Creates macros for determining model message lengths based on opcode, payload length and MIC size. Also adds macro wrapping NET_BUF_SIMPLE_DEFINE to serve the most common use case.
497 lines
17 KiB
C
497 lines
17 KiB
C
/** @file
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* @brief Bluetooth Mesh Access Layer APIs.
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*/
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/*
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* Copyright (c) 2017 Intel Corporation
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* Additional Copyright (c) 2018 Espressif Systems (Shanghai) PTE LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef _BLE_MESH_ACCESS_H_
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#define _BLE_MESH_ACCESS_H_
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#include <stddef.h>
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#include "mesh_types.h"
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#include "mesh_util.h"
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#include "mesh_buf.h"
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#include "sdkconfig.h"
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/**
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* @brief Bluetooth Mesh Access Layer
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* @defgroup bt_mesh_access Bluetooth Mesh Access Layer
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* @ingroup bt_mesh
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* @{
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*/
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#define BLE_MESH_ADDR_UNASSIGNED 0x0000
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#define BLE_MESH_ADDR_ALL_NODES 0xffff
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#define BLE_MESH_ADDR_PROXIES 0xfffc
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#define BLE_MESH_ADDR_FRIENDS 0xfffd
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#define BLE_MESH_ADDR_RELAYS 0xfffe
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#define BLE_MESH_KEY_UNUSED 0xffff
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#define BLE_MESH_KEY_DEV 0xfffe
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/** Helper to define a mesh element within an array.
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*
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* In case the element has no SIG or Vendor models the helper
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* macro BLE_MESH_MODEL_NONE can be given instead.
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*
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* @param _loc Location Descriptor.
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* @param _mods Array of models.
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* @param _vnd_mods Array of vendor models.
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*/
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#define BLE_MESH_ELEM(_loc, _mods, _vnd_mods) \
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{ \
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.loc = (_loc), \
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.model_count = ARRAY_SIZE(_mods), \
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.models = (_mods), \
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.vnd_model_count = ARRAY_SIZE(_vnd_mods), \
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.vnd_models = (_vnd_mods), \
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}
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/** Abstraction that describes a Mesh Element */
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struct bt_mesh_elem {
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/* Unicast Address. Set at runtime during provisioning. */
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u16_t addr;
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/* Location Descriptor (GATT Bluetooth Namespace Descriptors) */
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const u16_t loc;
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const u8_t model_count;
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const u8_t vnd_model_count;
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struct bt_mesh_model *const models;
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struct bt_mesh_model *const vnd_models;
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};
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/* Foundation Models */
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#define BLE_MESH_MODEL_ID_CFG_SRV 0x0000
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#define BLE_MESH_MODEL_ID_CFG_CLI 0x0001
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#define BLE_MESH_MODEL_ID_HEALTH_SRV 0x0002
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#define BLE_MESH_MODEL_ID_HEALTH_CLI 0x0003
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/* Models from the Mesh Model Specification */
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#define BLE_MESH_MODEL_ID_GEN_ONOFF_SRV 0x1000
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#define BLE_MESH_MODEL_ID_GEN_ONOFF_CLI 0x1001
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#define BLE_MESH_MODEL_ID_GEN_LEVEL_SRV 0x1002
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#define BLE_MESH_MODEL_ID_GEN_LEVEL_CLI 0x1003
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#define BLE_MESH_MODEL_ID_GEN_DEF_TRANS_TIME_SRV 0x1004
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#define BLE_MESH_MODEL_ID_GEN_DEF_TRANS_TIME_CLI 0x1005
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#define BLE_MESH_MODEL_ID_GEN_POWER_ONOFF_SRV 0x1006
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#define BLE_MESH_MODEL_ID_GEN_POWER_ONOFF_SETUP_SRV 0x1007
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#define BLE_MESH_MODEL_ID_GEN_POWER_ONOFF_CLI 0x1008
