Hi! On Tue, 20 Jan 2009, Miklos Maroti wrote:
>> I reverted back to channel 11. > > Thanks > >> Question: from what I see in datasheet the RF230 has support for automatic >> acks. Is this not used by the current RF230 stack? > > Yes, it does have automatic ack, but look at the errata and you will > see that it does not work in certain cases, and besides it will have > the same problem as the cc2420 stack that is you will ack packets that > you cannot deliver to the appliaction. But right now we are seeing the opposite, right? The MCU asks the radio to send an ack but the radio doesn't. > So it is better to use software ack, and in fact you can do that (read > the message verify the crc since there is no auto crc check, check the > unique identifier then generate the ack) in less than 200 microseconds > between the RX finish interrupt and the next SFD field! It is very quick > and provably reliable. If the radio conditions are bad on channel 26 then CC2420 should equally be effected. -- Razvan ME _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
