Lee Kai Xuan / mbed-os

mbed-os

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features/nanostack/FEATURE_NANOSTACK/mbed-mesh-api/README.md@1:3deb71413561, 2017-07-20 (annotated)

Committer:
xuaner
Date:
Thu Jul 20 14:26:57 2017 +0000
Revision:
1:3deb71413561
Parent:
0:f269e3021894 
mbed_os

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elessair 0:f269e3021894 1 # mbed mesh API
elessair 0:f269e3021894 2
elessair 0:f269e3021894 3 ARM mbed mesh API allows the client to use the IPv6 mesh network.
elessair 0:f269e3021894 4
elessair 0:f269e3021894 5 The client can use the `LoWPANNDInterface` or `ThreadInterface` object for connecting to the mesh network and when successfully connected, the client can create a socket by using the [mbed C++ socket API](https://developer.mbed.org/teams/NetworkSocketAPI/code/NetworkSocketAPI/docs/tip/) to start communication with a remote peer.
elessair 0:f269e3021894 6
elessair 0:f269e3021894 7 ## Supported mesh networking modes
elessair 0:f269e3021894 8
elessair 0:f269e3021894 9 Currently, 6LoWPAN-ND (neighbour discovery) and Thread bootstrap modes are supported.
elessair 0:f269e3021894 10
elessair 0:f269e3021894 11 ## Module Configuration
elessair 0:f269e3021894 12
elessair 0:f269e3021894 13 This module supports static configuration via **mbed configuration system** by using the `mbed_app.json` file. The application needs to create the configuration file if it wants to use other than default settings.
elessair 0:f269e3021894 14
elessair 0:f269e3021894 15 An example of the configuration file:
elessair 0:f269e3021894 16
elessair 0:f269e3021894 17 ```
elessair 0:f269e3021894 18 {
elessair 0:f269e3021894 19 "target_overrides": {
elessair 0:f269e3021894 20 "*": {
elessair 0:f269e3021894 21 "target.features_add": ["IPV6"],
elessair 0:f269e3021894 22 "mbed-mesh-api.6lowpan-nd-channel": 12,
elessair 0:f269e3021894 23 "mbed-mesh-api.6lowpan-nd-channel-mask": "(1<<12)",
elessair 0:f269e3021894 24 "mbed-mesh-api.heap-size": 10000
elessair 0:f269e3021894 25 }
elessair 0:f269e3021894 26 }
elessair 0:f269e3021894 27 }
elessair 0:f269e3021894 28 ```
elessair 0:f269e3021894 29
elessair 0:f269e3021894 30 **Configurable parameters in section `mbed-mesh-api`:**
elessair 0:f269e3021894 31
elessair 0:f269e3021894 32 | Parameter name | Value | Description |
elessair 0:f269e3021894 33 | --------------- | ------------- | ----------- |
elessair 0:f269e3021894 34 | heap-size | number [0-0xfffe] | Nanostack's internal heap size |
elessair 0:f269e3021894 35
elessair 0:f269e3021894 36 **Thread related configuration parameters:**
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 | Parameter name | Value | Description |
elessair 0:f269e3021894 39 | --------------- | ------------- | ----------- |
elessair 0:f269e3021894 40 | thread-pskd | string [6-255 chars] | Human-scaled commissioning credentials. |
elessair 0:f269e3021894 41 | hread-device-type | enum from mesh_device_type_t | Set device operating mode. |
elessair 0:f269e3021894 42 | thread-config-channel-mask | number [0-0x07fff800] | Channel mask, 0x07fff800 scans all channels. |
elessair 0:f269e3021894 43 | thread-config-channel-page | number [0, 2]| Channel page, 0 for 2,4 GHz and 2 for sub-GHz radios. |
elessair 0:f269e3021894 44 | thread-config-channel | number [0-27] | RF channel to use. |
elessair 0:f269e3021894 45 | thread-config-panid | number [0-0xFFFF] | Network identifier. |
elessair 0:f269e3021894 46 | thread-master-key | byte array [16]| Network master key. |
elessair 0:f269e3021894 47 | thread-config-ml-prefix | byte array [8] | Mesh local prefix. |
