The base station does not automatically retransmit failed packets. There could be a lot of issues here: interference, collisions, range, mismatched duty cycling parameters, etc. Did you modify your base station application to configure the outbound packet for delivery to a duty cycling receiver?
-David -----Original Message----- From: André Miguel de Almeida Marrão Rodrigues [mailto:[EMAIL PROTECTED] Sent: Thursday, December 13, 2007 11:20 AM To: David Moss; 'André Cunha'; 'TinyOS ML' Subject: Re: [Tinyos-help] Hardware Address Recognition Hi I would like to know why in a simple configuration like BS <---> Node I have packet loss when the acks are enabled and the code in the node retransmits the packed if it get lost. We are using 2% low power listening mode in T2 / TMote. Any ideias would be very apreciated. Regards, André Rodrigues PS: If a packet get lost in the BS -> node direction, the 2.02 basestation code does the retransmission? ----- Original Message ----- From: "David Moss" <[EMAIL PROTECTED]> To: "'André Cunha'" <[EMAIL PROTECTED]>; "'TinyOS ML'" <tinyos-help@millennium.berkeley.edu> Sent: Thursday, December 13, 2007 5:16 PM Subject: RE: [Tinyos-help] Hardware Address Recognition > Address recognition is in both hardware and software. You can disable > address recognition in hardware to sniff packets, but with software > acknowledgements enabled you don't want to send an ack back unless you've > received a packet to your local address or to the broadcast address. > That's > why there's a redundant check. > > Hardware address recognition is enabled by default, and the redundant > software address check performed for acknowledgements doesn't change that. > > Note at the top of CC2420ControlP the compile time options you have > available (you should be able to configure these at runtime as well) > > #if defined(CC2420_NO_ACKNOWLEDGEMENTS) > autoAckEnabled = FALSE; > #else > autoAckEnabled = TRUE; > #endif > > #if defined(CC2420_HW_ACKNOWLEDGEMENTS) > hwAutoAckDefault = TRUE; > #else > hwAutoAckDefault = FALSE; > #endif > > // This changes the hardware address recognition. > #if defined(CC2420_NO_ADDRESS_RECOGNITION) > addressRecognition = FALSE; > #else > addressRecognition = TRUE; > #endif > > -David > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of André > Cunha > Sent: Thursday, December 13, 2007 9:21 AM > To: TinyOS ML > Subject: [Tinyos-help] Hardware Address Recognition > > Hello all, > I was looking at the hardware recognition in the CC2420 in the file > CC2420ControlP and, if fact, the CC2420 register (MDMCTRL0->ADDR_DECODE) > is enabled. Looking at the CC2420ReceiveP in the RXFIFO.readDone I > realized that the address verification is by software. Can anyone > clarify this? I have changed the code of RXFIFO.readDone to only signal > data reception but I would like to activate the hardware address > recognition. > > Best Regards, > > André > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
