74 lines
3.0 KiB
C
74 lines
3.0 KiB
C
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/****************************************************************************
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* include/canutils/obd_frame.h
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*
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* Copyright (C) 2017 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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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_INCLUDE_CANUTILS_OBD_FRAME_H
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#define __APPS_INCLUDE_CANUTILS_OBD_FRAME_H 1
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Frame Type
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*
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* Bits 7-4 of CAN Data 0
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*
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*/
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#define OBD_FRAME_TYPE(x) (x & 0xf0) /* Mask bits 4-7 */
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#define OBD_SINGLE_FRAME (0 << 4) /* Single frame */
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#define OBD_FIRST_FRAME (1 << 4) /* First frame */
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#define OBD_CONSEC_FRAME (2 << 4) /* Consecutive frame */
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#define OBD_FLWCTRL_FRAME (3 << 4) /* Flow control frame */
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/* Single Frame fields */
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#define OBD_SF_DATA_LEN(x) (x & 0xf) /* Data Lenght of Single Frame */
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/* First Frame fields */
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#define OBD_FF_DATA_LEN_D0(x) ((x & 0xf) << 8) /* Data Lenght of First Frame D0 */
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#define OBD_FF_DATA_LEN_D1(x) (x & 0xff) /* Data Lenght of First Frame D1 */
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/* Consecutive Frame fields */
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#define OBD_CF_SEQ_NUM(x) (x & 0xf) /* Consecutive Sequence Number */
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/* Flow Control Frame fields */
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#define OBD_FC_FLOW_STATUS(x) (x & 0xf) /* Flow Control Status */
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#endif /* __APPS_INCLUDE_CANUTILS_OBD_FRAME_H */
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