dear editor:
 
      hello,I get some trouble of the network type in Tinyos2.0.My problem is 
that I want to change the data in the message from nx_uint16_t  to char*.For 
example in tinyos-2.x\apps\Oscilloscope:
 
typedef nx_struct oscilloscope {
  nx_uint16_t version; /* Version of the interval. */
  nx_uint16_t interval; /* Sampling period. */
  nx_uint16_t id; /* Mote id of sending mote. */
  nx_uint16_t count; /* The readings are samples count * NREADINGS onwards */
  char* readings[NREADINGS];
} oscilloscope_t;
 
But the compiler tells me that " field `'readings' must be a network type"
I want to know where should I to change or what else should I do?
Get trouble to you,thanks a lot!
 
 
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