15c6c91b8a
error: Path relative to repository other than nuttx must begin with the root directory Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/****************************************************************************
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* apps/include/canutils/obd.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __APPS_INCLUDE_CANUTILS_OBD_H
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#define __APPS_INCLUDE_CANUTILS_OBD_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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#include <sys/ioctl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <nuttx/can/can.h>
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* CAN Modes */
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enum
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{
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CAN_STD = 0,
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CAN_EXT,
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};
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/* OBD-II structure */
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struct obd_dev_s
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{
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struct can_msg_s can_txmsg; /* TX Message */
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struct can_msg_s can_rxmsg; /* RX Message */
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struct canioc_bittiming_s can_bt; /* Current bitrate */
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uint8_t can_mode; /* Current mode (Standard or Extended) */
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int can_fd; /* File Descriptor of CAN Device */
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#ifdef CONFIG_MULTIFRAME_SUPPORT
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uint8_t data[4096]; /* Up to 4096 bytes */
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#else
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uint8_t data[8]; /* Single Frame = 8 bytes */
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#endif
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};
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/****************************************************************************
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* Name: obd_init
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*
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* Description:
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* Initialize the OBD-II with initial baudrate
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*
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* Returns a obd_dev_s with initial values or NULL if error.
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*
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****************************************************************************/
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FAR struct obd_dev_s *obd_init(FAR char *devfile, int baudate, int mode);
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/****************************************************************************
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* Name: obd_sent_request
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*
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* Description:
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* Send a "Request Message" to ECUs with requested PID.
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*
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* It will return an error case the message fails to be sent.
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*
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****************************************************************************/
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int obd_send_request(FAR struct obd_dev_s *dev, uint8_t opmode, uint8_t pid);
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/****************************************************************************
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* Name: obd_wait_response
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*
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* Description:
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* Wait for a message from ECUs with requested PID that was sent using
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* obd_send_request().
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*
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* It will return an error case it doesn't receive the msg after the elapsed
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* "timeout" time.
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*
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****************************************************************************/
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int obd_wait_response(FAR struct obd_dev_s *dev, uint8_t opmode, uint8_t pid,
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int timeout);
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/****************************************************************************
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* Name: obd_decode_pid
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*
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* Description:
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* Decode the value returned for a determined PID.
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*
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* It will return the decode PID as string or NULL if error.
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*
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****************************************************************************/
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FAR char *obd_decode_pid(FAR struct obd_dev_s *dev, uint8_t pid);
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#endif /*__APPS_INCLUDE_CANUTILS_OBD_H */
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