topic Re: AF_DataRequest and memory management in 8-bit Microcontrollers

AF_DataRequest and memory management

CecchiSandrone — Thu, 06 Dec 2007 19:47:37 GMT

Hi,

I want to know what's the memory management of buffers while calling AF_DataRequest because I'm encountering some "out of memory" errors from it. Who is responsible to free the buffer?

Re: AF_DataRequest and memory management

Mads — Fri, 07 Dec 2007 01:51:33 GMT

Cecchi,

you question is very general and would not be easy to answer.

I would recommend that you re-visit our documentation and read how the AF_DataRequest should be used.

But, to try and solve you issue:

When you do a AF_DataRequest, wait for the confirm before you initiate the next transmisison.

This will insure that you do not stavate the system.

BR,

Mads

Re: AF_DataRequest and memory management

CecchiSandrone — Fri, 07 Dec 2007 04:32:18 GMT

Mads wrote:

But, to try and solve you issue:
When you do a AF_DataRequest, wait for the confirm before you initiate the next transmisison.
This will insure that you do not stavate the system.

BR,
Mads

Yes Mads, I understand this. I can't catch only who is responsible to free the buffer that contains the message to send. Furthermore, is there a "unreliable" way to send data without waiting for confirm?

Re: AF_DataRequest and memory management

Mads — Fri, 07 Dec 2007 10:41:50 GMT

when you "pass on" a buffer, the layer you pass it to is responsible for the free'ing.

You only have to free when you receive - just like the demo application shows.

BR,

Mads

Re: AF_DataRequest and memory management

CecchiSandrone — Fri, 07 Dec 2007 16:50:00 GMT

Ok...now is clear! Thanks again for info Mads.