[Tinyos-help] about CTP

[Omprakash Gnawali]

2008/7/10 jiwen zhang <zhangjiwen029 at gmail.com>:
> Hello om_p :
>     yes , you are right , when  the user send the data , he does not put the
> data at the beginning of the payload of the message_t , but an offset whose
> length is the size of the ctp_header . i understand .
>    another question :
>    maybe i have asked the question to someone , but i can't find it . you
> use  " nx_uint8_t   data[0] " in ctp_data_header , what is the function of
> this field ? because it's size is zero . is it similar to a pointer ?

This allows you to access the variable size byte array as an array. If
the data always had n bytes, we would have used data[n].

- om_p