rt-thread/bsp/hc32/ev_hc32f4a0_lqfp176/board/config/can_config.h

126 lines
4.7 KiB
C

/*
* Copyright (c) 2006-2022, RT-Thread Development Team
* Copyright (c) 2022, Xiaohua Semiconductor Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-04-28 CDT first version
*/
#ifndef __CAN_CONFIG_H__
#define __CAN_CONFIG_H__
#include <rtthread.h>
#include "irq_config.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifdef BSP_USING_CAN1
#ifndef CAN1_INIT_PARAMS
#define CAN1_INIT_PARAMS \
{ \
.name = "can1", \
}
#endif /* CAN1_INIT_PARAMS */
#endif /* BSP_USING_CAN1 */
#ifdef BSP_USING_CAN2
#ifndef CAN2_INIT_PARAMS
#define CAN2_INIT_PARAMS \
{ \
.name = "can2", \
}
#endif /* CAN2_INIT_PARAMS */
#endif /* BSP_USING_CAN2 */
/* Bit time config
Restrictions: u32TimeSeg1 >= u32TimeSeg2 + 1, u32TimeSeg2 >= u32SJW.
Baudrate = CANClock/(u32Prescaler*(u32TimeSeg1 + u32TimeSeg2))
TQ = u32Prescaler / CANClock.
Bit time = (u32TimeSeg2 + u32TimeSeg2) x TQ.
The following bit time configures are based on CAN Clock 40M
*/
#define CAN_BIT_TIME_CONFIG_1M_BAUD \
{ \
.u32Prescaler = 2, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_800K_BAUD \
{ \
.u32Prescaler = 2, \
.u32TimeSeg1 = 20, \
.u32TimeSeg2 = 5, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_500K_BAUD \
{ \
.u32Prescaler = 4, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_250K_BAUD \
{ \
.u32Prescaler = 8, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_125K_BAUD \
{ \
.u32Prescaler = 16, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_100K_BAUD \
{ \
.u32Prescaler = 20, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_50K_BAUD \
{ \
.u32Prescaler = 40, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_20K_BAUD \
{ \
.u32Prescaler = 100, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#define CAN_BIT_TIME_CONFIG_10K_BAUD \
{ \
.u32Prescaler = 200, \
.u32TimeSeg1 = 16, \
.u32TimeSeg2 = 4, \
.u32SJW = 4 \
}
#ifdef __cplusplus
}
#endif
#endif /* __CAN_CONFIG_H__ */