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#define BLE_MESH_MODEL_ID_GEN_POWER_LEVEL_SRV 0x1009
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#define BLE_MESH_MODEL_ID_GEN_POWER_LEVEL_SETUP_SRV 0x100a
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#define BLE_MESH_MODEL_ID_GEN_POWER_LEVEL_CLI 0x100b
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#define BLE_MESH_MODEL_ID_GEN_BATTERY_SRV 0x100c
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#define BLE_MESH_MODEL_ID_GEN_BATTERY_CLI 0x100d
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#define BLE_MESH_MODEL_ID_GEN_LOCATION_SRV 0x100e
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#define BLE_MESH_MODEL_ID_GEN_LOCATION_SETUP_SRV 0x100f
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#define BLE_MESH_MODEL_ID_GEN_LOCATION_CLI 0x1010
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#define BLE_MESH_MODEL_ID_GEN_ADMIN_PROP_SRV 0x1011
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#define BLE_MESH_MODEL_ID_GEN_MANUFACTURER_PROP_SRV 0x1012
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#define BLE_MESH_MODEL_ID_GEN_USER_PROP_SRV 0x1013
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#define BLE_MESH_MODEL_ID_GEN_CLIENT_PROP_SRV 0x1014
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#define BLE_MESH_MODEL_ID_GEN_PROP_CLI 0x1015
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#define BLE_MESH_MODEL_ID_SENSOR_SRV 0x1100
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#define BLE_MESH_MODEL_ID_SENSOR_SETUP_SRV 0x1101
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#define BLE_MESH_MODEL_ID_SENSOR_CLI 0x1102
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#define BLE_MESH_MODEL_ID_TIME_SRV 0x1200
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#define BLE_MESH_MODEL_ID_TIME_SETUP_SRV 0x1201
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#define BLE_MESH_MODEL_ID_TIME_CLI 0x1202
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#define BLE_MESH_MODEL_ID_SCENE_SRV 0x1203
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#define BLE_MESH_MODEL_ID_SCENE_SETUP_SRV 0x1204
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#define BLE_MESH_MODEL_ID_SCENE_CLI 0x1205
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#define BLE_MESH_MODEL_ID_SCHEDULER_SRV 0x1206
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#define BLE_MESH_MODEL_ID_SCHEDULER_SETUP_SRV 0x1207
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#define BLE_MESH_MODEL_ID_SCHEDULER_CLI 0x1208
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#define BLE_MESH_MODEL_ID_LIGHT_LIGHTNESS_SRV 0x1300
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#define BLE_MESH_MODEL_ID_LIGHT_LIGHTNESS_SETUP_SRV 0x1301
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#define BLE_MESH_MODEL_ID_LIGHT_LIGHTNESS_CLI 0x1302
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#define BLE_MESH_MODEL_ID_LIGHT_CTL_SRV 0x1303
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#define BLE_MESH_MODEL_ID_LIGHT_CTL_SETUP_SRV 0x1304
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#define BLE_MESH_MODEL_ID_LIGHT_CTL_CLI 0x1305
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#define BLE_MESH_MODEL_ID_LIGHT_CTL_TEMP_SRV 0x1306
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#define BLE_MESH_MODEL_ID_LIGHT_HSL_SRV 0x1307
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#define BLE_MESH_MODEL_ID_LIGHT_HSL_SETUP_SRV 0x1308
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#define BLE_MESH_MODEL_ID_LIGHT_HSL_CLI 0x1309
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#define BLE_MESH_MODEL_ID_LIGHT_HSL_HUE_SRV 0x130a
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#define BLE_MESH_MODEL_ID_LIGHT_HSL_SAT_SRV 0x130b
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#define BLE_MESH_MODEL_ID_LIGHT_XYL_SRV 0x130c
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#define BLE_MESH_MODEL_ID_LIGHT_XYL_SETUP_SRV 0x130d
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#define BLE_MESH_MODEL_ID_LIGHT_XYL_CLI 0x130e
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#define BLE_MESH_MODEL_ID_LIGHT_LC_SRV 0x130f
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#define BLE_MESH_MODEL_ID_LIGHT_LC_SETUP_SRV 0x1310
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#define BLE_MESH_MODEL_ID_LIGHT_LC_CLI 0x1311
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/** Message sending context. */
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struct bt_mesh_msg_ctx {
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/** NetKey Index of the subnet to send the message on. */
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u16_t net_idx;
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/** AppKey Index to encrypt the message with. */
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u16_t app_idx;
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/** Remote address. */
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u16_t addr;
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/** Destination address of a received message. Not used for sending. */
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u16_t recv_dst;
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/** RSSI of received packet. Not used for sending. */
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s8_t recv_rssi;
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/** Received TTL value. Not used for sending. */
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u8_t recv_ttl: 7;
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/** Force sending reliably by using segment acknowledgement */
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u8_t send_rel: 1;
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/** TTL, or BLE_MESH_TTL_DEFAULT for default TTL. */
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u8_t send_ttl;
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/** Change by Espressif, opcode of a received message.
