Re: [Tinyos-help] set frequency and power for the CC2420 in Micaz motes

Andres Aberasturi Thu, 08 Jun 2006 02:45:55 -0700

Hi Michael,

I have seen that in the module CC2420ControlM, inside the configuration CC2420RadioC, there is the implementation of the function SetRFPower, like this:

command result_t CC2420Control.SetRFPower(uint8_t power) {

gCurrentParameters[CP_TXCTRL] = (gCurrentParameters[CP_FSCTRL] & 0xfff0) | (power << CC2420_TXCTRL_PAPWR);

call HPLChipcon.write(CC2420_TXCTRL,gCurrentParameters[CP_TXCTRL]);

return SUCCESS;

}

But I do not find were is it call. I suposed that it would be in the module CC2420RadioM, but it is not there.

And to finish, two more things. The first one, I do not see were is defined the variable TXPOWER_MAX. And secondly, when you write in MakeXbowLocal:

CFLAGS +=-DCC2420_TXPOWER=TXPOWER_MAX

CFLAGS +=-DCC2420_DEF_CHANNEL=26

are you just printing in the console the sentenses DCC2420_TXPOWER=TXPOWER_MAX and DCC2420_DEF_CHANNEL=26, or you are really setting the power and the frequency? I want to know where are DCC2420_TXPOWER and DCC2420_DEF_CHANNEL declarated.

Than you very much in advance,

Andres

>From: Michael Schippling <[EMAIL PROTECTED]>

>To: Andres Aberasturi <[EMAIL PROTECTED]>

>CC: [email protected]

>Subject: Re: [Tinyos-help] set frequency and power for the CC2420 in Micaz motes

>Date: Wed, 07 Jun 2006 17:01:38 -0600

>IF you poke down a bit further in MakeXbowLocal you should see

>things like:

> CFLAGS +=-DCC2420_TXPOWER=TXPOWER_MAX

> CFLAGS +=-DCC2420_DEF_CHANNEL=26

>for the micaz....is that what you are looking for?

>MS

>Andres Aberasturi wrote:

>>Hi all,

>>At this moment I am working with the chipcon CC2420 in the MicaZ

>>motes. I would like to know if I can change the frequency and the

>>power, and how can I do it?

>>I have seen that for the mica2 motes, this is made in the

>>MakeXbowLocal:

>>CFLAGS = -DCC1K_DEFAULT_FREQ=RADIO_916BAND_CHANNEL_00

>>CFLAGS += -DRADIO_XMIT_POWER=0xFF

>>But what happens if I use the MicaZ? Which range of values can I

>>use for micaz?

>>Thanks in advance,

>>Andrés

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