|
Sean, I think if you move the condition
for address after the "msg" declaration, you'll be fine. I don't
think you need to use the preprocessor as Eric pointed out (I
don't know the reason but it works, maybe Eric can explain better
than me). check with the code below:
event void Notify.notify(button_state_t
val)
{
if(_radioBusy == FALSE)
{
//Creating the packet
MoteToMoteMsg_t* msg = call Packet.getPayload(&
_packet , sizeof(MoteToMoteMsg_t));
msg->NodeId = TOS_NODE_ID;
msg->Data = "" !val;
//Moved after msg declaration <-------------
if(_address == 2)
_address = 3;
else
_address = 2;
//Sending the packet
if(call AMSend.send(_address,& _packet ,
sizeof(MoteToMoteMsg_t)) == SUCCESS)
{
_radioBusy = TRUE;
}
}
}
On 24-3-2013 2:36 AM, Eric Decker wrote:
First fix your formatting. The way you've presented your code is
mostly unreadable.
So the first thing I did was to reformat the code and I got
what is presented in Sean1.nc.txt.
It is very clear what is wrong. You are declaring a new
variable in the middle of a code block. C doesn't like that.
That is also why when you remove the if (_radioBusy == FALSE)
clause why things then work.
I've moved things around a little bit and made this as
Sean2.nc.txt
This is basic C.
On Sat, Mar 23, 2013 at 3:00 PM, Sean Dekker <[email protected]> wrote:
Hi all,
I want to create a packet and each time that the
packet is being created I want to send it to a
specific sensor board knowing the TOS_NODE_ID of the
nodes.
I have 3 telosb boards. I assign node ids of 1,2
and 3 to them when uploading the program. But for
giving the address (switching between 2 addresses in
"AMSend.send()" method, the compiler gives some
errors. Here is part of my code:
bool _radioBusy =
FALSE;
message_t _packet;
uint16_t _address =
2;
event void
Boot.booted()
{
call Notify.enable();
call
AMControl.start();
}
event void
Notify.notify(button_state_t val)
{
if(_radioBusy ==
FALSE)
{
if(_address == 2)
{
_address = 3;
}
else
{
_address = 2;
}
//Creating the packet
MoteToMoteMsg_t* msg
= call Packet.getPayload(& _packet ,
sizeof(MoteToMoteMsg_t));
msg->NodeId =
TOS_NODE_ID;
msg->Data =
"" val;
//Sending the packet
if(call
AMSend.send(_address,& _packet ,
sizeof(MoteToMoteMsg_t)) == SUCCESS)
{
_radioBusy = TRUE;
}
}
}
And here is the error :
In
file included from MoteToMoteAppC.nc:9:
In
component `MoteToMoteC':
MoteToMoteC.nc:
In function `Notify.notify':
MoteToMoteC.nc:56:
syntax error before `*'
MoteToMoteC.nc:58:
`msg' undeclared (first use in this function)
MoteToMoteC.nc:58:
(Each undeclared identifier is reported only
once
MoteToMoteC.nc:58:
for each function it appears in.)
I found if I remove the if/else
statement for checking for "_address" inside the
Notify event, the progam compiles...but then I
will only be able to send to node with ID of 2.
Thanks,
Sean.
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--
Eric B. Decker
Senior (over 50 :-) Researcher
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