[Tinyos-help] read/write delay of FIFO buffer in telosb with tinyos 2.0

Hi, I'd like to know the exact read/write delay of FIFO buffer in telosb with tinyos 2.0. When I estimated the delay, the read delay was longer than the write delay for the frame with the same length. Can anyone make sense? Thanks in advance. Inyong Park __

[Tinyos-help] some parameters of CC2420 in TinyOS 2.0

Hi, I'm wondering where following values in CC2420.h come from? Especially, Could you explain about ACK_TURNAROUND and ACK_WAIT_DELAY ? enum cc2420_enums { CC2420_TIME_ACK_TURNAROUND = 7, CC2420_TIME_VREN = 20, CC2420_TIME_SYMBOL = 2, CC2420_BACKOFF_PERIOD = (20 / CC2420_TIME_SYMBOL), CC2420_ACK_

[Tinyos-help] [Q] Interfame space(IFS) in CC2420 (telosb)

Hi, According to IEEE802.15.4 spec, MAC sublayer needs a finite amount of time (IFS) to process data received by PHY. And aMinLIFSPeriod is defind 40 symbols period. I can't find the IFS in spec. and MAC code of CC2420. Is TX_TURNAROUND(12 symbols period) enough for the IFS? I'm wondering if the I

[Tinyos-help] TOSSIM in TinyOS2.x

Dear Mr. Philip Levis, I'm doing simulation with TOSSIM in TinyOS 2.x. I have a question about variable "receiving" in UseGainInterferenceModelC.nc. The command putOnAirTo calls sim_gain_put() as many as the number of links which source node has. Eventually, enqueue_receive_event() sets the variab

[Tinyos-help] What results from packet collision in telosb ?

Hi, When two telosb motes try to send a packet to one receiver(telosb mote) simultaneously, collision can happens between two packets. In that case, I wonder that one of them can be transmitted to the receiver without any fault. I saw this case in my experiments. Who can make sense of that? Thank

Re: [Tinyos-help] [tinyos2.0] event timer.fired() getting lost on telosb using BlinkToRadio apps.

Hi, I've executed BlinkToRadio application with two telosb motes for about 3 hours after adding one line of code in VirtualizeTimerC.nc. These two motes are still operating correctly without event timer.fired() getting lost. It seems that the bug's been fixed. Thank you. Inyong Park > Whoah, it

[Tinyos-help] [tinyos2.0] event timer.fired() getting lost on telosb using BlinkToRadio apps.

Hi, I've implemented BlinkToRadio application on telosb with tinyos 2.0. Two telosb motes send packets to each other using BlinkToRadio application. Packets are sent in event Timer.fired() in BlinkToRadio application. I found something wrong in telosb operation. If TIMER_PERIOD_MILLI(packet genera