nodemcu-firmware/components/driver_can/include/CAN.h

70 lines
2.0 KiB
C

/**
* @section License
*
* The MIT License (MIT)
*
* Copyright (c) 2017, Thomas Barth, barth-dev.de
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __DRIVERS_CAN_H__
#define __DRIVERS_CAN_H__
#include <stdint.h>
#include "CAN_config.h"
/** \brief CAN Frame structure */
typedef struct {
uint8_t Extended;
uint32_t MsgID; /**< \brief Message ID */
uint32_t DLC; /**< \brief Length */
union {
uint8_t u8[8]; /**< \brief Payload byte access*/
uint32_t u32[2]; /**< \brief Payload u32 access*/
} data;
}CAN_frame_t;
/**
* \brief Initialize the CAN Module
*
* \return 0 CAN Module had been initialized
*/
int CAN_init(void);
/**
* \brief Send a can frame
*
* \param p_frame Pointer to the frame to be send, see #CAN_frame_t
* \return 0 Frame has been written to the module
*/
int CAN_write_frame(const CAN_frame_t* p_frame);
/**
* \brief Stops the CAN Module
*
* \return 0 CAN Module was stopped
*/
int CAN_stop(void);
#endif