In order to detect a packet, the radio must be in Rx mode. The same goes for clear channel assessment indication of whether or not a transmission is taking place on the channel. According to the CC2420 datasheet, the radio must be in Rx mode for a minimum of 8 symbol periods (~128 us) before the CCA pin is valid.
-David _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joan Cortes Sent: Tuesday, April 24, 2007 12:13 PM To: [email protected] Subject: [Tinyos-help] Tmote Power Conssumption RX mode? Hello, I would like to know if when the Tmote has the Radio and Oscillator on (365uA) is able to listen the preamble of a packet and start reciving it (19.7mA); or the CC2420 needs to be at Reciving stage (19.7mA) in order to listen a packet. Thanks, Joan
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