Dear List,
In my application I have several types of messages, and to handle that, I have
one general struct:
/typedef nx_struct GenericMsg {
nx_uint8_t msgID;
nx_uint8_t msgLen;
nx_uint8_t msgPayload[0];
}GenericMsg;/
Other messages are casted to the msgPayload variable, and sent over radio with
given length. Between motes, this works, when I send for example a
CounterMsg casted into msgPayload, motes can read all the values, leds are
shining. Now I want to receive this kind of message structure in Java,
using MIG.
Problem: with msgPayload[0], I receve only msgID and msgLen. After checking the
mig generated GenericMsg.java, I'm aware of the reason, the size of
message is hardcoded and every array indexes are set according to
DEFAULT_MESSAGE_SIZE.
So I tried to set GenericMsg with msgPayload[TOSH_DATA_SIZE-2], and now I have
the error:
/receive error for GenericMsg (AM type 1): invalid length message received (too
short)/
Again, checked the reason, net.tinyos.message.Receiver.java throws this, if
dataGet().length > msg.get_header_length();
Now I'm pretty much lost, and hoping that one of you already dealt with this
kind of problem, and can say me a few magic words about the solution.
Thanks for your assistance!
Viktor
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