rf12_easySend() question « Jee Labs Talk

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rf12_easySend() question

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benny
Hi,

I'm using the easy() calls to send data to a central Jnode.
I've initialized my setup with a 30 second interval but a some point I want to force the transmission because of a critical event happend (PIR detection).
However using rf12easySend(0,0) doesn't seem to work, any idea of what can be wrong ?
The rf12easySend() routine in the rf12 library doesn't seem to test for (0,0) arguments or is it me doing something wrong ?

my code :

payload.motion = PIR.digiRead(); //detect status
```
    if (payload.motion != pirState) {

      pirState = payload.motion;                //copy status

      rf12easySend(&payload, sizeof payload);  // update data in buffer

      rf12easySend(0,0);                       //send data now !!!

    }
-ben
```
Posted 16/12/2009 20:09:37
jcw

Did you use rf12easyInit(30)? In that case you can't force a faster packet rate than once every 30s. The init value is really to enforce a lower bound between packets at all times. For more advanced uses, I tend to use lower values in init (or even 0), and use my own timers to only call rf12easySend() once in while.

The only other reason I can think of is: make sure you have the latest code, it evolves quickly at times. I've re-uploaded, to make sure the latest is in the ZIP file (as well as in subversion).

Posted 16/12/2009 22:56:08
benny

Hi JC,

Yes I did call rf12easyInit(30) first. My understanding was when using easySend(0,0), a transmission was forced, is this true or not ?
Last night (before you uploaded the libs) I did download the latest, so I'm pretty sure I've the latest version of the library.

-ben

Posted 17/12/2009 06:52:14
jcw

No - rf12easySend(0,0) forces a transmission even if the data is the same as before, but not more often than the 30 seconds you specified with rf12easyInit().

Posted 17/12/2009 11:04:53