/****************************************************************************

Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.

This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
be copied by any method or incorporated into another program without
the express written consent of Aerospace C.Power. This Information or any portion
thereof remains the property of Aerospace C.Power. The Information contained herein
is believed to be accurate and Aerospace C.Power assumes no responsibility or
liability for its use in any way and conveys no license or title under
any patent or copyright and makes no representation or warranty that this
Information is free from patent or copyright infringement.

****************************************************************************/
#ifndef HTBUS_PROTO_H
#define HTBUS_PROTO_H

/* os shim includes */
#include "os_types.h"

/* public api includes */
#include "plc_fr.h"
#include "plc_utils.h"

#ifdef __cplusplus
extern "C" {
#endif

/* TEI definitions */
#define HTBUS_TEI_INVAL                 (0)
#define HTBUS_TEI_CCO                   (1)
#define HTBUS_TEI_FIRST                 (1)

/* #define number of nodes supported in the HTBUS network */
#define HTBUS_NETWORK_SCALE             (2)

#define HTBUS_TEI_LAST                  (HTBUS_NETWORK_SCALE)

#define HTBUS_TEI_MAX_NUM               (HTBUS_TEI_LAST - HTBUS_TEI_FIRST + 1)
#define HTBUS_TEI_BCAST                 (0xFF)
#define HTBUS_TEI_IS_VALID(__tei) \
    ((__tei) >= HTBUS_TEI_FIRST && (__tei) <= HTBUS_TEI_LAST)

#define HTBUS_TEI_BM_SIZE               iot_ceil(HTBUS_TEI_MAX_NUM, 8)

#pragma pack(push)  /* save the pack status */
#pragma pack(1)     /* 1 byte align */

/* #define htbus service data unit function code */
#define HTBUS_PROTO_FN_COMM_TEST        0xF

/* htbus service Data Unit header */
typedef struct  {
    /* destination tei, see HTBUS_TEI_XXX */
    uint8_t  src_tei;
    /* source tei, see HTBUS_TEI_XXX */
    uint8_t  dst_tei;
    /* seq number */
    uint8_t  sn;
    /* function code, see HTBUS_PROTO_FN_XXX */
    uint16_t  fn         :4,
    /* data len */
              len        :12;
    /* payload label */
    uint8_t  data[0];
} htbus_sdu_hdr_t;

#pragma pack(pop)   /* restore the pack status */

#ifdef __cplusplus
}
#endif

#endif /* HTBUS_PROTO_H */