbox->ul_id = 0;
p_mailbox->ul_fid = 0;
p_mailbox->ul_datal = 0;
p_mailbox->ul_datah = 0;
}
#endif // SAM3XA_SERIES