116 lines
4.0 KiB
C
116 lines
4.0 KiB
C
/*****************************************************************************
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* Copyright (c) 2019, Nations Technologies Inc.
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*
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* All rights reserved.
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* ****************************************************************************
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the disclaimer below.
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*
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* Nations' name may not be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* DISCLAIMED. IN NO EVENT SHALL NATIONS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ****************************************************************************/
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/**
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* @file drv_can.h
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* @author Nations
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* @version v1.0.0
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*
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* @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
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*/
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#ifndef __DRV_CAN_H__
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#define __DRV_CAN_H__
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#include <rtdevice.h>
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#include <rtthread.h>
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#include "n32g45x_can.h"
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#define CAN_BAUDRATE_1M ((uint32_t)1000)
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#define CAN_BAUDRATE_500K ((uint32_t)500)
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#define CAN_BAUDRATE_250K ((uint32_t)250)
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#define CAN_BAUDRATE_125K ((uint32_t)125)
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#define CAN_BAUDRATE_100K ((uint32_t)100)
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#define CAN_BAUDRATE_50K ((uint32_t)50)
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#define CAN_BAUDRATE_20K ((uint32_t)20)
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#define CAN_BAUDRATE_10K ((uint32_t)10)
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#define CAN_BTR_CALCULATE ((uint32_t)6000)
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#define CAN_TX_MAILBOX0 (0x00000001U) /*!< Tx Mailbox 0 */
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#define CAN_TX_MAILBOX1 (0x00000002U) /*!< Tx Mailbox 1 */
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#define CAN_TX_MAILBOX2 (0x00000004U) /*!< Tx Mailbox 2 */
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#define CAN_FILTERNUM0 ((uint8_t)0)
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/* attention !!! baud calculation example: Tclk / ((ss + bs1 + bs2) * brp) 36 / ((1 + 8 + 3) * 3) = 1MHz*/
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/* Default config for serial_configure structure */
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#define RT_CAN_FILTER_CONFIG_DEFAULT \
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{ \
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BAUD_RATE_115200, /* 115200 bits/s */ \
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DATA_BITS_8, /* 8 databits */ \
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STOP_BITS_1, /* 1 stopbit */ \
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PARITY_NONE, /* No parity */ \
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HFC_CONTROL_NONE, /* No Hardwareflow control */ \
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TX_RX_MODE, /* Tx_Rx mode */ \
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RT_SERIAL_RB_BUFSZ, /* Buffer size */ \
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0 \
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}
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struct n32_baud_rate_tab
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{
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rt_uint32_t baud_rate;
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rt_uint32_t config_data;
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};
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/**
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* @brief CAN handle Structure definition
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*/
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typedef struct
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{
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CAN_Module *Instance; /*!< Register base address */
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CAN_InitType Init; /*!< CAN required parameters */
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CanTxMessage* pTxMsg; /*!< Pointer to transmit structure */
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CanRxMessage* pRxMsg; /*!< Pointer to reception structure for RX FIFO0 msg */
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CanRxMessage* pRx1Msg; /*!< Pointer to reception structure for RX FIFO1 msg */
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uint32_t State; /*!< CAN communication state */
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FlagStatus Lock; /*!< CAN locking object */
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uint32_t ErrorCode; /*!< CAN Error code */
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}CAN_HandleTypeDef;
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/* n32 can device */
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struct n32_can
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{
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char *name;
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CAN_HandleTypeDef CanHandle;
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CAN_FilterInitType FilterConfig;
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struct rt_can_device device; /* inherit from can device */
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};
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int rt_hw_can_init(void);
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#endif /* __DRV_CAN_H__ */
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