/*
 * Copyright (c) 2006-2020, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2020-09-29     liuya       the first version
 */
#ifndef APPLICATIONS_VKLINK_H_
#define APPLICATIONS_VKLINK_H_

#ifdef __cplusplus
extern "C"
{
#endif

#include <stdbool.h>
#include <stdint.h>

#define VKLINK_MSG_HEAD 0XFE           /* vklink 消息帧头 */
#define VKLINK_MSG_PAYLOAD_MAX_LEN 255 /* 消息 buffer 最大字节长度 */
    /*-------------------------- vklink 消息结构体  -----------------*/

    typedef enum
    {
        VKLINK_RX_HEAD = 0,
        VKLINK_RX_PAYLOAD_LEN,
        VKLINK_RX_SEQ,
        VKLINK_RX_SYSID,
        VKLINK_RX_COMPID,
        VKLINK_RX_MSGID,
        VKLINK_RX_PAYLOAD,
        VKLINK_RX_CHECK_LOW,
        VKLINK_RX_CHECK_HIGH,
    } VKlink_Msg_Rx_Stage;

    typedef struct
    {
        /* 传输消息数据结构  */
        uint8_t head;
        uint8_t payload_len;
        uint8_t seq;
        uint8_t sysid;
        uint8_t compid;
        uint8_t msgid;
        uint8_t payload[VKLINK_MSG_PAYLOAD_MAX_LEN];
        uint16_t crc16_check;

        /* 消息接收阶段 */
        VKlink_Msg_Rx_Stage rx_stage;
        /* payload 段接收索引 */
        uint16_t payload_rx_index;

    } VKlink_Msg_Type;

    int VKlink_ParseChar(VKlink_Msg_Type *msg, uint8_t data);

    int vklink_msg_payload_put_data(VKlink_Msg_Type *msg, const void *pdata,
                                    uint8_t len);

    uint32_t VKlink_MsgTxFormat(const VKlink_Msg_Type *msg, uint8_t *pTxBuf);

#ifdef __cplusplus
}
#endif

#endif /* APPLICATIONS_VKLINK_H_ */