If you want to be sure that your LED is (not) blinking, hook up an
oscilloscope to the pins and you should be able to check if there
actually is tension over the LED or not. It is very well probable
that you can't see the LED if it is on for only 450us.
Thomas
On Feb 21, 2005, at 6:35 AM, Affan, Syed wrote:
I had thought of that,but if it was blinking fast (with 50% duty
cycle).. I should have been able to see it (persistance of vision :)) !
I did try your valuable suggestion and it seems that as long as cnt==x
where x <=4 the green light is toggled, other wise for cnt > 4 it isnt.
It seems as if it is just rtansmitting the address, or if it is
tranmmiting anything more.. It doesnt seem to cause the event to be
triggered after the address fld has been transmitted. (I set the
address
to TOS_BCAST_ADDR before sending).
Thanks for your help.
Best Regards,
Affan, Syed.
-----Original Message-----
From: Joe Polastre [mailto:[EMAIL PROTECTED]
Sent: Sunday, February 20, 2005 8:55 PM
To: Affan, Syed
Cc: [email protected]
Subject: Re: [Tinyos-users] Using RadioCoordinator interface
A byte time is ~450us, so the LED is probably blinking so fast, you
can't actually see it.
And it is triggered for every byte of data received.
Have you tried:
if (cnt == 8) {
call Leds.greenToggle();
}
that's the quick way to figure it out.
-Joe
On Sun, 20 Feb 2005 20:49:22 -0800, Affan, Syed <[EMAIL PROTECTED]> wrote:
Hello,
I am trying to use the RadioCoordinator interface implemented by
CC1000RadioIntM, to get information when the first few bytes of my msg
structure have been sent and then proceed with some actuation. Here
is my code.
async event void RadioSendCoord.byte(TOS_MsgPtr msg, uint8_t cnt)
{
//struct BeaconForSync * beaconSync = (struct BeaconForSync
*)msg->data;
//call Leds.greenToggle();
if (cnt >= (offsetof(struct TOS_Msg,data) + 3)
&& (msg->type == SYNC_BEACON)){
call Leds.greenToggle();
}
}
Now first of all, no matter what I do the above event is triggered
exactly once per packet transmission (I check this by toogling the red
led when BareSendMsg.send() returns SUCCESS, and uncommenting the line
in the code above). MY understanding was this should be triggered for
every byte that is transmitted. Secondly, the if condition is never
satisfied and I think the reason might very well be b/c the event is
not triggered for that large a cnt value. What do I need to make the
event trigger for every byte? And be able to do what I want?
Thanks.
Best Regards,
Affan, Syed.
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