Diff: features/net/FEATURE_IPV6/mbed-mesh-api/README.md

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+# mbed mesh API
+
+ARM mbed mesh API allows the client to use the IPv6 mesh network.
+
+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.
+
+## Supported mesh networking modes
+
+Currently, 6LoWPAN-ND (neighbour discovery) and Thread bootstrap modes are supported.
+
+## Module Configuration
+
+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. 
+
+An example of the configuration file:
+
+```
+{
+    "target_overrides": {
+        "*": {
+            "target.features_add": ["IPV6"],
+            "mbed-mesh-api.6lowpan-nd-channel": 12,
+            "mbed-mesh-api.6lowpan-nd-channel-mask": "(1<<12)",
+            "mbed-mesh-api.heap-size": 10000
+        }
+    }
+}
+```
+
+**Configurable parameters in section `mbed-mesh-api`:**
+
+| Parameter name  | Value         | Description |
+| --------------- | ------------- | ----------- |
+| heap-size       | number [0-0xfffe] | Nanostack's internal heap size |
+
+**Thread related configuration parameters:**
+
+| Parameter name  | Value         | Description |
+| --------------- | ------------- | ----------- |
+| thread-pskd     | string [6-255 chars] | Human-scaled commissioning credentials. |
+| hread-device-type | enum from mesh_device_type_t | Set device operating mode. |
+| thread-config-channel-mask | number [0-0x07fff800] | Channel mask, 0x07fff800 scans all channels. |
+| thread-config-channel-page | number [0, 2]| Channel page, 0 for 2,4 GHz and 2 for sub-GHz radios. |
+| thread-config-channel      | number [0-27] | RF channel to use. |
+| thread-config-panid        | number [0-0xFFFF] | Network identifier. |
+| thread-master-key      | byte array [16]| Network master key. |
+| thread-config-ml-prefix | byte array [8] | Mesh local prefix. |
+| thread-config-pskc      | byte array [16] | Pre-Shared Key for the Commissioner. |
+
+**6LoWPAN related configuration parameters:**
+
+| Parameter name  | Type     | Description |
+| --------------- | ---------| ----------- |
+| 6lowpan-nd-channel-mask    | number [0-0x07fff800] | Channel mask, bit-mask of channels to use |
+| 6lowpan-nd-channel-page   | number [0, 2] | 0 for 2,4 GHz and 2 for sub-GHz radios |
+| 6lowpan-nd-channel        | number [0-27] | RF channel to use when `channel_mask` is not defined |
+| 6lowpan-nd-security-mode | "NONE" or "PSK" | To use either no security, or Pre shared network key |
+| 6lowpan-nd-psk-key-id | number | PSK key id when PSK is enabled |
+| 6lowpan-nd-psk-key | byte array [16] | Pre shared network key |
+| 6lowpan-nd-sec-level | number [1-7] | Network security level. Use default `5` |
+
+
+## Usage notes
+
+This module should not be used directly by the applications. The applications should use the `LoWPANNDInterface` or `ThreadInterface` directly.
+
+### Network connection states
+
+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`.
+
+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.
+
+## Getting started
+
+See the example application [mbed-os-example-mesh-minimal](https://github.com/ARMmbed/mbed-os-example-mesh-minimal) for usage.
+
+## Usage example for 6LoWPAN ND mode
+
+**Create a network interface:**
+
+```
+LoWPANNDInterface mesh;
+```
+
+**Connect:**
+
+```
+    if (mesh.connect()) {
+        printf("Connection failed!\r\n");
+        return -1;
+    }
+
+    printf("connected. IP = %s\r\n", mesh.get_ip_address());
+```
+
+## Usage example for 6LoWPAN Thread mode
+
+Basically the same as for ND, but the network interface uses different class:
+
+```
+ThreadInterface mesh;
+mesh.connect();
+```