nuttx/boards/arm/sama5/sama5d3-xplained/src/sam_can.c

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/************************************************************************************
Merged in alinjerpelea/nuttx (pull request #963) Move boards to boards folder * boards: rename configs folder to boards This is the proposed layout after the change: boards: - folder containing board folders <board>: - name of each board drivers: - extra drivers specific for platform include: - header files for the boars scripts: - extra scripts specific for platform src: - board specific code tools: - extra tools specific for platform <config>: - board specific configuration(s) Note: <xxx> names are dependent on platform This is a logical change to aim to the arch layout but this is a huge change it should be done in several steps to lower the risk. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * Kconfig: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * Makefile: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * Makefile.*: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * Make.defs: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * .sh: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * .mk: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * .c & .h: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> * .bat: replace configs with boards The change is needed after the path change Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com> Approved-by: Gregory Nutt <gnutt@nuttx.org>
2019-08-05 14:04:14 +02:00
* boards/sama5d3-xplained/src/sam_can.c
*
* Copyright (C) 2014, 2016 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/can/can.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "sam_can.h"
#include "sama5d3-xplained.h"
#ifdef CONFIG_CAN
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* Configuration ********************************************************************/
#if defined(CONFIG_SAMA5_CAN0) && defined(CONFIG_SAMA5_CAN1)
# warning "Both CAN0 and CAN1 are enabled. Assuming only CAN0."
# undef CONFIG_SAMA5_CAN1
#endif
#ifdef CONFIG_SAMA5_CAN0
# define CAN_PORT 0
#else
# define CAN_PORT 1
#endif
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: sam_can_setup
*
* Description:
* Initialize CAN and register the CAN device
*
************************************************************************************/
int sam_can_setup(void)
{
#if defined(CONFIG_SAMA5_CAN0) || defined(CONFIG_SAMA5_CAN1)
struct can_dev_s *can;
int ret;
/* Call stm32_caninitialize() to get an instance of the CAN interface */
can = sam_caninitialize(CAN_PORT);
if (can == NULL)
{
canerr("ERROR: Failed to get CAN interface\n");
return -ENODEV;
}
/* Register the CAN driver at "/dev/can0" */
ret = can_register("/dev/can0", can);
if (ret < 0)
{
canerr("ERROR: can_register failed: %d\n", ret);
return ret;
}
return OK;
#else
return -ENODEV;
#endif
}
#endif /* CONFIG_CAN */