126 lines
5.9 KiB
ReStructuredText
126 lines
5.9 KiB
ReStructuredText
.. _lwm2m-client-sample:
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LwM2M client
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############
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Overview
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********
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Lightweight Machine to Machine (LwM2M) is an application layer protocol
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based on CoAP/UDP, and is designed to expose various resources for reading,
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writing and executing via an LwM2M server in a very lightweight environment.
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This LwM2M client sample application for Zephyr implements the LwM2M library
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and establishes both IPv4 and IPv6 connections to an LwM2M server using
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the `Open Mobile Alliance Lightweight Machine to Machine Technical
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Specification`_ (Section 5.3: Client Registration Interface).
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.. _Open Mobile Alliance Lightweight Machine to Machine Technical Specification:
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http://www.openmobilealliance.org/release/LightweightM2M/V1_0-20170208-A/OMA-TS-LightweightM2M-V1_0-20170208-A.pdf
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The source code for this sample application can be found at:
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:file:`samples/net/lwm2m_client`.
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Requirements
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************
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- :ref:`networking_with_qemu`
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- Linux machine
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- Leshan Demo Server (https://eclipse.org/leshan/)
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Building and Running
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********************
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There are configuration files for various setups in the
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samples/net/lwm2m_client directory:
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- :file:`prj.conf`
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This is the standard default config.
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Build the lwm2m-client sample application like this:
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.. code-block:: console
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$ cd $ZEPHYR_BASE/samples/net/lwm2m_client
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$ make pristine && make CONF_FILE=<your desired conf file> \
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BOARD=<board to use>
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The easiest way to setup this sample application is to build and run it
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via QEMU using the default configuration :file:`prj.conf`.
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This requires a small amount of setup described in :ref:`networking_with_qemu`.
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Download and run the latest build of the Leshan Demo Server:
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.. code-block:: console
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$ wget https://hudson.eclipse.org/leshan/job/leshan/lastSuccessfulBuild/artifact/leshan-server-demo.jar
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$ java -jar ./leshan-server-demo.jar -wp 8080
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You can now open a web browser to: http://localhost:8080 This is where you
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can watch and manage connected LwM2M devices.
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Build the lwm2m-client sample application for QEMU like this:
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.. code-block:: console
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$ cd $ZEPHYR_BASE/samples/net/lwm2m_client
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$ make pristine && make run
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The sample will start and automatically connect to the Leshan Demo Server with
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both an IPv4 client endpoint (qemu_x86-ipv4-########) and an IPV6 client
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endpoint (qemu_x86-ipv6-########). The "########" portion is a randomly
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generated number so you can have multiple clients running at the same time.
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Sample output
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=============
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The following is sample output from the QEMU console. First, LwM2M engine is
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initialized. Then, several LwM2M Smart Objects register themselves with the
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engine. The sample app then sets some client values so that they can be seen
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in the Leshan Demo Server interface, and finally, registration requests are
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sent to the server where the endpoints are initialized.
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.. code-block:: console
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To exit from QEMU enter: 'CTRL+a, x'
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[QEMU] CPU: qemu32
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qemu-system-i386: warning: Unknown firmware file in legacy mode:
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genroms/multiboot.bin
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[lib/lwm2m_engine] [DBG] lwm2m_engine_init: LWM2M engine thread started
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[lwm2m_obj_security] [DBG] security_create: Create LWM2M security instance: 0
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[lwm2m_obj_server] [DBG] server_create: Create LWM2M server instance: 0
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[lwm2m_obj_device] [DBG] device_create: Create LWM2M device instance: 0
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[lib/lwm2m_rd_client] [DBG] lwm2m_rd_client_init: LWM2M RD client thread started
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[lwm2m_obj_firmware] [DBG] firmware_create: Create LWM2M firmware instance: 0
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shell> [lwm2m-client] [INF] main: Run LWM2M client
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/0, value:0x00018e31, len:6
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/1, value:0x00018e3e, len:23
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/2, value:0x00018e5c, len:9
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/3, value:0x00018e6c, len:3
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/9, value:0x00429394, len:1
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/10, value:0x004293a4, len:4
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/17, value:0x00018e8f, len:16
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/18, value:0x00018ea7, len:5
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/20, value:0x00429394, len:1
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3/0/21, value:0x004293a4, len:4
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[lib/lwm2m_engine] [DBG] lwm2m_engine_create_obj_inst: path:3303/0
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[ipso_temp_sensor] [DBG] temp_sensor_create: Create IPSO Temperature Sensor instance: 0
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[lib/lwm2m_engine] [DBG] lwm2m_engine_set: path:3303/0/5700, value:0x004293a8, len:8
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[lib/lwm2m_rd_client] [INF] lwm2m_rd_client_start: LWM2M Client: qemu_x86-ipv6-4139873732
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[lwm2m-client] [INF] main: IPv6 setup complete.
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[lib/lwm2m_rd_client] [INF] lwm2m_rd_client_start: LWM2M Client: qemu_x86-ipv4-4143279384
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[lwm2m-client] [INF] main: IPv4 setup complete.
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[lib/lwm2m_rd_client] [DBG] sm_do_init: RD Client started with endpoint 'qemu_x86-ipv6-4139873732' and client lifetime 0
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[lib/lwm2m_rd_client] [DBG] sm_do_init: RD Client started with endpoint 'qemu_x86-ipv4-4143279384' and client lifetime 0
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[lib/lwm2m_rd_client] [DBG] sm_send_registration: registration sent [2001:db8::2]
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[lib/lwm2m_rd_client] [DBG] sm_send_registration: registration sent [192.0.2.2]
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[lib/lwm2m_engine] [DBG] lwm2m_udp_receive: checking for reply from [2001:db8::2]
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[lib/lwm2m_rd_client] [DBG] do_registration_reply_cb: Registration callback (code:2.1)
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[lib/lwm2m_rd_client] [INF] do_registration_reply_cb: Registration Done (EP='KUNmxEfMl1')
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[lib/lwm2m_engine] [DBG] lwm2m_udp_receive: reply 0x004097c0 handled and removed
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[lib/lwm2m_engine] [DBG] lwm2m_udp_receive: checking for reply from [192.0.2.2]
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[lib/lwm2m_rd_client] [DBG] do_registration_reply_cb: Registration callback (code:2.1)
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[lib/lwm2m_rd_client] [INF] do_registration_reply_cb: Registration Done (EP='LAN9BHobOp')
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[lib/lwm2m_engine] [DBG] lwm2m_udp_receive: reply 0x004097d8 handled and removed
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