Merge pull request #134 from NicolaAccettura/develop_FW-322

Develop fw 322
Merge pull request #134 from NicolaAccettura/develop_FW-322

Develop fw 322
Merge branch 'develop' of https://github.com/openwsn-berkeley/openwsn-fw into develop
Merge branch 'develop' of https://github.com/NicolaAccettura/openwsn-fw into demo_ericsson