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* Not used for sending message. */
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u32_t recv_op;
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/** Change by Espressif, model corresponds to the message */
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struct bt_mesh_model *model;
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/** Change by Espressif, if the message is sent by a server
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* model. Not used for receiving message. */
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bool srv_send;
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};
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struct bt_mesh_model_op {
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/* OpCode encoded using the BLE_MESH_MODEL_OP_* macros */
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const u32_t opcode;
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/* Minimum required message length */
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const size_t min_len;
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/* Message handler for the opcode */
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void (*const func)(struct bt_mesh_model *model,
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struct bt_mesh_msg_ctx *ctx,
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struct net_buf_simple *buf);
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};
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#define BLE_MESH_MODEL_OP_1(b0) (b0)
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#define BLE_MESH_MODEL_OP_2(b0, b1) (((b0) << 8) | (b1))
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#define BLE_MESH_MODEL_OP_3(b0, cid) ((((b0) << 16) | 0xc00000) | (cid))
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#define BLE_MESH_MODEL_OP_END { 0, 0, NULL }
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#define BLE_MESH_MODEL_NO_OPS ((struct bt_mesh_model_op []) \
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{ BLE_MESH_MODEL_OP_END })
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/** Helper to define an empty model array */
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#define BLE_MESH_MODEL_NONE ((struct bt_mesh_model []){})
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/** Length of a short Mesh MIC. */
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#define BLE_MESH_MIC_SHORT 4
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/** Length of a long Mesh MIC. */
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#define BLE_MESH_MIC_LONG 8
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/** @def BLE_MESH_MODEL_OP_LEN
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*
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* @brief Helper to determine the length of an opcode.
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*
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* @param _op Opcode.
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*/
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#define BLE_MESH_MODEL_OP_LEN(_op) ((_op) <= 0xff ? 1 : (_op) <= 0xffff ? 2 : 3)
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/** @def BLE_MESH_MODEL_BUF_LEN
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*
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* @brief Helper for model message buffer length.
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*
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* Returns the length of a Mesh model message buffer, including the opcode
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* length and a short MIC.
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*
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* @param _op Opcode of the message.
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* @param _payload_len Length of the model payload.
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*/
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#define BLE_MESH_MODEL_BUF_LEN(_op, _payload_len) \
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(BLE_MESH_MODEL_OP_LEN(_op) + (_payload_len) + BLE_MESH_MIC_SHORT)
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/** @def BLE_MESH_MODEL_BUF_LEN_LONG_MIC
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*
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* @brief Helper for model message buffer length.
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*
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* Returns the length of a Mesh model message buffer, including the opcode
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* length and a long MIC.
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*
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* @param _op Opcode of the message.
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* @param _payload_len Length of the model payload.
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*/
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#define BLE_MESH_MODEL_BUF_LEN_LONG_MIC(_op, _payload_len) \
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(BLE_MESH_MODEL_OP_LEN(_op) + (_payload_len) + BLE_MESH_MIC_LONG)
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/** @def BLE_MESH_MODEL_BUF_DEFINE
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*
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* @brief Define a Mesh model message buffer using @ref NET_BUF_SIMPLE_DEFINE.
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*
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* @param _buf Buffer name.
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* @param _op Opcode of the message.
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* @param _payload_len Length of the model message payload.
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*/
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#define BLE_MESH_MODEL_BUF_DEFINE(_buf, _op, _payload_len) \
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NET_BUF_SIMPLE_DEFINE(_buf, BLE_MESH_MODEL_BUF_LEN(_op, (_payload_len)))
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#define BLE_MESH_MODEL(_id, _op, _pub, _user_data) \
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{ \
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.id = (_id), \
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.op = _op, \
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.keys = { [0 ... (CONFIG_BLE_MESH_MODEL_KEY_COUNT - 1)] = \
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BLE_MESH_KEY_UNUSED }, \
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.pub = _pub, \
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.groups = { [0 ... (CONFIG_BLE_MESH_MODEL_GROUP_COUNT - 1)] = \
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BLE_MESH_ADDR_UNASSIGNED }, \
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.user_data = _user_data, \
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}
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#define BLE_MESH_MODEL_VND(_company, _id, _op, _pub, _user_data) \
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{ \
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.vnd.company = (_company), \
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.vnd.id = (_id), \
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.op = _op, \
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.pub = _pub, \
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.keys = { [0 ... (CONFIG_BLE_MESH_MODEL_KEY_COUNT - 1)] = \
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BLE_MESH_KEY_UNUSED }, \
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.groups = { [0 ... (CONFIG_BLE_MESH_MODEL_GROUP_COUNT - 1)] = \
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BLE_MESH_ADDR_UNASSIGNED }, \
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.user_data = _user_data, \
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}
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/** @def BLE_MESH_TRANSMIT
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*
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* @brief Encode transmission count & interval steps.
