liblwm2m is an implementation of the LWM2M protocol from the Open Mobile Alliance. Source Layout ------------- -+- core (the LWM2M engine) | | | +- er-coap-13 (Erbium's CoAP engine from http://people.inf.ethz.ch/mkovatsc/erbium.php, | modified to run on linux) | +- tests (example and test application) | +- client (a command-line LWM2M client with two test objects) | +- server (a command-line LWM2M server) | +- TLV (application decoding two hard-coded TLV buffers) | +- utils (utility functions for command-line interface) Compiling --------- Despite its name, liblwm2m is not a library but files to be built with an application. liblwm2m uses CMake. Look at tests/server/CMakeLists.txt for an example of how to include it. Two compilation switches are used: LWM2M_CLIENT_MODE and LWM2M_SERVER_MODE. Define LWM2M_CLIENT_MODE to enable LWM2M Client interfaces. Define LWM2M_SERVER_MODE to enable LWM2M Server interfaces. Both can be defined at the same time. Testing ------- To compile the test server - - - - - - - - - - - - - In the any directory, run the following commands: cmake [liblwm2m directory]/tests/server make ./lwm2mserver The lwm2mserver listens on UDP port 5684. It features a basic command line interface. Type 'help' for a list of supported commands. To compile the test client - - - - - - - - - - - - - In the any directory, run the following commands: cmake [liblwm2m directory]/tests/client make ./lwm2mclient The lwm2mclient features two LWM2M objects: - Device Object (id: 3) containing hard-coded values from the Example LWM2M Client of Appendix E of the LWM2M Technical Specification. - a test object (id: 1024) with the following description: Multiple Object | ID | Instances | Mandatoty | Test | 1024 | Yes | No | Ressources: Supported Multiple Name | ID | Operations | Instances | Mandatory | Type | Range | Units | Description | test | 1 | R/W | No | Yes | Integer | 0-255 | | | exec | 2 | E | No | Yes | | | | | The lwm2mclient opens udp port 5683. You can connect to it by installing the firefox plugin Copper (http://people.inf.ethz.ch/mkovatsc/copper.php) and opening a new Firefox tab to: coap://[::1]:5683 At launch, lwm2mclient tries to register to a LWM2M Server at [::1]:5684. It features a basic command line interface. Type 'help' for a list of supported commands.