[Tinyos-help] Why be wired to CrcFilter?

[Fajun Sun]

Hi everybody:
   Recently I am testing TOSBase.In TOSBase.nc,the interface RadioReceive of TOSBaseM is wired to RadioCRCPacket.RadioReceive by code "TOSBaseM.RadioReceive-> Comm;".But when I skim over the code generated by ncc1.exe in app.c,I find the TOSBaseM$RadioReceive$receive is invoked by CrcFilter$UpperReceive$receive. I can't understand where this invoking come from. Because the configuration RadioCRCPacket and every configuration or module below seem not having wired to CRCFilter. Anyone who know the cause or what might be,please let me know.
 
   Thanks in advance and best regards.
 
          Fajun Sun
 
 
 







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