attribute_frames.h

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/* Copyright 2017 Wirepas Ltd. All Rights Reserved.
 *
 * See file LICENSE.txt for full license details.
 *
 */
 
#ifndef ATTRIBUTE_FRAMES_H_
#define ATTRIBUTE_FRAMES_H_
 
/* How much space is reserved for attributes in attribute related primitive */
#define WAPS_MAX_ATTR_LEN   16
 
typedef struct __attribute__ ((__packed__))
{
    attr_t      attr_id;
} read_req_t;
 
typedef enum
{
    ATTR_SUCCESS = 0,
    ATTR_UNSUPPORTED_ATTRIBUTE = 1,
    ATTR_INVALID_STACK_STATE = 2,
    ATTR_INV_LENGTH = 3,
    ATTR_INV_VALUE = 4,
    ATTR_WRITE_ONLY = 5,
    ATTR_ACCESS_DENIED = 6,
} attribute_result_e;
 
typedef struct __attribute__ ((__packed__))
{
    uint8_t result;
    attr_t  attr_id;
    uint8_t attr_len;
    uint8_t attr[WAPS_MAX_ATTR_LEN];
} read_cnf_t;
 
#define FRAME_READ_CNF_HEADER_SIZE      \
    (sizeof(read_cnf_t)-WAPS_MAX_ATTR_LEN)
 
typedef struct __attribute__ ((__packed__))
{
    attr_t  attr_id;
    uint8_t attr_len;
    uint8_t attr[WAPS_MAX_ATTR_LEN];
} write_req_t;
 
#define FRAME_WRITE_REQ_HEADER_SIZE     \
    (sizeof(write_req_t)-WAPS_MAX_ATTR_LEN)
 
typedef struct __attribute__ ((__packed__))
{
    uint8_t result;
} write_cnf_t;
 
//assert_static(sizeof(read_cnf_t)  == 20);
//assert_static(sizeof(read_req_t)  == 2);
//assert_static(sizeof(write_req_t) == 19);
//assert_static(sizeof(write_cnf_t) == 1);
 
typedef union
{
    read_cnf_t  read_cnf;
    read_req_t  read_req;
    write_req_t write_req;
    write_cnf_t write_cnf;
} frame_attr;
 
#endif /* ATTRIBUTE_FRAMES_H_ */