Dear TinyOS users,

I am using TinyOS since 5 years, nonetheless I am still facing problems and
difficulties to understand its implemented code. Today I am puzzled with
this snapshot of code:

  async command cc2420_metadata_t *CC2420PacketBody.getMetadata( message_t*
msg ) {
    return (cc2420_metadata_t*)msg->metadata;
  }

My question is How msg has become filled with data?????


All the bests,
Nahr Elk
Independent Researcher
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