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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup CANBus
*
* @brief Controller Area Network (CAN) Bus Implementation
*
*/
/*
* Copyright (C) 2022 Prashanth S <fishesprashanth@gmail.com>
*
* 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.
*
* 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.
*/
#ifndef _DEV_CAN_CAN_MSG_H
#define _DEV_CAN_CAN_MSG_H
/**
* @defgroup Controller Area Network (CAN) Driver
*
* @ingroup RTEMSDeviceDrivers
*
* @brief Controller Area Network (CAN) bus and device driver support.
*
* @{
*/
/**
* @defgroup CANBus CAN Bus Driver
*
* @ingroup CAN
*
* @{
*/
/**
* @brief CAN message size
*/
#define CAN_MSG_MAX_SIZE (8u)
/**
* @brief Number of CAN tx buffers
*/
#define CAN_TX_BUF_COUNT (10u)
/**
* @brief Number of CAN rx buffers
*/
#define CAN_RX_BUF_COUNT (2u)
#define CAN_MSGLEN(msg) (sizeof(struct can_msg) - (CAN_MSG_MAX_SIZE - msg->len))
/**
* @brief CAN message structure.
*/
struct can_msg {
/**
* @brief CAN message id.
*/
uint32_t id;
/**
* @brief CAN message timestamp.
*/
uint32_t timestamp;
/**
* @brief CAN message flags RTR | BRS | EXT.
*/
uint16_t flags;
/**
* @brief CAN message length.
*/
uint16_t len;
/**
* @brief CAN message.
*/
uint8_t data[CAN_MSG_MAX_SIZE];
};
/** @} */ /* end of CAN message */
/** @} */
#endif /* _DEV_CAN_CAN_MSG_H */
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