elessair 0:f269e3021894 48 | thread-config-pskc | byte array [16] | Pre-Shared Key for the Commissioner. |
elessair 0:f269e3021894 49
elessair 0:f269e3021894 50 **6LoWPAN related configuration parameters:**
elessair 0:f269e3021894 51
elessair 0:f269e3021894 52 | Parameter name | Type | Description |
elessair 0:f269e3021894 53 | --------------- | ---------| ----------- |
elessair 0:f269e3021894 54 | 6lowpan-nd-channel-mask | number [0-0x07fff800] | Channel mask, bit-mask of channels to use |
elessair 0:f269e3021894 55 | 6lowpan-nd-channel-page | number [0, 2] | 0 for 2,4 GHz and 2 for sub-GHz radios |
elessair 0:f269e3021894 56 | 6lowpan-nd-channel | number [0-27] | RF channel to use when `channel_mask` is not defined |
elessair 0:f269e3021894 57 | 6lowpan-nd-security-mode | "NONE" or "PSK" | To use either no security, or Pre shared network key |
elessair 0:f269e3021894 58 | 6lowpan-nd-psk-key-id | number | PSK key id when PSK is enabled |
elessair 0:f269e3021894 59 | 6lowpan-nd-psk-key | byte array [16] | Pre shared network key |
elessair 0:f269e3021894 60 | 6lowpan-nd-sec-level | number [1-7] | Network security level. Use default `5` |
elessair 0:f269e3021894 61 | 6lowpan-nd-device-type | "NET_6LOWPAN_ROUTER" or "NET_6LOWPAN_HOST" | Device mode. Router is routing packets from other device, creating a mesh network. |
elessair 0:f269e3021894 62
elessair 0:f269e3021894 63 ## Usage notes
elessair 0:f269e3021894 64
elessair 0:f269e3021894 65 This module should not be used directly by the applications. The applications should use the `LoWPANNDInterface` or `ThreadInterface` directly.
elessair 0:f269e3021894 66
elessair 0:f269e3021894 67 ### Network connection states
elessair 0:f269e3021894 68
elessair 0:f269e3021894 69 After the initialization, the network state is `MESH_DISCONNECTED`. After a successful connection, the state changes to `MESH_CONNECTED` and when disconnected from the network the state is changed back to `MESH_DISCONNECTED`.
elessair 0:f269e3021894 70
elessair 0:f269e3021894 71 In case of connection errors, the state is changed to some of the connection error states. In an error state, there is no need to make a `disconnect` request and the client is allowed to attempt connecting again.
elessair 0:f269e3021894 72
elessair 0:f269e3021894 73 ## Getting started
elessair 0:f269e3021894 74
elessair 0:f269e3021894 75 See the example application [mbed-os-example-mesh-minimal](https://github.com/ARMmbed/mbed-os-example-mesh-minimal) for usage.
elessair 0:f269e3021894 76
elessair 0:f269e3021894 77 ## Usage example for 6LoWPAN ND mode
elessair 0:f269e3021894 78
elessair 0:f269e3021894 79 **Create a network interface:**
elessair 0:f269e3021894 80
elessair 0:f269e3021894 81 ```
elessair 0:f269e3021894 82 LoWPANNDInterface mesh;
elessair 0:f269e3021894 83 ```
elessair 0:f269e3021894 84
elessair 0:f269e3021894 85 **Connect:**
elessair 0:f269e3021894 86
elessair 0:f269e3021894 87 ```
elessair 0:f269e3021894 88 if (mesh.connect()) {
elessair 0:f269e3021894 89 printf("Connection failed!\r\n");
elessair 0:f269e3021894 90 return -1;
elessair 0:f269e3021894 91 }
elessair 0:f269e3021894 92
elessair 0:f269e3021894 93 printf("connected. IP = %s\r\n", mesh.get_ip_address());
elessair 0:f269e3021894 94 ```
elessair 0:f269e3021894 95
elessair 0:f269e3021894 96 ## Usage example for 6LoWPAN Thread mode
elessair 0:f269e3021894 97
elessair 0:f269e3021894 98 Basically the same as for ND, but the network interface uses different class:
elessair 0:f269e3021894 99
elessair 0:f269e3021894 100 ```
elessair 0:f269e3021894 101 ThreadInterface mesh;
elessair 0:f269e3021894 102 mesh.connect();
elessair 0:f269e3021894 103 ```