2.1 KiB
LWM2M Standalone Example
This is an example of how to make use of the OMA LWM2M and CoAP implementation from Contiki-NG in a native application.
The Makefile will copy necessary files from Contiki-NG to the subfolder
lwm2m-src and then compile the example lwm2m-example
as a native application. By copying only the needed source files,
the example can be used outside the Contiki-NG source tree.
Running the LWM2M example
cd contiki/examples/lwm2m/standalone
make
./lwm2m-example
The example application will start a CoAP server listening on localhost port
5683 with some example LWM2M objects. By default, the example application will
also register itself with the Leshan server at leshan.eclipse.org. To specify
a different LWM2M server:
./lwm2m-example coap://<server host address> <endpoint name>.
For example to connect to a locally running LWM2M server:
./lwm2m-example coap://127.0.0.1/ example-endpoint-name
Running the LWM2M example with DTLS
The example currently only supports PSK and the default credentials can be
changed in the file lwm2m-example.c.
#define PSK_DEFAULT_IDENTITY "Client_identity"
#define PSK_DEFAULT_KEY "secretPSK"
To compile with DTLS support and connect to a local LWM2M server with matching credentials configured:
cd contiki/examples/lwm2m/standalone
make clean
make MAKE_WITH_DTLS=1
./lwm2m-example coaps://127.0.0.1
Moving the example outside Contiki-NG
cd contiki/examples/lwm2m/standalone
make copy
Copy the example directory contents to a directory outside Contiki-NG.
Remove the Makefile Makefile.contiki and the remaining Makefile
will compile the example independent of the Contiki-NG source tree.
Running the LWM2M examle with HEX transport
The Hex Transport can be tested together with DTLS using:
make clean
make TRANSPORT=hex MAKE_WITH_DTLS=1
javac Hex2UDP.java
java Hex2UDP leshan.eclipse.org 5684 ./lwm2m-example
Note that you need to configure the Leshan server with the correct key and ID.
(without DTLS it should be 5683 for CoAP).