On Jan 12, 2007, at 10:11 PM, Shuo Xiao wrote:
Hello everyone,
I'd like to run ack mode in tinyos 2.0 on two micaz motes and
changed application BlinkToRadio to be implemented on micaz by
using unicast address. I added "requestAck" command when timer
fired. Where can I add "wasAcked" command? Should it be added in
"AMSend.sendDone" event? I'd like to use Leds toggling to indicate
that the sender sends a packet with requestAck, the receiver sends
back ack on its received packet, and then the original sender
surely receives the ack packet. Is the "wasAcked" command used to
do like this?
Command "wasAcked" in interface "PacketAcknowledgements" actually
gets the value of "ack", which is defined in CC2420 metadata header
structure of tinyos 2.0. In radio link, how to change the value of
"ack", and what's the mechanisms used in tinyos 2.0 to manipulate
this?
Thanks a lot
To request an ack from a receiver, call requestAck() before you call
send().
To see if it was acked, call wasAcked() in or after the sendDone()
event but before you call send() or requestAck().
Phil
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