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*
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* @param count Number of retransmissions (first transmission is excluded).
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* @param int_ms Interval steps in milliseconds. Must be greater than 0
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* and a multiple of 10.
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*
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* @return Mesh transmit value that can be used e.g. for the default
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* values of the configuration model data.
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*/
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#define BLE_MESH_TRANSMIT(count, int_ms) ((count) | (((int_ms / 10) - 1) << 3))
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/** @def BLE_MESH_TRANSMIT_COUNT
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*
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* @brief Decode transmit count from a transmit value.
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*
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* @param transmit Encoded transmit count & interval value.
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*
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* @return Transmission count (actual transmissions is N + 1).
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*/
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#define BLE_MESH_TRANSMIT_COUNT(transmit) (((transmit) & (u8_t)BIT_MASK(3)))
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/** @def BLE_MESH_TRANSMIT_INT
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*
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* @brief Decode transmit interval from a transmit value.
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*
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* @param transmit Encoded transmit count & interval value.
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*
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* @return Transmission interval in milliseconds.
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*/
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#define BLE_MESH_TRANSMIT_INT(transmit) ((((transmit) >> 3) + 1) * 10)
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/** @def BLE_MESH_PUB_TRANSMIT
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*
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* @brief Encode Publish Retransmit count & interval steps.
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*
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* @param count Number of retransmissions (first transmission is excluded).
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* @param int_ms Interval steps in milliseconds. Must be greater than 0
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* and a multiple of 50.
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*
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* @return Mesh transmit value that can be used e.g. for the default
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* values of the configuration model data.
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*/
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#define BLE_MESH_PUB_TRANSMIT(count, int_ms) BLE_MESH_TRANSMIT(count, (int_ms) / 5)
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/** @def BLE_MESH_PUB_TRANSMIT_COUNT
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*
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* @brief Decode Pubhlish Retransmit count from a given value.
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*
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* @param transmit Encoded Publish Retransmit count & interval value.
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*
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* @return Retransmission count (actual transmissions is N + 1).
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*/
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#define BLE_MESH_PUB_TRANSMIT_COUNT(transmit) BLE_MESH_TRANSMIT_COUNT(transmit)
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/** @def BLE_MESH_PUB_TRANSMIT_INT
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*
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* @brief Decode Publish Retransmit interval from a given value.
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*
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* @param transmit Encoded Publish Retransmit count & interval value.
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*
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* @return Transmission interval in milliseconds.
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*/
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#define BLE_MESH_PUB_TRANSMIT_INT(transmit) ((((transmit) >> 3) + 1) * 50)
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/** Model publication context. */
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struct bt_mesh_model_pub {
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/** The model the context belongs to. Initialized by the stack. */
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struct bt_mesh_model *mod;
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u16_t addr; /**< Publish Address. */
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u16_t key; /**< Publish AppKey Index. */
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u8_t ttl; /**< Publish Time to Live. */
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u8_t retransmit; /**< Retransmit Count & Interval Steps. */
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u8_t period; /**< Publish Period. */
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u16_t period_div: 4, /**< Divisor for the Period. */
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cred: 1, /**< Friendship Credentials Flag. */
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fast_period: 1, /**< Use FastPeriodDivisor */
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count: 3; /**< Retransmissions left. */
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u32_t period_start; /**< Start of the current period. */
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/** @brief Publication buffer, containing the publication message.
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*
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* This will get correctly created when the publication context
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* has been defined using the BLE_MESH_MODEL_PUB_DEFINE macro.
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*
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* BLE_MESH_MODEL_PUB_DEFINE(name, update, size);
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*/
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struct net_buf_simple *msg;
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/** @brief Callback for updating the publication buffer.
