132 lines
5.1 KiB
C
132 lines
5.1 KiB
C
/****************************************************************************
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* examples/examples/can/can.h
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#ifndef __APPS_EXAMPLES_CAN_CAN_H
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#define __APPS_EXAMPLES_CAN_CAN_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* This test depends on these specific CAN configurations settings (your
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* specific CAN settings might require additional settings).
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*
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* CONFIG_CAN - Enables CAN support.
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* CONFIG_CAN_LOOPBACK - A CAN driver may or may not support a loopback
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* mode for testing. The STM32 CAN driver does support loopback mode.
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*
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* Specific configuration options for this example include:
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*
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* CONFIG_NSH_BUILTIN_APPS - Build the CAN test as an NSH built-in function.
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* Default: Built as a standalone problem
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* CONFIG_CAN_LOOPBACK
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* CONFIG_EXAMPLES_CAN_DEVPATH - The path to the CAN device. Default: /dev/can0
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* CONFIG_EXAMPLES_CAN_NMSGS - If CONFIG_NSH_BUILTIN_APPS
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* is defined, then the number of loops is provided on the command line
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* and this value is ignored. Otherwise, this number of CAN message is
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* collected and the program terminates. Default: If built as an NSH
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* built-in, the default is 32. Otherwise messages are sent and received
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* indefinitely.
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* CONFIG_EXAMPLES_CAN_READONLY - Only receive messages
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* CONFIG_EXAMPLES_CAN_WRITEONLY - Only send messages
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*/
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#ifndef CONFIG_CAN
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# error "CAN device support is not enabled (CONFIG_CAN)"
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#endif
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#ifndef CONFIG_CAN_LOOPBACK
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# warning "CAN loopback is not enabled (CONFIG_CAN_LOOPBACK)"
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#endif
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#ifndef CONFIG_EXAMPLES_CAN_DEVPATH
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# define CONFIG_EXAMPLES_CAN_DEVPATH "/dev/can0"
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#endif
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#if defined(CONFIG_NSH_BUILTIN_APPS) && !defined(CONFIG_EXAMPLES_CAN_NMSGS)
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# define CONFIG_EXAMPLES_CAN_NMSGS 32
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#endif
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/* Debug ********************************************************************/
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#ifdef CONFIG_CPP_HAVE_VARARGS
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# ifdef CONFIG_DEBUG
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# define message(...) lib_rawprintf(__VA_ARGS__)
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# define msgflush()
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# else
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# define message(...) printf(__VA_ARGS__)
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# define msgflush() fflush(stdout)
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# endif
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#else
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# ifdef CONFIG_DEBUG
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# define message lib_rawprintf
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# define msgflush()
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# else
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# define message printf
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# define msgflush() fflush(stdout)
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# endif
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#endif
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/****************************************************************************
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* Public Variables
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: can_devinit()
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*
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* Description:
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* Perform architecuture-specific initialization of the CAN hardware. This
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* interface must be provided by all configurations using apps/examples/can
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*
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****************************************************************************/
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int can_devinit(void);
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#endif /* __APPS_EXAMPLES_CAN_CAN_H */
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