I you enable ACKs with the appropriate radio control module:
CC1000RadioIntM // for mica2
CC2420RadioM // for micaz
I don't know // for telosb
// enable ACKs on radio messages
call MacControl.enableAck();
The TOS_Msg.ack field of each message will be set appropriately
when sendDone() is called. My code bolus has an example:
http://www.etantdonnes.com/Motes/robocode.tar.gz
MS
Arik wrote:
> Hi,
>
>
>
> I think that you have to implicitly specify that you want the ack to be
> sent.
>
> But I have never done this.
>
>
>
> Of coarse you can implement it with timers by yourself…
>
>
>
> Arik
>
>
>
> ------------------------------------------------------------------------
>
> *From:* David Conde [mailto:[email protected]]
> *Sent:* Wednesday, October 28, 2009 13:17
> *To:* 'Arik Sapojnik'
> *Cc:* [email protected]
> *Subject:* RE: [Tinyos-help] About Active Messages Type (AM type in TOS_Msg)
>
>
>
> Hi Arik,
>
>
>
> Thanks for your answer
>
>
>
> I am using TinyOS 1.x with IntToRfm.Send à Comm.SendMsg [AM_Type], so I
> guess it is implicitly set the AM type in the message which is going to
> be sent when I do this. I have another question about AM communication.
> Do the sender receive an ACK AM message or something similar in order to
> check that the message was sent correctly?I will explain better, I have
> an alarm system, where the sender sends alarm messages, and it is
> necessary that the sender receive and ACK or something similar so that
> the sender can be sure that the receiver got the alarm warn. So, how
> does Active Messages mechanism work with ACKs?
>
>
>
>
>
> Thanks in advance
>
>
>
>
>
> *De:* Arik Sapojnik [mailto:[email protected]]
> *Enviado el:* martes, 27 de octubre de 2009 21:38
> *Para:* David Conde
> *CC:* [email protected]
> *Asunto:* Re: [Tinyos-help] About Active Messages Type (AM type in TOS_Msg)
>
>
>
> David,
>
> The AM type is specified when you create the sender -
>
> components new AMSenderC(AM_TYPE);
>
>
>
>
>
>
>
> This type is sent in the air.
>
>
>
>
>
>
>
>
>
>
>
> Arik
>
> .
>
> ----- Original Message -----
> From: David Conde <[email protected]>
> Date: Tuesday, October 27, 2009 15:31
> Subject: [Tinyos-help] About Active Messages Type (AM type in TOS_Msg)
> To: [email protected]
>
>> Hi,
>>
>>
>>
>> I am wondering how the destiny node is able to handler each message
>> depending on AM type. I have read about Lesson 4 in TinyOS 1.x
>> tutorial and
>> I would like to know where the AM type is included in the
>> TOS_Msg message
>> struct. I mean, if I type MyApp.Send à Comm.SendMsg[1] in the
>> sender side
>> and I do not fix AM type in another place (at least I did not
>> see to fix
>> this AM type in IntToRFM component), how the receiver side knows
>> which AM
>> type has the message?Is this AM Type included in the message
>> automaticallywhen I do Comm.SendMsg[1]?
>>
>>
>>
>> My question is how the receiver is able to send to one concrete
>> messagehandler from the message type if I have not directly
>> specified the AM type
>> in my TOS_Msg message when I send the message.
>>
>>
>>
>> Thanks in advance
>>
>>
>>
>> Regards
>>
>>
>>
>> David
>>
>>
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Tinyos-help mailing list
> [email protected]
> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
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