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*
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* When set to NULL, the model is assumed not to support
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* periodic publishing. When set to non-NULL the callback
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* will be called periodically and is expected to update
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* @ref bt_mesh_model_pub.msg with a valid publication
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* message.
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*
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* @param mod The Model the Publication Context belogs to.
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*
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* @return Zero on success or (negative) error code otherwise.
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*/
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int (*update)(struct bt_mesh_model *mod);
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/* Change by Espressif, role of the device going to publish messages */
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u8_t dev_role;
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/** Publish Period Timer. Only for stack-internal use. */
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struct k_delayed_work timer;
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};
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/** @def BLE_MESH_MODEL_PUB_DEFINE
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*
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* Define a model publication context.
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*
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* @param _name Variable name given to the context.
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* @param _update Optional message update callback (may be NULL).
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* @param _msg_len Length of the publication message.
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*/
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#define BLE_MESH_MODEL_PUB_DEFINE(_name, _update, _msg_len) \
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NET_BUF_SIMPLE_DEFINE_STATIC(bt_mesh_pub_msg_##_name, _msg_len); \
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static struct bt_mesh_model_pub _name = { \
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.update = _update, \
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.msg = &bt_mesh_pub_msg_##_name, \
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}
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/** Abstraction that describes a Mesh Model instance */
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struct bt_mesh_model {
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union {
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const u16_t id;
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struct {
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u16_t company;
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u16_t id;
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} vnd;
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};
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/* Internal information, mainly for persistent storage */
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u8_t elem_idx; /* Belongs to Nth element */
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u8_t model_idx; /* Is the Nth model in the element */
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u16_t flags; /* Information about what has changed */
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/* The Element this Model belongs to */
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struct bt_mesh_elem *elem;
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/* Model Publication */
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struct bt_mesh_model_pub *const pub;
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/* AppKey List */
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u16_t keys[CONFIG_BLE_MESH_MODEL_KEY_COUNT];
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/* Subscription List (group or virtual addresses) */
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u16_t groups[CONFIG_BLE_MESH_MODEL_GROUP_COUNT];
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const struct bt_mesh_model_op *const op;
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/* Model-specific user data */
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void *user_data;
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};
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struct bt_mesh_send_cb {
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void (*start)(u16_t duration, int err, void *cb_data);
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void (*end)(int err, void *cb_data);
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};
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void bt_mesh_model_msg_init(struct net_buf_simple *msg, u32_t opcode);
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/** Special TTL value to request using configured default TTL */
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#define BLE_MESH_TTL_DEFAULT 0xff
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/** Maximum allowed TTL value */
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#define BLE_MESH_TTL_MAX 0x7f
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/**
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* @brief Send an Access Layer message.
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*
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* @param model Mesh (client) Model that the message belongs to.
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* @param ctx Message context, includes keys, TTL, etc.
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* @param msg Access Layer payload (the actual message to be sent).
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* @param cb Optional "message sent" callback.
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* @param cb_data User data to be passed to the callback.
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*
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* @return 0 on success, or (negative) error code on failure.
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*/
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int bt_mesh_model_send(struct bt_mesh_model *model,
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struct bt_mesh_msg_ctx *ctx,
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struct net_buf_simple *msg,
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const struct bt_mesh_send_cb *cb,
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void *cb_data);
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/**
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* @brief Send a model publication message.
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*
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* Before calling this function, the user needs to ensure that the model
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* publication message (@ref bt_mesh_model_pub.msg) contains a valid
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* message to be sent. Note that this API is only to be used for
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* non-period publishing. For periodic publishing the app only needs
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* to make sure that @ref bt_mesh_model_pub.msg contains a valid message
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* whenever the @ref bt_mesh_model_pub.update callback is called.
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*
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* @param model Mesh (client) Model that's publishing the message.
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*
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* @return 0 on success, or (negative) error code on failure.
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*/
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int bt_mesh_model_publish(struct bt_mesh_model *model);
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/**
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* @brief Get the element that a model belongs to.
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*
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* @param mod Mesh model.
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*
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* @return Pointer to the element that the given model belongs to.
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*/
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struct bt_mesh_elem *bt_mesh_model_elem(struct bt_mesh_model *mod);
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/** Node Composition */
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struct bt_mesh_comp {
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u16_t cid;
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u16_t pid;
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u16_t vid;
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size_t elem_count;
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struct bt_mesh_elem *elem;
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};
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/**
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* @}
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*/
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#endif /* __BLE_MESH_ACCESS_H */
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