Hi Eric,
I wanted to say what you said, just forgot to add:
"however one could embed the value in a packet being transmitted so the
receiver could see it."
Correct me i I am wrong: the following metadata header is never transmitted
over the radio. It is only passed between different modules within a mote.
typedef nx_struct cc2420_metadata_t {
nx_uint8_t rssi;
nx_uint8_t lqi;
nx_uint8_t tx_power;
________________________________________
From: Eric Decker [[email protected]]
Sent: Monday, 26 August, 2013 7:48:00 AM
To: He Dajiang (I2R)
Subject: Re: [Tinyos-help] Tinyos-help Digest, Vol 124, Issue 21
On Sun, Aug 25, 2013 at 4:36 AM, He Dajiang (I2R)
<[email protected]<mailto:[email protected]>> wrote:
It looks to me the receiver side has no way to know the tx power of the sender.
not sure what you are basng your assertion on.
the value of transmit power on the sender side (a number) isn't terribly useful
on the receiver side.
however one could embed the value in a packet being transmitted so the receiver
could see it.
the receiver does have available to it ( for the cc2420 and cc2520 chips) the
value of rssi. received strength status indicator.
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1. Problem in setting transmit power for cc2420 (Sarra Sarah)
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Message: 1
Date: Sat, 24 Aug 2013 18:54:32 +0100
From: Sarra Sarah <[email protected]<mailto:[email protected]>>
Subject: [Tinyos-help] Problem in setting transmit power for cc2420
To: tinyos-help
<[email protected]<mailto:[email protected]>>
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I want to set transmit power for cc2420, so i did that:
I added this line on make file: CFLAGS +="-DCC2420_DEF_RFPWER=1"
and then i wanted to read transmit power in receiving the packet i used
call CC2420Packet.getPower(msg), but transmit power is 0x00. i dont know
where is the problem.
Thank you for help !!
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