rt-thread-official/bsp/stm32/libraries/HAL_Drivers/drv_can.h

/*
 * Copyright (c) 2006-2018, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-08-05     Xeon Xu      the first version
 * 2019-01-22     YLZ          port from stm324xx-HAL to bsp stm3210x-HAL
 * 2019-01-26     YLZ          redefine `struct stm32_drv_can` add member `Rx1Message`
 * 2019-02-19     YLZ          port to BSP [stm32]
 * 2019-06-17     YLZ          modify struct stm32_drv_can.
 */

#ifndef __DRV_CAN_H__
#define __DRV_CAN_H__

#ifdef __cplusplus
extern "C" {
#endif

#include <board.h>
#include <rtdevice.h>
#include <rtthread.h>

#define BS1SHIFT        16
#define BS2SHIFT        20
#define RRESCLSHIFT     0
#define SJWSHIFT        24
#define BS1MASK         ((0x0F) << BS1SHIFT )
#define BS2MASK         ((0x07) << BS2SHIFT )
#define RRESCLMASK      (0x3FF << RRESCLSHIFT )
#define SJWMASK         (0x3 << SJWSHIFT )

struct stm32_baud_rate_tab
{
    rt_uint32_t baud_rate;
    rt_uint32_t config_data;
};
#define BAUD_DATA(TYPE,NO)       ((can_baud_rate_tab[NO].config_data & TYPE##MASK))

/* stm32 can device */
struct stm32_can
{
    char *name;
    CAN_HandleTypeDef CanHandle;
    CAN_FilterTypeDef FilterConfig;
    struct rt_can_device device;     /* inherit from can device */
};

int rt_hw_can_init(void);

#ifdef __cplusplus
}
#endif

#endif /*__DRV_CAN_H__ */

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