"test_15" example:
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* Description: two periodic threads send data to two sporadic threads

* One deployement are provided, ping-local deploys one node, the two 
threads are on the same node.

* Compilation: issue "make" in the root directory

* Run: tsim-erc32 node_a

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tests :
* fusion of connected periodic and hybrid (-> hybrid)
* threads of non-harmonic periods
* modes + multi-ports
* threads of differents priorities