Hi Jan,
The solution was simpler than I thought. I just used call
MLME_SET.macRxOnWhenIdle(FALSE); in MCPS_DATA.indication() and call
MLME_SET.macRxOnWhenIdle(TRUE); ín UartStream.sendDone. So basically disable
RX on idle once we get a packet and enable it back once we are done with
sending over UART.
Aziz Khakulov, MSc
Research Engineer
Automatic Control Lab
School of Electrical Engineering
Royal Institute of Technology (KTH)
www.kth.se
Mob.: +46 76 2653896
________________________________
From: Jan Hauer <[email protected]>
To: Aziz Khakulov <[email protected]>
Cc: "[email protected]" <[email protected]>
Sent: Thursday, June 9, 2011 12:13 PM
Subject: Re: [Tinyos-help] UART0 + TKN15.4 (Tmote Sky)
Hi Aziz,
The MAC should release the USART (SPI) resource after Rx or Tx
operations, that's part of the implementation, but I've not tested it
so far. A lot of the CC2420 low level code is identical to the code in
tos/chips/cc2420, so it would be interesting to see if you see the
same issue with the "standard" MAC as well (e.g. install
apps/Oscilloscope, maybe also try LPL version).
When you say that you never get the granted() event, are you using the
Resource interface provided by Msp430Usart0C()? (because this seems to
be what the CC2420 via HplCC2420SpiC() connects to)
I will also test this myself in a few days (when I return from traveling).
Jan
On Thu, Jun 9, 2011 at 11:31 AM, Aziz Khakulov <[email protected]> wrote:
> Hi all,
> I'm trying to use both UART0 (Pins 2 and 4 on the expansion port) and
> TKN15.4 MAC but facing problems. It seems that something in the MAC is
> getting the resource and not releasing it as when I try
> UartResouce.request(), it never triggers the UartResource.granted() event.
> It happens even if I just initialize MAC without receiving any packets
> (MLME_RESET.request(TRUE) task).
> Has anyone ever faced such problems and knows any possible solution?
>
> Yours,
> Aziz Khakulov
>
>
> _______________________________________________
> Tinyos-help mailing list
> [email protected]
> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>
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